TY  - JOUR
AU  - Popadić, Daliborka
AU  - Krstić, Jugoslav
AU  - Janošević-Ležaić, Aleksandra
AU  - Popović, Maja
AU  - Milojević-Rakić, Maja
AU  - Ignjatović, Ljubiša
AU  - Bajuk-Bogdanović, Danica
AU  - Gavrilov, Nemanja
PY  - 2024
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7399
AB  - Reuse and/or recycling of spent adsorbents is taking a central role in modern thinking and catalyzed carbonization is the way forward. Herein we explore the carbonization of adsorbed acetamiprid, in an inert atmosphere, as a way of recycling and producing nitrogen-rich carbon material for potential use in supercapacitors. Added value material and the reuse of the adsorbent were achieved by carbonization at 700 °C under argon. The formation of a nitrogen-doped carbon layer as an active material on the adsorbent, bonded through a C-Si linkage, has been conclusively verified through elemental composition quantification using XPS and EDX measurements. Two-stage catalytic decomposition and condensation of the adsorbed pesticide is followed by TGA and TPD-MS. Attained carbon-based materials give stable Faradaic capacitance with a slight dependency on the number of adsorbing cycles. Capacitance calculated with respect to the adlayer carbon material reaches values as high as 610 F g−1. Galvanostatic Charge/Discharge measurement confirmed the stability of explored materials with a slight increase in capacitance over 1000 cycles. The presented results envisage electroactive materials preparation from environmental pollutants, adding value to spent adsorbents.
PB  - Elsevier
T2  - Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
T1  - Acetamiprid's degradation products and mechanism: Part II – Inert atmosphere and charge storage
VL  - 308
SP  - 123772
DO  - 10.1016/j.saa.2023.123772
ER  - 

@article{
author = "Popadić, Daliborka and Krstić, Jugoslav and Janošević-Ležaić, Aleksandra and Popović, Maja and Milojević-Rakić, Maja and Ignjatović, Ljubiša and Bajuk-Bogdanović, Danica and Gavrilov, Nemanja",
year = "2024",
abstract = "Reuse and/or recycling of spent adsorbents is taking a central role in modern thinking and catalyzed carbonization is the way forward. Herein we explore the carbonization of adsorbed acetamiprid, in an inert atmosphere, as a way of recycling and producing nitrogen-rich carbon material for potential use in supercapacitors. Added value material and the reuse of the adsorbent were achieved by carbonization at 700 °C under argon. The formation of a nitrogen-doped carbon layer as an active material on the adsorbent, bonded through a C-Si linkage, has been conclusively verified through elemental composition quantification using XPS and EDX measurements. Two-stage catalytic decomposition and condensation of the adsorbed pesticide is followed by TGA and TPD-MS. Attained carbon-based materials give stable Faradaic capacitance with a slight dependency on the number of adsorbing cycles. Capacitance calculated with respect to the adlayer carbon material reaches values as high as 610 F g−1. Galvanostatic Charge/Discharge measurement confirmed the stability of explored materials with a slight increase in capacitance over 1000 cycles. The presented results envisage electroactive materials preparation from environmental pollutants, adding value to spent adsorbents.",
publisher = "Elsevier",
journal = "Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy",
title = "Acetamiprid's degradation products and mechanism: Part II – Inert atmosphere and charge storage",
volume = "308",
pages = "123772",
doi = "10.1016/j.saa.2023.123772"
}

Popadić, D., Krstić, J., Janošević-Ležaić, A., Popović, M., Milojević-Rakić, M., Ignjatović, L., Bajuk-Bogdanović, D.,& Gavrilov, N.. (2024). Acetamiprid's degradation products and mechanism: Part II – Inert atmosphere and charge storage. in Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
Elsevier., 308, 123772.
https://doi.org/10.1016/j.saa.2023.123772

Popadić D, Krstić J, Janošević-Ležaić A, Popović M, Milojević-Rakić M, Ignjatović L, Bajuk-Bogdanović D, Gavrilov N. Acetamiprid's degradation products and mechanism: Part II – Inert atmosphere and charge storage. in Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy. 2024;308:123772.
doi:10.1016/j.saa.2023.123772 .

Popadić, Daliborka, Krstić, Jugoslav, Janošević-Ležaić, Aleksandra, Popović, Maja, Milojević-Rakić, Maja, Ignjatović, Ljubiša, Bajuk-Bogdanović, Danica, Gavrilov, Nemanja, "Acetamiprid's degradation products and mechanism: Part II – Inert atmosphere and charge storage" in Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy, 308 (2024):123772,
https://doi.org/10.1016/j.saa.2023.123772 . .

TY  - JOUR
AU  - Labus, Nebojsa
AU  - Krstić, Jugoslav
AU  - Matijašević, Srđan
AU  - Pavlović, Vladimir
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7187
AB  - Powder mixture consisted of ZnO, Mn2O3 (MnCO3) and Fe2O3 blended powders, was found laminating during compaction. Polyvinyl alcohol (PVA) and a combination of PVA with polyethylene glycol (PEG) added as a plasticizer, were introduced as polymer binders to improve the compaction of oxide mixtures. It has been done by forming a suspension of oxide mixture and varying the polymer solution concentration and composition. By evaporating the solvent, new materials were obtained, which consist of oxide particles bound via polymer. In such a manner obtained hybrid materials were characterized with attenuated total reflection Fourier transformed infrared (ATR-FTIR) spectroscopy, differential thermal analysis (DTA) and transmission electron microscopy (TEM). The oxide polymer material was compacted at 200 MPa and the expansion of this compact during heating was monitored in temperature range up to 550ºC with dilatometer. It was found that PVA forms graft polymer with PEG and specific interaction with oxide particles surface was revealed.
AB  - Смеша прахова састављена од ZnO, Mn2O3 (MnCO3) и Fe2O3 комбинацијепрахова је показивала ламинацију током пресовања. Поливинил алкохол (PVA) икомбинација PVA са полиетилен гликолом (PEG) који је додат као пластификатор, сууведени као полимерно везиво за пресовање оксидних прахова. Везиво је уведено такошто је формирана суспензија смеше различитих оксида прахова у полимерномраствору. Концентрације полимера и састави су варирани. Уклањањем растварачадобијени су нови материјали који се састоје од честица оксида повезаних полимерима.Ови хибридни материјали окарактерисани су методама ометене тоталне рефлексијефурије трансформисане инфрацрвене спектроскопије (ATR-FTIR) као идиференцијалне термичке анализе (DTA). Микроструктура је посматранатрансмисоном електронском микроскопијом (TEM). Оксид-полимер материјали супресовани на притиску од 200 MPa и ширење испреска током грејања је праћено у температурском опсегу од собне до 550ºC употребом дилатометра. Нађено је да PVAформира графт полимер са PEG и да постоји специфична интеракција полимера саповршином честица оксида.
PB  - Belgrade : Association for ETRAN Society
T2  - Science of Sintering
T1  - Oxide Powder Mixture with Poly-vinyl Alcohol (PVA) and added Polyethylene Glycol (PEG) as Plasticizer
VL  - 55
SP  - 189
EP  - 2023
DO  - 10.2298/SOS220828005L
ER  - 

@article{
author = "Labus, Nebojsa and Krstić, Jugoslav and Matijašević, Srđan and Pavlović, Vladimir",
year = "2023",
abstract = "Powder mixture consisted of ZnO, Mn2O3 (MnCO3) and Fe2O3 blended powders, was found laminating during compaction. Polyvinyl alcohol (PVA) and a combination of PVA with polyethylene glycol (PEG) added as a plasticizer, were introduced as polymer binders to improve the compaction of oxide mixtures. It has been done by forming a suspension of oxide mixture and varying the polymer solution concentration and composition. By evaporating the solvent, new materials were obtained, which consist of oxide particles bound via polymer. In such a manner obtained hybrid materials were characterized with attenuated total reflection Fourier transformed infrared (ATR-FTIR) spectroscopy, differential thermal analysis (DTA) and transmission electron microscopy (TEM). The oxide polymer material was compacted at 200 MPa and the expansion of this compact during heating was monitored in temperature range up to 550ºC with dilatometer. It was found that PVA forms graft polymer with PEG and specific interaction with oxide particles surface was revealed., Смеша прахова састављена од ZnO, Mn2O3 (MnCO3) и Fe2O3 комбинацијепрахова је показивала ламинацију током пресовања. Поливинил алкохол (PVA) икомбинација PVA са полиетилен гликолом (PEG) који је додат као пластификатор, сууведени као полимерно везиво за пресовање оксидних прахова. Везиво је уведено такошто је формирана суспензија смеше различитих оксида прахова у полимерномраствору. Концентрације полимера и састави су варирани. Уклањањем растварачадобијени су нови материјали који се састоје од честица оксида повезаних полимерима.Ови хибридни материјали окарактерисани су методама ометене тоталне рефлексијефурије трансформисане инфрацрвене спектроскопије (ATR-FTIR) као идиференцијалне термичке анализе (DTA). Микроструктура је посматранатрансмисоном електронском микроскопијом (TEM). Оксид-полимер материјали супресовани на притиску од 200 MPa и ширење испреска током грејања је праћено у температурском опсегу од собне до 550ºC употребом дилатометра. Нађено је да PVAформира графт полимер са PEG и да постоји специфична интеракција полимера саповршином честица оксида.",
publisher = "Belgrade : Association for ETRAN Society",
journal = "Science of Sintering",
title = "Oxide Powder Mixture with Poly-vinyl Alcohol (PVA) and added Polyethylene Glycol (PEG) as Plasticizer",
volume = "55",
pages = "189-2023",
doi = "10.2298/SOS220828005L"
}

Labus, N., Krstić, J., Matijašević, S.,& Pavlović, V.. (2023). Oxide Powder Mixture with Poly-vinyl Alcohol (PVA) and added Polyethylene Glycol (PEG) as Plasticizer. in Science of Sintering
Belgrade : Association for ETRAN Society., 55, 189-2023.
https://doi.org/10.2298/SOS220828005L

Labus N, Krstić J, Matijašević S, Pavlović V. Oxide Powder Mixture with Poly-vinyl Alcohol (PVA) and added Polyethylene Glycol (PEG) as Plasticizer. in Science of Sintering. 2023;55:189-2023.
doi:10.2298/SOS220828005L .

Labus, Nebojsa, Krstić, Jugoslav, Matijašević, Srđan, Pavlović, Vladimir, "Oxide Powder Mixture with Poly-vinyl Alcohol (PVA) and added Polyethylene Glycol (PEG) as Plasticizer" in Science of Sintering, 55 (2023):189-2023,
https://doi.org/10.2298/SOS220828005L . .

TY  - JOUR
AU  - Jevremović, Anka
AU  - Savić, Marjetka
AU  - Janošević Ležaić, Aleksandra
AU  - Krstić, Jugoslav
AU  - Gavrilov, Nemanja
AU  - Bajuk-Bogdanović, Danica
AU  - Milojević-Rakić, Maja
AU  - Ćirić-Marjanović, Gordana
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7163
AB  - The environmental application of the carbonized composites of the Zn-containing metal-organic framework MOF-5 and polyaniline (PANI) in its emeraldine salt and base forms (C-(MOF-5/PANI)) was investigated for the first time. Textural properties and particle size distributions revealed that composites are dominantly mesoporous and nanoscale in nature, while Raman spectroscopy revealed the ZnO phase beneath the carbon matrix. Adsorption of pesticide, dye, and metal cation on C-(MOF-5/PANI) composites in aqueous solutions was evaluated and compared with the behavior of the precursor components, carbonized MOF-5 (cMOF), and carbonized PANIs. A lower MOF-5 content in the precursor, a higher specific surface area, and the pore volume of the composites led to improved adsorption performance for acetamiprid (124 mg/g) and Methylene Blue (135 mg/g). The presence of O/N functional groups in composites is essential for the adsorption of nitrogen-rich pollutants through hydrogen bonding with an estimated monolayer capacity twice as high as that of cMOF. The proton exchange accompanying Cd2+ retention was associated with the Zn/Cd ion exchange, and the highest capacity (9.8 mg/g) was observed for the composite synthesized from the precursor with a high MOF-5 content. The multifunctionality of composites was evidenced in mixtures of pollutants where noticeably better performance for Cd2+ removal was found for the composite compared to cMOF. Competitive binding between three pollutants favored the adsorption of pesticide and dye, thereby hindering to some extent the ion exchange necessary for the removal of metal cations. The results emphasize the importance of the PANI form and MOF-5/PANI weight ratio in precursors for the development of surface, porosity, and active sites in C-(MOF-5/PANI) composites, thus guiding their environmental efficiency. The study also demonstrated that C-(MOF-5/PANI) composites retained studied pollutants much better than carbonized precursor PANIs and showed comparable or better adsorption ability than cMOF.
T2  - Polymers
T1  - Environmental Potential of Carbonized MOF-5/PANI Composites for Pesticide, Dye, and Metal Cations—Can They Actually Retain Them All?
VL  - 15
IS  - 22
SP  - 4349
DO  - 10.3390/polym15224349
ER  - 

