TY  - JOUR
AU  - Kosić, Višnja
AU  - Božić, Nataša
AU  - Dojnov, Biljana
AU  - Banković, Predrag
AU  - Jović-Jovičić, Nataša
AU  - Knežević-Jugović, Zorica
AU  - Milutinović Nikolić, Aleksandra
PY  - 2024
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7525
AB  - Three glycoside hydrolases (α-amylase, xylanase and pullulanase) were immobilized on low-cost, environmentally friendly, easily modified clay rich in beidellite. Modifications included common procedures: Na-exchange, acid activation, pillaring, pillaring followed by acid activation, and organo-modifications with chitosan. Supports were characterized by chemical analysis, low temperature N2 physisorption, X-ray powder diffraction (XRPD) and Fourier-transform infrared (FT-IR) spectroscopy. The point of zero charge was also determined. Specific activity of different immobilizates of selected glycoside hydrolases was notably influenced by the type of chemical modification of supports. For each enzyme optimal support was chosen and storage stability was tested. α-Amylase immobilized on acid-activated support retained up to 95% of its initial specific activity of 105.6 ± 5.1 U g−1 after a testing period of 120 days. The most suitable support for xylanase was chitosan-modified beidellite with having specific activity of 90.0 ± 1.4 U g−1 which retained >50% its value after 120 days. Specific activity of pullulanase immobilized on pillared sample that was subsequently activated by acid was 44.5 ± 0.7 U g−1. Initial activity was preserved up to 33% for the same testing period. Comparing these results to the storage stability of the free enzymes that completely lost their activity for the longest period of 40 days, it can be concluded that appropriately modified beidellite- based clays could be used as suitable supports for stabilization of glycoside hydrolases. Nevertheless, further characterization of immobilizates (pH, thermal and operational stability) is needed in order to raise the suitability for larger scale processes in food industry.
PB  - Elsevier
T2  - Applied Clay Science
T1  - Significantly improved stabilization of glycoside hydrolases important in food industry by immobilization onto appropriately modified beidellite
VL  - 250
SP  - 107289
DO  - 10.1016/j.clay.2024.107289
ER  - 

@article{
author = "Kosić, Višnja and Božić, Nataša and Dojnov, Biljana and Banković, Predrag and Jović-Jovičić, Nataša and Knežević-Jugović, Zorica and Milutinović Nikolić, Aleksandra",
year = "2024",
abstract = "Three glycoside hydrolases (α-amylase, xylanase and pullulanase) were immobilized on low-cost, environmentally friendly, easily modified clay rich in beidellite. Modifications included common procedures: Na-exchange, acid activation, pillaring, pillaring followed by acid activation, and organo-modifications with chitosan. Supports were characterized by chemical analysis, low temperature N2 physisorption, X-ray powder diffraction (XRPD) and Fourier-transform infrared (FT-IR) spectroscopy. The point of zero charge was also determined. Specific activity of different immobilizates of selected glycoside hydrolases was notably influenced by the type of chemical modification of supports. For each enzyme optimal support was chosen and storage stability was tested. α-Amylase immobilized on acid-activated support retained up to 95% of its initial specific activity of 105.6 ± 5.1 U g−1 after a testing period of 120 days. The most suitable support for xylanase was chitosan-modified beidellite with having specific activity of 90.0 ± 1.4 U g−1 which retained >50% its value after 120 days. Specific activity of pullulanase immobilized on pillared sample that was subsequently activated by acid was 44.5 ± 0.7 U g−1. Initial activity was preserved up to 33% for the same testing period. Comparing these results to the storage stability of the free enzymes that completely lost their activity for the longest period of 40 days, it can be concluded that appropriately modified beidellite- based clays could be used as suitable supports for stabilization of glycoside hydrolases. Nevertheless, further characterization of immobilizates (pH, thermal and operational stability) is needed in order to raise the suitability for larger scale processes in food industry.",
publisher = "Elsevier",
journal = "Applied Clay Science",
title = "Significantly improved stabilization of glycoside hydrolases important in food industry by immobilization onto appropriately modified beidellite",
volume = "250",
pages = "107289",
doi = "10.1016/j.clay.2024.107289"
}

Kosić, V., Božić, N., Dojnov, B., Banković, P., Jović-Jovičić, N., Knežević-Jugović, Z.,& Milutinović Nikolić, A.. (2024). Significantly improved stabilization of glycoside hydrolases important in food industry by immobilization onto appropriately modified beidellite. in Applied Clay Science
Elsevier., 250, 107289.
https://doi.org/10.1016/j.clay.2024.107289

Kosić V, Božić N, Dojnov B, Banković P, Jović-Jovičić N, Knežević-Jugović Z, Milutinović Nikolić A. Significantly improved stabilization of glycoside hydrolases important in food industry by immobilization onto appropriately modified beidellite. in Applied Clay Science. 2024;250:107289.
doi:10.1016/j.clay.2024.107289 .

Kosić, Višnja, Božić, Nataša, Dojnov, Biljana, Banković, Predrag, Jović-Jovičić, Nataša, Knežević-Jugović, Zorica, Milutinović Nikolić, Aleksandra, "Significantly improved stabilization of glycoside hydrolases important in food industry by immobilization onto appropriately modified beidellite" in Applied Clay Science, 250 (2024):107289,
https://doi.org/10.1016/j.clay.2024.107289 . .

TY  - JOUR
AU  - Fronczak, Maciej
AU  - Karoly, Zoltan
AU  - Banković, Predrag
AU  - Mojović, Zorica
PY  - 2024
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7470
AB  - As electrode materials, graphene and its derivatives have been the subject of extensive investigation. Graphene has been modified by various types of materials in an effort to enhance its electrode qualities even more. This work sought to understand how the precursor to graphene affected the electrochemical characteristics of the final product and its potential use, unaltered, in the creation of sensors for nitrophenol derivatives. A set of samples of graphene produced using a radiofrequency (RF) thermal plasma jet are presented. Precursors for the creation of graphene included six basic organic compounds: alkanes, alcohols, carboxylic acids, and aldehydes. Cyclic voltammetry (CV) was used to carry out the electrochemical characterization. Square wave voltammetry (SWV) was used to assess the graphene’s electroanalytical performance for the simultaneous detection of 3-nitrophenol and 4-nitrophenol. A graphene sample made from methane had the maximum current response. Using as synthesised methane-originated graphene, two nitrophenol derivatives were successfully detected simulta neously in a concentration range of 10 μM to 500 μM. The type of oxygen functional groups and the edge/plane ratio in the produced graphene were shown to have a significant impact on the graphene electroactivity. Future research ought to focus on improving synthetic conditions in order to enhance desirable characteristics.
PB  - Elsevier
T2  - Microchemical Journal
T1  - The influence of precursor selection on electrochemical properties of  radiofrequency thermal plasma synthesized graphene
VL  - 199
SP  - 110079
DO  - 10.1016/j.microc.2024.110079
ER  - 

@article{
author = "Fronczak, Maciej and Karoly, Zoltan and Banković, Predrag and Mojović, Zorica",
year = "2024",
abstract = "As electrode materials, graphene and its derivatives have been the subject of extensive investigation. Graphene has been modified by various types of materials in an effort to enhance its electrode qualities even more. This work sought to understand how the precursor to graphene affected the electrochemical characteristics of the final product and its potential use, unaltered, in the creation of sensors for nitrophenol derivatives. A set of samples of graphene produced using a radiofrequency (RF) thermal plasma jet are presented. Precursors for the creation of graphene included six basic organic compounds: alkanes, alcohols, carboxylic acids, and aldehydes. Cyclic voltammetry (CV) was used to carry out the electrochemical characterization. Square wave voltammetry (SWV) was used to assess the graphene’s electroanalytical performance for the simultaneous detection of 3-nitrophenol and 4-nitrophenol. A graphene sample made from methane had the maximum current response. Using as synthesised methane-originated graphene, two nitrophenol derivatives were successfully detected simulta neously in a concentration range of 10 μM to 500 μM. The type of oxygen functional groups and the edge/plane ratio in the produced graphene were shown to have a significant impact on the graphene electroactivity. Future research ought to focus on improving synthetic conditions in order to enhance desirable characteristics.",
publisher = "Elsevier",
journal = "Microchemical Journal",
title = "The influence of precursor selection on electrochemical properties of  radiofrequency thermal plasma synthesized graphene",
volume = "199",
pages = "110079",
doi = "10.1016/j.microc.2024.110079"
}

Fronczak, M., Karoly, Z., Banković, P.,& Mojović, Z.. (2024). The influence of precursor selection on electrochemical properties of  radiofrequency thermal plasma synthesized graphene. in Microchemical Journal
Elsevier., 199, 110079.
https://doi.org/10.1016/j.microc.2024.110079

Fronczak M, Karoly Z, Banković P, Mojović Z. The influence of precursor selection on electrochemical properties of  radiofrequency thermal plasma synthesized graphene. in Microchemical Journal. 2024;199:110079.
doi:10.1016/j.microc.2024.110079 .

Fronczak, Maciej, Karoly, Zoltan, Banković, Predrag, Mojović, Zorica, "The influence of precursor selection on electrochemical properties of  radiofrequency thermal plasma synthesized graphene" in Microchemical Journal, 199 (2024):110079,
https://doi.org/10.1016/j.microc.2024.110079 . .

TY  - JOUR
AU  - Fronczak, Maciej
AU  - Karoly, Zoltan
AU  - Banković, Predrag
AU  - Mojović, Zorica
PY  - 2024
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7469
AB  - As electrode materials, graphene and its derivatives have been the subject of extensive investigation. Graphene 
has been modified by various types of materials in an effort to enhance its electrode qualities even more. This 
work sought to understand how the precursor to graphene affected the electrochemical characteristics of the final 
product and its potential use, unaltered, in the creation of sensors for nitrophenol derivatives. A set of samples of 
graphene produced using a radiofrequency (RF) thermal plasma jet are presented. Precursors for the creation of 
graphene included six basic organic compounds: alkanes, alcohols, carboxylic acids, and aldehydes. Cyclic 
voltammetry (CV) was used to carry out the electrochemical characterization. Square wave voltammetry (SWV) 
was used to assess the graphene’s electroanalytical performance for the simultaneous detection of 3-nitrophenol 
and 4-nitrophenol. A graphene sample made from methane had the maximum current response. Using as synthesised methane-originated graphene, two nitrophenol derivatives were successfully detected simulta neously in a concentration range of 10 μM to 500 μM. The type of oxygen functional groups and the edge/plane 
ratio in the produced graphene were shown to have a significant impact on the graphene electroactivity. Future 
research ought to focus on improving synthetic conditions in order to enhance desirable characteristics.
PB  - Elsevier
T2  - Microchemical Journal
T1  - The influence of precursor selection on electrochemical properties of  radiofrequency thermal plasma synthesized graphene
VL  - 199
SP  - 110079
DO  - 10.1016/j.microc.2024.110079
ER  - 

@article{
author = "Fronczak, Maciej and Karoly, Zoltan and Banković, Predrag and Mojović, Zorica",
year = "2024",
abstract = "As electrode materials, graphene and its derivatives have been the subject of extensive investigation. Graphene 
has been modified by various types of materials in an effort to enhance its electrode qualities even more. This 
work sought to understand how the precursor to graphene affected the electrochemical characteristics of the final 
product and its potential use, unaltered, in the creation of sensors for nitrophenol derivatives. A set of samples of 
graphene produced using a radiofrequency (RF) thermal plasma jet are presented. Precursors for the creation of 
graphene included six basic organic compounds: alkanes, alcohols, carboxylic acids, and aldehydes. Cyclic 
voltammetry (CV) was used to carry out the electrochemical characterization. Square wave voltammetry (SWV) 
was used to assess the graphene’s electroanalytical performance for the simultaneous detection of 3-nitrophenol 
and 4-nitrophenol. A graphene sample made from methane had the maximum current response. Using as synthesised methane-originated graphene, two nitrophenol derivatives were successfully detected simulta neously in a concentration range of 10 μM to 500 μM. The type of oxygen functional groups and the edge/plane 
ratio in the produced graphene were shown to have a significant impact on the graphene electroactivity. Future 
research ought to focus on improving synthetic conditions in order to enhance desirable characteristics.",
publisher = "Elsevier",
journal = "Microchemical Journal",
title = "The influence of precursor selection on electrochemical properties of  radiofrequency thermal plasma synthesized graphene",
volume = "199",
pages = "110079",
doi = "10.1016/j.microc.2024.110079"
}

Fronczak, M., Karoly, Z., Banković, P.,& Mojović, Z.. (2024). The influence of precursor selection on electrochemical properties of  radiofrequency thermal plasma synthesized graphene. in Microchemical Journal
Elsevier., 199, 110079.
https://doi.org/10.1016/j.microc.2024.110079

Fronczak M, Karoly Z, Banković P, Mojović Z. The influence of precursor selection on electrochemical properties of  radiofrequency thermal plasma synthesized graphene. in Microchemical Journal. 2024;199:110079.
doi:10.1016/j.microc.2024.110079 .

Fronczak, Maciej, Karoly, Zoltan, Banković, Predrag, Mojović, Zorica, "The influence of precursor selection on electrochemical properties of  radiofrequency thermal plasma synthesized graphene" in Microchemical Journal, 199 (2024):110079,
https://doi.org/10.1016/j.microc.2024.110079 . .

TY  - JOUR
AU  - Stevanović, Gordana
AU  - Jović-Jovičić, Nataša
AU  - Popović, Aleksandar
AU  - Dojčinović, Biljana
AU  - Milutinović Nikolić, Aleksandra
AU  - Banković, Predrag
AU  - Ajduković, Marija
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6902
AB  - Catalytic degradation of tartrazine in the presence of Oxone® activated by a catalyst constituted of cobalt supported on a nanocomposite of smectite with chitosan-derived carbon was investigated. The catalyst was synthesized using cobalt impregnation followed by carbonization at 773 K in an inert atmosphere. The synthesized catalyst was previously fully characterized using appropriate characterization methods, including XRPD, XPS, FTIR, HR-TEM, and low-temperature N2-physisorption analysis. The catalytic experiments were performed by varying different experimental parameters (dye concentration, Oxone® concentration, temperature, and initial pH of the reaction solution). The kinetic and thermodynamic parameters were estimated from the experimental results. The kinetics data showed the best fit with the pseudo-first-order kinetics model. The activation energy of the investigated degradation process was calculated according to the Arrhenius equation. The catalyst showed excellent performance at low temperatures even at 298 K, and in the wide range of pH values.
PB  - Serbian Ceramic Society
T2  - Science of Sintering
T1  - Co supported chitosan-derived carbon-smectite catalyst in Oxone® induced at dye degradation
DO  - 10.2298/SOS230427037S
ER  - 

@article{
author = "Stevanović, Gordana and Jović-Jovičić, Nataša and Popović, Aleksandar and Dojčinović, Biljana and Milutinović Nikolić, Aleksandra and Banković, Predrag and Ajduković, Marija",
year = "2023",
abstract = "Catalytic degradation of tartrazine in the presence of Oxone® activated by a catalyst constituted of cobalt supported on a nanocomposite of smectite with chitosan-derived carbon was investigated. The catalyst was synthesized using cobalt impregnation followed by carbonization at 773 K in an inert atmosphere. The synthesized catalyst was previously fully characterized using appropriate characterization methods, including XRPD, XPS, FTIR, HR-TEM, and low-temperature N2-physisorption analysis. The catalytic experiments were performed by varying different experimental parameters (dye concentration, Oxone® concentration, temperature, and initial pH of the reaction solution). The kinetic and thermodynamic parameters were estimated from the experimental results. The kinetics data showed the best fit with the pseudo-first-order kinetics model. The activation energy of the investigated degradation process was calculated according to the Arrhenius equation. The catalyst showed excellent performance at low temperatures even at 298 K, and in the wide range of pH values.",
publisher = "Serbian Ceramic Society",
journal = "Science of Sintering",
title = "Co supported chitosan-derived carbon-smectite catalyst in Oxone® induced at dye degradation",
doi = "10.2298/SOS230427037S"
}

Stevanović, G., Jović-Jovičić, N., Popović, A., Dojčinović, B., Milutinović Nikolić, A., Banković, P.,& Ajduković, M.. (2023). Co supported chitosan-derived carbon-smectite catalyst in Oxone® induced at dye degradation. in Science of Sintering
Serbian Ceramic Society..
https://doi.org/10.2298/SOS230427037S

Stevanović G, Jović-Jovičić N, Popović A, Dojčinović B, Milutinović Nikolić A, Banković P, Ajduković M. Co supported chitosan-derived carbon-smectite catalyst in Oxone® induced at dye degradation. in Science of Sintering. 2023;.
doi:10.2298/SOS230427037S .

