TY  - CONF
AU  - Dojčinović, Milena
AU  - Vasiljević, Zorka Z
AU  - Tadic, Nenad
AU  - Krstić, Jugoslav
AU  - Nikolić, Maria Vesna
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6765
AB  - Transition metal oxides (TMOs) are promising materials because of their specific properties enabling their application in energy solutions, such as their pseudocapacitive behavior enabling utilization as electrode materials in supercapacitors. Activated carbon is a material well known as an electric double layer capacitor (EDLC). Bringing together the two different capacitor materials- TMOs as pseudocapacitors and carbon materials as EDL capacitors is the goal for generating future generation supercapacitors. Nickel manganite is a material of interest because of various oxidation states of manganese which provide its reactivity in oxidoreduction reactions, enhancing the pseudocapacitive behavior. Herein, we synthesized nano-sized nickel manganite by a sol-gel combustion synthesis process using glycine as fuel and subsequent calcination process. The structure and morphology of synthesized material was investigated via XRD, FESEM, and FTIR spectroscopy. Specific surface area and was determined from measured nitrogen  desorption/desorption isotherms. Activated carbon was obtained by pyrolytic carbonization of alginate hydrogel in nitrogen atmosphere and activation with KOH. The material was combined with synthesized NiMn2O4 nanopowder and tested as supercapacitor electrode. The second alternative was incorporating NiMn2O4 powder into alginate hydrogel, followed by pyrolysis in nitrogen atmosphere to obtain a NiMn2O4 -activatedcarbon composite. The obtained materials were electrochemically characterized with cyclic voltammetry (LV) and galvanostatic chronopotentiometry to get galvanostatic charge-discharge curves. We calculated high specific capacitance values ranging to several hundred F/g, showing our hybrid material is a promising electrode in a supercapacitor system.
PB  - Krakow : Agencja Reklamowa EURO GRAPHIC
PB  - Krakow : Polskie Towarzystwo Ceramiczne
C3  - Abstract Book - Ceramics in Europe 2022, 10-14 July, 2022, Krakow
T1  - Alginate-derived activated carbon hybridized with NiMn2O4 for use in supercapacitors
SP  - 404
UR  - https://hdl.handle.net/21.15107/rcub_cer_6765
ER  - 

@conference{
author = "Dojčinović, Milena and Vasiljević, Zorka Z and Tadic, Nenad and Krstić, Jugoslav and Nikolić, Maria Vesna",
year = "2022",
abstract = "Transition metal oxides (TMOs) are promising materials because of their specific properties enabling their application in energy solutions, such as their pseudocapacitive behavior enabling utilization as electrode materials in supercapacitors. Activated carbon is a material well known as an electric double layer capacitor (EDLC). Bringing together the two different capacitor materials- TMOs as pseudocapacitors and carbon materials as EDL capacitors is the goal for generating future generation supercapacitors. Nickel manganite is a material of interest because of various oxidation states of manganese which provide its reactivity in oxidoreduction reactions, enhancing the pseudocapacitive behavior. Herein, we synthesized nano-sized nickel manganite by a sol-gel combustion synthesis process using glycine as fuel and subsequent calcination process. The structure and morphology of synthesized material was investigated via XRD, FESEM, and FTIR spectroscopy. Specific surface area and was determined from measured nitrogen  desorption/desorption isotherms. Activated carbon was obtained by pyrolytic carbonization of alginate hydrogel in nitrogen atmosphere and activation with KOH. The material was combined with synthesized NiMn2O4 nanopowder and tested as supercapacitor electrode. The second alternative was incorporating NiMn2O4 powder into alginate hydrogel, followed by pyrolysis in nitrogen atmosphere to obtain a NiMn2O4 -activatedcarbon composite. The obtained materials were electrochemically characterized with cyclic voltammetry (LV) and galvanostatic chronopotentiometry to get galvanostatic charge-discharge curves. We calculated high specific capacitance values ranging to several hundred F/g, showing our hybrid material is a promising electrode in a supercapacitor system.",
publisher = "Krakow : Agencja Reklamowa EURO GRAPHIC, Krakow : Polskie Towarzystwo Ceramiczne",
journal = "Abstract Book - Ceramics in Europe 2022, 10-14 July, 2022, Krakow",
title = "Alginate-derived activated carbon hybridized with NiMn2O4 for use in supercapacitors",
pages = "404",
url = "https://hdl.handle.net/21.15107/rcub_cer_6765"
}