@article{
author = "Jevremović, Anka and Savić, Marjetka and Janošević Ležaić, Aleksandra and Krstić, Jugoslav and Gavrilov, Nemanja and Bajuk-Bogdanović, Danica and Milojević-Rakić, Maja and Ćirić-Marjanović, Gordana",
year = "2023",
abstract = "The environmental application of the carbonized composites of the Zn-containing metal-organic framework MOF-5 and polyaniline (PANI) in its emeraldine salt and base forms (C-(MOF-5/PANI)) was investigated for the first time. Textural properties and particle size distributions revealed that composites are dominantly mesoporous and nanoscale in nature, while Raman spectroscopy revealed the ZnO phase beneath the carbon matrix. Adsorption of pesticide, dye, and metal cation on C-(MOF-5/PANI) composites in aqueous solutions was evaluated and compared with the behavior of the precursor components, carbonized MOF-5 (cMOF), and carbonized PANIs. A lower MOF-5 content in the precursor, a higher specific surface area, and the pore volume of the composites led to improved adsorption performance for acetamiprid (124 mg/g) and Methylene Blue (135 mg/g). The presence of O/N functional groups in composites is essential for the adsorption of nitrogen-rich pollutants through hydrogen bonding with an estimated monolayer capacity twice as high as that of cMOF. The proton exchange accompanying Cd2+ retention was associated with the Zn/Cd ion exchange, and the highest capacity (9.8 mg/g) was observed for the composite synthesized from the precursor with a high MOF-5 content. The multifunctionality of composites was evidenced in mixtures of pollutants where noticeably better performance for Cd2+ removal was found for the composite compared to cMOF. Competitive binding between three pollutants favored the adsorption of pesticide and dye, thereby hindering to some extent the ion exchange necessary for the removal of metal cations. The results emphasize the importance of the PANI form and MOF-5/PANI weight ratio in precursors for the development of surface, porosity, and active sites in C-(MOF-5/PANI) composites, thus guiding their environmental efficiency. The study also demonstrated that C-(MOF-5/PANI) composites retained studied pollutants much better than carbonized precursor PANIs and showed comparable or better adsorption ability than cMOF.",
journal = "Polymers",
title = "Environmental Potential of Carbonized MOF-5/PANI Composites for Pesticide, Dye, and Metal Cations—Can They Actually Retain Them All?",
volume = "15",
number = "22",
pages = "4349",
doi = "10.3390/polym15224349"
}

Jevremović, A., Savić, M., Janošević Ležaić, A., Krstić, J., Gavrilov, N., Bajuk-Bogdanović, D., Milojević-Rakić, M.,& Ćirić-Marjanović, G.. (2023). Environmental Potential of Carbonized MOF-5/PANI Composites for Pesticide, Dye, and Metal Cations—Can They Actually Retain Them All?. in Polymers, 15(22), 4349.
https://doi.org/10.3390/polym15224349

Jevremović A, Savić M, Janošević Ležaić A, Krstić J, Gavrilov N, Bajuk-Bogdanović D, Milojević-Rakić M, Ćirić-Marjanović G. Environmental Potential of Carbonized MOF-5/PANI Composites for Pesticide, Dye, and Metal Cations—Can They Actually Retain Them All?. in Polymers. 2023;15(22):4349.
doi:10.3390/polym15224349 .

Jevremović, Anka, Savić, Marjetka, Janošević Ležaić, Aleksandra, Krstić, Jugoslav, Gavrilov, Nemanja, Bajuk-Bogdanović, Danica, Milojević-Rakić, Maja, Ćirić-Marjanović, Gordana, "Environmental Potential of Carbonized MOF-5/PANI Composites for Pesticide, Dye, and Metal Cations—Can They Actually Retain Them All?" in Polymers, 15, no. 22 (2023):4349,
https://doi.org/10.3390/polym15224349 . .

TY  - JOUR
AU  - Popadić, Daliborka
AU  - Gavrilov, Nemanja
AU  - Krstić, Jugoslav
AU  - Nedić Vasiljević, Bojana
AU  - Janošević-Ležaić, Aleksandra
AU  - Uskoković-Marković, Snežana
AU  - Milojević-Rakić, Maja
AU  - Bajuk-Bogdanović, Danica
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7176
AB  - Herein we unequivocally identify the mechanism of zeolite-catalysed thermal degradation of pesticide, employing Fourier-transform infrared spectroscopy (FTIR), Raman and mass spectrometry following temperature decomposition (TPDe/MS). We demonstrate that Y zeolite can effectively adsorb a significant amount of acetamiprid both in a single trial (168 mg/g) and in 10 cycles (1249 mg/g) with intermittent thermal regeneration at 300 °C. Sectional vibrational analysis of acetamiprid two-stage thermal degradation is performed for pristine and supported pesticide. The acetamiprid Raman spectral changes appear at 200 °C, while partial carbonization occurs at 250 °C. The gradual disappearance of the FTIR bands of acetamiprid is seen up to 270 °C when two Raman signature bands for carbonised material emerged. The TPDe/MS profiles reveal the evolution of mass fragments - in the first step, cleavage of the C[sbnd]C bond occurs between the aromatic core of the molecule and its tail-end, followed by cleavage of the C[sbnd]N bond. The mechanism of adsorbed acetamiprid degradation follows the same step, at significantly lower temperatures, as the process is catalysed by the interaction of acetamiprid nitrogens and zeolite support. Reduced temperature degradation allows for a quick recovery process that leaves 65% efficacy after 10 cycles. After numerous cycles of recovery, a subsequent one-time heat treatment at 700 °C completely restores initial efficacy. The efficient adsorption, novel details on degradation mechanism and ease of regeneration procedure place the Y zeolite at the forefront of future all-encompassing environmental solutions.
PB  - Elsevier B.V.
T2  - Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
T1  - Spectral evidence of acetamiprid's thermal degradation products and mechanism
VL  - 301
IS  - 15
DO  - 10.1016/j.saa.2023.122987
ER  - 

@article{
author = "Popadić, Daliborka and Gavrilov, Nemanja and Krstić, Jugoslav and Nedić Vasiljević, Bojana and Janošević-Ležaić, Aleksandra and Uskoković-Marković, Snežana and Milojević-Rakić, Maja and Bajuk-Bogdanović, Danica",
year = "2023",
abstract = "Herein we unequivocally identify the mechanism of zeolite-catalysed thermal degradation of pesticide, employing Fourier-transform infrared spectroscopy (FTIR), Raman and mass spectrometry following temperature decomposition (TPDe/MS). We demonstrate that Y zeolite can effectively adsorb a significant amount of acetamiprid both in a single trial (168 mg/g) and in 10 cycles (1249 mg/g) with intermittent thermal regeneration at 300 °C. Sectional vibrational analysis of acetamiprid two-stage thermal degradation is performed for pristine and supported pesticide. The acetamiprid Raman spectral changes appear at 200 °C, while partial carbonization occurs at 250 °C. The gradual disappearance of the FTIR bands of acetamiprid is seen up to 270 °C when two Raman signature bands for carbonised material emerged. The TPDe/MS profiles reveal the evolution of mass fragments - in the first step, cleavage of the C[sbnd]C bond occurs between the aromatic core of the molecule and its tail-end, followed by cleavage of the C[sbnd]N bond. The mechanism of adsorbed acetamiprid degradation follows the same step, at significantly lower temperatures, as the process is catalysed by the interaction of acetamiprid nitrogens and zeolite support. Reduced temperature degradation allows for a quick recovery process that leaves 65% efficacy after 10 cycles. After numerous cycles of recovery, a subsequent one-time heat treatment at 700 °C completely restores initial efficacy. The efficient adsorption, novel details on degradation mechanism and ease of regeneration procedure place the Y zeolite at the forefront of future all-encompassing environmental solutions.",
publisher = "Elsevier B.V.",
journal = "Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy",
title = "Spectral evidence of acetamiprid's thermal degradation products and mechanism",
volume = "301",
number = "15",
doi = "10.1016/j.saa.2023.122987"
}

Popadić, D., Gavrilov, N., Krstić, J., Nedić Vasiljević, B., Janošević-Ležaić, A., Uskoković-Marković, S., Milojević-Rakić, M.,& Bajuk-Bogdanović, D.. (2023). Spectral evidence of acetamiprid's thermal degradation products and mechanism. in Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
Elsevier B.V.., 301(15).
https://doi.org/10.1016/j.saa.2023.122987

Popadić D, Gavrilov N, Krstić J, Nedić Vasiljević B, Janošević-Ležaić A, Uskoković-Marković S, Milojević-Rakić M, Bajuk-Bogdanović D. Spectral evidence of acetamiprid's thermal degradation products and mechanism. in Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy. 2023;301(15).
doi:10.1016/j.saa.2023.122987 .

Popadić, Daliborka, Gavrilov, Nemanja, Krstić, Jugoslav, Nedić Vasiljević, Bojana, Janošević-Ležaić, Aleksandra, Uskoković-Marković, Snežana, Milojević-Rakić, Maja, Bajuk-Bogdanović, Danica, "Spectral evidence of acetamiprid's thermal degradation products and mechanism" in Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy, 301, no. 15 (2023),
https://doi.org/10.1016/j.saa.2023.122987 . .

TY  - JOUR
AU  - Nježić, Zvonko
AU  - Kostić, Milan D.
AU  - Marić, Boško D.
AU  - Stamenković, Olivera
AU  - Šimurina, Olivera D.
AU  - Krstić, Jugoslav
AU  - Veljković, Vlada B.
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5399
AB  - A low-cost, highly active CaO-based catalyst was prepared from waste filter cake (WFC) from a sugar beet processing factory by calcination in air at 900 °C for 2 h, referred to as the calcined filter cake (CFC). It was used to catalyze the rapeseed oil transesterification with methanol under mild reaction conditions (methanol-to-oil molar ratio of 9:1, catalyst loading of 4–10 %, and reaction temperature of 40–60 °C). Rapeseed oil was characterized regarding the physicochemical properties and fatty acid profile. Low free fatty acid content (about 2.0 mg KOH/g) allowed the direct use of the base CFC catalyst for rapeseed oil transesterification. Rapeseed oil has more unsaturated fatty acids (about 93 %), with oleic acid as the most abundant, than saturated fatty acids (about 7 %). A simplified model combining the changing mechanism of the reaction and the triacylglycerols mass transfer limitation successfully describes the kinetics of transesterification. A good agreement between the model and the experiment was proved by the mean relative percentage deviation for the conversion degree of only ± 7.43 % (based on 42 data). The apparent reaction rate constant follows the Arrhenius equation with the activation energy of 51.9 kJ mol−1. The FAME content higher than 96.5 % can be obtained in wide ranges of the catalyst amount (4–10 %) and the reaction time (about 45–70 min). The following conditions were optimum: the reaction temperature of 59.2 °C, the catalyst loading of 9.1 % (based on the oil weight), and the reaction time of 47 min.
PB  - Elsevier
T2  - Fuel
T1  - Kinetics and optimization of biodiesel production from rapeseed oil over calcined waste filter cake from sugar beet processing plant
VL  - 334
SP  - 126581
DO  - 10.1016/j.fuel.2022.126581
ER  - 

@article{
author = "Nježić, Zvonko and Kostić, Milan D. and Marić, Boško D. and Stamenković, Olivera and Šimurina, Olivera D. and Krstić, Jugoslav and Veljković, Vlada B.",
year = "2023",
abstract = "A low-cost, highly active CaO-based catalyst was prepared from waste filter cake (WFC) from a sugar beet processing factory by calcination in air at 900 °C for 2 h, referred to as the calcined filter cake (CFC). It was used to catalyze the rapeseed oil transesterification with methanol under mild reaction conditions (methanol-to-oil molar ratio of 9:1, catalyst loading of 4–10 %, and reaction temperature of 40–60 °C). Rapeseed oil was characterized regarding the physicochemical properties and fatty acid profile. Low free fatty acid content (about 2.0 mg KOH/g) allowed the direct use of the base CFC catalyst for rapeseed oil transesterification. Rapeseed oil has more unsaturated fatty acids (about 93 %), with oleic acid as the most abundant, than saturated fatty acids (about 7 %). A simplified model combining the changing mechanism of the reaction and the triacylglycerols mass transfer limitation successfully describes the kinetics of transesterification. A good agreement between the model and the experiment was proved by the mean relative percentage deviation for the conversion degree of only ± 7.43 % (based on 42 data). The apparent reaction rate constant follows the Arrhenius equation with the activation energy of 51.9 kJ mol−1. The FAME content higher than 96.5 % can be obtained in wide ranges of the catalyst amount (4–10 %) and the reaction time (about 45–70 min). The following conditions were optimum: the reaction temperature of 59.2 °C, the catalyst loading of 9.1 % (based on the oil weight), and the reaction time of 47 min.",
publisher = "Elsevier",
journal = "Fuel",
title = "Kinetics and optimization of biodiesel production from rapeseed oil over calcined waste filter cake from sugar beet processing plant",
volume = "334",
pages = "126581",
doi = "10.1016/j.fuel.2022.126581"
}

Nježić, Z., Kostić, M. D., Marić, B. D., Stamenković, O., Šimurina, O. D., Krstić, J.,& Veljković, V. B.. (2023). Kinetics and optimization of biodiesel production from rapeseed oil over calcined waste filter cake from sugar beet processing plant. in Fuel
Elsevier., 334, 126581.
https://doi.org/10.1016/j.fuel.2022.126581

Nježić Z, Kostić MD, Marić BD, Stamenković O, Šimurina OD, Krstić J, Veljković VB. Kinetics and optimization of biodiesel production from rapeseed oil over calcined waste filter cake from sugar beet processing plant. in Fuel. 2023;334:126581.
doi:10.1016/j.fuel.2022.126581 .

