TY  - JOUR
AU  - Vujković, Milica 
AU  - Etinski, Mihajlo
AU  - Vasić, Borislav
AU  - Kuzmanović, Bojana
AU  - Bajuk-Bogdanović, Danica V.
AU  - Dominko, Robert
AU  - Mentus, Slavko V.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9645
AB  - The high redox activity of polyaniline emeraldine salt (PANI-ES) was revealed in the aqueous solution of Al-salt, which makes this polymer attractive as an electrode material for aqueous aluminum electrochemical storage devices. Its redox behavior in Al(NO3)3, Al(NO3)3+HCl, AlCl3 and HCl was investigated by Cyclic Voltammetry and Chronopotentiometry. While the proton exchange determines PANI's redox behavior in strong acidic solutions, anion doping/dedoping is a more dominant process in less acidic Al-salt solutions. The formation/dissolution of solid-state nitrate complexes is proposed to happen during PANI's redox switching in Al(NO3)3, which causes disappearance and reappearance of grain boundaries, as revealed by AFM. Combined experimental and DFT approaches identify Al-salt as a secondary dopant of protonated PANI-ES (by Lewis acid-base complexation), which causes polaron→bipolaron conversion. The change in the redox mechanism of PANI-ES, caused by the substitution of HCl with Al(NO3)3, did not attenuate its charge storage ability. Moreover, PANI-ES delivers a higher capacitance in Al(NO3)3, amounting to 269 F g−1 at 10 A g−1. Furthermore, the use of Al(NO3)3 results in attenuated electrochemical PANI overoxidation, when compared to HCl, thus providing better capacitance retention upon potentiodynamic cycling. The results open novel perspective of using PANI-based materials for more suitable energy storage devices.
T2  - Journal of Power Sources
T1  - Polyaniline as a charge storage material in an aqueous aluminum-based electrolyte: Can aluminum ions play the role of protons?
VL  - 482
SP  - 228937
DO  - 10.1016/j.jpowsour.2020.228937
ER  - 

@article{
author = "Vujković, Milica  and Etinski, Mihajlo and Vasić, Borislav and Kuzmanović, Bojana and Bajuk-Bogdanović, Danica V. and Dominko, Robert and Mentus, Slavko V.",
year = "2021",
abstract = "The high redox activity of polyaniline emeraldine salt (PANI-ES) was revealed in the aqueous solution of Al-salt, which makes this polymer attractive as an electrode material for aqueous aluminum electrochemical storage devices. Its redox behavior in Al(NO3)3, Al(NO3)3+HCl, AlCl3 and HCl was investigated by Cyclic Voltammetry and Chronopotentiometry. While the proton exchange determines PANI's redox behavior in strong acidic solutions, anion doping/dedoping is a more dominant process in less acidic Al-salt solutions. The formation/dissolution of solid-state nitrate complexes is proposed to happen during PANI's redox switching in Al(NO3)3, which causes disappearance and reappearance of grain boundaries, as revealed by AFM. Combined experimental and DFT approaches identify Al-salt as a secondary dopant of protonated PANI-ES (by Lewis acid-base complexation), which causes polaron→bipolaron conversion. The change in the redox mechanism of PANI-ES, caused by the substitution of HCl with Al(NO3)3, did not attenuate its charge storage ability. Moreover, PANI-ES delivers a higher capacitance in Al(NO3)3, amounting to 269 F g−1 at 10 A g−1. Furthermore, the use of Al(NO3)3 results in attenuated electrochemical PANI overoxidation, when compared to HCl, thus providing better capacitance retention upon potentiodynamic cycling. The results open novel perspective of using PANI-based materials for more suitable energy storage devices.",
journal = "Journal of Power Sources",
title = "Polyaniline as a charge storage material in an aqueous aluminum-based electrolyte: Can aluminum ions play the role of protons?",
volume = "482",
pages = "228937",
doi = "10.1016/j.jpowsour.2020.228937"
}