Stevanović, Gordana, Jović-Jovičić, Nataša, Popović, Aleksandar, Dojčinović, Biljana, Milutinović Nikolić, Aleksandra, Banković, Predrag, Ajduković, Marija, "Co supported chitosan-derived carbon-smectite catalyst in Oxone® induced at dye degradation" in Science of Sintering (2023),
https://doi.org/10.2298/SOS230427037S . .

TY  - CONF
AU  - Maksimović, Jelena
AU  - Pagnacco, Maja
AU  - Ajduković, Marija
AU  - Stevanović, Gordana
AU  - Banković, Predrag
AU  - Milutinović Nikolić, Aleksandra
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6748
AB  - The Briggs-Rauscher oscillatory reaction, which represents the oxidation of malonic acid in 
the presence of hydrogen peroxide and potassium iodate catalyzed by manganese ion in an 
acidic environment, proved to be extremely sensitive for testing insoluble materials, such as 
bronzes and clays. It was shown that origin of bentonite has high impact on the length of the 
oscillation time. In this work, the influence of different sizes of bentonite particles from the 
Bogovina deposit on the Briggs-Rauscer oscillatory reaction in the conditions of a closed 
reactor was investigated. Five particle sizes of bentonite, (< 25 µm, < 50 µm, < 75 µm, < 150 
µm and < 300 µm) having identical mass of 0.15 g, were tested. The addition of different 
particle sizes of Bogovina clay does not significantly influence the basic BR oscillogram.
PB  - Serbian Ceramic Society
C3  - Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia
T1  - The effect of different particle sizes of bentonite from the Bogovina deposit on the Briggs-Rauscher oscillatory reaction
SP  - 71
EP  - 72
UR  - https://hdl.handle.net/21.15107/rcub_cer_6748
ER  - 

@conference{
author = "Maksimović, Jelena and Pagnacco, Maja and Ajduković, Marija and Stevanović, Gordana and Banković, Predrag and Milutinović Nikolić, Aleksandra",
year = "2023",
abstract = "The Briggs-Rauscher oscillatory reaction, which represents the oxidation of malonic acid in 
the presence of hydrogen peroxide and potassium iodate catalyzed by manganese ion in an 
acidic environment, proved to be extremely sensitive for testing insoluble materials, such as 
bronzes and clays. It was shown that origin of bentonite has high impact on the length of the 
oscillation time. In this work, the influence of different sizes of bentonite particles from the 
Bogovina deposit on the Briggs-Rauscer oscillatory reaction in the conditions of a closed 
reactor was investigated. Five particle sizes of bentonite, (< 25 µm, < 50 µm, < 75 µm, < 150 
µm and < 300 µm) having identical mass of 0.15 g, were tested. The addition of different 
particle sizes of Bogovina clay does not significantly influence the basic BR oscillogram.",
publisher = "Serbian Ceramic Society",
journal = "Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia",
title = "The effect of different particle sizes of bentonite from the Bogovina deposit on the Briggs-Rauscher oscillatory reaction",
pages = "71-72",
url = "https://hdl.handle.net/21.15107/rcub_cer_6748"
}

Maksimović, J., Pagnacco, M., Ajduković, M., Stevanović, G., Banković, P.,& Milutinović Nikolić, A.. (2023). The effect of different particle sizes of bentonite from the Bogovina deposit on the Briggs-Rauscher oscillatory reaction. in Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia
Serbian Ceramic Society., 71-72.
https://hdl.handle.net/21.15107/rcub_cer_6748

Maksimović J, Pagnacco M, Ajduković M, Stevanović G, Banković P, Milutinović Nikolić A. The effect of different particle sizes of bentonite from the Bogovina deposit on the Briggs-Rauscher oscillatory reaction. in Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia. 2023;:71-72.
https://hdl.handle.net/21.15107/rcub_cer_6748 .

Maksimović, Jelena, Pagnacco, Maja, Ajduković, Marija, Stevanović, Gordana, Banković, Predrag, Milutinović Nikolić, Aleksandra, "The effect of different particle sizes of bentonite from the Bogovina deposit on the Briggs-Rauscher oscillatory reaction" in Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia (2023):71-72,
https://hdl.handle.net/21.15107/rcub_cer_6748 .

TY  - CONF
AU  - Kosić, Višnja
AU  - Božić, Nataša
AU  - Dojnov, Biljana
AU  - Stevanović, Gordana
AU  - Banković, Predrag
AU  - Milutinović Nikolić, Aleksandra
AU  - Knežević-Jugović, Zorica
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6846
AB  - Clays are naturally occurring, environmentally friendly, chemically inert, thermostable, inexpensive resources that are easily modified into materials with tailored properties. As such, they can be used as suitable supports for enzyme immobilization and application in the food industry. Natural polysaccharides starch, xylan, pullulan, and its derivatives obtained by the action of enzymes, have numerous potentials for food industrial applications. In this work the enzyme supports were prepared from bentonite from Coal mine "Bogovina", Serbia by acid activation (AA), pillaring (P), and pillaring followed by acid activation (PAA). The characterization of the obtained materials included chemical and phase composition, surface acidity, and textural properties. After characterization, -amylase from Bacillus paralicheniformis (BliAmy), commercial xylanase from Sigma-Aldrich (Xyl), and pullulanase from B. paralicheniformis (BliPull) were immobilized on bentonite based supports by 24 h adsorption at 25 °C. The obtained biocatalysts BliAmy-AA (106 IU/g), Xyl-P (74 IU/g), and BliPull-PAA (45 IU/g) showed very good storage stability with the activity preserved after 4 weeks of testing. Products of hydrolysis were detected by TLC and indicate a promising application in the food industry.
PB  - Belgrade : Serbian Chemical Society
C3  - Abstract Book - XXII Congress EuroFoodChem, June 14-16, 2023, Belgrade, Serbia, 2023, 210-210
T1  - Stable, environmentally friendly and inexpensive biocatalysts for obtaining important ingredients applicable in the food industry
SP  - 210
EP  - 210
UR  - https://hdl.handle.net/21.15107/rcub_cer_6846
ER  - 

@conference{
author = "Kosić, Višnja and Božić, Nataša and Dojnov, Biljana and Stevanović, Gordana and Banković, Predrag and Milutinović Nikolić, Aleksandra and Knežević-Jugović, Zorica",
year = "2023",
abstract = "Clays are naturally occurring, environmentally friendly, chemically inert, thermostable, inexpensive resources that are easily modified into materials with tailored properties. As such, they can be used as suitable supports for enzyme immobilization and application in the food industry. Natural polysaccharides starch, xylan, pullulan, and its derivatives obtained by the action of enzymes, have numerous potentials for food industrial applications. In this work the enzyme supports were prepared from bentonite from Coal mine "Bogovina", Serbia by acid activation (AA), pillaring (P), and pillaring followed by acid activation (PAA). The characterization of the obtained materials included chemical and phase composition, surface acidity, and textural properties. After characterization, -amylase from Bacillus paralicheniformis (BliAmy), commercial xylanase from Sigma-Aldrich (Xyl), and pullulanase from B. paralicheniformis (BliPull) were immobilized on bentonite based supports by 24 h adsorption at 25 °C. The obtained biocatalysts BliAmy-AA (106 IU/g), Xyl-P (74 IU/g), and BliPull-PAA (45 IU/g) showed very good storage stability with the activity preserved after 4 weeks of testing. Products of hydrolysis were detected by TLC and indicate a promising application in the food industry.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "Abstract Book - XXII Congress EuroFoodChem, June 14-16, 2023, Belgrade, Serbia, 2023, 210-210",
title = "Stable, environmentally friendly and inexpensive biocatalysts for obtaining important ingredients applicable in the food industry",
pages = "210-210",
url = "https://hdl.handle.net/21.15107/rcub_cer_6846"
}

Kosić, V., Božić, N., Dojnov, B., Stevanović, G., Banković, P., Milutinović Nikolić, A.,& Knežević-Jugović, Z.. (2023). Stable, environmentally friendly and inexpensive biocatalysts for obtaining important ingredients applicable in the food industry. in Abstract Book - XXII Congress EuroFoodChem, June 14-16, 2023, Belgrade, Serbia, 2023, 210-210
Belgrade : Serbian Chemical Society., 210-210.
https://hdl.handle.net/21.15107/rcub_cer_6846

Kosić V, Božić N, Dojnov B, Stevanović G, Banković P, Milutinović Nikolić A, Knežević-Jugović Z. Stable, environmentally friendly and inexpensive biocatalysts for obtaining important ingredients applicable in the food industry. in Abstract Book - XXII Congress EuroFoodChem, June 14-16, 2023, Belgrade, Serbia, 2023, 210-210. 2023;:210-210.
https://hdl.handle.net/21.15107/rcub_cer_6846 .

Kosić, Višnja, Božić, Nataša, Dojnov, Biljana, Stevanović, Gordana, Banković, Predrag, Milutinović Nikolić, Aleksandra, Knežević-Jugović, Zorica, "Stable, environmentally friendly and inexpensive biocatalysts for obtaining important ingredients applicable in the food industry" in Abstract Book - XXII Congress EuroFoodChem, June 14-16, 2023, Belgrade, Serbia, 2023, 210-210 (2023):210-210,
https://hdl.handle.net/21.15107/rcub_cer_6846 .

TY  - CONF
AU  - Kosić, Višnja
AU  - Božić, Nataša
AU  - Dojnov, Biljana
AU  - Stevanović, Gordana
AU  - Milutinović Nikolić, Aleksandra
AU  - Knežević-Jugović, Zorica
AU  - Banković, Predrag
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6030
AB  - Some coal mines suffer from problem of having huge deposits of bentonite that they regard as undesirable, since bentonite can cause problem due to its swelling property. Instead of piling stacks of bentonite and regarding it as ecological problem the bentonite can be used as enzyme support by immobilization of enzymes as the challenging new application in the field of biotechnology. The enzyme catalysts in the industrial application present lower energy costs and are more environmentally friendly in comparison to traditional chemical processes. The advantages of enzymes are even more prominent when enzymes are applied in immobilized form. In this work the enzyme supports were prepared from bentonite from Coal mine "Bogovina", Serbia where bentonite, although valuable resource, is still considered to be tailings. Bentonite was modified by common methods: acid activation (AA), pillaring (P), and pillaring followed by acid activation (PAA) and tested as enzyme support. All the obtained materials were characterized by the X-ray powder diffraction and FTIR spectroscopy. The amylase, xylanase, and pullulanase were immobilized on different bentonite based supports by 24 h adsorption at 25 °C. The experimental results revealed that under the investigated conditions AA, P, and PAA, were the most suitable for amylase (106 IU/g), xylanase (74 IU/g), and pullulanase (45 IU/g) immobilization, respectively.
PB  - European Federation of Biotechnology
C3  - Programme and abstract book - Biotechnology for a circular bioeconomy: carbon capture, waste recycling and mitigation of global warming, 28-29 March 2023, online
T1  - The tailings from coal mine instead of waste became applicable as enzyme supports
SP  - 65
EP  - 65
UR  - https://hdl.handle.net/21.15107/rcub_cer_6030
ER  - 

@conference{
author = "Kosić, Višnja and Božić, Nataša and Dojnov, Biljana and Stevanović, Gordana and Milutinović Nikolić, Aleksandra and Knežević-Jugović, Zorica and Banković, Predrag",
year = "2023",
abstract = "Some coal mines suffer from problem of having huge deposits of bentonite that they regard as undesirable, since bentonite can cause problem due to its swelling property. Instead of piling stacks of bentonite and regarding it as ecological problem the bentonite can be used as enzyme support by immobilization of enzymes as the challenging new application in the field of biotechnology. The enzyme catalysts in the industrial application present lower energy costs and are more environmentally friendly in comparison to traditional chemical processes. The advantages of enzymes are even more prominent when enzymes are applied in immobilized form. In this work the enzyme supports were prepared from bentonite from Coal mine "Bogovina", Serbia where bentonite, although valuable resource, is still considered to be tailings. Bentonite was modified by common methods: acid activation (AA), pillaring (P), and pillaring followed by acid activation (PAA) and tested as enzyme support. All the obtained materials were characterized by the X-ray powder diffraction and FTIR spectroscopy. The amylase, xylanase, and pullulanase were immobilized on different bentonite based supports by 24 h adsorption at 25 °C. The experimental results revealed that under the investigated conditions AA, P, and PAA, were the most suitable for amylase (106 IU/g), xylanase (74 IU/g), and pullulanase (45 IU/g) immobilization, respectively.",
publisher = "European Federation of Biotechnology",
journal = "Programme and abstract book - Biotechnology for a circular bioeconomy: carbon capture, waste recycling and mitigation of global warming, 28-29 March 2023, online",
title = "The tailings from coal mine instead of waste became applicable as enzyme supports",
pages = "65-65",
url = "https://hdl.handle.net/21.15107/rcub_cer_6030"
}

Kosić, V., Božić, N., Dojnov, B., Stevanović, G., Milutinović Nikolić, A., Knežević-Jugović, Z.,& Banković, P.. (2023). The tailings from coal mine instead of waste became applicable as enzyme supports. in Programme and abstract book - Biotechnology for a circular bioeconomy: carbon capture, waste recycling and mitigation of global warming, 28-29 March 2023, online
European Federation of Biotechnology., 65-65.
https://hdl.handle.net/21.15107/rcub_cer_6030

Kosić V, Božić N, Dojnov B, Stevanović G, Milutinović Nikolić A, Knežević-Jugović Z, Banković P. The tailings from coal mine instead of waste became applicable as enzyme supports. in Programme and abstract book - Biotechnology for a circular bioeconomy: carbon capture, waste recycling and mitigation of global warming, 28-29 March 2023, online. 2023;:65-65.
https://hdl.handle.net/21.15107/rcub_cer_6030 .