Nježić, Zvonko, Kostić, Milan D., Marić, Boško D., Stamenković, Olivera, Šimurina, Olivera D., Krstić, Jugoslav, Veljković, Vlada B., "Kinetics and optimization of biodiesel production from rapeseed oil over calcined waste filter cake from sugar beet processing plant" in Fuel, 334 (2023):126581,
https://doi.org/10.1016/j.fuel.2022.126581 . .

TY  - JOUR
AU  - Pešić, Miloš
AU  - Krstić, Jugoslav
AU  - Verbić, Tatjana
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5612
AB  - Molecularly imprinting technology was applied for preparing selective sorbents for benzophenone-4 (BP4), an organic UV filter used in sun-screens and cosmetics. Several imprinted polymers were prepared by bulk polymerization, using BP4 as template. Combination of stability (mechanical and chemical), selectivity and robustness of the imprinted polymers with BP4 properties resulted in a successful imprinting process (imprinting factors in range 1.05–2.60). The prepared polymers were characterised by infrared spectroscopy, elemental analysis, conductometric titrations and nitrogen physisorption at 77 K. Adsorption capacities and selectivity towards 7 other organic UV filters (benzophenone-3, benzophenone-8, homosalate, butyl methoxydibenzo-ylmethane, ethyl hexyl salicylate, ethyl hexyl p-dimethylamino benzoate and ethyl hexyl p-methoxycinnamate) were determined, proving high adsorption capacity and high selectivity for BP4 binding. The highest adsorption capacity was observed for 4-vinylpyridine/ethylene glycol dimethacrylate co-polymer prepared in dimethyl sulfoxide (1.108 mmol g-1). The imprinted polymer with the highest binding capacity was applied to solid phase extraction of BP4 from aqueous solutions with 98.5 % efficiency.
AB  - Технологија молекулског обележавања примењена је у синтези селективних сорбената за бензофенон-4 (BP4), органски UV филтер који се користи у кремама за сунчање  и другим козметичким производима. Полимери су добијени полимеризацијом у маси, користећи (BP4) као матрицу. Комбинацијом стабилности (механичке и хемијске),  селективности и робусности молекулски обележених полимера са својствима BP4  извршено је успешно обележавање (фактор обележавања 1,05–2,60). Карактеризација  добијених полимера је извршена применом инфрацрвене спектроскопије, елементалне  анализе, кондуктометријских титрација и физисорпције азота на 77 К. Адсорпциони  капацицети и селективност испитани су за 7 других органских UV филтера (бензофенон-3, бензофенон-8, хомосалат, бутилметоксидибензоилметан, етилхексил-салицилат,  етилхексил-р-диметиламинобензоат и етилхексил-р-метоксицинамат), потврђујући  велики адсорпциони капацитет и високу селективност за везивање BP4. Највећи адсорпциони капацитет показао је ко-полимер 4-винилпиридина и дивинилбензена добијен  коришћењем диметил-сулфоксида као порогена (1,108 mmol/g). Полимер са највећим  капацицетом за везивање BP4 примењен је као сорбент за екстракцију чврстом фазом  BP4 из водених раствора са ефикасношћу од 98,5 %.
PB  - Belgrade : Serbian Chemical Society
T2  - Journal of the Serbian Chemical Society
T1  - Highly selective water-compatible molecularly imprinted polymers for benzophenone-4
T1  - Високо селективни водокомпатибилни молекулски обележени полимери за бензофенон-4
VL  - 88
IS  - 1
SP  - 55
EP  - 68
DO  - 10.2298/JSC22032540P
ER  - 

@article{
author = "Pešić, Miloš and Krstić, Jugoslav and Verbić, Tatjana",
year = "2023",
abstract = "Molecularly imprinting technology was applied for preparing selective sorbents for benzophenone-4 (BP4), an organic UV filter used in sun-screens and cosmetics. Several imprinted polymers were prepared by bulk polymerization, using BP4 as template. Combination of stability (mechanical and chemical), selectivity and robustness of the imprinted polymers with BP4 properties resulted in a successful imprinting process (imprinting factors in range 1.05–2.60). The prepared polymers were characterised by infrared spectroscopy, elemental analysis, conductometric titrations and nitrogen physisorption at 77 K. Adsorption capacities and selectivity towards 7 other organic UV filters (benzophenone-3, benzophenone-8, homosalate, butyl methoxydibenzo-ylmethane, ethyl hexyl salicylate, ethyl hexyl p-dimethylamino benzoate and ethyl hexyl p-methoxycinnamate) were determined, proving high adsorption capacity and high selectivity for BP4 binding. The highest adsorption capacity was observed for 4-vinylpyridine/ethylene glycol dimethacrylate co-polymer prepared in dimethyl sulfoxide (1.108 mmol g-1). The imprinted polymer with the highest binding capacity was applied to solid phase extraction of BP4 from aqueous solutions with 98.5 % efficiency., Технологија молекулског обележавања примењена је у синтези селективних сорбената за бензофенон-4 (BP4), органски UV филтер који се користи у кремама за сунчање  и другим козметичким производима. Полимери су добијени полимеризацијом у маси, користећи (BP4) као матрицу. Комбинацијом стабилности (механичке и хемијске),  селективности и робусности молекулски обележених полимера са својствима BP4  извршено је успешно обележавање (фактор обележавања 1,05–2,60). Карактеризација  добијених полимера је извршена применом инфрацрвене спектроскопије, елементалне  анализе, кондуктометријских титрација и физисорпције азота на 77 К. Адсорпциони  капацицети и селективност испитани су за 7 других органских UV филтера (бензофенон-3, бензофенон-8, хомосалат, бутилметоксидибензоилметан, етилхексил-салицилат,  етилхексил-р-диметиламинобензоат и етилхексил-р-метоксицинамат), потврђујући  велики адсорпциони капацитет и високу селективност за везивање BP4. Највећи адсорпциони капацитет показао је ко-полимер 4-винилпиридина и дивинилбензена добијен  коришћењем диметил-сулфоксида као порогена (1,108 mmol/g). Полимер са највећим  капацицетом за везивање BP4 примењен је као сорбент за екстракцију чврстом фазом  BP4 из водених раствора са ефикасношћу од 98,5 %.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "Journal of the Serbian Chemical Society",
title = "Highly selective water-compatible molecularly imprinted polymers for benzophenone-4, Високо селективни водокомпатибилни молекулски обележени полимери за бензофенон-4",
volume = "88",
number = "1",
pages = "55-68",
doi = "10.2298/JSC22032540P"
}

Pešić, M., Krstić, J.,& Verbić, T.. (2023). Highly selective water-compatible molecularly imprinted polymers for benzophenone-4. in Journal of the Serbian Chemical Society
Belgrade : Serbian Chemical Society., 88(1), 55-68.
https://doi.org/10.2298/JSC22032540P

Pešić M, Krstić J, Verbić T. Highly selective water-compatible molecularly imprinted polymers for benzophenone-4. in Journal of the Serbian Chemical Society. 2023;88(1):55-68.
doi:10.2298/JSC22032540P .

Pešić, Miloš, Krstić, Jugoslav, Verbić, Tatjana, "Highly selective water-compatible molecularly imprinted polymers for benzophenone-4" in Journal of the Serbian Chemical Society, 88, no. 1 (2023):55-68,
https://doi.org/10.2298/JSC22032540P . .

TY  - JOUR
AU  - Savić, Marjetka
AU  - Janošević Ležaić, Aleksandra
AU  - Gavrilov, Nemanja
AU  - Pašti, Igor
AU  - Nedić Vasiljević, Bojana
AU  - Krstić, Jugoslav
AU  - Ćirić-Marjanović, Gordana
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5653
AB  - Composites of carbons with metal oxides and metal sulfides have attracted a lot of interest
as materials for energy conversion and storage applications. Herein, we report on novel N,O-doped
carbon/ZnO/ZnS and N,O-doped carbon/ZnO composites (generally named C-(MOF-5/PANI)),
synthesized by the carbonization of metal–organic framework MOF-5/polyaniline (PANI) composites.
The produced C-(MOF-5/PANI)s are comprehensively characterized in terms of composition,
molecular and crystalline structure, morphology, electrical conductivity, surface area, and electrochemical
behavior. The composition and properties of C-(MOF-5/PANI) composites are dictated by
the composition of MOF-5/PANI precursors and the form of PANI (conducting emeraldine salt (ES)
or nonconducting emeraldine base). The ZnS phase is formed only with the PANI-ES form due to
S-containing counter-ions. XRPD revealed that ZnO and ZnS existed as pure wurtzite crystalline
phases. PANI and MOF-5 acted synergistically to produce C-(MOF-5/PANI)s with high SBET (up to
609 m2 g−1), electrical conductivity (up to 0.24 S cm−1), and specific capacitance, Cspec, (up to 238.2 F
g−1 at 10 mV s−1). Values of Cspec commensurated with N content in C-(MOF-5/PANI) composites (1–
10 wt.%) and overcame Cspec of carbonized individual components PANI and MOF-5. By acid etching
treatment of C-(MOF-5/PANI), SBET and Cspec increased to 1148 m2 g−1 and 341 F g−1, respectively.
The developed composites represent promising electrode materials for supercapacitors.
PB  - Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)
T2  - Materials
T1  - Carbonization of MOF-5/Polyaniline Composites to N,O-Doped Carbon/ZnO/ZnS and N,O-Doped Carbon/ZnO Composites with High Specific Capacitance, Specific Surface Area and Electrical Conductivity
VL  - 16
IS  - 3
SP  - 1018
DO  - 10.3390/ma16031018
ER  - 

@article{
author = "Savić, Marjetka and Janošević Ležaić, Aleksandra and Gavrilov, Nemanja and Pašti, Igor and Nedić Vasiljević, Bojana and Krstić, Jugoslav and Ćirić-Marjanović, Gordana",
year = "2023",
abstract = "Composites of carbons with metal oxides and metal sulfides have attracted a lot of interest
as materials for energy conversion and storage applications. Herein, we report on novel N,O-doped
carbon/ZnO/ZnS and N,O-doped carbon/ZnO composites (generally named C-(MOF-5/PANI)),
synthesized by the carbonization of metal–organic framework MOF-5/polyaniline (PANI) composites.
The produced C-(MOF-5/PANI)s are comprehensively characterized in terms of composition,
molecular and crystalline structure, morphology, electrical conductivity, surface area, and electrochemical
behavior. The composition and properties of C-(MOF-5/PANI) composites are dictated by
the composition of MOF-5/PANI precursors and the form of PANI (conducting emeraldine salt (ES)
or nonconducting emeraldine base). The ZnS phase is formed only with the PANI-ES form due to
S-containing counter-ions. XRPD revealed that ZnO and ZnS existed as pure wurtzite crystalline
phases. PANI and MOF-5 acted synergistically to produce C-(MOF-5/PANI)s with high SBET (up to
609 m2 g−1), electrical conductivity (up to 0.24 S cm−1), and specific capacitance, Cspec, (up to 238.2 F
g−1 at 10 mV s−1). Values of Cspec commensurated with N content in C-(MOF-5/PANI) composites (1–
10 wt.%) and overcame Cspec of carbonized individual components PANI and MOF-5. By acid etching
treatment of C-(MOF-5/PANI), SBET and Cspec increased to 1148 m2 g−1 and 341 F g−1, respectively.
The developed composites represent promising electrode materials for supercapacitors.",
publisher = "Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)",
journal = "Materials",
title = "Carbonization of MOF-5/Polyaniline Composites to N,O-Doped Carbon/ZnO/ZnS and N,O-Doped Carbon/ZnO Composites with High Specific Capacitance, Specific Surface Area and Electrical Conductivity",
volume = "16",
number = "3",
pages = "1018",
doi = "10.3390/ma16031018"
}

Savić, M., Janošević Ležaić, A., Gavrilov, N., Pašti, I., Nedić Vasiljević, B., Krstić, J.,& Ćirić-Marjanović, G.. (2023). Carbonization of MOF-5/Polyaniline Composites to N,O-Doped Carbon/ZnO/ZnS and N,O-Doped Carbon/ZnO Composites with High Specific Capacitance, Specific Surface Area and Electrical Conductivity. in Materials
Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)., 16(3), 1018.
https://doi.org/10.3390/ma16031018

Savić M, Janošević Ležaić A, Gavrilov N, Pašti I, Nedić Vasiljević B, Krstić J, Ćirić-Marjanović G. Carbonization of MOF-5/Polyaniline Composites to N,O-Doped Carbon/ZnO/ZnS and N,O-Doped Carbon/ZnO Composites with High Specific Capacitance, Specific Surface Area and Electrical Conductivity. in Materials. 2023;16(3):1018.
doi:10.3390/ma16031018 .