Vujković, M., Etinski, M., Vasić, B., Kuzmanović, B., Bajuk-Bogdanović, D. V., Dominko, R.,& Mentus, S. V.. (2021). Polyaniline as a charge storage material in an aqueous aluminum-based electrolyte: Can aluminum ions play the role of protons?. in Journal of Power Sources, 482, 228937.
https://doi.org/10.1016/j.jpowsour.2020.228937

Vujković M, Etinski M, Vasić B, Kuzmanović B, Bajuk-Bogdanović DV, Dominko R, Mentus SV. Polyaniline as a charge storage material in an aqueous aluminum-based electrolyte: Can aluminum ions play the role of protons?. in Journal of Power Sources. 2021;482:228937.
doi:10.1016/j.jpowsour.2020.228937 .

Vujković, Milica , Etinski, Mihajlo, Vasić, Borislav, Kuzmanović, Bojana, Bajuk-Bogdanović, Danica V., Dominko, Robert, Mentus, Slavko V., "Polyaniline as a charge storage material in an aqueous aluminum-based electrolyte: Can aluminum ions play the role of protons?" in Journal of Power Sources, 482 (2021):228937,
https://doi.org/10.1016/j.jpowsour.2020.228937 . .

TY  - JOUR
AU  - Savić-Biserčić, Marjetka
AU  - Marjanović, Budimir
AU  - Vasiljević-Nedić, Bojana
AU  - Mentus, Slavko V.
AU  - Zasonska, Beata A.
AU  - Ćirić-Marjanović, Gordana N.
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S1387181118305766
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7969
AB  - Efficient and simple room temperature synthesis of pure phase metal-organic framework MOF-5 has been developed, based on the use of anhydrous zinc acetate, Zn(OAc)2, as a precursor, instead of zinc acetate dihydrate. Crucial influence of water on a reaction pathway was revealed. In order to obtain MOF-5, different amounts of water have been added into the solutions of Zn(OAc)2 in N,N-dimethylformamide (DMF) to prepare in situ zinc acetate hydrates with 0.25, 0.5, and 1.0 mol of water. Commercially available zinc acetate dihydrate was also used as a precursor for comparison. These solutions were mixed at room temperature with the solution of 1,4-benzenedicarboxylic acid in DMF in the absence of any base. Based on XRD, FTIR, and SEM measurements, it was shown that the optimal amount of water for the synthesis of completely pure, crystalline phase MOF-5 is 0.25–0.5 mol of water per one mole of Zn. The reaction systems with 1.0 and 2.0 mol of water per one mole of Zn also led to solids with MOF-5 as the dominant phase, but they also contain small amounts of another phase, formed due to the decomposition (hydrolysis) and/or distortion of the MOF-5 framework in the presence of excess amounts of water. The product synthesized in the system without any added water contains MOF-5 phase in a very small amount, while main phase is zinc 1,4-benzenedicarboxylate and/or zinc hydrogen 1,4-benzenedicarboxylate. Regular cubic submicro/microcrystal morphology exhibited the samples synthesized using 0.5 and 0.25 mol water per one mole of Zn (pure MOF-5), while for the samples synthesized at mole ratios H2O/Zn2+ = 1.0 and 2.0 other particle shapes are also seen. By nitrogen sorption measurements it was found that the highest values of BET specific surface area (1937 m2 g−1), micropore volume (0.83 cm3 g−1), and micropore area (1590 m2 g−1) showed MOF-5 prepared at mole ratio H2O/Zn2+ = 0.5, while the highest yield of MOF-5 is obtained with the theoretical mole ratio H2O/Zn2+ = 0.25. Thermal stability of synthesized materials was investigated by TGA. © 2018 Elsevier Inc.
T2  - Microporous and Mesoporous Materials
T1  - The quest for optimal water quantity in the synthesis of metal-organic framework MOF-5
VL  - 278
SP  - 23
EP  - 29
DO  - 10.1016/j.micromeso.2018.11.005
ER  - 