Kosić, Višnja, Božić, Nataša, Dojnov, Biljana, Stevanović, Gordana, Milutinović Nikolić, Aleksandra, Knežević-Jugović, Zorica, Banković, Predrag, "The tailings from coal mine instead of waste became applicable as enzyme supports" in Programme and abstract book - Biotechnology for a circular bioeconomy: carbon capture, waste recycling and mitigation of global warming, 28-29 March 2023, online (2023):65-65,
https://hdl.handle.net/21.15107/rcub_cer_6030 .

TY  - CONF
AU  - Stevanović, Gordana
AU  - Jović-Jovičić, Nataša
AU  - Krstić, Jugoslav
AU  - Marinović, Sanja
AU  - Milutinović Nikolić, Aleksandra
AU  - Banković, Predrag
AU  - Ajduković, Marija
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6436
AB  - Catalytic degradation of tartrazine in the presence of Oxone®

was investigated. Oxone was activated by
nanocomposite catalysts consisted of cobalt supported on smectite with chitosan-derived carbon loading. The
catalyst was synthetized using an impregnation-carbonization procedure and NaHCO3 was used as green
porogen. Smectite rich bentonite clay from Bogovina, Serbia was used as started material. After milling,
sieving and hydroseparation the fractions containing particles up to 2 μm in diameter were separated (denoted
as S). The intercalation of chitosan into the smectite was performed according to the previously described
procedure [1]. Obtained chitosan-smectite nanocomposite (Ch-S) was submitted to the wetness impregnation
method by Co2+ ions [1]. The impregnation was performed by slow addition of Co(NO3)2 solution to Ch-S
powder resulting in 0.03 g Co2+ per 1 g of Ch-S. After drying, the sample was mixed with NaHCO3 in a mass
ratio 1:3, placed in a tube furnace and carbonized in a stream of N2 at 500°C for 1 h. The potassium
peroxymonosulfate (Oxone®

, i.e. 2KHSO5∙KHSO4∙K2SO4) was used as a source of sulfate radicals generated by
cobalt from the catalysts. The catalytic activity of the N/Co/cCh-S was compared with catalyst Co/cCh-S
obtained by the same synthesis procedure without activation by NaHCO3. The degradation of tartrazine was
monitored using UV–Vis spectrophotometry at wavelength of 426 nm within 60 minutes. It was found that
N/Co/cCh-S reached 100% of dye degradation after 30 minutes, while degradation in the presence of Co/cCh-S
was 77% for the same reaction time. The results of the catalytic tests were fitted by different kinetic models and
the first-order-kinetic model showed the best correlation. The first-order constant (k1) values for N/Co/cCh-S
and Co/cCh-S were 0.1286 min-1 and 0.0561 min-1, respectively. The results of this study confirmed that the
presence of NaHCO3 in the catalyst synthesis led to increased catalyst activity and accelerated tartrazine
degradation in the presence of Oxone®.
PB  - Bari, Italy : Digilabs
C3  - Scientific Research Abstracts - International Conference of European Clay Groups Association - EUROCLAY 2023, 24-27 July 2023, Bari, Italy
T1  - Cobalt-carbon-smectite catalysts in Oxone® induced oxidative degradation of tartrazine: The role of the NaHCO3 in the synthesis of the catalyst
VL  - 14
SP  - 279
EP  - 279
UR  - https://hdl.handle.net/21.15107/rcub_cer_6436
ER  - 

@conference{
author = "Stevanović, Gordana and Jović-Jovičić, Nataša and Krstić, Jugoslav and Marinović, Sanja and Milutinović Nikolić, Aleksandra and Banković, Predrag and Ajduković, Marija",
year = "2023",
abstract = "Catalytic degradation of tartrazine in the presence of Oxone®

was investigated. Oxone was activated by
nanocomposite catalysts consisted of cobalt supported on smectite with chitosan-derived carbon loading. The
catalyst was synthetized using an impregnation-carbonization procedure and NaHCO3 was used as green
porogen. Smectite rich bentonite clay from Bogovina, Serbia was used as started material. After milling,
sieving and hydroseparation the fractions containing particles up to 2 μm in diameter were separated (denoted
as S). The intercalation of chitosan into the smectite was performed according to the previously described
procedure [1]. Obtained chitosan-smectite nanocomposite (Ch-S) was submitted to the wetness impregnation
method by Co2+ ions [1]. The impregnation was performed by slow addition of Co(NO3)2 solution to Ch-S
powder resulting in 0.03 g Co2+ per 1 g of Ch-S. After drying, the sample was mixed with NaHCO3 in a mass
ratio 1:3, placed in a tube furnace and carbonized in a stream of N2 at 500°C for 1 h. The potassium
peroxymonosulfate (Oxone®

, i.e. 2KHSO5∙KHSO4∙K2SO4) was used as a source of sulfate radicals generated by
cobalt from the catalysts. The catalytic activity of the N/Co/cCh-S was compared with catalyst Co/cCh-S
obtained by the same synthesis procedure without activation by NaHCO3. The degradation of tartrazine was
monitored using UV–Vis spectrophotometry at wavelength of 426 nm within 60 minutes. It was found that
N/Co/cCh-S reached 100% of dye degradation after 30 minutes, while degradation in the presence of Co/cCh-S
was 77% for the same reaction time. The results of the catalytic tests were fitted by different kinetic models and
the first-order-kinetic model showed the best correlation. The first-order constant (k1) values for N/Co/cCh-S
and Co/cCh-S were 0.1286 min-1 and 0.0561 min-1, respectively. The results of this study confirmed that the
presence of NaHCO3 in the catalyst synthesis led to increased catalyst activity and accelerated tartrazine
degradation in the presence of Oxone®.",
publisher = "Bari, Italy : Digilabs",
journal = "Scientific Research Abstracts - International Conference of European Clay Groups Association - EUROCLAY 2023, 24-27 July 2023, Bari, Italy",
title = "Cobalt-carbon-smectite catalysts in Oxone® induced oxidative degradation of tartrazine: The role of the NaHCO3 in the synthesis of the catalyst",
volume = "14",
pages = "279-279",
url = "https://hdl.handle.net/21.15107/rcub_cer_6436"
}

Stevanović, G., Jović-Jovičić, N., Krstić, J., Marinović, S., Milutinović Nikolić, A., Banković, P.,& Ajduković, M.. (2023). Cobalt-carbon-smectite catalysts in Oxone® induced oxidative degradation of tartrazine: The role of the NaHCO3 in the synthesis of the catalyst. in Scientific Research Abstracts - International Conference of European Clay Groups Association - EUROCLAY 2023, 24-27 July 2023, Bari, Italy
Bari, Italy : Digilabs., 14, 279-279.
https://hdl.handle.net/21.15107/rcub_cer_6436

Stevanović G, Jović-Jovičić N, Krstić J, Marinović S, Milutinović Nikolić A, Banković P, Ajduković M. Cobalt-carbon-smectite catalysts in Oxone® induced oxidative degradation of tartrazine: The role of the NaHCO3 in the synthesis of the catalyst. in Scientific Research Abstracts - International Conference of European Clay Groups Association - EUROCLAY 2023, 24-27 July 2023, Bari, Italy. 2023;14:279-279.
https://hdl.handle.net/21.15107/rcub_cer_6436 .

Stevanović, Gordana, Jović-Jovičić, Nataša, Krstić, Jugoslav, Marinović, Sanja, Milutinović Nikolić, Aleksandra, Banković, Predrag, Ajduković, Marija, "Cobalt-carbon-smectite catalysts in Oxone® induced oxidative degradation of tartrazine: The role of the NaHCO3 in the synthesis of the catalyst" in Scientific Research Abstracts - International Conference of European Clay Groups Association - EUROCLAY 2023, 24-27 July 2023, Bari, Italy, 14 (2023):279-279,
https://hdl.handle.net/21.15107/rcub_cer_6436 .

TY  - CONF
AU  - Stevanović, Gordana
AU  - Jović-Jovičić, Nataša
AU  - Krstić, Jugoslav
AU  - Marinović, Sanja
AU  - Banković, Predrag
AU  - Ajduković, Marija
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6520
AB  - Wastewaters polluted with high concentration of dyes are produced by various industries.
Therefore, it is important to perform treatment of the dye-contaminated waters before their
discharge into recipients in order to protect the environment. Sulfate radical-based advanced
oxidation processes that involve use ofactivated Oxone® can be used for degradation of dyes.
In this work,nanocomposite catalysts constituted ofCo supported on smectite with chitosanderived
carbon were used for activation of Oxone. Catalysts were synthetizedusingan
impregnation-carbonization procedure and denoted as Co/cCh-S-T (T stands for applied
carbonization temperature). The carbonization was performed in the temperature range from
400°C to 700°C in the flow of N2 providing inert atmosphere. The synthesized catalysts were
fully characterized using XRPD, XPS, FTIR, HR-TEM, and low-temperature N2-
physisorption analysis, and evaluated in the Oxone® induced oxidative degradation of food
dye tartrazine. The best performing catalyst was investigated in detail regarding catalytic
degradation of tartrazine with respect to degradation time and different experimental
parameters (dye concentration, Oxone® concentration, temperature, and initial pH of the
reaction solution). The kinetic and thermodynamic parameters were calculated from the
experimental results.The selected catalyst showed excellent performance in the Oxone®
initiated tartrazine degradationat low temperatures (even at 25°C) and in the wide range of pH
values.
PB  - Serbian Ceramic Society
C3  - Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia
T1  - Evaluation of cobalt supported chitosan-derived carbon-smectite catalysts in Oxone® induced dye degradation
SP  - 37
EP  - 37
UR  - https://hdl.handle.net/21.15107/rcub_cer_6520
ER  - 

@conference{
author = "Stevanović, Gordana and Jović-Jovičić, Nataša and Krstić, Jugoslav and Marinović, Sanja and Banković, Predrag and Ajduković, Marija",
year = "2023",
abstract = "Wastewaters polluted with high concentration of dyes are produced by various industries.
Therefore, it is important to perform treatment of the dye-contaminated waters before their
discharge into recipients in order to protect the environment. Sulfate radical-based advanced
oxidation processes that involve use ofactivated Oxone® can be used for degradation of dyes.
In this work,nanocomposite catalysts constituted ofCo supported on smectite with chitosanderived
carbon were used for activation of Oxone. Catalysts were synthetizedusingan
impregnation-carbonization procedure and denoted as Co/cCh-S-T (T stands for applied
carbonization temperature). The carbonization was performed in the temperature range from
400°C to 700°C in the flow of N2 providing inert atmosphere. The synthesized catalysts were
fully characterized using XRPD, XPS, FTIR, HR-TEM, and low-temperature N2-
physisorption analysis, and evaluated in the Oxone® induced oxidative degradation of food
dye tartrazine. The best performing catalyst was investigated in detail regarding catalytic
degradation of tartrazine with respect to degradation time and different experimental
parameters (dye concentration, Oxone® concentration, temperature, and initial pH of the
reaction solution). The kinetic and thermodynamic parameters were calculated from the
experimental results.The selected catalyst showed excellent performance in the Oxone®
initiated tartrazine degradationat low temperatures (even at 25°C) and in the wide range of pH
values.",
publisher = "Serbian Ceramic Society",
journal = "Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia",
title = "Evaluation of cobalt supported chitosan-derived carbon-smectite catalysts in Oxone® induced dye degradation",
pages = "37-37",
url = "https://hdl.handle.net/21.15107/rcub_cer_6520"
}

Stevanović, G., Jović-Jovičić, N., Krstić, J., Marinović, S., Banković, P.,& Ajduković, M.. (2023). Evaluation of cobalt supported chitosan-derived carbon-smectite catalysts in Oxone® induced dye degradation. in Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia
Serbian Ceramic Society., 37-37.
https://hdl.handle.net/21.15107/rcub_cer_6520

Stevanović G, Jović-Jovičić N, Krstić J, Marinović S, Banković P, Ajduković M. Evaluation of cobalt supported chitosan-derived carbon-smectite catalysts in Oxone® induced dye degradation. in Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia. 2023;:37-37.
https://hdl.handle.net/21.15107/rcub_cer_6520 .

Stevanović, Gordana, Jović-Jovičić, Nataša, Krstić, Jugoslav, Marinović, Sanja, Banković, Predrag, Ajduković, Marija, "Evaluation of cobalt supported chitosan-derived carbon-smectite catalysts in Oxone® induced dye degradation" in Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia (2023):37-37,
https://hdl.handle.net/21.15107/rcub_cer_6520 .

TY  - CONF
AU  - Stevanović, Gordana
AU  - Ajduković, Marija
AU  - Jović-Jovičić, Nataša
AU  - Banković, Predrag
AU  - Mojović, Zorica
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6744
AB  - Bentonite clay has shown to be a versatile material that can be easily modified and applied as 
an adsorbent, (electro)catalyst, or as a support for (electro)catalyst. The carbon-clay composites combine a relatively high specific surface area of the clay with a good electrical conductivity of carbon.In this paper, the effect of the applied carbonization procedure on the electrochemical properties of bentonite-carbon composite was investigated. Chitosan-modified bentonite was carbonized by conventional thermal degradation and by the hydrothermal procedure. The electrochemical characterization was performed by cyclic voltammetry and electrochemical impedance spectroscopy. The response to Fe(CN)63-/4- and Ru(NH3)62+/3+ redox probe showed that the thermally treated sample shows somewhat higher electrochemical activity and lower charge-transfer resistance. However, an investigation of composites activity toward 
 minophenazone, performed in the pH range 3-9 showed that the hydrothermally obtained sample shows higher activity at pH above 5, while the thermally obtained sample was more active at pH below 5.
PB  - Serbian Ceramic Society
C3  - Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia
T1  - Carbonized chitosan-bentonite as electrode material
SP  - 73
EP  - 73
UR  - https://hdl.handle.net/21.15107/rcub_cer_6744
ER  - 

@conference{
author = "Stevanović, Gordana and Ajduković, Marija and Jović-Jovičić, Nataša and Banković, Predrag and Mojović, Zorica",
year = "2023",
abstract = "Bentonite clay has shown to be a versatile material that can be easily modified and applied as 
an adsorbent, (electro)catalyst, or as a support for (electro)catalyst. The carbon-clay composites combine a relatively high specific surface area of the clay with a good electrical conductivity of carbon.In this paper, the effect of the applied carbonization procedure on the electrochemical properties of bentonite-carbon composite was investigated. Chitosan-modified bentonite was carbonized by conventional thermal degradation and by the hydrothermal procedure. The electrochemical characterization was performed by cyclic voltammetry and electrochemical impedance spectroscopy. The response to Fe(CN)63-/4- and Ru(NH3)62+/3+ redox probe showed that the thermally treated sample shows somewhat higher electrochemical activity and lower charge-transfer resistance. However, an investigation of composites activity toward 
 minophenazone, performed in the pH range 3-9 showed that the hydrothermally obtained sample shows higher activity at pH above 5, while the thermally obtained sample was more active at pH below 5.",
publisher = "Serbian Ceramic Society",
journal = "Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia",
title = "Carbonized chitosan-bentonite as electrode material",
pages = "73-73",
url = "https://hdl.handle.net/21.15107/rcub_cer_6744"
}

Stevanović, G., Ajduković, M., Jović-Jovičić, N., Banković, P.,& Mojović, Z.. (2023). Carbonized chitosan-bentonite as electrode material. in Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia
Serbian Ceramic Society., 73-73.
https://hdl.handle.net/21.15107/rcub_cer_6744

Stevanović G, Ajduković M, Jović-Jovičić N, Banković P, Mojović Z. Carbonized chitosan-bentonite as electrode material. in Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia. 2023;:73-73.
https://hdl.handle.net/21.15107/rcub_cer_6744 .