Savić, Marjetka, Janošević Ležaić, Aleksandra, Gavrilov, Nemanja, Pašti, Igor, Nedić Vasiljević, Bojana, Krstić, Jugoslav, Ćirić-Marjanović, Gordana, "Carbonization of MOF-5/Polyaniline Composites to N,O-Doped Carbon/ZnO/ZnS and N,O-Doped Carbon/ZnO Composites with High Specific Capacitance, Specific Surface Area and Electrical Conductivity" in Materials, 16, no. 3 (2023):1018,
https://doi.org/10.3390/ma16031018 . .

TY  - JOUR
AU  - Stamenković, Tijana
AU  - Pjević, Dejan
AU  - Krstić, Jugoslav
AU  - Popović, Maja
AU  - Rajić, Vladimir
AU  - Lojpur, Vesna
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5881
AB  - A set of samples of SrGd2O4 doped with Sm3+ and Dy3+with different concentrations was prepared via glycine-assisted combustion synthesis. All of the diffraction peaks are related to the pure orthorhombic lattice SrGd2O4, according to X-ray Powder Diffraction investigation. The Energy Dispersive X-ray Spectroscopy chemical characterization revealed that the structure included all desired elements. Field Emission Scanning Electron Microscopy was used to capture the morphology, which showed porous aggregated particles consisting of roughly 50 nm-sized spherical particles. The Mercury Intrusion Porosimetry was used to establish where voids originated, and the results showed that samples have a real permanent 3D pore structure. X-ray Photoelectron Spectroscopy verified the successful incorporation of Dy3+ and Sm3+ ions in the matrix. Down-conversion luminescence spectra were recorded and typical emission transitions were found for either Sm3+ (4G5/2→6H5/2, 4G5/2→6H7/2, 4G5/2→6H9/2) or Dy3+ (4F9/2→6H15/2 and 4F9/2→6H13/2) ions. Calculation of the energy band gap using UV-VIS Diffuse Reflectance Spectroscopy yielded values of 4.3 eV for both doped samples. Using UV-VIS Absorption Spectroscopy, the photocatalytic degradation process was observed. After 4 h of simulating Sun exposure, an analysis of the photocatalytic properties revealed that approximately 50% of the Rhodamine B had been mineralized.
PB  - Elsevier B.V.
T2  - Surfaces and Interfaces
T1  - Characterization and photocatalytic application of SrGd2O4 doped with rare earth Sm3+ and Dy3+ ions
VL  - 37
SP  - 102755
DO  - 10.1016/j.surfin.2023.102755
ER  - 

@article{
author = "Stamenković, Tijana and Pjević, Dejan and Krstić, Jugoslav and Popović, Maja and Rajić, Vladimir and Lojpur, Vesna",
year = "2023",
abstract = "A set of samples of SrGd2O4 doped with Sm3+ and Dy3+with different concentrations was prepared via glycine-assisted combustion synthesis. All of the diffraction peaks are related to the pure orthorhombic lattice SrGd2O4, according to X-ray Powder Diffraction investigation. The Energy Dispersive X-ray Spectroscopy chemical characterization revealed that the structure included all desired elements. Field Emission Scanning Electron Microscopy was used to capture the morphology, which showed porous aggregated particles consisting of roughly 50 nm-sized spherical particles. The Mercury Intrusion Porosimetry was used to establish where voids originated, and the results showed that samples have a real permanent 3D pore structure. X-ray Photoelectron Spectroscopy verified the successful incorporation of Dy3+ and Sm3+ ions in the matrix. Down-conversion luminescence spectra were recorded and typical emission transitions were found for either Sm3+ (4G5/2→6H5/2, 4G5/2→6H7/2, 4G5/2→6H9/2) or Dy3+ (4F9/2→6H15/2 and 4F9/2→6H13/2) ions. Calculation of the energy band gap using UV-VIS Diffuse Reflectance Spectroscopy yielded values of 4.3 eV for both doped samples. Using UV-VIS Absorption Spectroscopy, the photocatalytic degradation process was observed. After 4 h of simulating Sun exposure, an analysis of the photocatalytic properties revealed that approximately 50% of the Rhodamine B had been mineralized.",
publisher = "Elsevier B.V.",
journal = "Surfaces and Interfaces",
title = "Characterization and photocatalytic application of SrGd2O4 doped with rare earth Sm3+ and Dy3+ ions",
volume = "37",
pages = "102755",
doi = "10.1016/j.surfin.2023.102755"
}

Stamenković, T., Pjević, D., Krstić, J., Popović, M., Rajić, V.,& Lojpur, V.. (2023). Characterization and photocatalytic application of SrGd2O4 doped with rare earth Sm3+ and Dy3+ ions. in Surfaces and Interfaces
Elsevier B.V.., 37, 102755.
https://doi.org/10.1016/j.surfin.2023.102755

Stamenković T, Pjević D, Krstić J, Popović M, Rajić V, Lojpur V. Characterization and photocatalytic application of SrGd2O4 doped with rare earth Sm3+ and Dy3+ ions. in Surfaces and Interfaces. 2023;37:102755.
doi:10.1016/j.surfin.2023.102755 .

Stamenković, Tijana, Pjević, Dejan, Krstić, Jugoslav, Popović, Maja, Rajić, Vladimir, Lojpur, Vesna, "Characterization and photocatalytic application of SrGd2O4 doped with rare earth Sm3+ and Dy3+ ions" in Surfaces and Interfaces, 37 (2023):102755,
https://doi.org/10.1016/j.surfin.2023.102755 . .

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  - JOUR
AU  - Kremenović, Aleksandar
AU  - Grujić-Brojčin, Mirjana
AU  - Tomić, Nataša
AU  - Lazović, Vladimir
AU  - Bajuk-Bogdanović, Danica
AU  - Krstić, Jugoslav
AU  - Šćepanović, Maja
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5424
AB  - A size-strain line-broadening analysis of the XRPD patterns and Raman spectra for two anatase/brookite (TiO2)-based nanocomposites with carbon (C) was carried out and the results compared with those of a similar sample free of carbon. The crystal structures and microstructures of anatase and brookite, as well as their relative abundance ratio, have been refined from XRPD data by the Rietveld method (the low amount of carbon is neglected). The XRPD size-strain analysis resulted in reliable structure and microstructure results for both anatase and brookite. The experimental Raman spectra of all the samples in the region 100-200 cm-1are dominated by a strong feature primarily composed of the most intense modes of anatase (Eg ) and brookite (A 1g ). The anatase crystallite sizes of 14-17 nm, estimated by XRPD, suggest the application of the phonon confinement model (PCM) for the analysis of the anatase Eg mode, whereas the relatively large brookite crystallite size (27-29 nm) does not imply the use of the PCM for the brookite A 1g mode. Superposition of the anatase Eg mode profile, calculated by the PCM, and the Lorentzian shape of the brookite A 1g mode provide an appropriate simulation of the change in the dominant Raman feature in the spectra of TiO2-based nanocomposites with carbon. Raman spectra measured in the high-frequency range (1000-2000 cm-1) provide information on carbon in the investigated nanocomposite materials. The results from field-emission scanning electron microscope (SEM), thermogravimetric analysis (TGA), Fourier transform infrared (FTIR) spectroscopy and nitrogen physisorption measurements support the XRPD and Raman results.
PB  - UK : International Union of Crystallography
T2  - Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials
T1  - Size-strain line-broadening analysis of anatase/brookite (TiO2)-based nanocomposites with carbon (C): XRPD and Raman spectroscopic analysis
VL  - 78
SP  - 214
EP  - 222
DO  - 10.1107/S2052520622001731
ER  - 

@article{
author = "Kremenović, Aleksandar and Grujić-Brojčin, Mirjana and Tomić, Nataša and Lazović, Vladimir and Bajuk-Bogdanović, Danica and Krstić, Jugoslav and Šćepanović, Maja",
year = "2022",
abstract = "A size-strain line-broadening analysis of the XRPD patterns and Raman spectra for two anatase/brookite (TiO2)-based nanocomposites with carbon (C) was carried out and the results compared with those of a similar sample free of carbon. The crystal structures and microstructures of anatase and brookite, as well as their relative abundance ratio, have been refined from XRPD data by the Rietveld method (the low amount of carbon is neglected). The XRPD size-strain analysis resulted in reliable structure and microstructure results for both anatase and brookite. The experimental Raman spectra of all the samples in the region 100-200 cm-1are dominated by a strong feature primarily composed of the most intense modes of anatase (Eg ) and brookite (A 1g ). The anatase crystallite sizes of 14-17 nm, estimated by XRPD, suggest the application of the phonon confinement model (PCM) for the analysis of the anatase Eg mode, whereas the relatively large brookite crystallite size (27-29 nm) does not imply the use of the PCM for the brookite A 1g mode. Superposition of the anatase Eg mode profile, calculated by the PCM, and the Lorentzian shape of the brookite A 1g mode provide an appropriate simulation of the change in the dominant Raman feature in the spectra of TiO2-based nanocomposites with carbon. Raman spectra measured in the high-frequency range (1000-2000 cm-1) provide information on carbon in the investigated nanocomposite materials. The results from field-emission scanning electron microscope (SEM), thermogravimetric analysis (TGA), Fourier transform infrared (FTIR) spectroscopy and nitrogen physisorption measurements support the XRPD and Raman results.",
publisher = "UK : International Union of Crystallography",
journal = "Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials",
title = "Size-strain line-broadening analysis of anatase/brookite (TiO2)-based nanocomposites with carbon (C): XRPD and Raman spectroscopic analysis",
volume = "78",
pages = "214-222",
doi = "10.1107/S2052520622001731"
}

Kremenović, A., Grujić-Brojčin, M., Tomić, N., Lazović, V., Bajuk-Bogdanović, D., Krstić, J.,& Šćepanović, M.. (2022). Size-strain line-broadening analysis of anatase/brookite (TiO2)-based nanocomposites with carbon (C): XRPD and Raman spectroscopic analysis. in Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials
UK : International Union of Crystallography., 78, 214-222.
https://doi.org/10.1107/S2052520622001731

Kremenović A, Grujić-Brojčin M, Tomić N, Lazović V, Bajuk-Bogdanović D, Krstić J, Šćepanović M. Size-strain line-broadening analysis of anatase/brookite (TiO2)-based nanocomposites with carbon (C): XRPD and Raman spectroscopic analysis. in Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials. 2022;78:214-222.
doi:10.1107/S2052520622001731 .

Kremenović, Aleksandar, Grujić-Brojčin, Mirjana, Tomić, Nataša, Lazović, Vladimir, Bajuk-Bogdanović, Danica, Krstić, Jugoslav, Šćepanović, Maja, "Size-strain line-broadening analysis of anatase/brookite (TiO2)-based nanocomposites with carbon (C): XRPD and Raman spectroscopic analysis" in Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials, 78 (2022):214-222,
https://doi.org/10.1107/S2052520622001731 . .