Dojčinović, M., Vasiljević, Z. Z., Tadic, N., Krstić, J.,& Nikolić, M. V.. (2022). Alginate-derived activated carbon hybridized with NiMn2O4 for use in supercapacitors. in Abstract Book - Ceramics in Europe 2022, 10-14 July, 2022, Krakow
Krakow : Agencja Reklamowa EURO GRAPHIC., 404.
https://hdl.handle.net/21.15107/rcub_cer_6765

Dojčinović M, Vasiljević ZZ, Tadic N, Krstić J, Nikolić MV. Alginate-derived activated carbon hybridized with NiMn2O4 for use in supercapacitors. in Abstract Book - Ceramics in Europe 2022, 10-14 July, 2022, Krakow. 2022;:404.
https://hdl.handle.net/21.15107/rcub_cer_6765 .

Dojčinović, Milena, Vasiljević, Zorka Z, Tadic, Nenad, Krstić, Jugoslav, Nikolić, Maria Vesna, "Alginate-derived activated carbon hybridized with NiMn2O4 for use in supercapacitors" in Abstract Book - Ceramics in Europe 2022, 10-14 July, 2022, Krakow (2022):404,
https://hdl.handle.net/21.15107/rcub_cer_6765 .

TY  - JOUR
AU  - Nikolić, Maria Vesna
AU  - Krstić, Jugoslav
AU  - Labus, Nebojša
AU  - Luković, Miloljub
AU  - Dojčinović, Milena P.
AU  - Radovanović, Milan
AU  - Tadić, Nenad
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3573
AB  - Iron manganite (FeMnO3) powder with a cubic (bixbyite,
−
Ia3) crystal structure was obtained by a solid state
reaction. Thick film paste (powder+organic vehicles) was screen printed on alumina substrate with test interdigitated
PdAg electrodes. Significant porosity (60.6%) composed of macropores (larger than 100 nm) was
determined by Hg porosimetry, changing only slightly from the first extrusion run indicating a stable pore
system. Hg porosimetry evaluation of thick film samples enabled estimation of true textural parameters of the
thick film compared to powder. Impedance response of the thick film sensor was monitored in a humidity
chamber in the relative humidity (RH) range 30–90%, at room temperature (25 °C) and frequency range from
42 Hz to 1 MHz. At 100 Hz the impedance reduced from 10.41 MΩ for RH 30% to 0.68 MΩ for RH 90%. Analysis
of complex impedance using an equivalent circuit showed the dominant influence of grain boundaries. The
sensor response and recovery was fast (several seconds) and a relatively low hysteresis value of 2.8% was
obtained.
PB  - Elsevier
T2  - Materials Science and Engineering B: Solid-State Materials for Advanced Technology
T1  - Structural, morphological and textural properties of iron manganite (FeMnO3) thick films applied for humidity sensing
VL  - 257
SP  - 114547
DO  - 10.1016/j.mseb.2020.114547
ER  - 