Stevanović, Gordana, Ajduković, Marija, Jović-Jovičić, Nataša, Banković, Predrag, Mojović, Zorica, "Carbonized chitosan-bentonite as electrode material" in Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia (2023):73-73,
https://hdl.handle.net/21.15107/rcub_cer_6744 .

TY  - CONF
AU  - Marinović, Sanja
AU  - Mudrinić, Tihana
AU  - Ajduković, Marija
AU  - Jović-Jovičić, Nataša
AU  - Stevanović, Gordana
AU  - Banković, Predrag
AU  - Novaković, Tatjana
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6542
AB  - Cobalt-doped alumina catalyst was tested in peroxymonosulfate-induced degradation of two
textile dyes: anionic-Orange G (OG) and cationic-Basic Blue 41 (BB). Oxone®, mixed salt
containing peroxymonosulfate as an active component, was used as an oxidizing agent.
Catalytic tests were performed in a thermostated reactor equipped with a mechanical stirrer.
Dyes degradation was followed using a UV-Vis spectrophotometer. Characteristic peak
maximum in UV-Vis spectrum was identified at λ=478 nm for OG, and at λ=609 nm for BB.
Two OG concentrations were applied: 20 mg dm-3 and 50 mg dm-3. BB concentration was 20
mg dm-3 in all experiments. The reaction temperature was 30 ºC. Apart from simultaneous
dyes degradation, single-component solution degradation tests were also performed. Both
dyes were found to be degradable in single dyes systems, with OG showing a higher
degradation rate. When it comes to simultaneous degradation, it was noticed that the
degradation of the BB did not occur while OG was present in the system. This phenomenon
can probably be attributed to the difference in the molecular structure and charge of the
investigated dyes.
PB  - Serbian Ceramic Society
C3  - Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia
T1  - Simultaneous degradation of two textile dyes Orange G and Basic blue 41
SP  - 79
EP  - 79
UR  - https://hdl.handle.net/21.15107/rcub_cer_6542
ER  - 

@conference{
author = "Marinović, Sanja and Mudrinić, Tihana and Ajduković, Marija and Jović-Jovičić, Nataša and Stevanović, Gordana and Banković, Predrag and Novaković, Tatjana",
year = "2023",
abstract = "Cobalt-doped alumina catalyst was tested in peroxymonosulfate-induced degradation of two
textile dyes: anionic-Orange G (OG) and cationic-Basic Blue 41 (BB). Oxone®, mixed salt
containing peroxymonosulfate as an active component, was used as an oxidizing agent.
Catalytic tests were performed in a thermostated reactor equipped with a mechanical stirrer.
Dyes degradation was followed using a UV-Vis spectrophotometer. Characteristic peak
maximum in UV-Vis spectrum was identified at λ=478 nm for OG, and at λ=609 nm for BB.
Two OG concentrations were applied: 20 mg dm-3 and 50 mg dm-3. BB concentration was 20
mg dm-3 in all experiments. The reaction temperature was 30 ºC. Apart from simultaneous
dyes degradation, single-component solution degradation tests were also performed. Both
dyes were found to be degradable in single dyes systems, with OG showing a higher
degradation rate. When it comes to simultaneous degradation, it was noticed that the
degradation of the BB did not occur while OG was present in the system. This phenomenon
can probably be attributed to the difference in the molecular structure and charge of the
investigated dyes.",
publisher = "Serbian Ceramic Society",
journal = "Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia",
title = "Simultaneous degradation of two textile dyes Orange G and Basic blue 41",
pages = "79-79",
url = "https://hdl.handle.net/21.15107/rcub_cer_6542"
}

Marinović, S., Mudrinić, T., Ajduković, M., Jović-Jovičić, N., Stevanović, G., Banković, P.,& Novaković, T.. (2023). Simultaneous degradation of two textile dyes Orange G and Basic blue 41. in Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia
Serbian Ceramic Society., 79-79.
https://hdl.handle.net/21.15107/rcub_cer_6542

Marinović S, Mudrinić T, Ajduković M, Jović-Jovičić N, Stevanović G, Banković P, Novaković T. Simultaneous degradation of two textile dyes Orange G and Basic blue 41. in Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia. 2023;:79-79.
https://hdl.handle.net/21.15107/rcub_cer_6542 .

Marinović, Sanja, Mudrinić, Tihana, Ajduković, Marija, Jović-Jovičić, Nataša, Stevanović, Gordana, Banković, Predrag, Novaković, Tatjana, "Simultaneous degradation of two textile dyes Orange G and Basic blue 41" in Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia (2023):79-79,
https://hdl.handle.net/21.15107/rcub_cer_6542 .

TY  - CONF
AU  - Stevanović, Gordana
AU  - Jović-Jovičić, Nataša
AU  - Marinović, Sanja
AU  - Mudrinić, Tihana
AU  - Mojović, Zorica
AU  - Banković, Predrag
AU  - Ajduković, Marija
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6521
AB  - Nowadays, environmental pollution caused by antibiotics attracts extensive attention.
Adsorption has been successfully applied in the treatment of wastewater loaded by
pharmaceutics, while diverse natural and eco-friendly materials have been recognized as
promising adsorbents. In this work smectite clay from Bogovina (Serbia) and biopolymer
chitosan (derived from waste of crustaceans) were used as eco-friendly starting materials for
the adsorbent synthesis. The combination of transition metal, carbon materials, and clay
minerals represents a useful way to develop functional nanocomposites with benefiting
synergistic properties of all components.
Simple, one-step hydrothermal procedure conducted at 180 ℃ for 24h was applied for
synthesis of cobalt/smectite/chitosan-derived carbon (H_Co/C-S) nanocomposite. The sample
was characterized using XRPD, FTIR, and low-temperature N2-physisorption analysis and
tested as adsorbent of ciprofloxacin (CPX). The effects of temperature, initial pH, and CPX
concentration on the adsorption process were investigated. The adsorption results were fitted
by Langmuir, Freundlich, and Sips adsorption isotherms. Additionally, CPX adsorption was
described by appropriate kinetics and thermodynamic parameters. It was found that
temperature increase had the beneficial effect on CPX adsorption, while investigated
adsorbent was efficient in a broad pH range (4-8). The H_Co/C-S adsorbent was found to be
efficient in the removal of CPX antibiotic.
PB  - Serbian Ceramic Society
C3  - Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia
T1  - Ciprofloxacin adsorption onto Co/chitosan-derived carbon/smectite nanocomposite obtained by the hydrothermal synthesis
SP  - 76
EP  - 76
UR  - https://hdl.handle.net/21.15107/rcub_cer_6521
ER  - 

@conference{
author = "Stevanović, Gordana and Jović-Jovičić, Nataša and Marinović, Sanja and Mudrinić, Tihana and Mojović, Zorica and Banković, Predrag and Ajduković, Marija",
year = "2023",
abstract = "Nowadays, environmental pollution caused by antibiotics attracts extensive attention.
Adsorption has been successfully applied in the treatment of wastewater loaded by
pharmaceutics, while diverse natural and eco-friendly materials have been recognized as
promising adsorbents. In this work smectite clay from Bogovina (Serbia) and biopolymer
chitosan (derived from waste of crustaceans) were used as eco-friendly starting materials for
the adsorbent synthesis. The combination of transition metal, carbon materials, and clay
minerals represents a useful way to develop functional nanocomposites with benefiting
synergistic properties of all components.
Simple, one-step hydrothermal procedure conducted at 180 ℃ for 24h was applied for
synthesis of cobalt/smectite/chitosan-derived carbon (H_Co/C-S) nanocomposite. The sample
was characterized using XRPD, FTIR, and low-temperature N2-physisorption analysis and
tested as adsorbent of ciprofloxacin (CPX). The effects of temperature, initial pH, and CPX
concentration on the adsorption process were investigated. The adsorption results were fitted
by Langmuir, Freundlich, and Sips adsorption isotherms. Additionally, CPX adsorption was
described by appropriate kinetics and thermodynamic parameters. It was found that
temperature increase had the beneficial effect on CPX adsorption, while investigated
adsorbent was efficient in a broad pH range (4-8). The H_Co/C-S adsorbent was found to be
efficient in the removal of CPX antibiotic.",
publisher = "Serbian Ceramic Society",
journal = "Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia",
title = "Ciprofloxacin adsorption onto Co/chitosan-derived carbon/smectite nanocomposite obtained by the hydrothermal synthesis",
pages = "76-76",
url = "https://hdl.handle.net/21.15107/rcub_cer_6521"
}

Stevanović, G., Jović-Jovičić, N., Marinović, S., Mudrinić, T., Mojović, Z., Banković, P.,& Ajduković, M.. (2023). Ciprofloxacin adsorption onto Co/chitosan-derived carbon/smectite nanocomposite obtained by the hydrothermal synthesis. in Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia
Serbian Ceramic Society., 76-76.
https://hdl.handle.net/21.15107/rcub_cer_6521

Stevanović G, Jović-Jovičić N, Marinović S, Mudrinić T, Mojović Z, Banković P, Ajduković M. Ciprofloxacin adsorption onto Co/chitosan-derived carbon/smectite nanocomposite obtained by the hydrothermal synthesis. in Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia. 2023;:76-76.
https://hdl.handle.net/21.15107/rcub_cer_6521 .

Stevanović, Gordana, Jović-Jovičić, Nataša, Marinović, Sanja, Mudrinić, Tihana, Mojović, Zorica, Banković, Predrag, Ajduković, Marija, "Ciprofloxacin adsorption onto Co/chitosan-derived carbon/smectite nanocomposite obtained by the hydrothermal synthesis" in Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia (2023):76-76,
https://hdl.handle.net/21.15107/rcub_cer_6521 .

TY  - CONF
AU  - Marinović, Sanja
AU  - Mudrinić, Tihana
AU  - Ajduković, Marija
AU  - Jović-Jovičić, Nataša
AU  - Banković, Predrag
AU  - Novaković, Tatjana
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6543
AB  - Catalytic oxidative degradation of a textile dye Orange G was investigated in the reaction
system where oxidant Oxone® was used as a source of SO4˙ˉ anion radicals. Cobalt-doped
alumina was tested as a heterogenous catalysts for Oxone® activation. The catalyst was
synthetized and calcined at 500 °C. The influence of different reaction parameters was
followed: the Oxone® dosage, Orange G concentration and initial pH of the reaction solution.
The Oxone® dosage was varied from 10 mg to 80 mg. Small differences in degradation
efficiency were observed but mass of 40 mg of Oxone® was found to be optimal in the first
hour of the reaction. The effect of the Orange G concentration was investigated in the range
from 20 mg dm-3 to 50mg dm-3. For the concentration of 20 mg dm-3 the reaction was much
faster than for other investigated concentrations. The effect of the pH was tested in the range
from 2 to 9. The optimal pH range was found to be between 6 and 9, but reaction was feasible
also for lower pH. It can be concluded that investigated catalyst is applicable with high
efficiency in the wide range of Oxone® dosages, dye concentrations and initial pH values.
PB  - Serbian Ceramic Society
C3  - Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia
T1  - Catalytic oxidative degradation of Orange G dye: the effect of different reaction parameters
SP  - 80
EP  - 80
UR  - https://hdl.handle.net/21.15107/rcub_cer_6543
ER  - 

@conference{
author = "Marinović, Sanja and Mudrinić, Tihana and Ajduković, Marija and Jović-Jovičić, Nataša and Banković, Predrag and Novaković, Tatjana",
year = "2023",
abstract = "Catalytic oxidative degradation of a textile dye Orange G was investigated in the reaction
system where oxidant Oxone® was used as a source of SO4˙ˉ anion radicals. Cobalt-doped
alumina was tested as a heterogenous catalysts for Oxone® activation. The catalyst was
synthetized and calcined at 500 °C. The influence of different reaction parameters was
followed: the Oxone® dosage, Orange G concentration and initial pH of the reaction solution.
The Oxone® dosage was varied from 10 mg to 80 mg. Small differences in degradation
efficiency were observed but mass of 40 mg of Oxone® was found to be optimal in the first
hour of the reaction. The effect of the Orange G concentration was investigated in the range
from 20 mg dm-3 to 50mg dm-3. For the concentration of 20 mg dm-3 the reaction was much
faster than for other investigated concentrations. The effect of the pH was tested in the range
from 2 to 9. The optimal pH range was found to be between 6 and 9, but reaction was feasible
also for lower pH. It can be concluded that investigated catalyst is applicable with high
efficiency in the wide range of Oxone® dosages, dye concentrations and initial pH values.",
publisher = "Serbian Ceramic Society",
journal = "Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia",
title = "Catalytic oxidative degradation of Orange G dye: the effect of different reaction parameters",
pages = "80-80",
url = "https://hdl.handle.net/21.15107/rcub_cer_6543"
}

Marinović, S., Mudrinić, T., Ajduković, M., Jović-Jovičić, N., Banković, P.,& Novaković, T.. (2023). Catalytic oxidative degradation of Orange G dye: the effect of different reaction parameters. in Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia
Serbian Ceramic Society., 80-80.
https://hdl.handle.net/21.15107/rcub_cer_6543

Marinović S, Mudrinić T, Ajduković M, Jović-Jovičić N, Banković P, Novaković T. Catalytic oxidative degradation of Orange G dye: the effect of different reaction parameters. in Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia. 2023;:80-80.
https://hdl.handle.net/21.15107/rcub_cer_6543 .

Marinović, Sanja, Mudrinić, Tihana, Ajduković, Marija, Jović-Jovičić, Nataša, Banković, Predrag, Novaković, Tatjana, "Catalytic oxidative degradation of Orange G dye: the effect of different reaction parameters" in Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia (2023):80-80,
https://hdl.handle.net/21.15107/rcub_cer_6543 .