TY  - JOUR
AU  - Pantić, Nevena
AU  - Spasojević, Milica
AU  - Stojanović, Željko
AU  - Veljović, Đorđe
AU  - Krstić, Jugoslav
AU  - Balaž, Ana Marija
AU  - Prodanović, Radivoje
AU  - Prodanović, Olivera
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7532
AB  - Novel macroporous copolymers of glycidyl methacrylate and ethylene glycol dimethacrylate with mean pore size diameters ranging from 150 to 310 nm were synthesized by dispersion polymerization and modified with ethylenediamine. The glutaraldehyde and periodate method were employed to immobilize horseradish peroxidase (HRP) onto these carriers. The activity of the immobilized enzyme was greatly affected by the pore size of the carrier. The highest specific activities of 9.65 and 8.94 U/g of dry weight were obtained for HRP immobilized by the periodate-route onto poly(GMA‐co‐EGDMA) carriers with pore size diameters of 234 and 297 nm, respectively. Stability studies showed an improved operational stability of immobilized peroxidase at 65 °C and in an organic solvent. HRP immobilized on a copolymer with a pore size of 234 nm, showing the highest specific activity and good stability, had higher activities at almost all pH values than the native enzyme and the increased Km value for pyrogallol oxidation. Immobilized HRP retained 80% of its original activity after five consecutive cycles of the pyrogallol oxidation and 98% of its initial activity in a storage stability study. Enzyme immobilized onto the macroporous copolymer with the pore size diameter of 234 nm showed a substantial degree of phenol removal achieved by immobilized peroxidase.
PB  - Springer
T2  - Journal of Polymers and the Environment
T1  - Immobilization of Horseradish Peroxidase on Macroporous Glycidyl-Based Copolymers with Different Surface Characteristics for the Removal of Phenol
VL  - 30
SP  - 3005
EP  - 3020
DO  - 10.1007/s10924-021-02364-3
ER  - 

@article{
author = "Pantić, Nevena and Spasojević, Milica and Stojanović, Željko and Veljović, Đorđe and Krstić, Jugoslav and Balaž, Ana Marija and Prodanović, Radivoje and Prodanović, Olivera",
year = "2022",
abstract = "Novel macroporous copolymers of glycidyl methacrylate and ethylene glycol dimethacrylate with mean pore size diameters ranging from 150 to 310 nm were synthesized by dispersion polymerization and modified with ethylenediamine. The glutaraldehyde and periodate method were employed to immobilize horseradish peroxidase (HRP) onto these carriers. The activity of the immobilized enzyme was greatly affected by the pore size of the carrier. The highest specific activities of 9.65 and 8.94 U/g of dry weight were obtained for HRP immobilized by the periodate-route onto poly(GMA‐co‐EGDMA) carriers with pore size diameters of 234 and 297 nm, respectively. Stability studies showed an improved operational stability of immobilized peroxidase at 65 °C and in an organic solvent. HRP immobilized on a copolymer with a pore size of 234 nm, showing the highest specific activity and good stability, had higher activities at almost all pH values than the native enzyme and the increased Km value for pyrogallol oxidation. Immobilized HRP retained 80% of its original activity after five consecutive cycles of the pyrogallol oxidation and 98% of its initial activity in a storage stability study. Enzyme immobilized onto the macroporous copolymer with the pore size diameter of 234 nm showed a substantial degree of phenol removal achieved by immobilized peroxidase.",
publisher = "Springer",
journal = "Journal of Polymers and the Environment",
title = "Immobilization of Horseradish Peroxidase on Macroporous Glycidyl-Based Copolymers with Different Surface Characteristics for the Removal of Phenol",
volume = "30",
pages = "3005-3020",
doi = "10.1007/s10924-021-02364-3"
}

Pantić, N., Spasojević, M., Stojanović, Ž., Veljović, Đ., Krstić, J., Balaž, A. M., Prodanović, R.,& Prodanović, O.. (2022). Immobilization of Horseradish Peroxidase on Macroporous Glycidyl-Based Copolymers with Different Surface Characteristics for the Removal of Phenol. in Journal of Polymers and the Environment
Springer., 30, 3005-3020.
https://doi.org/10.1007/s10924-021-02364-3

Pantić N, Spasojević M, Stojanović Ž, Veljović Đ, Krstić J, Balaž AM, Prodanović R, Prodanović O. Immobilization of Horseradish Peroxidase on Macroporous Glycidyl-Based Copolymers with Different Surface Characteristics for the Removal of Phenol. in Journal of Polymers and the Environment. 2022;30:3005-3020.
doi:10.1007/s10924-021-02364-3 .

Pantić, Nevena, Spasojević, Milica, Stojanović, Željko, Veljović, Đorđe, Krstić, Jugoslav, Balaž, Ana Marija, Prodanović, Radivoje, Prodanović, Olivera, "Immobilization of Horseradish Peroxidase on Macroporous Glycidyl-Based Copolymers with Different Surface Characteristics for the Removal of Phenol" in Journal of Polymers and the Environment, 30 (2022):3005-3020,
https://doi.org/10.1007/s10924-021-02364-3 . .

TY  - JOUR
AU  - Janošević-Ležaić, Aleksandra
AU  - Bajuk-Bogdanović, Danica
AU  - Krstić, Jugoslav
AU  - Jovanović, Zoran
AU  - Mravik, Željko
AU  - Kovač, Janez
AU  - Gavrilov, Nemanja
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5254
AB  - Transformation of tannic acid (TA), a cheap, abundant and environmentally friendly (by)product, upon carbonization at various temperatures was examined as it is extensively being used in energy storing devices. In addition of reviling what is happening with TA upon carbonization, a step further has been taken to scrutinize the role of carbonized TA (CTA) playing in energy storage composites. Increasing the carbonization temperature from 500 ◦C to 800 ◦C led to a nine orders of magnitude increase in conductivity, from 9⋅10–9 S cm
PB  - Elsevier
T2  - Fuel
T1  - What role does carbonized tannic acid play in energy storage composites?
VL  - 312
DO  - 10.1016/j.fuel.2021.122930
ER  - 

@article{
author = "Janošević-Ležaić, Aleksandra and Bajuk-Bogdanović, Danica and Krstić, Jugoslav and Jovanović, Zoran and Mravik, Željko and Kovač, Janez and Gavrilov, Nemanja",
year = "2022",
abstract = "Transformation of tannic acid (TA), a cheap, abundant and environmentally friendly (by)product, upon carbonization at various temperatures was examined as it is extensively being used in energy storing devices. In addition of reviling what is happening with TA upon carbonization, a step further has been taken to scrutinize the role of carbonized TA (CTA) playing in energy storage composites. Increasing the carbonization temperature from 500 ◦C to 800 ◦C led to a nine orders of magnitude increase in conductivity, from 9⋅10–9 S cm",
publisher = "Elsevier",
journal = "Fuel",
title = "What role does carbonized tannic acid play in energy storage composites?",
volume = "312",
doi = "10.1016/j.fuel.2021.122930"
}

Janošević-Ležaić, A., Bajuk-Bogdanović, D., Krstić, J., Jovanović, Z., Mravik, Ž., Kovač, J.,& Gavrilov, N.. (2022). What role does carbonized tannic acid play in energy storage composites?. in Fuel
Elsevier., 312.
https://doi.org/10.1016/j.fuel.2021.122930

Janošević-Ležaić A, Bajuk-Bogdanović D, Krstić J, Jovanović Z, Mravik Ž, Kovač J, Gavrilov N. What role does carbonized tannic acid play in energy storage composites?. in Fuel. 2022;312.
doi:10.1016/j.fuel.2021.122930 .

Janošević-Ležaić, Aleksandra, Bajuk-Bogdanović, Danica, Krstić, Jugoslav, Jovanović, Zoran, Mravik, Željko, Kovač, Janez, Gavrilov, Nemanja, "What role does carbonized tannic acid play in energy storage composites?" in Fuel, 312 (2022),
https://doi.org/10.1016/j.fuel.2021.122930 . .

TY  - JOUR
AU  - Rupar, Jelena
AU  - Bajuk-Bogdanović, Danica
AU  - Milojević-Rakić, Maja
AU  - Krstić, Jugoslav
AU  - Upadhyay, Kush
AU  - Gavrilov, Nemanja
AU  - Janošević-Ležaić, Aleksandra
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5255
AB  - Here, we propose a novel, electrochemical preparation of in situ N-doped alginate-based carbon precursors with monodispersed zinc ions. Obtained carbons were evaluated by spectroscopic (FTIR, Raman and XPS), textural (N2 physisorption), microscopic (TEM) and elemental (SEM-EDS) descriptors to establish their distinctive fea- tures originating from different synthetic procedures. Carbons characteristics were assessed in view of several carbonization temperatures applied for their preparation from alginate precursors, and individual and joint effect of zinc and nitrogen on the precursor. Obtained Zn monodispersion, emphasizes the significance of electro- chemical preparation, allowing increasing temperature to induce changes from its ionic form to carbonate and oxide, while at 800 ◦C ZnO further reduces and evaporates. Since homogeneously dispersed Zn species acts as porosity evolving agent during carbonization, a substantial surface area is developed, in the range 718–1056 m2 g
PB  - Elsevier
T2  - Microporous and Mesoporous Materials
T1  - Tailored porosity development in carbons via Zn2+ monodispersion: Fitting supercapacitors
VL  - 335
DO  - 10.1016/j.micromeso.2022.111790
ER  - 

@article{
author = "Rupar, Jelena and Bajuk-Bogdanović, Danica and Milojević-Rakić, Maja and Krstić, Jugoslav and Upadhyay, Kush and Gavrilov, Nemanja and Janošević-Ležaić, Aleksandra",
year = "2022",
abstract = "Here, we propose a novel, electrochemical preparation of in situ N-doped alginate-based carbon precursors with monodispersed zinc ions. Obtained carbons were evaluated by spectroscopic (FTIR, Raman and XPS), textural (N2 physisorption), microscopic (TEM) and elemental (SEM-EDS) descriptors to establish their distinctive fea- tures originating from different synthetic procedures. Carbons characteristics were assessed in view of several carbonization temperatures applied for their preparation from alginate precursors, and individual and joint effect of zinc and nitrogen on the precursor. Obtained Zn monodispersion, emphasizes the significance of electro- chemical preparation, allowing increasing temperature to induce changes from its ionic form to carbonate and oxide, while at 800 ◦C ZnO further reduces and evaporates. Since homogeneously dispersed Zn species acts as porosity evolving agent during carbonization, a substantial surface area is developed, in the range 718–1056 m2 g",
publisher = "Elsevier",
journal = "Microporous and Mesoporous Materials",
title = "Tailored porosity development in carbons via Zn2+ monodispersion: Fitting supercapacitors",
volume = "335",
doi = "10.1016/j.micromeso.2022.111790"
}

Rupar, J., Bajuk-Bogdanović, D., Milojević-Rakić, M., Krstić, J., Upadhyay, K., Gavrilov, N.,& Janošević-Ležaić, A.. (2022). Tailored porosity development in carbons via Zn2+ monodispersion: Fitting supercapacitors. in Microporous and Mesoporous Materials
Elsevier., 335.
https://doi.org/10.1016/j.micromeso.2022.111790

Rupar J, Bajuk-Bogdanović D, Milojević-Rakić M, Krstić J, Upadhyay K, Gavrilov N, Janošević-Ležaić A. Tailored porosity development in carbons via Zn2+ monodispersion: Fitting supercapacitors. in Microporous and Mesoporous Materials. 2022;335.
doi:10.1016/j.micromeso.2022.111790 .

Rupar, Jelena, Bajuk-Bogdanović, Danica, Milojević-Rakić, Maja, Krstić, Jugoslav, Upadhyay, Kush, Gavrilov, Nemanja, Janošević-Ležaić, Aleksandra, "Tailored porosity development in carbons via Zn2+ monodispersion: Fitting supercapacitors" in Microporous and Mesoporous Materials, 335 (2022),
https://doi.org/10.1016/j.micromeso.2022.111790 . .