@article{
author = "Savić-Biserčić, Marjetka and Marjanović, Budimir and Vasiljević-Nedić, Bojana and Mentus, Slavko V. and Zasonska, Beata A. and Ćirić-Marjanović, Gordana N.",
year = "2019",
abstract = "Efficient and simple room temperature synthesis of pure phase metal-organic framework MOF-5 has been developed, based on the use of anhydrous zinc acetate, Zn(OAc)2, as a precursor, instead of zinc acetate dihydrate. Crucial influence of water on a reaction pathway was revealed. In order to obtain MOF-5, different amounts of water have been added into the solutions of Zn(OAc)2 in N,N-dimethylformamide (DMF) to prepare in situ zinc acetate hydrates with 0.25, 0.5, and 1.0 mol of water. Commercially available zinc acetate dihydrate was also used as a precursor for comparison. These solutions were mixed at room temperature with the solution of 1,4-benzenedicarboxylic acid in DMF in the absence of any base. Based on XRD, FTIR, and SEM measurements, it was shown that the optimal amount of water for the synthesis of completely pure, crystalline phase MOF-5 is 0.25–0.5 mol of water per one mole of Zn. The reaction systems with 1.0 and 2.0 mol of water per one mole of Zn also led to solids with MOF-5 as the dominant phase, but they also contain small amounts of another phase, formed due to the decomposition (hydrolysis) and/or distortion of the MOF-5 framework in the presence of excess amounts of water. The product synthesized in the system without any added water contains MOF-5 phase in a very small amount, while main phase is zinc 1,4-benzenedicarboxylate and/or zinc hydrogen 1,4-benzenedicarboxylate. Regular cubic submicro/microcrystal morphology exhibited the samples synthesized using 0.5 and 0.25 mol water per one mole of Zn (pure MOF-5), while for the samples synthesized at mole ratios H2O/Zn2+ = 1.0 and 2.0 other particle shapes are also seen. By nitrogen sorption measurements it was found that the highest values of BET specific surface area (1937 m2 g−1), micropore volume (0.83 cm3 g−1), and micropore area (1590 m2 g−1) showed MOF-5 prepared at mole ratio H2O/Zn2+ = 0.5, while the highest yield of MOF-5 is obtained with the theoretical mole ratio H2O/Zn2+ = 0.25. Thermal stability of synthesized materials was investigated by TGA. © 2018 Elsevier Inc.",
journal = "Microporous and Mesoporous Materials",
title = "The quest for optimal water quantity in the synthesis of metal-organic framework MOF-5",
volume = "278",
pages = "23-29",
doi = "10.1016/j.micromeso.2018.11.005"
}

Savić-Biserčić, M., Marjanović, B., Vasiljević-Nedić, B., Mentus, S. V., Zasonska, B. A.,& Ćirić-Marjanović, G. N.. (2019). The quest for optimal water quantity in the synthesis of metal-organic framework MOF-5. in Microporous and Mesoporous Materials, 278, 23-29.
https://doi.org/10.1016/j.micromeso.2018.11.005

Savić-Biserčić M, Marjanović B, Vasiljević-Nedić B, Mentus SV, Zasonska BA, Ćirić-Marjanović GN. The quest for optimal water quantity in the synthesis of metal-organic framework MOF-5. in Microporous and Mesoporous Materials. 2019;278:23-29.
doi:10.1016/j.micromeso.2018.11.005 .

Savić-Biserčić, Marjetka, Marjanović, Budimir, Vasiljević-Nedić, Bojana, Mentus, Slavko V., Zasonska, Beata A., Ćirić-Marjanović, Gordana N., "The quest for optimal water quantity in the synthesis of metal-organic framework MOF-5" in Microporous and Mesoporous Materials, 278 (2019):23-29,
https://doi.org/10.1016/j.micromeso.2018.11.005 . .