TY  - CONF
AU  - Marinović, Sanja
AU  - Mudrinić, Tihana
AU  - Ajduković, Marija
AU  - Jović-Jovičić, Nataša
AU  - Banković, Predrag
AU  - Novaković, Tatjana
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6523
AB  - Cobalt-doped alumina catalyst was tested in peroxymonosulfate-induced degradation of two
textile dyes: anionic-Orange G (OG) and cationic-Basic Blue 41 (BB). Oxone®, mixed salt
containing peroxymonosulfate as an active component, was used as an oxidizing agent.
Catalytic tests were performed in a thermostated reactor equipped with a mechanical stirrer.
Dyes degradation was followed using a UV-Vis spectrophotometer. Characteristic peak
maximum in UV-Vis spectrum was identified at λ=478 nm for OG, and at λ=609 nm for BB.
Two OG concentrations were applied: 20 mg dm-3 and 50 mg dm-3. BB concentration was 20
mg dm-3 in all experiments. The reaction temperature was 30 ºC. Apart from simultaneous
dyes degradation, single-component solution degradation tests were also performed. Both
dyes were found to be degradable in single dyes systems, with OG showing a higher
degradation rate. When it comes to simultaneous degradation, it was noticed that the
degradation of the BB did not occur while OG was present in the system. This phenomenon
can probably be attributed to the difference in the molecular structure and charge of the
investigated dyes.
PB  - Serbian Ceramic Society
C3  - Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia
T1  - The effect of the initial temperature and pH on textile dye catalytic oxidative degradation using cobalt-doped alumina catalysts
SP  - 78
EP  - 79
UR  - https://hdl.handle.net/21.15107/rcub_cer_6523
ER  - 

@conference{
author = "Marinović, Sanja and Mudrinić, Tihana and Ajduković, Marija and Jović-Jovičić, Nataša and Banković, Predrag and Novaković, Tatjana",
year = "2023",
abstract = "Cobalt-doped alumina catalyst was tested in peroxymonosulfate-induced degradation of two
textile dyes: anionic-Orange G (OG) and cationic-Basic Blue 41 (BB). Oxone®, mixed salt
containing peroxymonosulfate as an active component, was used as an oxidizing agent.
Catalytic tests were performed in a thermostated reactor equipped with a mechanical stirrer.
Dyes degradation was followed using a UV-Vis spectrophotometer. Characteristic peak
maximum in UV-Vis spectrum was identified at λ=478 nm for OG, and at λ=609 nm for BB.
Two OG concentrations were applied: 20 mg dm-3 and 50 mg dm-3. BB concentration was 20
mg dm-3 in all experiments. The reaction temperature was 30 ºC. Apart from simultaneous
dyes degradation, single-component solution degradation tests were also performed. Both
dyes were found to be degradable in single dyes systems, with OG showing a higher
degradation rate. When it comes to simultaneous degradation, it was noticed that the
degradation of the BB did not occur while OG was present in the system. This phenomenon
can probably be attributed to the difference in the molecular structure and charge of the
investigated dyes.",
publisher = "Serbian Ceramic Society",
journal = "Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia",
title = "The effect of the initial temperature and pH on textile dye catalytic oxidative degradation using cobalt-doped alumina catalysts",
pages = "78-79",
url = "https://hdl.handle.net/21.15107/rcub_cer_6523"
}

Marinović, S., Mudrinić, T., Ajduković, M., Jović-Jovičić, N., Banković, P.,& Novaković, T.. (2023). The effect of the initial temperature and pH on textile dye catalytic oxidative degradation using cobalt-doped alumina catalysts. in Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia
Serbian Ceramic Society., 78-79.
https://hdl.handle.net/21.15107/rcub_cer_6523

Marinović S, Mudrinić T, Ajduković M, Jović-Jovičić N, Banković P, Novaković T. The effect of the initial temperature and pH on textile dye catalytic oxidative degradation using cobalt-doped alumina catalysts. in Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia. 2023;:78-79.
https://hdl.handle.net/21.15107/rcub_cer_6523 .

Marinović, Sanja, Mudrinić, Tihana, Ajduković, Marija, Jović-Jovičić, Nataša, Banković, Predrag, Novaković, Tatjana, "The effect of the initial temperature and pH on textile dye catalytic oxidative degradation using cobalt-doped alumina catalysts" in Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia (2023):78-79,
https://hdl.handle.net/21.15107/rcub_cer_6523 .

TY  - CONF
AU  - Stevanović, Gordana
AU  - Ajduković, Marija
AU  - Jović-Jovičić, Nataša
AU  - Marinović, Sanja
AU  - Pantić, Biljana
AU  - Banković, Predrag
AU  - Mudrinić, Tihana
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6522
AB  - Seawater electrolysis has recently been recognized as a new hope for affordable renewable
energy storage. However, its practical application is still limited due to the presence of
various electroactive ions in seawater. For example, the chloride ions compete with the
oxygen evolution reaction (OER) causing low efficiency of the OER, and corrosion of both
the anode and the cathode. To overcome these issues, the development of catalysts with high
activity and selectivity towards OER is of primary importance.Herein, Co supported
chitosan–derived carbon–smectite nanocomposite (Co/cCh-S) was tested as an electrocatalyst
for the OER in alkaline and simulated alkaline seawater solution. Co/cCh-S was previously
synthetized using impregnation–carbonization method at 400 °C in an inert atmosphere and
characterized in detail. The electrochemical performance of Co/cCh-S modified GCE was
studied by cyclic voltammetry, linear sweep voltammetry, and electrochemical impedance
spectroscopy. According to the obtained values for onset potential, overpotential, and Tafel
slope, the Co/cCh-S electrode could be considered a good electrocatalyst for OER in an
alkaline solution. Moreover, no noticeable change in the performance of the Co/cCh-S
electrode was observed in the presence of chloride ions. This work could be a starting point
for designing an inexpensive, earth-abundant OER catalyst for seawater electrolysis.
PB  - Serbian Ceramic Society
C3  - Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia
T1  - Co supported chitosan–derived carbon–smectite–catalyst for oxygen evolution reaction in simulated alkaline seawater solution
SP  - 77
EP  - 77
UR  - https://hdl.handle.net/21.15107/rcub_cer_6522
ER  - 

@conference{
author = "Stevanović, Gordana and Ajduković, Marija and Jović-Jovičić, Nataša and Marinović, Sanja and Pantić, Biljana and Banković, Predrag and Mudrinić, Tihana",
year = "2023",
abstract = "Seawater electrolysis has recently been recognized as a new hope for affordable renewable
energy storage. However, its practical application is still limited due to the presence of
various electroactive ions in seawater. For example, the chloride ions compete with the
oxygen evolution reaction (OER) causing low efficiency of the OER, and corrosion of both
the anode and the cathode. To overcome these issues, the development of catalysts with high
activity and selectivity towards OER is of primary importance.Herein, Co supported
chitosan–derived carbon–smectite nanocomposite (Co/cCh-S) was tested as an electrocatalyst
for the OER in alkaline and simulated alkaline seawater solution. Co/cCh-S was previously
synthetized using impregnation–carbonization method at 400 °C in an inert atmosphere and
characterized in detail. The electrochemical performance of Co/cCh-S modified GCE was
studied by cyclic voltammetry, linear sweep voltammetry, and electrochemical impedance
spectroscopy. According to the obtained values for onset potential, overpotential, and Tafel
slope, the Co/cCh-S electrode could be considered a good electrocatalyst for OER in an
alkaline solution. Moreover, no noticeable change in the performance of the Co/cCh-S
electrode was observed in the presence of chloride ions. This work could be a starting point
for designing an inexpensive, earth-abundant OER catalyst for seawater electrolysis.",
publisher = "Serbian Ceramic Society",
journal = "Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia",
title = "Co supported chitosan–derived carbon–smectite–catalyst for oxygen evolution reaction in simulated alkaline seawater solution",
pages = "77-77",
url = "https://hdl.handle.net/21.15107/rcub_cer_6522"
}

Stevanović, G., Ajduković, M., Jović-Jovičić, N., Marinović, S., Pantić, B., Banković, P.,& Mudrinić, T.. (2023). Co supported chitosan–derived carbon–smectite–catalyst for oxygen evolution reaction in simulated alkaline seawater solution. in Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia
Serbian Ceramic Society., 77-77.
https://hdl.handle.net/21.15107/rcub_cer_6522

Stevanović G, Ajduković M, Jović-Jovičić N, Marinović S, Pantić B, Banković P, Mudrinić T. Co supported chitosan–derived carbon–smectite–catalyst for oxygen evolution reaction in simulated alkaline seawater solution. in Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia. 2023;:77-77.
https://hdl.handle.net/21.15107/rcub_cer_6522 .

Stevanović, Gordana, Ajduković, Marija, Jović-Jovičić, Nataša, Marinović, Sanja, Pantić, Biljana, Banković, Predrag, Mudrinić, Tihana, "Co supported chitosan–derived carbon–smectite–catalyst for oxygen evolution reaction in simulated alkaline seawater solution" in Program and book of abstracts - Serbian Ceramics Society Conference - Advanced Ceramics and Application XI, New Frontiers in Multifunctional Material Science and Processing,18-20 th September 2023. Belgrade, Serbia (2023):77-77,
https://hdl.handle.net/21.15107/rcub_cer_6522 .

TY  - JOUR
AU  - Velić, Natalija
AU  - Stjepanović, Marija
AU  - Pavlović, Stefan
AU  - Bagherifam, Saeed
AU  - Banković, Predrag
AU  - Jović-Jovičić, Nataša
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6901
AB  - Since the synthetic dye Congo red and nitrate are notorious contributors to water pollution
due to their persistent and potentially toxic nature, it is necessary to develop new efficient methods to
remove them from water bodies. Native lignocellulosic materials as biosorbents are mostly inferior,
i.e., the adsorption capacities of native materials are lower. Therefore, attempts have been made to
improve the adsorption capacities of such materials by physical and/or chemical methods, including
the production of biochar. In this study, adsorptive removal was investigated using a novel biosorbent
(mPWS) obtained by modifying poplar (waste) sawdust through quaternisation. The characterisation
of mPWS included SEM/EDX, FTIR, and MIP analysis. The adsorption of CR and nitrate onto mPWS
was studied in a batch system, as a function of contact time (1–240 min), biosorbent concentration
(1–8 g/dm3), and initial adsorbate concentration (25–200 mg/dm3). In all experiments, a high
removal of both adsorbates, from 60 to over 90%, was achieved. Langmuir and Freundlich adsorption
isotherm models were used in order to describe equilibrium adsorption data, while pseudo-first-order
and pseudo-second-order kinetic models, and the intraparticle diffusion model, were used to describe
possible adsorption mechanisms. The Langmuir model fit the adsorption data of CR well, while the
nitrate adsorption process was better interpreted with the Freundlich isotherm model. The kinetics
data for both CR and nitrate agreed with the pseudo-second-order kinetics model, while analysis
using the intraparticle diffusion model indicated two rate-limiting steps during the adsorption
process. Based on the results, it can be concluded that the tested novel biosorbent can be effectively
used for the removal of CR and nitrate from water (with its adsorption capacities being 70.3 mg/g
and 43.6 mg/g, respectively).
PB  - MDPI
T2  - Water
T1  - Modified Lignocellulosic Waste for the Amelioration of Water Quality: Adsorptive Removal of Congo Red and Nitrate Using Modified Poplar Sawdust
VL  - 15
IS  - 21
SP  - 3776
DO  - 10.3390/w15213776
ER  - 

@article{
author = "Velić, Natalija and Stjepanović, Marija and Pavlović, Stefan and Bagherifam, Saeed and Banković, Predrag and Jović-Jovičić, Nataša",
year = "2023",
abstract = "Since the synthetic dye Congo red and nitrate are notorious contributors to water pollution
due to their persistent and potentially toxic nature, it is necessary to develop new efficient methods to
remove them from water bodies. Native lignocellulosic materials as biosorbents are mostly inferior,
i.e., the adsorption capacities of native materials are lower. Therefore, attempts have been made to
improve the adsorption capacities of such materials by physical and/or chemical methods, including
the production of biochar. In this study, adsorptive removal was investigated using a novel biosorbent
(mPWS) obtained by modifying poplar (waste) sawdust through quaternisation. The characterisation
of mPWS included SEM/EDX, FTIR, and MIP analysis. The adsorption of CR and nitrate onto mPWS
was studied in a batch system, as a function of contact time (1–240 min), biosorbent concentration
(1–8 g/dm3), and initial adsorbate concentration (25–200 mg/dm3). In all experiments, a high
removal of both adsorbates, from 60 to over 90%, was achieved. Langmuir and Freundlich adsorption
isotherm models were used in order to describe equilibrium adsorption data, while pseudo-first-order
and pseudo-second-order kinetic models, and the intraparticle diffusion model, were used to describe
possible adsorption mechanisms. The Langmuir model fit the adsorption data of CR well, while the
nitrate adsorption process was better interpreted with the Freundlich isotherm model. The kinetics
data for both CR and nitrate agreed with the pseudo-second-order kinetics model, while analysis
using the intraparticle diffusion model indicated two rate-limiting steps during the adsorption
process. Based on the results, it can be concluded that the tested novel biosorbent can be effectively
used for the removal of CR and nitrate from water (with its adsorption capacities being 70.3 mg/g
and 43.6 mg/g, respectively).",
publisher = "MDPI",
journal = "Water",
title = "Modified Lignocellulosic Waste for the Amelioration of Water Quality: Adsorptive Removal of Congo Red and Nitrate Using Modified Poplar Sawdust",
volume = "15",
number = "21",
pages = "3776",
doi = "10.3390/w15213776"
}

Velić, N., Stjepanović, M., Pavlović, S., Bagherifam, S., Banković, P.,& Jović-Jovičić, N.. (2023). Modified Lignocellulosic Waste for the Amelioration of Water Quality: Adsorptive Removal of Congo Red and Nitrate Using Modified Poplar Sawdust. in Water
MDPI., 15(21), 3776.
https://doi.org/10.3390/w15213776

Velić N, Stjepanović M, Pavlović S, Bagherifam S, Banković P, Jović-Jovičić N. Modified Lignocellulosic Waste for the Amelioration of Water Quality: Adsorptive Removal of Congo Red and Nitrate Using Modified Poplar Sawdust. in Water. 2023;15(21):3776.
doi:10.3390/w15213776 .

Velić, Natalija, Stjepanović, Marija, Pavlović, Stefan, Bagherifam, Saeed, Banković, Predrag, Jović-Jovičić, Nataša, "Modified Lignocellulosic Waste for the Amelioration of Water Quality: Adsorptive Removal of Congo Red and Nitrate Using Modified Poplar Sawdust" in Water, 15, no. 21 (2023):3776,
https://doi.org/10.3390/w15213776 . .