TY  - JOUR
AU  - Miladinović, Marija M.
AU  - Krstić, Jugoslav
AU  - Zdujić, Miodrag V.
AU  - Veselinović, Ljiljana M.
AU  - Veljović, Đorđe
AU  - Banković-Ilić, Ivana B.
AU  - Stamenković, Olivera
AU  - Veljković, Vlada B.
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4868
AB  - Hazelnut shell ash was investigated as a new base catalyst for the transesterification of used cooking sunflower oil to biodiesel. To understand its catalytic properties, the prepared ash was characterized by EDX, XRD, TGA/DTA, Hg porosimetry, N2 physisorption, FE-SEM, and basic strength measurements. The effects of the catalyst loading in the range of 1–5% of the oil weight and the methanol-to-oil molar ratio of 6:1–18:1 on the kinetics of the fatty acid methyl esters synthesis were established. Moreover, the leaching and reusability of the catalyst were assessed. The obtained results revealed that hazelnut shell ash was mostly composed of K, Ca, and Mg. The highest ester content (98%) was achieved at the catalyst loading of 5%, the methanol-to-oil molar ratio of 12:1, and the reaction time of 10 min. The contribution of homogeneous catalysis because of the catalyst leaching was confirmed but did not determine the overall reaction rate. The catalyst can be reused after the recalcination at 800 °C for 2 h achieving the high methyl esters content (>96%) in 30 min after three subsequent runs. The overall reaction followed the pseudo-first-order kinetics with respect to triacylglycerols. A linear relationship between the apparent reaction rate constant and the catalyst loading and the methanol-to-oil molar ratio was determined. The determined value of the reaction rate constant was 0.0576 dm6/(min•mol2).
PB  - Elsevier
T2  - Renewable Energy
T1  - Transesterification of used cooking sunflower oil catalyzed by hazelnut shell ash
VL  - 183
SP  - 103
EP  - 113
DO  - 10.1016/j.renene.2021.10.071
ER  - 

@article{
author = "Miladinović, Marija M. and Krstić, Jugoslav and Zdujić, Miodrag V. and Veselinović, Ljiljana M. and Veljović, Đorđe and Banković-Ilić, Ivana B. and Stamenković, Olivera and Veljković, Vlada B.",
year = "2022",
abstract = "Hazelnut shell ash was investigated as a new base catalyst for the transesterification of used cooking sunflower oil to biodiesel. To understand its catalytic properties, the prepared ash was characterized by EDX, XRD, TGA/DTA, Hg porosimetry, N2 physisorption, FE-SEM, and basic strength measurements. The effects of the catalyst loading in the range of 1–5% of the oil weight and the methanol-to-oil molar ratio of 6:1–18:1 on the kinetics of the fatty acid methyl esters synthesis were established. Moreover, the leaching and reusability of the catalyst were assessed. The obtained results revealed that hazelnut shell ash was mostly composed of K, Ca, and Mg. The highest ester content (98%) was achieved at the catalyst loading of 5%, the methanol-to-oil molar ratio of 12:1, and the reaction time of 10 min. The contribution of homogeneous catalysis because of the catalyst leaching was confirmed but did not determine the overall reaction rate. The catalyst can be reused after the recalcination at 800 °C for 2 h achieving the high methyl esters content (>96%) in 30 min after three subsequent runs. The overall reaction followed the pseudo-first-order kinetics with respect to triacylglycerols. A linear relationship between the apparent reaction rate constant and the catalyst loading and the methanol-to-oil molar ratio was determined. The determined value of the reaction rate constant was 0.0576 dm6/(min•mol2).",
publisher = "Elsevier",
journal = "Renewable Energy",
title = "Transesterification of used cooking sunflower oil catalyzed by hazelnut shell ash",
volume = "183",
pages = "103-113",
doi = "10.1016/j.renene.2021.10.071"
}

Miladinović, M. M., Krstić, J., Zdujić, M. V., Veselinović, L. M., Veljović, Đ., Banković-Ilić, I. B., Stamenković, O.,& Veljković, V. B.. (2022). Transesterification of used cooking sunflower oil catalyzed by hazelnut shell ash. in Renewable Energy
Elsevier., 183, 103-113.
https://doi.org/10.1016/j.renene.2021.10.071

Miladinović MM, Krstić J, Zdujić MV, Veselinović LM, Veljović Đ, Banković-Ilić IB, Stamenković O, Veljković VB. Transesterification of used cooking sunflower oil catalyzed by hazelnut shell ash. in Renewable Energy. 2022;183:103-113.
doi:10.1016/j.renene.2021.10.071 .

Miladinović, Marija M., Krstić, Jugoslav, Zdujić, Miodrag V., Veselinović, Ljiljana M., Veljović, Đorđe, Banković-Ilić, Ivana B., Stamenković, Olivera, Veljković, Vlada B., "Transesterification of used cooking sunflower oil catalyzed by hazelnut shell ash" in Renewable Energy, 183 (2022):103-113,
https://doi.org/10.1016/j.renene.2021.10.071 . .

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  - Obradović, Milena
AU  - Daković, Aleksandra
AU  - Smiljanić, Danijela
AU  - Ožegović, Milica
AU  - Marković, Marija A.
AU  - Rottinghaus, George E.
AU  - Krstić, Jugoslav
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5349
AB  - Cationic surfactant - octadecyldimethylbenzyl ammonium chloride (ODMBA) was used for modification of the three natural raw materials - bentonite, kaolin and zeolite. Adsorption of ODMBA by minerals occurred via ion exchange of inorganic cations on minerals with surfactant. Organomodified minerals - organobentonite (OB), organokaolin (OK) and organozeolite (OZ) were studied as adsorbents for removal of two non-steroidal anti-inflammatory drugs - ibuprofen (IBU) and diclofenac sodium (DS) at pH 7. For all systems, the pseudo-second order model showed the best correlation to kinetic experimental data. In all cases, the positive values of Delta H degrees indicated that the adsorption of both IBU and DS by organomodified minerals was endothermic in nature. Equilibrium data were better described by the Freundlich isotherm model, pointing to adsorbent heterogeneous active sites for adsorption. Under applied experimental conditions, the highest adsorption of both drugs was achieved by OB, while much lower capacities were observed for OK and OZ. Nonlinear isotherms and physicochemical characterization of organomodified minerals after drugs adsorption suggested complex mechanism consisting of hydrophobic interactions between hydrophobic part of the drugs and surfactants alkyl chains, electrostatic interactions of anionic forms of IBU and DS with the cationic "head" of ODMBA, as well as anion exchange of counterion ions from ODMBA micelle and anionic forms of both drugs. Adsorption of both IBU and DS was strongly dependent on the amount of ODMBA ions in the minerals.
PB  - Elsevier
T2  - Microporous and Mesoporous Materials
T1  - Ibuprofen and diclofenac sodium adsorption onto functionalized minerals: Equilibrium, kinetic and thermodynamic studies
VL  - 335
SP  - 111795
DO  - 10.1016/j.micromeso.2022.111795
ER  - 

@article{
author = "Obradović, Milena and Daković, Aleksandra and Smiljanić, Danijela and Ožegović, Milica and Marković, Marija A. and Rottinghaus, George E. and Krstić, Jugoslav",
year = "2022",
abstract = "Cationic surfactant - octadecyldimethylbenzyl ammonium chloride (ODMBA) was used for modification of the three natural raw materials - bentonite, kaolin and zeolite. Adsorption of ODMBA by minerals occurred via ion exchange of inorganic cations on minerals with surfactant. Organomodified minerals - organobentonite (OB), organokaolin (OK) and organozeolite (OZ) were studied as adsorbents for removal of two non-steroidal anti-inflammatory drugs - ibuprofen (IBU) and diclofenac sodium (DS) at pH 7. For all systems, the pseudo-second order model showed the best correlation to kinetic experimental data. In all cases, the positive values of Delta H degrees indicated that the adsorption of both IBU and DS by organomodified minerals was endothermic in nature. Equilibrium data were better described by the Freundlich isotherm model, pointing to adsorbent heterogeneous active sites for adsorption. Under applied experimental conditions, the highest adsorption of both drugs was achieved by OB, while much lower capacities were observed for OK and OZ. Nonlinear isotherms and physicochemical characterization of organomodified minerals after drugs adsorption suggested complex mechanism consisting of hydrophobic interactions between hydrophobic part of the drugs and surfactants alkyl chains, electrostatic interactions of anionic forms of IBU and DS with the cationic "head" of ODMBA, as well as anion exchange of counterion ions from ODMBA micelle and anionic forms of both drugs. Adsorption of both IBU and DS was strongly dependent on the amount of ODMBA ions in the minerals.",
publisher = "Elsevier",
journal = "Microporous and Mesoporous Materials",
title = "Ibuprofen and diclofenac sodium adsorption onto functionalized minerals: Equilibrium, kinetic and thermodynamic studies",
volume = "335",
pages = "111795",
doi = "10.1016/j.micromeso.2022.111795"
}

Obradović, M., Daković, A., Smiljanić, D., Ožegović, M., Marković, M. A., Rottinghaus, G. E.,& Krstić, J.. (2022). Ibuprofen and diclofenac sodium adsorption onto functionalized minerals: Equilibrium, kinetic and thermodynamic studies. in Microporous and Mesoporous Materials
Elsevier., 335, 111795.
https://doi.org/10.1016/j.micromeso.2022.111795

Obradović M, Daković A, Smiljanić D, Ožegović M, Marković MA, Rottinghaus GE, Krstić J. Ibuprofen and diclofenac sodium adsorption onto functionalized minerals: Equilibrium, kinetic and thermodynamic studies. in Microporous and Mesoporous Materials. 2022;335:111795.
doi:10.1016/j.micromeso.2022.111795 .

Obradović, Milena, Daković, Aleksandra, Smiljanić, Danijela, Ožegović, Milica, Marković, Marija A., Rottinghaus, George E., Krstić, Jugoslav, "Ibuprofen and diclofenac sodium adsorption onto functionalized minerals: Equilibrium, kinetic and thermodynamic studies" in Microporous and Mesoporous Materials, 335 (2022):111795,
https://doi.org/10.1016/j.micromeso.2022.111795 . .

TY  - JOUR
AU  - Gezović, Aleksandra
AU  - Mišurović, Jana
AU  - Milovanović, Branislav
AU  - Etinski, Mihajlo
AU  - Krstić, Jugoslav
AU  - Grudić, Veselinka
AU  - Dominko, Robert
AU  - Mentus, Slavko
AU  - Vujković, Milica
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5361
AB  - New era heteroatom-doped carbons, relying on different biomass residues, play a rising role in contemporary carbon energy storage technology. Herein, an abundant waste of viticulture industry – vine shoots (VS) was carbonized and examined as electrode material for supercapacitors with non-conventional aqueous electrolyte. Biochar obtained by pre-carbonization treatment of vine shoots (at 300 °C) is impregnated with ZnCl2 at 600 °C (ACvs600) and 700 °C (ACvs700), to synthesize carbon with developed specific surface area, close to 1500 m2 g−1. The high specific capacitance of ACvs is achieved in Al-based electrolyte, which allows working voltage of 1.8 V ACvs700/Al2(SO4)3/ACvs700 cell delivers the energy density of 24 Wh kg−1 at 1 A g−1, which is higher than one measured in typical Na2SO4 (∼16 Wh kg−1) and H2SO4 electrolyte (∼11 Wh kg−1). By using Trasatti&Dunn surface charge distribution models, the reallocation of inner vs. outer charge in Al-based electrolyte is found to be different from that in H2SO4 electrolyte. The nature of the interaction between pristine/defective graphene and hydrated Al3+ ion is examined by Density Functional Theory (DFT) and discussed. Gathered experimental and theoretical data open novel perspectives for using carbon in more sustainable energy storage devices.
PB  - Elsevier
T2  - Journal of Power Sources
T1  - High Al-ion storage of vine shoots-derived activated carbon: New concept for affordable and sustainable supercapacitors
VL  - 538
SP  - 231561
DO  - 10.1016/j.jpowsour.2022.231561
ER  - 

@article{
author = "Gezović, Aleksandra and Mišurović, Jana and Milovanović, Branislav and Etinski, Mihajlo and Krstić, Jugoslav and Grudić, Veselinka and Dominko, Robert and Mentus, Slavko and Vujković, Milica",
year = "2022",
abstract = "New era heteroatom-doped carbons, relying on different biomass residues, play a rising role in contemporary carbon energy storage technology. Herein, an abundant waste of viticulture industry – vine shoots (VS) was carbonized and examined as electrode material for supercapacitors with non-conventional aqueous electrolyte. Biochar obtained by pre-carbonization treatment of vine shoots (at 300 °C) is impregnated with ZnCl2 at 600 °C (ACvs600) and 700 °C (ACvs700), to synthesize carbon with developed specific surface area, close to 1500 m2 g−1. The high specific capacitance of ACvs is achieved in Al-based electrolyte, which allows working voltage of 1.8 V ACvs700/Al2(SO4)3/ACvs700 cell delivers the energy density of 24 Wh kg−1 at 1 A g−1, which is higher than one measured in typical Na2SO4 (∼16 Wh kg−1) and H2SO4 electrolyte (∼11 Wh kg−1). By using Trasatti&Dunn surface charge distribution models, the reallocation of inner vs. outer charge in Al-based electrolyte is found to be different from that in H2SO4 electrolyte. The nature of the interaction between pristine/defective graphene and hydrated Al3+ ion is examined by Density Functional Theory (DFT) and discussed. Gathered experimental and theoretical data open novel perspectives for using carbon in more sustainable energy storage devices.",
publisher = "Elsevier",
journal = "Journal of Power Sources",
title = "High Al-ion storage of vine shoots-derived activated carbon: New concept for affordable and sustainable supercapacitors",
volume = "538",
pages = "231561",
doi = "10.1016/j.jpowsour.2022.231561"
}

Gezović, A., Mišurović, J., Milovanović, B., Etinski, M., Krstić, J., Grudić, V., Dominko, R., Mentus, S.,& Vujković, M.. (2022). High Al-ion storage of vine shoots-derived activated carbon: New concept for affordable and sustainable supercapacitors. in Journal of Power Sources
Elsevier., 538, 231561.
https://doi.org/10.1016/j.jpowsour.2022.231561

Gezović A, Mišurović J, Milovanović B, Etinski M, Krstić J, Grudić V, Dominko R, Mentus S, Vujković M. High Al-ion storage of vine shoots-derived activated carbon: New concept for affordable and sustainable supercapacitors. in Journal of Power Sources. 2022;538:231561.
doi:10.1016/j.jpowsour.2022.231561 .