@article{
author = "Nikolić, Maria Vesna and Krstić, Jugoslav and Labus, Nebojša and Luković, Miloljub and Dojčinović, Milena P. and Radovanović, Milan and Tadić, Nenad",
year = "2020",
abstract = "Iron manganite (FeMnO3) powder with a cubic (bixbyite,
−
Ia3) crystal structure was obtained by a solid state
reaction. Thick film paste (powder+organic vehicles) was screen printed on alumina substrate with test interdigitated
PdAg electrodes. Significant porosity (60.6%) composed of macropores (larger than 100 nm) was
determined by Hg porosimetry, changing only slightly from the first extrusion run indicating a stable pore
system. Hg porosimetry evaluation of thick film samples enabled estimation of true textural parameters of the
thick film compared to powder. Impedance response of the thick film sensor was monitored in a humidity
chamber in the relative humidity (RH) range 30–90%, at room temperature (25 °C) and frequency range from
42 Hz to 1 MHz. At 100 Hz the impedance reduced from 10.41 MΩ for RH 30% to 0.68 MΩ for RH 90%. Analysis
of complex impedance using an equivalent circuit showed the dominant influence of grain boundaries. The
sensor response and recovery was fast (several seconds) and a relatively low hysteresis value of 2.8% was
obtained.",
publisher = "Elsevier",
journal = "Materials Science and Engineering B: Solid-State Materials for Advanced Technology",
title = "Structural, morphological and textural properties of iron manganite (FeMnO3) thick films applied for humidity sensing",
volume = "257",
pages = "114547",
doi = "10.1016/j.mseb.2020.114547"
}

Nikolić, M. V., Krstić, J., Labus, N., Luković, M., Dojčinović, M. P., Radovanović, M.,& Tadić, N.. (2020). Structural, morphological and textural properties of iron manganite (FeMnO3) thick films applied for humidity sensing. in Materials Science and Engineering B: Solid-State Materials for Advanced Technology
Elsevier., 257, 114547.
https://doi.org/10.1016/j.mseb.2020.114547

Nikolić MV, Krstić J, Labus N, Luković M, Dojčinović MP, Radovanović M, Tadić N. Structural, morphological and textural properties of iron manganite (FeMnO3) thick films applied for humidity sensing. in Materials Science and Engineering B: Solid-State Materials for Advanced Technology. 2020;257:114547.
doi:10.1016/j.mseb.2020.114547 .

Nikolić, Maria Vesna, Krstić, Jugoslav, Labus, Nebojša, Luković, Miloljub, Dojčinović, Milena P., Radovanović, Milan, Tadić, Nenad, "Structural, morphological and textural properties of iron manganite (FeMnO3) thick films applied for humidity sensing" in Materials Science and Engineering B: Solid-State Materials for Advanced Technology, 257 (2020):114547,
https://doi.org/10.1016/j.mseb.2020.114547 . .

TY  - JOUR
AU  - Vasiljević, Zorka
AU  - Dojčinović, Milena P.
AU  - Krstić, Jugoslav
AU  - Ribić, Vesna
AU  - Tadić, Nenad
AU  - Ognjanović, Miloš
AU  - Auger, Sandrine
AU  - Vidić, Jasmina
AU  - Nikolić, Maria Vesna
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3572
AB  - Nanocrystalline iron manganite powder was synthesized using the sol–gel combustion process, with
glycine as fuel. It was further calcined at 900  C for 8 h, resulting in the formation of a loose cubic
FeMnO3 powder with a small specific surface area, net-like structure and plate-like particles as
confirmed by XRD, N2 physisorption, FESEM and TEM analyses. The metal ion release was studied by
ICP-OES and showed that less than 10 ppb of Fe or Mn ions were released by leaching in water, but
0.36 ppm Fe and 3.69 ppm Mn was found in LB (Luria–Bertani) bacterial medium. The generation of
reactive oxygen species (ROS) was monitored in distilled water and bacterial medium and showed that
FeMnO3 particles do not generate O2c
  ions with or without UV irradiation, but synthesize H2O2 and
show an antioxidative effect. Besides the higher stability of FeMnO3 particles in aqueous solution they
showed an inhibitory effect on Bacillus subtilis growth in LB medium even at low concentrations
(0.01 mg ml 1), but not in BHI medium even at 1 mg ml 1. This study points out that the mechanism of
antibacterial action of engineered metal oxides needs continued investigation and specific experimental
controls
PB  - London : Royal Society of Chemistry
T2  - RSC Advances
T1  - Synthesis and antibacterial activity of iron manganite (FeMnO3) particles against the environmental bacterium Bacillus subtilis
VL  - 10
IS  - 23
SP  - 13879
EP  - 13888
DO  - 10.1039/d0ra01809k
ER  - 