TY  - JOUR
AU  - Kuzmanović, Bojana
AU  - Vujković, Milica
AU  - Tomić, Nataša M.
AU  - Bajuk-Bogdanović, Danica V.
AU  - Lazović, Vladimir M.
AU  - Šljukić, Biljana
AU  - Ivanović, Nenad
AU  - Mentus, Slavko V.
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0013468619305584
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8135
AB  - Cerium oxide (CeO 2-δ ) ultrafine nanoparticles, with the lower (CeO 2-δ -HT) and higher (CeO 2-δ -SS) fraction of oxygen vacancies, were used as anchoring sites for the polymerization of aniline in acidic medium. As a result, polyaniline-emeraldine salt (PANI-ES)-based composites (PANI-ES@CeO 2-δ -HT and PANI-ES@CeO 2-δ -SS) were obtained. The interaction between CeO 2-δ and PANI was examined by FTIR and Raman spectroscopy. The PANI polymerization is initiated via electrostatic interaction of anilinium cation and Cl − ions (adsorbed at the protonated hydroxyl groups of CeO 2-δ ), and proceeds with hydrogen and nitrogen interaction with oxide nanoparticles. Tailoring the oxygen vacancy population of oxide offers the possibility to control the type of PANI-cerium oxide interaction, and consequently structural, electrical, thermal, electronic and charge storage properties of composite. A high capacitance of synthesized materials, reaching ∼294 F g −1 (PANI-ES), ∼299 F g −1 (PANI-ES@CeO 2-δ -HT) and ∼314 F g −1 (PANI-ES@CeO 2-δ -SS), was measured in 1 M HCl, at a common scan rate of 20 mV s −1 . The high adhesion of PANI with cerium oxide prevents the oxide from its slow dissolution in 1MHCl thus providing the stability of this composite in an acidic solution. The rate of electrochemical oxidation of emeraldine salt into pernigraniline was also found to depend on CeO 2-δ characteristics. © 2019 Elsevier Ltd
T2  - Electrochimica Acta
T1  - The influence of oxygen vacancy concentration in nanodispersed non-stoichiometric CeO2-δ oxides on the physico-chemical properties of conducting polyaniline/CeO2 composites
VL  - 306
SP  - 506
EP  - 515
DO  - 10.1016/j.electacta.2019.03.135
ER  - 

@article{
author = "Kuzmanović, Bojana and Vujković, Milica and Tomić, Nataša M. and Bajuk-Bogdanović, Danica V. and Lazović, Vladimir M. and Šljukić, Biljana and Ivanović, Nenad and Mentus, Slavko V.",
year = "2019",
abstract = "Cerium oxide (CeO 2-δ ) ultrafine nanoparticles, with the lower (CeO 2-δ -HT) and higher (CeO 2-δ -SS) fraction of oxygen vacancies, were used as anchoring sites for the polymerization of aniline in acidic medium. As a result, polyaniline-emeraldine salt (PANI-ES)-based composites (PANI-ES@CeO 2-δ -HT and PANI-ES@CeO 2-δ -SS) were obtained. The interaction between CeO 2-δ and PANI was examined by FTIR and Raman spectroscopy. The PANI polymerization is initiated via electrostatic interaction of anilinium cation and Cl − ions (adsorbed at the protonated hydroxyl groups of CeO 2-δ ), and proceeds with hydrogen and nitrogen interaction with oxide nanoparticles. Tailoring the oxygen vacancy population of oxide offers the possibility to control the type of PANI-cerium oxide interaction, and consequently structural, electrical, thermal, electronic and charge storage properties of composite. A high capacitance of synthesized materials, reaching ∼294 F g −1 (PANI-ES), ∼299 F g −1 (PANI-ES@CeO 2-δ -HT) and ∼314 F g −1 (PANI-ES@CeO 2-δ -SS), was measured in 1 M HCl, at a common scan rate of 20 mV s −1 . The high adhesion of PANI with cerium oxide prevents the oxide from its slow dissolution in 1MHCl thus providing the stability of this composite in an acidic solution. The rate of electrochemical oxidation of emeraldine salt into pernigraniline was also found to depend on CeO 2-δ characteristics. © 2019 Elsevier Ltd",
journal = "Electrochimica Acta",
title = "The influence of oxygen vacancy concentration in nanodispersed non-stoichiometric CeO2-δ oxides on the physico-chemical properties of conducting polyaniline/CeO2 composites",
volume = "306",
pages = "506-515",
doi = "10.1016/j.electacta.2019.03.135"
}