Gezović, Aleksandra, Mišurović, Jana, Milovanović, Branislav, Etinski, Mihajlo, Krstić, Jugoslav, Grudić, Veselinka, Dominko, Robert, Mentus, Slavko, Vujković, Milica, "High Al-ion storage of vine shoots-derived activated carbon: New concept for affordable and sustainable supercapacitors" in Journal of Power Sources, 538 (2022):231561,
https://doi.org/10.1016/j.jpowsour.2022.231561 . .

TY  - JOUR
AU  - Krstić, Jugoslav
AU  - Nježić, Zvonko B.
AU  - Kostić, Milan D.
AU  - Marić, Boško D.
AU  - Šimurina, Olivera D.
AU  - Stamenković, Olivera
AU  - Veljković, Vlada
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5402
AB  - A solid catalyst was prepared from waste filter cake (WFC) from a sugar beet processing plant and used, after calcination at 900 °C within 2 h, for biodiesel production from rapeseed oil and methanol. The calcined WFC (CFC) catalyst was characterized by XRF, FTIR, XRD, TGA/DTG, TPDe, TPD-CO2, SEM, N2 physisorption, and Hg porosimetry. The CFC is a CaO-based catalyst with a rigid, sustainable macroporous structure with the largest particles of 2.0 × 0.5 µm, a specific surface area of 7.3 m2/g, and a basicity of 0.27 mmol/g. It provides high conversion of 97.9% in 1 h at the methanol-to-oil molar ratio of 9:1, the temperature of 60 °C, and the catalyst loading of 10% of the oil mass. Its catalytic efficiency is comparable to the WFC-based nanocatalysts and CaO-based catalysts from natural sources. CFC was reused twice with a negligible decrease in catalytic activity, ensuring a FAME content above 97% in 1 h. The biodiesel produced from rapeseed oil over the CFC catalyst has good fuel properties that fulfill most of EN 14214. Therefore, WFC is a promising source of a low-cost, highly active, basic, and environmentally friendly CFC catalyst, which could reduce biodiesel production costs. From this point of view, this catalyst has great potential for developing the process at the commercial level.
PB  - Elsevier
T2  - Process Safety and Environmental Protection
T1  - Biodiesel production from rapeseed oil over calcined waste filter cake from sugar beet processing
VL  - 168
SP  - 463
EP  - 473
DO  - 10.1016/j.psep.2022.10.021
ER  - 

@article{
author = "Krstić, Jugoslav and Nježić, Zvonko B. and Kostić, Milan D. and Marić, Boško D. and Šimurina, Olivera D. and Stamenković, Olivera and Veljković, Vlada",
year = "2022",
abstract = "A solid catalyst was prepared from waste filter cake (WFC) from a sugar beet processing plant and used, after calcination at 900 °C within 2 h, for biodiesel production from rapeseed oil and methanol. The calcined WFC (CFC) catalyst was characterized by XRF, FTIR, XRD, TGA/DTG, TPDe, TPD-CO2, SEM, N2 physisorption, and Hg porosimetry. The CFC is a CaO-based catalyst with a rigid, sustainable macroporous structure with the largest particles of 2.0 × 0.5 µm, a specific surface area of 7.3 m2/g, and a basicity of 0.27 mmol/g. It provides high conversion of 97.9% in 1 h at the methanol-to-oil molar ratio of 9:1, the temperature of 60 °C, and the catalyst loading of 10% of the oil mass. Its catalytic efficiency is comparable to the WFC-based nanocatalysts and CaO-based catalysts from natural sources. CFC was reused twice with a negligible decrease in catalytic activity, ensuring a FAME content above 97% in 1 h. The biodiesel produced from rapeseed oil over the CFC catalyst has good fuel properties that fulfill most of EN 14214. Therefore, WFC is a promising source of a low-cost, highly active, basic, and environmentally friendly CFC catalyst, which could reduce biodiesel production costs. From this point of view, this catalyst has great potential for developing the process at the commercial level.",
publisher = "Elsevier",
journal = "Process Safety and Environmental Protection",
title = "Biodiesel production from rapeseed oil over calcined waste filter cake from sugar beet processing",
volume = "168",
pages = "463-473",
doi = "10.1016/j.psep.2022.10.021"
}

Krstić, J., Nježić, Z. B., Kostić, M. D., Marić, B. D., Šimurina, O. D., Stamenković, O.,& Veljković, V.. (2022). Biodiesel production from rapeseed oil over calcined waste filter cake from sugar beet processing. in Process Safety and Environmental Protection
Elsevier., 168, 463-473.
https://doi.org/10.1016/j.psep.2022.10.021

Krstić J, Nježić ZB, Kostić MD, Marić BD, Šimurina OD, Stamenković O, Veljković V. Biodiesel production from rapeseed oil over calcined waste filter cake from sugar beet processing. in Process Safety and Environmental Protection. 2022;168:463-473.
doi:10.1016/j.psep.2022.10.021 .

Krstić, Jugoslav, Nježić, Zvonko B., Kostić, Milan D., Marić, Boško D., Šimurina, Olivera D., Stamenković, Olivera, Veljković, Vlada, "Biodiesel production from rapeseed oil over calcined waste filter cake from sugar beet processing" in Process Safety and Environmental Protection, 168 (2022):463-473,
https://doi.org/10.1016/j.psep.2022.10.021 . .

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  - Stepić, Katarina
AU  - Ljupković, Radomir
AU  - Zarubica, Aleksandra
AU  - Đorđijevski, Stefan
AU  - Matović, Branko
AU  - Krstić, Jugoslav
AU  - Bojić, Aleksandar
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5482
AB  - In this research composite based on zirconia and graphite was synthesized using the sol-gel method. Aim of this research is to activate and increase the photocatalytic activity of ZrO2 by combining with graphite-based material. Our results show that we obtained material that can remove both cationic and anionic dyes by sorption and photocatalytic processes. Obtained composite is very effective in sorption of RB19 with up to 100% removal. Photocatalytic activity of composite is higher than pristine GO and goes up to 100% for RB19 degradation and about 50% degradation of MB. These results are promising and present an excellent base for further research.
PB  - Universitatea Babes-Bolyai, Catedra de Filosofie Sistematica
T2  - Studia Universitatis Babes-Bolyai Chemia
T1  - Novel composite based on zirconia and graphite. First results of application for synthetic dyes removal
VL  - 67
IS  - 2
SP  - 23
EP  - 43
DO  - 10.24193/subbchem.2022.2.02
ER  - 

@article{
author = "Stepić, Katarina and Ljupković, Radomir and Zarubica, Aleksandra and Đorđijevski, Stefan and Matović, Branko and Krstić, Jugoslav and Bojić, Aleksandar",
year = "2022",
abstract = "In this research composite based on zirconia and graphite was synthesized using the sol-gel method. Aim of this research is to activate and increase the photocatalytic activity of ZrO2 by combining with graphite-based material. Our results show that we obtained material that can remove both cationic and anionic dyes by sorption and photocatalytic processes. Obtained composite is very effective in sorption of RB19 with up to 100% removal. Photocatalytic activity of composite is higher than pristine GO and goes up to 100% for RB19 degradation and about 50% degradation of MB. These results are promising and present an excellent base for further research.",
publisher = "Universitatea Babes-Bolyai, Catedra de Filosofie Sistematica",
journal = "Studia Universitatis Babes-Bolyai Chemia",
title = "Novel composite based on zirconia and graphite. First results of application for synthetic dyes removal",
volume = "67",
number = "2",
pages = "23-43",
doi = "10.24193/subbchem.2022.2.02"
}

Stepić, K., Ljupković, R., Zarubica, A., Đorđijevski, S., Matović, B., Krstić, J.,& Bojić, A.. (2022). Novel composite based on zirconia and graphite. First results of application for synthetic dyes removal. in Studia Universitatis Babes-Bolyai Chemia
Universitatea Babes-Bolyai, Catedra de Filosofie Sistematica., 67(2), 23-43.
https://doi.org/10.24193/subbchem.2022.2.02

Stepić K, Ljupković R, Zarubica A, Đorđijevski S, Matović B, Krstić J, Bojić A. Novel composite based on zirconia and graphite. First results of application for synthetic dyes removal. in Studia Universitatis Babes-Bolyai Chemia. 2022;67(2):23-43.
doi:10.24193/subbchem.2022.2.02 .

Stepić, Katarina, Ljupković, Radomir, Zarubica, Aleksandra, Đorđijevski, Stefan, Matović, Branko, Krstić, Jugoslav, Bojić, Aleksandar, "Novel composite based on zirconia and graphite. First results of application for synthetic dyes removal" in Studia Universitatis Babes-Bolyai Chemia, 67, no. 2 (2022):23-43,
https://doi.org/10.24193/subbchem.2022.2.02 . .

TY  - JOUR
AU  - Kandić, Irina
AU  - Kragović, Milan
AU  - Krstić, Jugoslav
AU  - Gulicovski, Jelena
AU  - Popović, Jasmina
AU  - Rosić, Milena
AU  - Karadžić, Vesna
AU  - Stojmenović, Marija
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5506
AB  - The impact of urbanization and modern agricultural practice has led to accelerated eutrophication of aquatic ecosystems, which has resulted in the massive development of cyanobacteria. Very often, in response to various environmental influences, cyanobacteria produce potentially car-cinogenic cyanotoxins. Long-term human exposure to cyanotoxins, through drinking water as well as recreational water (i.e., rivers or lakes), can cause serious health consequences. In order to overcome this problem, this paper presents the synthesis of completely new activated carbons and their potential application in contaminated water treatment. The synthesis and characterization of new active carbon materials obtained from waste biomass, date-palm leaf stalks (P_AC) and black alder cone-like flowers (A_AC) of reliable physical and chemical characteristics were presented in this article. The commercial activated carbon (C_AC) was also examined for the purpose of comparisons with the obtained materials. The detailed characterization of materials was carried out by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), low-temperature N2 physisorption, and Field emission scanning electron microscopy (FESEM). Preliminary analyzes of the adsorption capacities of all activated carbon materials were conducted on water samples from Aleksandrovac Lake (Southern part of Serbia), as a eutrophic lake, in order to remove Cyanobacteria from water. The results after 24 h of filtration showed removal efficiencies for P_AC, A_AC, and C_AC of 99.99%, 99.99% and 89.79%, respectively.
PB  - Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)
T2  - International Journal of Environmental Research and Public Health
T1  - Natural Cyanobacteria Removers Obtained from Bio-Waste Date-Palm Leaf Stalks and Black Alder Cone-Like Flowers
VL  - 19
IS  - 11
SP  - 6639
DO  - 10.3390/ijerph19116639
ER  - 

@article{
author = "Kandić, Irina and Kragović, Milan and Krstić, Jugoslav and Gulicovski, Jelena and Popović, Jasmina and Rosić, Milena and Karadžić, Vesna and Stojmenović, Marija",
year = "2022",
abstract = "The impact of urbanization and modern agricultural practice has led to accelerated eutrophication of aquatic ecosystems, which has resulted in the massive development of cyanobacteria. Very often, in response to various environmental influences, cyanobacteria produce potentially car-cinogenic cyanotoxins. Long-term human exposure to cyanotoxins, through drinking water as well as recreational water (i.e., rivers or lakes), can cause serious health consequences. In order to overcome this problem, this paper presents the synthesis of completely new activated carbons and their potential application in contaminated water treatment. The synthesis and characterization of new active carbon materials obtained from waste biomass, date-palm leaf stalks (P_AC) and black alder cone-like flowers (A_AC) of reliable physical and chemical characteristics were presented in this article. The commercial activated carbon (C_AC) was also examined for the purpose of comparisons with the obtained materials. The detailed characterization of materials was carried out by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), low-temperature N2 physisorption, and Field emission scanning electron microscopy (FESEM). Preliminary analyzes of the adsorption capacities of all activated carbon materials were conducted on water samples from Aleksandrovac Lake (Southern part of Serbia), as a eutrophic lake, in order to remove Cyanobacteria from water. The results after 24 h of filtration showed removal efficiencies for P_AC, A_AC, and C_AC of 99.99%, 99.99% and 89.79%, respectively.",
publisher = "Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)",
journal = "International Journal of Environmental Research and Public Health",
title = "Natural Cyanobacteria Removers Obtained from Bio-Waste Date-Palm Leaf Stalks and Black Alder Cone-Like Flowers",
volume = "19",
number = "11",
pages = "6639",
doi = "10.3390/ijerph19116639"
}

Kandić, I., Kragović, M., Krstić, J., Gulicovski, J., Popović, J., Rosić, M., Karadžić, V.,& Stojmenović, M.. (2022). Natural Cyanobacteria Removers Obtained from Bio-Waste Date-Palm Leaf Stalks and Black Alder Cone-Like Flowers. in International Journal of Environmental Research and Public Health
Switzerland : Multidisciplinary Digital Publishing Institute (MDPI)., 19(11), 6639.
https://doi.org/10.3390/ijerph19116639

Kandić I, Kragović M, Krstić J, Gulicovski J, Popović J, Rosić M, Karadžić V, Stojmenović M. Natural Cyanobacteria Removers Obtained from Bio-Waste Date-Palm Leaf Stalks and Black Alder Cone-Like Flowers. in International Journal of Environmental Research and Public Health. 2022;19(11):6639.
doi:10.3390/ijerph19116639 .