TY  - JOUR
AU  - Ajduković, Marija
AU  - Stevanović, Gordana
AU  - Marinović, Sanja
AU  - Mojović, Zorica
AU  - Banković, Predrag
AU  - Radulović, Katarina
AU  - Jović-Jovičić, Nataša
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6712
AB  - The employment of compounds obtained from natural sources to produce adsorbents and their application in the elimination of antibiotics from industrial effluents have gained significant attention because of their low production cost and sustainability. Herein, chitosan (biopolymer) and smectite (abundant clay mineral) were used for the low-cost and eco-friendly synthesis of a new type of adsorbent. A low-energy-consumption hydrothermal process was applied to the synthesis of the chitosan-derived carbon–smectite nanocomposite with cobalt (H_Co/C-S). The produced nanocomposite was characterized using elemental analysis, ICP-OES, XRPD, low-temperature N2 adsorption–desorption isotherms, FTIR analysis, and point of zero charge. H_Co/C-S (SBET = 0.73 m2 g−1, d001 = 1.40 nm, pHPZC = 5.3) was evaluated as a ciprofloxacin adsorbent in aqueous solution. Experimental data were fitted with different kinetic models and interpreted by selected adsorption isotherms. The pseudo-second-order model was found to be the most appropriate, while ciprofloxacin adsorption onto H_Co/C-S was best described by the Redlich–Peterson isotherm (R2 = 0.985). The maximum adsorption capacity of H_Co/C-S, according to the Langmuir isotherm (R2 = 0.977), was 72.3 mg g−1. Desorption and thermodynamic studies were performed. The obtained results indicated that the new hierarchically designed H_Co/C-S has promising potential to be further tested for application in real wastewater treatment.
PB  - MDPI
T2  - Water
T1  - Ciprofloxacin Adsorption onto a Smectite–Chitosan-Derived Nanocomposite Obtained by Hydrothermal Synthesis
VL  - 15
IS  - 14
SP  - 2608
DO  - 10.3390/w15142608
ER  - 

@article{
author = "Ajduković, Marija and Stevanović, Gordana and Marinović, Sanja and Mojović, Zorica and Banković, Predrag and Radulović, Katarina and Jović-Jovičić, Nataša",
year = "2023",
abstract = "The employment of compounds obtained from natural sources to produce adsorbents and their application in the elimination of antibiotics from industrial effluents have gained significant attention because of their low production cost and sustainability. Herein, chitosan (biopolymer) and smectite (abundant clay mineral) were used for the low-cost and eco-friendly synthesis of a new type of adsorbent. A low-energy-consumption hydrothermal process was applied to the synthesis of the chitosan-derived carbon–smectite nanocomposite with cobalt (H_Co/C-S). The produced nanocomposite was characterized using elemental analysis, ICP-OES, XRPD, low-temperature N2 adsorption–desorption isotherms, FTIR analysis, and point of zero charge. H_Co/C-S (SBET = 0.73 m2 g−1, d001 = 1.40 nm, pHPZC = 5.3) was evaluated as a ciprofloxacin adsorbent in aqueous solution. Experimental data were fitted with different kinetic models and interpreted by selected adsorption isotherms. The pseudo-second-order model was found to be the most appropriate, while ciprofloxacin adsorption onto H_Co/C-S was best described by the Redlich–Peterson isotherm (R2 = 0.985). The maximum adsorption capacity of H_Co/C-S, according to the Langmuir isotherm (R2 = 0.977), was 72.3 mg g−1. Desorption and thermodynamic studies were performed. The obtained results indicated that the new hierarchically designed H_Co/C-S has promising potential to be further tested for application in real wastewater treatment.",
publisher = "MDPI",
journal = "Water",
title = "Ciprofloxacin Adsorption onto a Smectite–Chitosan-Derived Nanocomposite Obtained by Hydrothermal Synthesis",
volume = "15",
number = "14",
pages = "2608",
doi = "10.3390/w15142608"
}

Ajduković, M., Stevanović, G., Marinović, S., Mojović, Z., Banković, P., Radulović, K.,& Jović-Jovičić, N.. (2023). Ciprofloxacin Adsorption onto a Smectite–Chitosan-Derived Nanocomposite Obtained by Hydrothermal Synthesis. in Water
MDPI., 15(14), 2608.
https://doi.org/10.3390/w15142608

Ajduković M, Stevanović G, Marinović S, Mojović Z, Banković P, Radulović K, Jović-Jovičić N. Ciprofloxacin Adsorption onto a Smectite–Chitosan-Derived Nanocomposite Obtained by Hydrothermal Synthesis. in Water. 2023;15(14):2608.
doi:10.3390/w15142608 .

Ajduković, Marija, Stevanović, Gordana, Marinović, Sanja, Mojović, Zorica, Banković, Predrag, Radulović, Katarina, Jović-Jovičić, Nataša, "Ciprofloxacin Adsorption onto a Smectite–Chitosan-Derived Nanocomposite Obtained by Hydrothermal Synthesis" in Water, 15, no. 14 (2023):2608,
https://doi.org/10.3390/w15142608 . .

TY  - JOUR
AU  - Novaković, Tatjana
AU  - Pavlović, Stefan
AU  - Pagnacco, Maja
AU  - Banković, Predrag
AU  - Mojović, Zorica
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5303
AB  - A novel and simple electrochemical sensor for the determination of gallic acid is presented. The alumina sample was characterized by X-ray diffraction, FTIR, and particle size distribution analysis. The carbon paste electrode was modified with alumina and used as a sensor. The performances of the sensor were assessed by cyclic voltammetry and square-wave voltammetry techniques. The oxidation of gallic acid on alumina-modified carbon paste electrode was an irreversible diffusion-controlled process. The linear relationship of peak current and concentration was obtained for the concentration range of 1.4 to 115 µM with the limit of detection of 0.8 µM. The sensor’s ability to test gallic aid in real systems was successfully tested in wine samples.
PB  - Springer
T2  - Electrocatalysis
T1  - The Application of Alumina for Electroanalytical Determination of Gallic Acid
VL  - 14
SP  - 18
EP  - 28
DO  - 10.1007/s12678-022-00770-2
ER  - 

@article{
author = "Novaković, Tatjana and Pavlović, Stefan and Pagnacco, Maja and Banković, Predrag and Mojović, Zorica",
year = "2023",
abstract = "A novel and simple electrochemical sensor for the determination of gallic acid is presented. The alumina sample was characterized by X-ray diffraction, FTIR, and particle size distribution analysis. The carbon paste electrode was modified with alumina and used as a sensor. The performances of the sensor were assessed by cyclic voltammetry and square-wave voltammetry techniques. The oxidation of gallic acid on alumina-modified carbon paste electrode was an irreversible diffusion-controlled process. The linear relationship of peak current and concentration was obtained for the concentration range of 1.4 to 115 µM with the limit of detection of 0.8 µM. The sensor’s ability to test gallic aid in real systems was successfully tested in wine samples.",
publisher = "Springer",
journal = "Electrocatalysis",
title = "The Application of Alumina for Electroanalytical Determination of Gallic Acid",
volume = "14",
pages = "18-28",
doi = "10.1007/s12678-022-00770-2"
}

Novaković, T., Pavlović, S., Pagnacco, M., Banković, P.,& Mojović, Z.. (2023). The Application of Alumina for Electroanalytical Determination of Gallic Acid. in Electrocatalysis
Springer., 14, 18-28.
https://doi.org/10.1007/s12678-022-00770-2

Novaković T, Pavlović S, Pagnacco M, Banković P, Mojović Z. The Application of Alumina for Electroanalytical Determination of Gallic Acid. in Electrocatalysis. 2023;14:18-28.
doi:10.1007/s12678-022-00770-2 .

Novaković, Tatjana, Pavlović, Stefan, Pagnacco, Maja, Banković, Predrag, Mojović, Zorica, "The Application of Alumina for Electroanalytical Determination of Gallic Acid" in Electrocatalysis, 14 (2023):18-28,
https://doi.org/10.1007/s12678-022-00770-2 . .

TY  - CONF
AU  - Pagnacco, Maja
AU  - Maksimović, Jelena
AU  - Mudrinić, Tihana
AU  - Ajduković, Marija
AU  - Banković, Predrag
AU  - Milutinović Nikolić, Aleksandra
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6727
AB  - The oscillatory Briggs-Rauscher (BR) reaction was applied on solid insoluble materials -
bentonite clays from different deposits: Wyoming (Swy-2), Texas (STx-1b), Idaho (SbId-1), 
Arizona (SAz-2), Bogovina and Mečji Do, last two from Serbia. Under the same BR 
experimental conditions, the addition of identical masses (0.25 g) of particular clay resulted in 
different effects on oscillatory dynamics. There is a prolongation, quenching, or no influence 
on oscillatory dynamics. Additionally, in the case of different masses of clay added, the 
response of the BR oscillating system resulted in a complex behavior pattern (oscillatory 
period vs. bentonite mass). This complex behavior pattern (firstly obtained by using clays in 
BR), could be applied as a fingerprint for bentonite identification. It is supported by facts that 
montmorillonite/beidellite ratio, cation exchange capacity, principal exchange cation, the 
extent of iron leaching in the acidic environment of BR reaction, and specific surface area of 
each used clays were not exclusively responsible for observed behavior in oscillatory 
reaction. This means that all bentonite’s properties combined are probably responsible for 
behavior obtained in oscillatory reaction, making BR reaction as an easily available and 
economical method for the identification of bentonite clay origin
PB  - Serbian Ceramic Society
C3  - Program and the book of abstracts - Serbian Ceramic Society Conference – Advanced Ceramics and Application X, "New Frontiers in Multifunctional Material Science and Processing", 26-27. September 2022, Belgrade, Serbia
T1  - The Briggs-Rauscher oscillatory reaction method as a “fingerprint” for bentonite clays
SP  - 46
EP  - 46
UR  - https://hdl.handle.net/21.15107/rcub_cer_6727
ER  - 

@conference{
author = "Pagnacco, Maja and Maksimović, Jelena and Mudrinić, Tihana and Ajduković, Marija and Banković, Predrag and Milutinović Nikolić, Aleksandra",
year = "2022",
abstract = "The oscillatory Briggs-Rauscher (BR) reaction was applied on solid insoluble materials -
bentonite clays from different deposits: Wyoming (Swy-2), Texas (STx-1b), Idaho (SbId-1), 
Arizona (SAz-2), Bogovina and Mečji Do, last two from Serbia. Under the same BR 
experimental conditions, the addition of identical masses (0.25 g) of particular clay resulted in 
different effects on oscillatory dynamics. There is a prolongation, quenching, or no influence 
on oscillatory dynamics. Additionally, in the case of different masses of clay added, the 
response of the BR oscillating system resulted in a complex behavior pattern (oscillatory 
period vs. bentonite mass). This complex behavior pattern (firstly obtained by using clays in 
BR), could be applied as a fingerprint for bentonite identification. It is supported by facts that 
montmorillonite/beidellite ratio, cation exchange capacity, principal exchange cation, the 
extent of iron leaching in the acidic environment of BR reaction, and specific surface area of 
each used clays were not exclusively responsible for observed behavior in oscillatory 
reaction. This means that all bentonite’s properties combined are probably responsible for 
behavior obtained in oscillatory reaction, making BR reaction as an easily available and 
economical method for the identification of bentonite clay origin",
publisher = "Serbian Ceramic Society",
journal = "Program and the book of abstracts - Serbian Ceramic Society Conference – Advanced Ceramics and Application X, "New Frontiers in Multifunctional Material Science and Processing", 26-27. September 2022, Belgrade, Serbia",
title = "The Briggs-Rauscher oscillatory reaction method as a “fingerprint” for bentonite clays",
pages = "46-46",
url = "https://hdl.handle.net/21.15107/rcub_cer_6727"
}

Pagnacco, M., Maksimović, J., Mudrinić, T., Ajduković, M., Banković, P.,& Milutinović Nikolić, A.. (2022). The Briggs-Rauscher oscillatory reaction method as a “fingerprint” for bentonite clays. in Program and the book of abstracts - Serbian Ceramic Society Conference – Advanced Ceramics and Application X, "New Frontiers in Multifunctional Material Science and Processing", 26-27. September 2022, Belgrade, Serbia
Serbian Ceramic Society., 46-46.
https://hdl.handle.net/21.15107/rcub_cer_6727

Pagnacco M, Maksimović J, Mudrinić T, Ajduković M, Banković P, Milutinović Nikolić A. The Briggs-Rauscher oscillatory reaction method as a “fingerprint” for bentonite clays. in Program and the book of abstracts - Serbian Ceramic Society Conference – Advanced Ceramics and Application X, "New Frontiers in Multifunctional Material Science and Processing", 26-27. September 2022, Belgrade, Serbia. 2022;:46-46.
https://hdl.handle.net/21.15107/rcub_cer_6727 .

Pagnacco, Maja, Maksimović, Jelena, Mudrinić, Tihana, Ajduković, Marija, Banković, Predrag, Milutinović Nikolić, Aleksandra, "The Briggs-Rauscher oscillatory reaction method as a “fingerprint” for bentonite clays" in Program and the book of abstracts - Serbian Ceramic Society Conference – Advanced Ceramics and Application X, "New Frontiers in Multifunctional Material Science and Processing", 26-27. September 2022, Belgrade, Serbia (2022):46-46,
https://hdl.handle.net/21.15107/rcub_cer_6727 .

TY  - JOUR
AU  - Mudrinić, Tihana
AU  - Petrović, Srđan
AU  - Krstić, Jugoslav
AU  - Milovanović, Biljana
AU  - Pavlović, Stefan
AU  - Banković, Predrag
AU  - Milutinović Nikolić, Aleksandra
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5308
AB  - The main goals of this study are: i) employ the electrochemical methods as alternative methods for alumina-supported cobalt (Co-A) surface characterization; ii) investigate the electro-catalytic activity of different cobalt phases toward glucose, and iii) implement the mechanochemical approach for the synthesis of the fourth generation of glucose sensing materials. Co3O4 and alumina were either manual grinded (Co3O4-A) or ball-milled (CoAl2O4-A) with different amounts of cobalt in CoAl2O4-A. The final products were characterized by XRF, LDPSA, XRD and TPR. The electrodes were prepared in the form of the carbon paste electrode and tested in supporting electrolyte (1 M NaOH) as well as in a glucose-containing solution. The CV, EIS, and chronoamperometry were used for electrochemical measurements. TPR revealed the formation of CoAl2O4 during the ball milling process. Different cobalt phases significantly affected the electrochemical responses. Higher activity of CoAl2O4-A toward glucose oxidation in comparison with Co3O4-A was ascribed to tetrahedral Co2+ ion acting as the active site in glucose oxidation. In addition, results convinced employing the scarcely employed mechanochemical synthesis protocols for obtaining glucose-sensing materials. Finally, it was proven that electrochemical techniques can be harnessed as alternative, new, powerful methods for Co-A surface characterization.
PB  - Elsevier
T2  - Surfaces and Interfaces
T1  - Electrochemical approach to the surface characterization of mechanochemically synthesized alumina-supported cobalt applicable in glucose sensing
IS  - 102356
DO  - 10.1016/j.surfin.2022.102356
ER  - 

@article{
author = "Mudrinić, Tihana and Petrović, Srđan and Krstić, Jugoslav and Milovanović, Biljana and Pavlović, Stefan and Banković, Predrag and Milutinović Nikolić, Aleksandra",
year = "2022",
abstract = "The main goals of this study are: i) employ the electrochemical methods as alternative methods for alumina-supported cobalt (Co-A) surface characterization; ii) investigate the electro-catalytic activity of different cobalt phases toward glucose, and iii) implement the mechanochemical approach for the synthesis of the fourth generation of glucose sensing materials. Co3O4 and alumina were either manual grinded (Co3O4-A) or ball-milled (CoAl2O4-A) with different amounts of cobalt in CoAl2O4-A. The final products were characterized by XRF, LDPSA, XRD and TPR. The electrodes were prepared in the form of the carbon paste electrode and tested in supporting electrolyte (1 M NaOH) as well as in a glucose-containing solution. The CV, EIS, and chronoamperometry were used for electrochemical measurements. TPR revealed the formation of CoAl2O4 during the ball milling process. Different cobalt phases significantly affected the electrochemical responses. Higher activity of CoAl2O4-A toward glucose oxidation in comparison with Co3O4-A was ascribed to tetrahedral Co2+ ion acting as the active site in glucose oxidation. In addition, results convinced employing the scarcely employed mechanochemical synthesis protocols for obtaining glucose-sensing materials. Finally, it was proven that electrochemical techniques can be harnessed as alternative, new, powerful methods for Co-A surface characterization.",
publisher = "Elsevier",
journal = "Surfaces and Interfaces",
title = "Electrochemical approach to the surface characterization of mechanochemically synthesized alumina-supported cobalt applicable in glucose sensing",
number = "102356",
doi = "10.1016/j.surfin.2022.102356"
}

Mudrinić, T., Petrović, S., Krstić, J., Milovanović, B., Pavlović, S., Banković, P.,& Milutinović Nikolić, A.. (2022). Electrochemical approach to the surface characterization of mechanochemically synthesized alumina-supported cobalt applicable in glucose sensing. in Surfaces and Interfaces
Elsevier.(102356).
https://doi.org/10.1016/j.surfin.2022.102356

Mudrinić T, Petrović S, Krstić J, Milovanović B, Pavlović S, Banković P, Milutinović Nikolić A. Electrochemical approach to the surface characterization of mechanochemically synthesized alumina-supported cobalt applicable in glucose sensing. in Surfaces and Interfaces. 2022;(102356).
doi:10.1016/j.surfin.2022.102356 .