Kuzmanović, B., Vujković, M., Tomić, N. M., Bajuk-Bogdanović, D. V., Lazović, V. M., Šljukić, B., Ivanović, N.,& Mentus, S. V.. (2019). The influence of oxygen vacancy concentration in nanodispersed non-stoichiometric CeO2-δ oxides on the physico-chemical properties of conducting polyaniline/CeO2 composites. in Electrochimica Acta, 306, 506-515.
https://doi.org/10.1016/j.electacta.2019.03.135

Kuzmanović B, Vujković M, Tomić NM, Bajuk-Bogdanović DV, Lazović VM, Šljukić B, Ivanović N, Mentus SV. The influence of oxygen vacancy concentration in nanodispersed non-stoichiometric CeO2-δ oxides on the physico-chemical properties of conducting polyaniline/CeO2 composites. in Electrochimica Acta. 2019;306:506-515.
doi:10.1016/j.electacta.2019.03.135 .

Kuzmanović, Bojana, Vujković, Milica, Tomić, Nataša M., Bajuk-Bogdanović, Danica V., Lazović, Vladimir M., Šljukić, Biljana, Ivanović, Nenad, Mentus, Slavko V., "The influence of oxygen vacancy concentration in nanodispersed non-stoichiometric CeO2-δ oxides on the physico-chemical properties of conducting polyaniline/CeO2 composites" in Electrochimica Acta, 306 (2019):506-515,
https://doi.org/10.1016/j.electacta.2019.03.135 . .

TY  - JOUR
AU  - Georgijević, Radovan
AU  - Vujković, Milica
AU  - Gutić, Sanjin J.
AU  - Aliefendić, Meho
AU  - Jugović, Dragana
AU  - Mitrić, Miodrag
AU  - Đokić, Veljko R.
AU  - Mentus, Slavko V.
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7936
AB  - To contribute to the knowledge on the influence of synthesis procedure on the intercalation kinetics of lithium ions into phospho-olivines, LiFePO4/C composite samples (LFPC) were synthesized in two ways, the first one in a sol-gel procedure (SG), and the other in a solid-state reaction (SS). The X-ray diffractograms (XRD) of both samples overlapped with that of pure LiFePO4, taken from the crystallographic database. Scanning electron microscopy pictures indicated the high degree of interparticle sintering, which caused a considerable agglomerate growth. The results of potentiodynamic measurements in aqueous LiNO3 solution revealed that for SS sample, three times higher initial capacity from that of SG one, (amounting to 74 mAh g−1 at 5 mV s−1). However, capacity fade on rising scan rate is much more expressed for SS sample than for SG one. We suggest that a different degree of material utilization due to the incomplete coverage of olivine particles by carbon explains this difference. The technique of separation of diffusion and capacitance currents was applied in a kinetic analysis, but it was shown to be inappropriate. We suggest the inapplicability of classic CV theory to the intercalation system accompanied by phase transition. Instead, a model of ohmic resistance determination of process kinetics was considered. LFPC-SS sample delivers three times larger capacity in LiNO3, amounting to 74 mAh g−1 at 1 mV s−1.
T2  - Journal of Alloys and Compounds
T1  - The influence of synthesis conditions on the redox behaviour of LiFePO4 in aqueous solution
VL  - 776
SP  - 475
EP  - 485
DO  - 10.1016/j.jallcom.2018.10.246
ER  - 