@article{
author = "Vasiljević, Zorka and Dojčinović, Milena P. and Krstić, Jugoslav and Ribić, Vesna and Tadić, Nenad and Ognjanović, Miloš and Auger, Sandrine and Vidić, Jasmina and Nikolić, Maria Vesna",
year = "2020",
abstract = "Nanocrystalline iron manganite powder was synthesized using the sol–gel combustion process, with
glycine as fuel. It was further calcined at 900  C for 8 h, resulting in the formation of a loose cubic
FeMnO3 powder with a small specific surface area, net-like structure and plate-like particles as
confirmed by XRD, N2 physisorption, FESEM and TEM analyses. The metal ion release was studied by
ICP-OES and showed that less than 10 ppb of Fe or Mn ions were released by leaching in water, but
0.36 ppm Fe and 3.69 ppm Mn was found in LB (Luria–Bertani) bacterial medium. The generation of
reactive oxygen species (ROS) was monitored in distilled water and bacterial medium and showed that
FeMnO3 particles do not generate O2c
  ions with or without UV irradiation, but synthesize H2O2 and
show an antioxidative effect. Besides the higher stability of FeMnO3 particles in aqueous solution they
showed an inhibitory effect on Bacillus subtilis growth in LB medium even at low concentrations
(0.01 mg ml 1), but not in BHI medium even at 1 mg ml 1. This study points out that the mechanism of
antibacterial action of engineered metal oxides needs continued investigation and specific experimental
controls",
publisher = "London : Royal Society of Chemistry",
journal = "RSC Advances",
title = "Synthesis and antibacterial activity of iron manganite (FeMnO3) particles against the environmental bacterium Bacillus subtilis",
volume = "10",
number = "23",
pages = "13879-13888",
doi = "10.1039/d0ra01809k"
}

Vasiljević, Z., Dojčinović, M. P., Krstić, J., Ribić, V., Tadić, N., Ognjanović, M., Auger, S., Vidić, J.,& Nikolić, M. V.. (2020). Synthesis and antibacterial activity of iron manganite (FeMnO3) particles against the environmental bacterium Bacillus subtilis. in RSC Advances
London : Royal Society of Chemistry., 10(23), 13879-13888.
https://doi.org/10.1039/d0ra01809k

Vasiljević Z, Dojčinović MP, Krstić J, Ribić V, Tadić N, Ognjanović M, Auger S, Vidić J, Nikolić MV. Synthesis and antibacterial activity of iron manganite (FeMnO3) particles against the environmental bacterium Bacillus subtilis. in RSC Advances. 2020;10(23):13879-13888.
doi:10.1039/d0ra01809k .

Vasiljević, Zorka, Dojčinović, Milena P., Krstić, Jugoslav, Ribić, Vesna, Tadić, Nenad, Ognjanović, Miloš, Auger, Sandrine, Vidić, Jasmina, Nikolić, Maria Vesna, "Synthesis and antibacterial activity of iron manganite (FeMnO3) particles against the environmental bacterium Bacillus subtilis" in RSC Advances, 10, no. 23 (2020):13879-13888,
https://doi.org/10.1039/d0ra01809k . .