Mudrinić, Tihana, Petrović, Srđan, Krstić, Jugoslav, Milovanović, Biljana, Pavlović, Stefan, Banković, Predrag, Milutinović Nikolić, Aleksandra, "Electrochemical approach to the surface characterization of mechanochemically synthesized alumina-supported cobalt applicable in glucose sensing" in Surfaces and Interfaces, no. 102356 (2022),
https://doi.org/10.1016/j.surfin.2022.102356 . .

TY  - JOUR
AU  - Stevanović, Gordana
AU  - Jović-Jovičić, Nataša
AU  - Krstić, Jugoslav
AU  - Milutinović Nikolić, Aleksandra
AU  - Banković, Predrag
AU  - Popović, Aleksandar
AU  - Ajduković, Marija
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5437
AB  - Chitosan (Ch)-derived from biowaste along with smectite, an abundant clay mineral, were used in a low-cost and eco-friendly synthesis of a new type of catalyst. Nanocomposite catalysts constituted of Co supported on smectite with chitosan-derived carbon loading were obtained using an impregnation carbonization procedure and denoted as Co/cCh-S-T (T stands for applied carbonization temperature). The carbonization was performed in the temperature range from 400 °C to 700 °C in the flow of N2 providing inert atmosphere. The temperature of 500 °C was found to be the most suitable for catalyst synthesis regarding catalytic performance in a peroxymonosulfate activated degradation of tartrazine. The incorporation of carbonized chitosan structure within the interlamellar space of the smectite was confirmed using X-ray powder diffraction. The high-resolution transmission electron microscopy confirmed a layered structure of nanocomposites characteristic for smectite, as well as the presence of small spherical cobalt containing nanoformations (confirmed by energy dispersive X-ray spectroscopy) well dispersed within structure. The existance of cobalt in the CoII and CoIII oxidation state was proven by X-ray photoelectron spectroscopy. The Co/cCh-S-500 catalyst was proven to be stable and efficient after 5 consecutive cycles. This work showed that nanocomposite Co-catalysts, based on smectite and biowaste-derived carbon, as peroxymonosulfate activators exhibited a very promising performance in the degradation of water pollutants.
PB  - Elsevier
T2  - Applied  Clay Sciences
T1  - Nanocomposite co-catalysts, based on smectite and biowaste-derived carbon, as peroxymonosulfate activators in degradation of tartrazine
VL  - 230
SP  - 106718
DO  - 10.1016/j.clay.2022.106718
ER  - 

@article{
author = "Stevanović, Gordana and Jović-Jovičić, Nataša and Krstić, Jugoslav and Milutinović Nikolić, Aleksandra and Banković, Predrag and Popović, Aleksandar and Ajduković, Marija",
year = "2022",
abstract = "Chitosan (Ch)-derived from biowaste along with smectite, an abundant clay mineral, were used in a low-cost and eco-friendly synthesis of a new type of catalyst. Nanocomposite catalysts constituted of Co supported on smectite with chitosan-derived carbon loading were obtained using an impregnation carbonization procedure and denoted as Co/cCh-S-T (T stands for applied carbonization temperature). The carbonization was performed in the temperature range from 400 °C to 700 °C in the flow of N2 providing inert atmosphere. The temperature of 500 °C was found to be the most suitable for catalyst synthesis regarding catalytic performance in a peroxymonosulfate activated degradation of tartrazine. The incorporation of carbonized chitosan structure within the interlamellar space of the smectite was confirmed using X-ray powder diffraction. The high-resolution transmission electron microscopy confirmed a layered structure of nanocomposites characteristic for smectite, as well as the presence of small spherical cobalt containing nanoformations (confirmed by energy dispersive X-ray spectroscopy) well dispersed within structure. The existance of cobalt in the CoII and CoIII oxidation state was proven by X-ray photoelectron spectroscopy. The Co/cCh-S-500 catalyst was proven to be stable and efficient after 5 consecutive cycles. This work showed that nanocomposite Co-catalysts, based on smectite and biowaste-derived carbon, as peroxymonosulfate activators exhibited a very promising performance in the degradation of water pollutants.",
publisher = "Elsevier",
journal = "Applied  Clay Sciences",
title = "Nanocomposite co-catalysts, based on smectite and biowaste-derived carbon, as peroxymonosulfate activators in degradation of tartrazine",
volume = "230",
pages = "106718",
doi = "10.1016/j.clay.2022.106718"
}

Stevanović, G., Jović-Jovičić, N., Krstić, J., Milutinović Nikolić, A., Banković, P., Popović, A.,& Ajduković, M.. (2022). Nanocomposite co-catalysts, based on smectite and biowaste-derived carbon, as peroxymonosulfate activators in degradation of tartrazine. in Applied  Clay Sciences
Elsevier., 230, 106718.
https://doi.org/10.1016/j.clay.2022.106718

Stevanović G, Jović-Jovičić N, Krstić J, Milutinović Nikolić A, Banković P, Popović A, Ajduković M. Nanocomposite co-catalysts, based on smectite and biowaste-derived carbon, as peroxymonosulfate activators in degradation of tartrazine. in Applied  Clay Sciences. 2022;230:106718.
doi:10.1016/j.clay.2022.106718 .

Stevanović, Gordana, Jović-Jovičić, Nataša, Krstić, Jugoslav, Milutinović Nikolić, Aleksandra, Banković, Predrag, Popović, Aleksandar, Ajduković, Marija, "Nanocomposite co-catalysts, based on smectite and biowaste-derived carbon, as peroxymonosulfate activators in degradation of tartrazine" in Applied  Clay Sciences, 230 (2022):106718,
https://doi.org/10.1016/j.clay.2022.106718 . .

TY  - JOUR
AU  - Mudrinić, Tihana
AU  - Petrović, Srđan
AU  - Krstić, Jugoslav
AU  - Milovanović, Biljana
AU  - Pavlović, Stefan
AU  - Banković, Predrag
AU  - Milutinović Nikolić, Aleksandra
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5616
AB  - The main goals of this study are: i) employ the electrochemical methods as alternative methods for alumina-supported cobalt (Co-A) surface characterization; ii) investigate the electro-catalytic activity of different cobalt phases toward glucose, and iii) implement the mechanochemical approach for the synthesis of the fourth generation of glucose sensing materials. Co3O4 and alumina were either manual grinded (Co3O4-A) or ball-milled (CoAl2O4-A) with different amounts of cobalt in CoAl2O4-A. The final products were characterized by XRF, LDPSA, XRD and TPR. The electrodes were prepared in the form of the carbon paste electrode and tested in supporting electrolyte (1 M NaOH) as well as in a glucose-containing solution. The CV, EIS, and chronoamperometry were used for electrochemical measurements. TPR revealed the formation of CoAl2O4 during the ball milling process. Different cobalt phases significantly affected the electrochemical responses. Higher activity of CoAl2O4-A toward glucose oxidation in comparison with Co3O4-A was ascribed to tetrahedral Co2+ ion acting as the active site in glucose oxidation. In addition, results convinced employing the scarcely employed mechanochemical synthesis protocols for obtaining glucose-sensing materials. Finally, it was proven that electrochemical techniques can be harnessed as alternative, new, powerful methods for Co-A surface characterization.
PB  - Elsevier
T2  - Surfaces and Interfaces
T1  - Electrochemical approach to the surface characterization of mechanochemically synthesized alumina-supported cobalt applicable in glucose sensing
IS  - 102356
DO  - 10.1016/j.surfin.2022.102356
ER  - 

@article{
author = "Mudrinić, Tihana and Petrović, Srđan and Krstić, Jugoslav and Milovanović, Biljana and Pavlović, Stefan and Banković, Predrag and Milutinović Nikolić, Aleksandra",
year = "2022",
abstract = "The main goals of this study are: i) employ the electrochemical methods as alternative methods for alumina-supported cobalt (Co-A) surface characterization; ii) investigate the electro-catalytic activity of different cobalt phases toward glucose, and iii) implement the mechanochemical approach for the synthesis of the fourth generation of glucose sensing materials. Co3O4 and alumina were either manual grinded (Co3O4-A) or ball-milled (CoAl2O4-A) with different amounts of cobalt in CoAl2O4-A. The final products were characterized by XRF, LDPSA, XRD and TPR. The electrodes were prepared in the form of the carbon paste electrode and tested in supporting electrolyte (1 M NaOH) as well as in a glucose-containing solution. The CV, EIS, and chronoamperometry were used for electrochemical measurements. TPR revealed the formation of CoAl2O4 during the ball milling process. Different cobalt phases significantly affected the electrochemical responses. Higher activity of CoAl2O4-A toward glucose oxidation in comparison with Co3O4-A was ascribed to tetrahedral Co2+ ion acting as the active site in glucose oxidation. In addition, results convinced employing the scarcely employed mechanochemical synthesis protocols for obtaining glucose-sensing materials. Finally, it was proven that electrochemical techniques can be harnessed as alternative, new, powerful methods for Co-A surface characterization.",
publisher = "Elsevier",
journal = "Surfaces and Interfaces",
title = "Electrochemical approach to the surface characterization of mechanochemically synthesized alumina-supported cobalt applicable in glucose sensing",
number = "102356",
doi = "10.1016/j.surfin.2022.102356"
}

Mudrinić, T., Petrović, S., Krstić, J., Milovanović, B., Pavlović, S., Banković, P.,& Milutinović Nikolić, A.. (2022). Electrochemical approach to the surface characterization of mechanochemically synthesized alumina-supported cobalt applicable in glucose sensing. in Surfaces and Interfaces
Elsevier.(102356).
https://doi.org/10.1016/j.surfin.2022.102356

Mudrinić T, Petrović S, Krstić J, Milovanović B, Pavlović S, Banković P, Milutinović Nikolić A. Electrochemical approach to the surface characterization of mechanochemically synthesized alumina-supported cobalt applicable in glucose sensing. in Surfaces and Interfaces. 2022;(102356).
doi:10.1016/j.surfin.2022.102356 .

Mudrinić, Tihana, Petrović, Srđan, Krstić, Jugoslav, Milovanović, Biljana, Pavlović, Stefan, Banković, Predrag, Milutinović Nikolić, Aleksandra, "Electrochemical approach to the surface characterization of mechanochemically synthesized alumina-supported cobalt applicable in glucose sensing" in Surfaces and Interfaces, no. 102356 (2022),
https://doi.org/10.1016/j.surfin.2022.102356 . .

TY  - CONF
AU  - Mudrinić, Tihana
AU  - Milovanović, Biljana
AU  - Marinović, Sanja
AU  - Petrović, Srđan
AU  - Krstić, Jugoslav
AU  - Banković, Predrag
AU  - Milutinović Nikolić, Aleksandra
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6359
AB  - In recent years, mineral oxides (i.e. zeolite, alumina and clay minerals)-supported non-precious transition metals have extensively studied as highly promising sustainable and green glucose-sensing materials (Mudrinić, 2019). The reason for that is their low cost, easiness of synthesis, low negative environmental impact, and desirable electrochemical properties toward glucose oxidation. 
It is widely accepted that the catalytic activity of the mineral oxides-supported cobalt is strongly influenced by cobalt-mineral oxide interaction. As a consequence of this interaction different cobalt oxides (Wang, 1991) could be formed: Co3O4-contains both cobalt ions in tetrahedral (Co2+Td) and octahedral (Co3+Oh) coordination and CoAl2O4-contains only Co2+Td. However, little is known about the catalytic activity of these cobalt oxides (i.e. cobalt ions) in the reaction of the electro-oxidation of glucose. 
In this work, cobalt oxides in both tetrahedral (Co2+Td) and octahedral (Co3+Oh) coordination and with only Co2+Td were synthesized on aluminum pillared clay (AP) and alumina (A). The obtained materials were characterized by X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and temperature-programmed reduction (TPR). Electrochemical measurements were performed in alkaline solution with and without glucose using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and chronoamperometry (CA). TPR and XPS along with the results of electrochemical measurements in alkaline solutions without glucose confirmed the successful synthesis of the different cobalt oxides on both AP and A. The electrochemical measurements in glucose-containing solutions showed the enhanced electrocatalytic activity of AP and A with Co2+Td in comparison to their counterparts with both Co2+Td and Co3+Oh.  This result suggested that the Co2+Td acted as the main active site for the glucose oxidation.
PB  - The clay mineral society
C3  - Scientific research abstracts - AIPEA - 17th International Clay Conference (ICC 2022), 25-29 July, Istanbul, Turkey
T1  - Electrocatalytic activity of different cobalt oxides supported on mineral oxides toward glucose oxidation
SP  - 331
EP  - 331
UR  - https://hdl.handle.net/21.15107/rcub_cer_6359
ER  - 

@conference{
author = "Mudrinić, Tihana and Milovanović, Biljana and Marinović, Sanja and Petrović, Srđan and Krstić, Jugoslav and Banković, Predrag and Milutinović Nikolić, Aleksandra",
year = "2022",
abstract = "In recent years, mineral oxides (i.e. zeolite, alumina and clay minerals)-supported non-precious transition metals have extensively studied as highly promising sustainable and green glucose-sensing materials (Mudrinić, 2019). The reason for that is their low cost, easiness of synthesis, low negative environmental impact, and desirable electrochemical properties toward glucose oxidation. 
It is widely accepted that the catalytic activity of the mineral oxides-supported cobalt is strongly influenced by cobalt-mineral oxide interaction. As a consequence of this interaction different cobalt oxides (Wang, 1991) could be formed: Co3O4-contains both cobalt ions in tetrahedral (Co2+Td) and octahedral (Co3+Oh) coordination and CoAl2O4-contains only Co2+Td. However, little is known about the catalytic activity of these cobalt oxides (i.e. cobalt ions) in the reaction of the electro-oxidation of glucose. 
In this work, cobalt oxides in both tetrahedral (Co2+Td) and octahedral (Co3+Oh) coordination and with only Co2+Td were synthesized on aluminum pillared clay (AP) and alumina (A). The obtained materials were characterized by X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and temperature-programmed reduction (TPR). Electrochemical measurements were performed in alkaline solution with and without glucose using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and chronoamperometry (CA). TPR and XPS along with the results of electrochemical measurements in alkaline solutions without glucose confirmed the successful synthesis of the different cobalt oxides on both AP and A. The electrochemical measurements in glucose-containing solutions showed the enhanced electrocatalytic activity of AP and A with Co2+Td in comparison to their counterparts with both Co2+Td and Co3+Oh.  This result suggested that the Co2+Td acted as the main active site for the glucose oxidation.",
publisher = "The clay mineral society",
journal = "Scientific research abstracts - AIPEA - 17th International Clay Conference (ICC 2022), 25-29 July, Istanbul, Turkey",
title = "Electrocatalytic activity of different cobalt oxides supported on mineral oxides toward glucose oxidation",
pages = "331-331",
url = "https://hdl.handle.net/21.15107/rcub_cer_6359"
}

Mudrinić, T., Milovanović, B., Marinović, S., Petrović, S., Krstić, J., Banković, P.,& Milutinović Nikolić, A.. (2022). Electrocatalytic activity of different cobalt oxides supported on mineral oxides toward glucose oxidation. in Scientific research abstracts - AIPEA - 17th International Clay Conference (ICC 2022), 25-29 July, Istanbul, Turkey
The clay mineral society., 331-331.
https://hdl.handle.net/21.15107/rcub_cer_6359

Mudrinić T, Milovanović B, Marinović S, Petrović S, Krstić J, Banković P, Milutinović Nikolić A. Electrocatalytic activity of different cobalt oxides supported on mineral oxides toward glucose oxidation. in Scientific research abstracts - AIPEA - 17th International Clay Conference (ICC 2022), 25-29 July, Istanbul, Turkey. 2022;:331-331.
https://hdl.handle.net/21.15107/rcub_cer_6359 .