@article{
author = "Georgijević, Radovan and Vujković, Milica and Gutić, Sanjin J. and Aliefendić, Meho and Jugović, Dragana and Mitrić, Miodrag and Đokić, Veljko R. and Mentus, Slavko V.",
year = "2019",
abstract = "To contribute to the knowledge on the influence of synthesis procedure on the intercalation kinetics of lithium ions into phospho-olivines, LiFePO4/C composite samples (LFPC) were synthesized in two ways, the first one in a sol-gel procedure (SG), and the other in a solid-state reaction (SS). The X-ray diffractograms (XRD) of both samples overlapped with that of pure LiFePO4, taken from the crystallographic database. Scanning electron microscopy pictures indicated the high degree of interparticle sintering, which caused a considerable agglomerate growth. The results of potentiodynamic measurements in aqueous LiNO3 solution revealed that for SS sample, three times higher initial capacity from that of SG one, (amounting to 74 mAh g−1 at 5 mV s−1). However, capacity fade on rising scan rate is much more expressed for SS sample than for SG one. We suggest that a different degree of material utilization due to the incomplete coverage of olivine particles by carbon explains this difference. The technique of separation of diffusion and capacitance currents was applied in a kinetic analysis, but it was shown to be inappropriate. We suggest the inapplicability of classic CV theory to the intercalation system accompanied by phase transition. Instead, a model of ohmic resistance determination of process kinetics was considered. LFPC-SS sample delivers three times larger capacity in LiNO3, amounting to 74 mAh g−1 at 1 mV s−1.",
journal = "Journal of Alloys and Compounds",
title = "The influence of synthesis conditions on the redox behaviour of LiFePO4 in aqueous solution",
volume = "776",
pages = "475-485",
doi = "10.1016/j.jallcom.2018.10.246"
}

Georgijević, R., Vujković, M., Gutić, S. J., Aliefendić, M., Jugović, D., Mitrić, M., Đokić, V. R.,& Mentus, S. V.. (2019). The influence of synthesis conditions on the redox behaviour of LiFePO4 in aqueous solution. in Journal of Alloys and Compounds, 776, 475-485.
https://doi.org/10.1016/j.jallcom.2018.10.246

Georgijević R, Vujković M, Gutić SJ, Aliefendić M, Jugović D, Mitrić M, Đokić VR, Mentus SV. The influence of synthesis conditions on the redox behaviour of LiFePO4 in aqueous solution. in Journal of Alloys and Compounds. 2019;776:475-485.
doi:10.1016/j.jallcom.2018.10.246 .

Georgijević, Radovan, Vujković, Milica, Gutić, Sanjin J., Aliefendić, Meho, Jugović, Dragana, Mitrić, Miodrag, Đokić, Veljko R., Mentus, Slavko V., "The influence of synthesis conditions on the redox behaviour of LiFePO4 in aqueous solution" in Journal of Alloys and Compounds, 776 (2019):475-485,
https://doi.org/10.1016/j.jallcom.2018.10.246 . .

TY  - JOUR
AU  - Gavrilov, Nemanja M.
AU  - Momčilović, Milan Z.
AU  - Dobrota, Ana S.
AU  - Stanković, Dalibor M.
AU  - Jokić, Bojan M.
AU  - Babić, Biljana M.
AU  - Skorodumova, Natalia V.
AU  - Mentus, Slavko V.
AU  - Pašti, Igor A.
PY  - 2018
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0257897218305838
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7727
AB  - The incorporation of trace amounts (<0.2%) of Co and Ni noticeably enhanced the catalytic activity of nitrogen-free ordered mesoporous carbon (OMC) towards oxygen reduction reaction (ORR). (Co,Ni)-doped OMCs were characterized by N2-adsorption measurements, X-ray powder diffraction, field emission scanning electron microscopy and Raman spectroscopy methods, and their ORR activity was estimated by voltammetry on rotating disk electrode in acidic and alkaline media. (Co,Ni)-doped OMCs show modest activities in acidic media, while the catalytic activity in alkaline media is rather high. The measured activities are compared to the Pt-based and Pt-free ORR catalysts reported in the literature. The number of electrons consumed per O2in metal-doped OMCs was found to vary between 2 and 4, which is advantageous in comparison to metal-free OMC. Also, the mass activities of metal-doped OMCs were found to be up to 2.5 times higher compared to that of metal-free OMC. We suggest that the ORR activity is governed by a balance between (i) textural properties, which determine the electrochemically accessible surface of the catalyst and which are influenced by the addition of a metal precursor, and (ii) novel active sites formed upon the introduction of metals into the carbon structure. In particular, our Density Functional Theory calculations suggest that Co and Ni atoms embedded into the single vacancies of graphene can activate the O2molecule and contribute to the decomposition of peroxide.
T2  - Surface and Coatings Technology
T1  - A study of ordered mesoporous carbon doped with Co and Ni as a catalyst of oxygen reduction reaction in both alkaline and acidic media
VL  - 349
SP  - 511
EP  - 521
DO  - 10.1016/j.surfcoat.2018.06.008
ER  - 