TY  - JOUR
AU  - Nikolić, Maria Vesna
AU  - Krstić, Jugoslav
AU  - Labus, Nebojša
AU  - Luković, Miloljub
AU  - Dojčinović, Milena P.
AU  - Radovanović, Milan
AU  - Tadić, Nenad
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4278
AB  - Iron manganite (FeMnO3) powder with a cubic (bixbyite,−Ia3) crystal structure was obtained by a solid statereaction. Thick film paste (powder+organic vehicles) was screen printed on alumina substrate with test interdigitatedPdAg electrodes. Significant porosity (60.6%) composed of macropores (larger than 100 nm) wasdetermined by Hg porosimetry, changing only slightly from the first extrusion run indicating a stable poresystem. Hg porosimetry evaluation of thick film samples enabled estimation of true textural parameters of thethick film compared to powder. Impedance response of the thick film sensor was monitored in a humiditychamber in the relative humidity (RH) range 30–90%, at room temperature (25 °C) and frequency range from42 Hz to 1 MHz. At 100 Hz the impedance reduced from 10.41 MΩ for RH 30% to 0.68 MΩ for RH 90%. Analysisof complex impedance using an equivalent circuit showed the dominant influence of grain boundaries. Thesensor response and recovery was fast (several seconds) and a relatively low hysteresis value of 2.8% wasobtained.
PB  - Elsevier
T2  - Materials Science and Engineering B: Solid-State Materials for Advanced Technology
T1  - Structural, morphological and textural properties of iron manganite (FeMnO3) thick films applied for humidity sensing
VL  - 257
SP  - 114547
DO  - 10.1016/j.mseb.2020.114547
ER  - 

@article{
author = "Nikolić, Maria Vesna and Krstić, Jugoslav and Labus, Nebojša and Luković, Miloljub and Dojčinović, Milena P. and Radovanović, Milan and Tadić, Nenad",
year = "2020",
abstract = "Iron manganite (FeMnO3) powder with a cubic (bixbyite,−Ia3) crystal structure was obtained by a solid statereaction. Thick film paste (powder+organic vehicles) was screen printed on alumina substrate with test interdigitatedPdAg electrodes. Significant porosity (60.6%) composed of macropores (larger than 100 nm) wasdetermined by Hg porosimetry, changing only slightly from the first extrusion run indicating a stable poresystem. Hg porosimetry evaluation of thick film samples enabled estimation of true textural parameters of thethick film compared to powder. Impedance response of the thick film sensor was monitored in a humiditychamber in the relative humidity (RH) range 30–90%, at room temperature (25 °C) and frequency range from42 Hz to 1 MHz. At 100 Hz the impedance reduced from 10.41 MΩ for RH 30% to 0.68 MΩ for RH 90%. Analysisof complex impedance using an equivalent circuit showed the dominant influence of grain boundaries. Thesensor response and recovery was fast (several seconds) and a relatively low hysteresis value of 2.8% wasobtained.",
publisher = "Elsevier",
journal = "Materials Science and Engineering B: Solid-State Materials for Advanced Technology",
title = "Structural, morphological and textural properties of iron manganite (FeMnO3) thick films applied for humidity sensing",
volume = "257",
pages = "114547",
doi = "10.1016/j.mseb.2020.114547"
}

Nikolić, M. V., Krstić, J., Labus, N., Luković, M., Dojčinović, M. P., Radovanović, M.,& Tadić, N.. (2020). Structural, morphological and textural properties of iron manganite (FeMnO3) thick films applied for humidity sensing. in Materials Science and Engineering B: Solid-State Materials for Advanced Technology
Elsevier., 257, 114547.
https://doi.org/10.1016/j.mseb.2020.114547

Nikolić MV, Krstić J, Labus N, Luković M, Dojčinović MP, Radovanović M, Tadić N. Structural, morphological and textural properties of iron manganite (FeMnO3) thick films applied for humidity sensing. in Materials Science and Engineering B: Solid-State Materials for Advanced Technology. 2020;257:114547.
doi:10.1016/j.mseb.2020.114547 .

Nikolić, Maria Vesna, Krstić, Jugoslav, Labus, Nebojša, Luković, Miloljub, Dojčinović, Milena P., Radovanović, Milan, Tadić, Nenad, "Structural, morphological and textural properties of iron manganite (FeMnO3) thick films applied for humidity sensing" in Materials Science and Engineering B: Solid-State Materials for Advanced Technology, 257 (2020):114547,
https://doi.org/10.1016/j.mseb.2020.114547 . .