Mudrinić, Tihana, Milovanović, Biljana, Marinović, Sanja, Petrović, Srđan, Krstić, Jugoslav, Banković, Predrag, Milutinović Nikolić, Aleksandra, "Electrocatalytic activity of different cobalt oxides supported on mineral oxides toward glucose oxidation" in Scientific research abstracts - AIPEA - 17th International Clay Conference (ICC 2022), 25-29 July, Istanbul, Turkey (2022):331-331,
https://hdl.handle.net/21.15107/rcub_cer_6359 .

TY  - JOUR
AU  - Jović-Jovičić, Nataša
AU  - Bajuk Bogdanović, Danica
AU  - Novaković, Tatjana
AU  - Banković, Predrag
AU  - Milutinović Nikolić, Aleksandra
AU  - Mojović, Zorica
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5791
AB  - Organomodified bentonites were obtained by modification of bentonite clay from local mine Bogovina, with four different alkylammonium ions in the amounts that correspond to cation exchange capacity. Carbonized bentonites, obtained by pyrolyzing the organomodified bentonites in the flow of nitrogen, were characterized using XRD, low-temperature N2 physisorption and Raman spectroscopy. Structural and textural properties of carbonized bentonites depended on the arrangement of alkylammonium cations in the paternal organomodified bentonite, while the Raman spectroscopy confirmed the presence of amorphous carbon. The obtained carbonized bentonites were used for modification of the carbon paste electrode. The modified electrodes were investigated using cyclic voltammetry and electrochemical impedance spectroscopy. The electrosorption of chloride and sulfate anions on carbonized bentonites was studied by chronocoulometry. The results were interpreted in the terms of surface groups and textural properties of the carbonized bentonites.
AB  - Органомодификовани бентонити су добијени модификацијом бентонита из локалног рудника Боговина са четири различита алкиламонијум јона у количини која је једнака његовом капацитету јонске измене. Карбонизовани бентонити, добијени пиролизом органомодификованих бентонита у струји азота, окарактерисани су помоћу дифракције Х-зрачења (XRD), нискотемпературском физисорпцијом азота и Раманском спектроскопијом. Структурна и текстурална својства карбонизованих бентонита зависe од уређења алкиламонијум катјона у одговарајућем полазном органомодификованом бентониту. Резултати карактеризације су показали да особине узорака зависе од распореда алкил- амонијум катјона у органомодификованом бентониту од ког су настали, док је Раманска спектроскопија потврдила присуство аморфног угљеника. Добијени карбонизовани бентонити су коришћени за модификацију електроде од пасте угљеника. Модификоване електроде су испитане помоћу цикличне волтаметрије и електрохемијске импедансне спектроскопије. Електросорпција хлорида и сулфата је проучавана помоћу хронокуло- нометрије. Резултати су протумачени на основу присутних површинских група и текстуралних својстава карбонизованих бентонита.
PB  - Serbian Chemical Society
T2  - Journal of the Serbian Chemical Society
T1  - Electrochemical properties of carbonized bentonite
T1  - Elektrohemijska svojstva karbonizovanih bentonita
VL  - 88
IS  - 1
SP  - 41
EP  - 54
DO  - 10.2298/JSC220127030J
ER  - 

@article{
author = "Jović-Jovičić, Nataša and Bajuk Bogdanović, Danica and Novaković, Tatjana and Banković, Predrag and Milutinović Nikolić, Aleksandra and Mojović, Zorica",
year = "2022",
abstract = "Organomodified bentonites were obtained by modification of bentonite clay from local mine Bogovina, with four different alkylammonium ions in the amounts that correspond to cation exchange capacity. Carbonized bentonites, obtained by pyrolyzing the organomodified bentonites in the flow of nitrogen, were characterized using XRD, low-temperature N2 physisorption and Raman spectroscopy. Structural and textural properties of carbonized bentonites depended on the arrangement of alkylammonium cations in the paternal organomodified bentonite, while the Raman spectroscopy confirmed the presence of amorphous carbon. The obtained carbonized bentonites were used for modification of the carbon paste electrode. The modified electrodes were investigated using cyclic voltammetry and electrochemical impedance spectroscopy. The electrosorption of chloride and sulfate anions on carbonized bentonites was studied by chronocoulometry. The results were interpreted in the terms of surface groups and textural properties of the carbonized bentonites., Органомодификовани бентонити су добијени модификацијом бентонита из локалног рудника Боговина са четири различита алкиламонијум јона у количини која је једнака његовом капацитету јонске измене. Карбонизовани бентонити, добијени пиролизом органомодификованих бентонита у струји азота, окарактерисани су помоћу дифракције Х-зрачења (XRD), нискотемпературском физисорпцијом азота и Раманском спектроскопијом. Структурна и текстурална својства карбонизованих бентонита зависe од уређења алкиламонијум катјона у одговарајућем полазном органомодификованом бентониту. Резултати карактеризације су показали да особине узорака зависе од распореда алкил- амонијум катјона у органомодификованом бентониту од ког су настали, док је Раманска спектроскопија потврдила присуство аморфног угљеника. Добијени карбонизовани бентонити су коришћени за модификацију електроде од пасте угљеника. Модификоване електроде су испитане помоћу цикличне волтаметрије и електрохемијске импедансне спектроскопије. Електросорпција хлорида и сулфата је проучавана помоћу хронокуло- нометрије. Резултати су протумачени на основу присутних површинских група и текстуралних својстава карбонизованих бентонита.",
publisher = "Serbian Chemical Society",
journal = "Journal of the Serbian Chemical Society",
title = "Electrochemical properties of carbonized bentonite, Elektrohemijska svojstva karbonizovanih bentonita",
volume = "88",
number = "1",
pages = "41-54",
doi = "10.2298/JSC220127030J"
}

Jović-Jovičić, N., Bajuk Bogdanović, D., Novaković, T., Banković, P., Milutinović Nikolić, A.,& Mojović, Z.. (2022). Electrochemical properties of carbonized bentonite. in Journal of the Serbian Chemical Society
Serbian Chemical Society., 88(1), 41-54.
https://doi.org/10.2298/JSC220127030J

Jović-Jovičić N, Bajuk Bogdanović D, Novaković T, Banković P, Milutinović Nikolić A, Mojović Z. Electrochemical properties of carbonized bentonite. in Journal of the Serbian Chemical Society. 2022;88(1):41-54.
doi:10.2298/JSC220127030J .

Jović-Jovičić, Nataša, Bajuk Bogdanović, Danica, Novaković, Tatjana, Banković, Predrag, Milutinović Nikolić, Aleksandra, Mojović, Zorica, "Electrochemical properties of carbonized bentonite" in Journal of the Serbian Chemical Society, 88, no. 1 (2022):41-54,
https://doi.org/10.2298/JSC220127030J . .

TY  - CONF
AU  - Milovanović, Biljana
AU  - Petrović, Rada
AU  - Marinović, Sanja
AU  - Milutinović Nikolić, Aleksandra
AU  - Banković, Predrag
AU  - Mudrinić, Tihana
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6360
AB  - Aluminum pillared montmorillonite-supported cobalt (Co/AP) has proven to be a suitable non-enzymatic
sensing material (Mudrinić, 2019). Beside low cost, Co/AP exhibited adequate electrocatalytic performance
toward glucose. However, further improvements of electrocatalytic performances are needed, especially
regarding increasing sensitivity and widening the linear range of glucose detection.
In this regard, in addition to the monometallic cobalt oxide catalyst, a series of bimetallic catalysts
supported on AP (Co+Cu/AP, Co+Zn/AP, Co+Fe/AP, and Co+Ni/AP) have been synthesized by the
incipient wetness impregnation method (Pinna, 1998). The total amount of supported metal was fixed at 4
mass%, while cobalt:dopant molar ratio was 9:1 for all samples. The synthesized materials were prepared
in the form of carbon paste electrode (Co+dopant/AP-CPE) with the same mass ratio of Co+dopant/AP to
carbon black (CB) and applied as a working electrode.
All the electrochemical measurements of each Co+dopant/AP-CPE were conducted using an Autolab
PGSTAT302N potentiostat with Nova 2.1 software. The experiments were carried out in a three-electrode
cell with prepared electrodes as working, Ag/AgCl (3 M KCl) as a reference electrode, and platinum rod
as a counter electrode. Electrochemical behavior of the working electrodes for glucose detection was
studied by the cyclic voltammetry and chronoamperometry in alkaline solution, with and without glucose.
Among investigated electrodes for glucose electrooxidation, the Co+Fe/AP-CPE exhibited the highest
current response with the best sensitivity. These very first results indicated a vital role of Fe in enhancing
the glucose-sensing performance of aluminum pillared montmorillonite-supported cobalt. The physical
chemical characterization of all Co+dopant/AP materials is ongoing.
PB  - The clay mineral society
C3  - Scientific research abstracts - AIPEA - 17th International Clay Conference (ICC 2022), 25-29 July, Istanbul, Turkey
T1  - Electrocatalytic behavior of pillared montmorillonite-supported cobalt oxide doped with Cu, Zn, Fe, and Ni for glucose sensing
SP  - 330
EP  - 330
UR  - https://hdl.handle.net/21.15107/rcub_cer_6360
ER  - 

@conference{
author = "Milovanović, Biljana and Petrović, Rada and Marinović, Sanja and Milutinović Nikolić, Aleksandra and Banković, Predrag and Mudrinić, Tihana",
year = "2022",
abstract = "Aluminum pillared montmorillonite-supported cobalt (Co/AP) has proven to be a suitable non-enzymatic
sensing material (Mudrinić, 2019). Beside low cost, Co/AP exhibited adequate electrocatalytic performance
toward glucose. However, further improvements of electrocatalytic performances are needed, especially
regarding increasing sensitivity and widening the linear range of glucose detection.
In this regard, in addition to the monometallic cobalt oxide catalyst, a series of bimetallic catalysts
supported on AP (Co+Cu/AP, Co+Zn/AP, Co+Fe/AP, and Co+Ni/AP) have been synthesized by the
incipient wetness impregnation method (Pinna, 1998). The total amount of supported metal was fixed at 4
mass%, while cobalt:dopant molar ratio was 9:1 for all samples. The synthesized materials were prepared
in the form of carbon paste electrode (Co+dopant/AP-CPE) with the same mass ratio of Co+dopant/AP to
carbon black (CB) and applied as a working electrode.
All the electrochemical measurements of each Co+dopant/AP-CPE were conducted using an Autolab
PGSTAT302N potentiostat with Nova 2.1 software. The experiments were carried out in a three-electrode
cell with prepared electrodes as working, Ag/AgCl (3 M KCl) as a reference electrode, and platinum rod
as a counter electrode. Electrochemical behavior of the working electrodes for glucose detection was
studied by the cyclic voltammetry and chronoamperometry in alkaline solution, with and without glucose.
Among investigated electrodes for glucose electrooxidation, the Co+Fe/AP-CPE exhibited the highest
current response with the best sensitivity. These very first results indicated a vital role of Fe in enhancing
the glucose-sensing performance of aluminum pillared montmorillonite-supported cobalt. The physical
chemical characterization of all Co+dopant/AP materials is ongoing.",
publisher = "The clay mineral society",
journal = "Scientific research abstracts - AIPEA - 17th International Clay Conference (ICC 2022), 25-29 July, Istanbul, Turkey",
title = "Electrocatalytic behavior of pillared montmorillonite-supported cobalt oxide doped with Cu, Zn, Fe, and Ni for glucose sensing",
pages = "330-330",
url = "https://hdl.handle.net/21.15107/rcub_cer_6360"
}

Milovanović, B., Petrović, R., Marinović, S., Milutinović Nikolić, A., Banković, P.,& Mudrinić, T.. (2022). Electrocatalytic behavior of pillared montmorillonite-supported cobalt oxide doped with Cu, Zn, Fe, and Ni for glucose sensing. in Scientific research abstracts - AIPEA - 17th International Clay Conference (ICC 2022), 25-29 July, Istanbul, Turkey
The clay mineral society., 330-330.
https://hdl.handle.net/21.15107/rcub_cer_6360

Milovanović B, Petrović R, Marinović S, Milutinović Nikolić A, Banković P, Mudrinić T. Electrocatalytic behavior of pillared montmorillonite-supported cobalt oxide doped with Cu, Zn, Fe, and Ni for glucose sensing. in Scientific research abstracts - AIPEA - 17th International Clay Conference (ICC 2022), 25-29 July, Istanbul, Turkey. 2022;:330-330.
https://hdl.handle.net/21.15107/rcub_cer_6360 .

Milovanović, Biljana, Petrović, Rada, Marinović, Sanja, Milutinović Nikolić, Aleksandra, Banković, Predrag, Mudrinić, Tihana, "Electrocatalytic behavior of pillared montmorillonite-supported cobalt oxide doped with Cu, Zn, Fe, and Ni for glucose sensing" in Scientific research abstracts - AIPEA - 17th International Clay Conference (ICC 2022), 25-29 July, Istanbul, Turkey (2022):330-330,
https://hdl.handle.net/21.15107/rcub_cer_6360 .