Kandić, Irina, Kragović, Milan, Krstić, Jugoslav, Gulicovski, Jelena, Popović, Jasmina, Rosić, Milena, Karadžić, Vesna, Stojmenović, Marija, "Natural Cyanobacteria Removers Obtained from Bio-Waste Date-Palm Leaf Stalks and Black Alder Cone-Like Flowers" in International Journal of Environmental Research and Public Health, 19, no. 11 (2022):6639,
https://doi.org/10.3390/ijerph19116639 . .

TY  - JOUR
AU  - Banić, Nemanja
AU  - Krstić, Jugoslav
AU  - Uzelac, Maria
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5505
AB  - In this paper, the optimal preparative conditions (current density, deposition temperature, calcination temperature) for the original electrochemical synthesis of ZnO-Zn coating on aluminum foil support (ZnAF) were examined and determined the application for the removal of methyl orange (MO). Optimal application conditions for removing MO (volume and concentration of a treated solution) were also determined. In the following, four immobilized ZnO/Fe2O3 photocatalysts with different molar ratios of Zn to Fe (0.42, 0.84, 1.68, and 3.36) were synthesized via the chemical precipitation method on optimized electrochemically synthesized ZnAF support. Characterization studies of synthesized materials included SEM–EDS and Raman scattering analyses. The efficiency of these catalysts for MO removal in the presence/absence of simulated solar radiation (SSR) was investigated. The adsorption isotherms were investigated, and the results show that the adsorption data were best fitted with the Freundlich adsorption isotherm model. Assessment of the thermodynamic parameters showed that although the adsorption process was weakly endothermic over the range of temperatures studied, the relatively high entropy change gave an overall negative change in Gibbs free energy making the processes spontaneous. In the presence of SSR, the optimal molar ratio of Zn to Fe was determined to be 1.68. The possibility of potential reusing the catalyst was examined six times in a row. The possibility for multiple uses of suspension, which is used for immobilization, was also examined. It was also determined that the application of the 1.68Zn/Fe/ZnAF/H2O2/SSR system after the dye removal generates hydrogen at a rate of 186.5 μmol g−1 after 6 h. Furthermore, in the presence of SSR and using a suspended form of catalyst, the removal efficiency was 1.6 times higher than the efficiency achieved with immobilized ZnO/Fe2O3 catalyst. Using the HPLC method for 1.68Zn/Fe/ZnAF/SSR system, five primary intermediates were found to be formed. The applicability of ZnO/Fe2O3/ZnAF for removal of other dyes was also examined. Graphical abstract: [Figure not available: see fulltext.]
PB  - Switzerland : Springer Nature
T2  - Environmental Science and Pollution Research
T1  - Removal of methyl orange using combined ZnO/Fe2O3/ZnO-Zn composite coated to the aluminium foil in the presence of simulated solar radiation
VL  - 29
IS  - 34
SP  - 51521
EP  - 51536
DO  - 10.1007/s11356-022-19374-w
ER  - 

@article{
author = "Banić, Nemanja and Krstić, Jugoslav and Uzelac, Maria",
year = "2022",
abstract = "In this paper, the optimal preparative conditions (current density, deposition temperature, calcination temperature) for the original electrochemical synthesis of ZnO-Zn coating on aluminum foil support (ZnAF) were examined and determined the application for the removal of methyl orange (MO). Optimal application conditions for removing MO (volume and concentration of a treated solution) were also determined. In the following, four immobilized ZnO/Fe2O3 photocatalysts with different molar ratios of Zn to Fe (0.42, 0.84, 1.68, and 3.36) were synthesized via the chemical precipitation method on optimized electrochemically synthesized ZnAF support. Characterization studies of synthesized materials included SEM–EDS and Raman scattering analyses. The efficiency of these catalysts for MO removal in the presence/absence of simulated solar radiation (SSR) was investigated. The adsorption isotherms were investigated, and the results show that the adsorption data were best fitted with the Freundlich adsorption isotherm model. Assessment of the thermodynamic parameters showed that although the adsorption process was weakly endothermic over the range of temperatures studied, the relatively high entropy change gave an overall negative change in Gibbs free energy making the processes spontaneous. In the presence of SSR, the optimal molar ratio of Zn to Fe was determined to be 1.68. The possibility of potential reusing the catalyst was examined six times in a row. The possibility for multiple uses of suspension, which is used for immobilization, was also examined. It was also determined that the application of the 1.68Zn/Fe/ZnAF/H2O2/SSR system after the dye removal generates hydrogen at a rate of 186.5 μmol g−1 after 6 h. Furthermore, in the presence of SSR and using a suspended form of catalyst, the removal efficiency was 1.6 times higher than the efficiency achieved with immobilized ZnO/Fe2O3 catalyst. Using the HPLC method for 1.68Zn/Fe/ZnAF/SSR system, five primary intermediates were found to be formed. The applicability of ZnO/Fe2O3/ZnAF for removal of other dyes was also examined. Graphical abstract: [Figure not available: see fulltext.]",
publisher = "Switzerland : Springer Nature",
journal = "Environmental Science and Pollution Research",
title = "Removal of methyl orange using combined ZnO/Fe2O3/ZnO-Zn composite coated to the aluminium foil in the presence of simulated solar radiation",
volume = "29",
number = "34",
pages = "51521-51536",
doi = "10.1007/s11356-022-19374-w"
}

Banić, N., Krstić, J.,& Uzelac, M.. (2022). Removal of methyl orange using combined ZnO/Fe2O3/ZnO-Zn composite coated to the aluminium foil in the presence of simulated solar radiation. in Environmental Science and Pollution Research
Switzerland : Springer Nature., 29(34), 51521-51536.
https://doi.org/10.1007/s11356-022-19374-w

Banić N, Krstić J, Uzelac M. Removal of methyl orange using combined ZnO/Fe2O3/ZnO-Zn composite coated to the aluminium foil in the presence of simulated solar radiation. in Environmental Science and Pollution Research. 2022;29(34):51521-51536.
doi:10.1007/s11356-022-19374-w .

Banić, Nemanja, Krstić, Jugoslav, Uzelac, Maria, "Removal of methyl orange using combined ZnO/Fe2O3/ZnO-Zn composite coated to the aluminium foil in the presence of simulated solar radiation" in Environmental Science and Pollution Research, 29, no. 34 (2022):51521-51536,
https://doi.org/10.1007/s11356-022-19374-w . .

TY  - JOUR
AU  - Zdolšek, Nikola
AU  - Janković, Bojan
AU  - Milović, Miloš
AU  - Brković, Snežana
AU  - Krstić, Jugoslav
AU  - Perović, Ivana
AU  - Vujković, Milica
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5541
AB  - The development of carbon materials with desirable textures and new aqueous electrolytes is the key strategy to improve the performance of supercapacitors. Herein, a deep eutectic solvent (DES) was used for in situ templating of a carbon material. A carbon material was characterized (XRD, N2-physisorption, FTIR, SEM and EDS) and used as an electrode material for the first time in multivalent-based supercapacitors. In situ templating of carbon was performed using a novel DES, which serves as a precursor for carbon and for in situ generation of MgO. The generation of MgO and its roles in templating of carbon were discussed. Templating of carbon with MgO lead to an increase in surface area and a microporous texture. The obtained carbon was tested in multivalent-ion (Al3+ and Mg2+) electrolytes and compared with H2SO4. The charge-storage mechanism was investigated and elaborated. The highest specific capacitance was obtained for the Al(NO3)3 electrolyte, while the operating voltage follows the order: Mg(NO3)2 > Al(NO3)3 > H2SO4. Electrical double-layer capacitance (versus pseudocapacitance) was dominant in all investigated electrolytes. The larger operating voltage in multivalent electrolytes is a consequence of the lower fraction of free water, which suppresses hydrogen evolution (when compared with H2SO4). The GCD was experimentally performed on the Al(NO3)3 electrolyte, which showed good cyclic stability, with an energy density of 22.3 Wh kg−1 at 65 W kg−1.
PB  - MDPI
T2  - Batteries
T1  - Deep Eutectic Solvent (DES) for In Situ Templating Carbon Material: Carbon Characterization and Application in Supercapacitors Containing Multivalent Ions
VL  - 8
IS  - 12
SP  - 284
DO  - 10.3390/batteries8120284
ER  - 

@article{
author = "Zdolšek, Nikola and Janković, Bojan and Milović, Miloš and Brković, Snežana and Krstić, Jugoslav and Perović, Ivana and Vujković, Milica",
year = "2022",
abstract = "The development of carbon materials with desirable textures and new aqueous electrolytes is the key strategy to improve the performance of supercapacitors. Herein, a deep eutectic solvent (DES) was used for in situ templating of a carbon material. A carbon material was characterized (XRD, N2-physisorption, FTIR, SEM and EDS) and used as an electrode material for the first time in multivalent-based supercapacitors. In situ templating of carbon was performed using a novel DES, which serves as a precursor for carbon and for in situ generation of MgO. The generation of MgO and its roles in templating of carbon were discussed. Templating of carbon with MgO lead to an increase in surface area and a microporous texture. The obtained carbon was tested in multivalent-ion (Al3+ and Mg2+) electrolytes and compared with H2SO4. The charge-storage mechanism was investigated and elaborated. The highest specific capacitance was obtained for the Al(NO3)3 electrolyte, while the operating voltage follows the order: Mg(NO3)2 > Al(NO3)3 > H2SO4. Electrical double-layer capacitance (versus pseudocapacitance) was dominant in all investigated electrolytes. The larger operating voltage in multivalent electrolytes is a consequence of the lower fraction of free water, which suppresses hydrogen evolution (when compared with H2SO4). The GCD was experimentally performed on the Al(NO3)3 electrolyte, which showed good cyclic stability, with an energy density of 22.3 Wh kg−1 at 65 W kg−1.",
publisher = "MDPI",
journal = "Batteries",
title = "Deep Eutectic Solvent (DES) for In Situ Templating Carbon Material: Carbon Characterization and Application in Supercapacitors Containing Multivalent Ions",
volume = "8",
number = "12",
pages = "284",
doi = "10.3390/batteries8120284"
}

Zdolšek, N., Janković, B., Milović, M., Brković, S., Krstić, J., Perović, I.,& Vujković, M.. (2022). Deep Eutectic Solvent (DES) for In Situ Templating Carbon Material: Carbon Characterization and Application in Supercapacitors Containing Multivalent Ions. in Batteries
MDPI., 8(12), 284.
https://doi.org/10.3390/batteries8120284

Zdolšek N, Janković B, Milović M, Brković S, Krstić J, Perović I, Vujković M. Deep Eutectic Solvent (DES) for In Situ Templating Carbon Material: Carbon Characterization and Application in Supercapacitors Containing Multivalent Ions. in Batteries. 2022;8(12):284.
doi:10.3390/batteries8120284 .

Zdolšek, Nikola, Janković, Bojan, Milović, Miloš, Brković, Snežana, Krstić, Jugoslav, Perović, Ivana, Vujković, Milica, "Deep Eutectic Solvent (DES) for In Situ Templating Carbon Material: Carbon Characterization and Application in Supercapacitors Containing Multivalent Ions" in Batteries, 8, no. 12 (2022):284,
https://doi.org/10.3390/batteries8120284 . .

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 . .