@article{
author = "Gavrilov, Nemanja M. and Momčilović, Milan Z. and Dobrota, Ana S. and Stanković, Dalibor M. and Jokić, Bojan M. and Babić, Biljana M. and Skorodumova, Natalia V. and Mentus, Slavko V. and Pašti, Igor A.",
year = "2018",
abstract = "The incorporation of trace amounts (<0.2%) of Co and Ni noticeably enhanced the catalytic activity of nitrogen-free ordered mesoporous carbon (OMC) towards oxygen reduction reaction (ORR). (Co,Ni)-doped OMCs were characterized by N2-adsorption measurements, X-ray powder diffraction, field emission scanning electron microscopy and Raman spectroscopy methods, and their ORR activity was estimated by voltammetry on rotating disk electrode in acidic and alkaline media. (Co,Ni)-doped OMCs show modest activities in acidic media, while the catalytic activity in alkaline media is rather high. The measured activities are compared to the Pt-based and Pt-free ORR catalysts reported in the literature. The number of electrons consumed per O2in metal-doped OMCs was found to vary between 2 and 4, which is advantageous in comparison to metal-free OMC. Also, the mass activities of metal-doped OMCs were found to be up to 2.5 times higher compared to that of metal-free OMC. We suggest that the ORR activity is governed by a balance between (i) textural properties, which determine the electrochemically accessible surface of the catalyst and which are influenced by the addition of a metal precursor, and (ii) novel active sites formed upon the introduction of metals into the carbon structure. In particular, our Density Functional Theory calculations suggest that Co and Ni atoms embedded into the single vacancies of graphene can activate the O2molecule and contribute to the decomposition of peroxide.",
journal = "Surface and Coatings Technology",
title = "A study of ordered mesoporous carbon doped with Co and Ni as a catalyst of oxygen reduction reaction in both alkaline and acidic media",
volume = "349",
pages = "511-521",
doi = "10.1016/j.surfcoat.2018.06.008"
}

Gavrilov, N. M., Momčilović, M. Z., Dobrota, A. S., Stanković, D. M., Jokić, B. M., Babić, B. M., Skorodumova, N. V., Mentus, S. V.,& Pašti, I. A.. (2018). A study of ordered mesoporous carbon doped with Co and Ni as a catalyst of oxygen reduction reaction in both alkaline and acidic media. in Surface and Coatings Technology, 349, 511-521.
https://doi.org/10.1016/j.surfcoat.2018.06.008

Gavrilov NM, Momčilović MZ, Dobrota AS, Stanković DM, Jokić BM, Babić BM, Skorodumova NV, Mentus SV, Pašti IA. A study of ordered mesoporous carbon doped with Co and Ni as a catalyst of oxygen reduction reaction in both alkaline and acidic media. in Surface and Coatings Technology. 2018;349:511-521.
doi:10.1016/j.surfcoat.2018.06.008 .

Gavrilov, Nemanja M., Momčilović, Milan Z., Dobrota, Ana S., Stanković, Dalibor M., Jokić, Bojan M., Babić, Biljana M., Skorodumova, Natalia V., Mentus, Slavko V., Pašti, Igor A., "A study of ordered mesoporous carbon doped with Co and Ni as a catalyst of oxygen reduction reaction in both alkaline and acidic media" in Surface and Coatings Technology, 349 (2018):511-521,
https://doi.org/10.1016/j.surfcoat.2018.06.008 . .

TY  - JOUR
AU  - Gutić, Sanjin J.
AU  - Kozlica, Dževad K.
AU  - Korać, Fehim
AU  - Bajuk-Bogdanović, Danica V.
AU  - Mitrić, Miodrag
AU  - Mirsky, Vladimir M.
AU  - Mentus, Slavko V.
AU  - Pašti, Igor A.
PY  - 2018
UR  - http://xlink.rsc.org/?DOI=C8CP03631D
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7877
AB  - The increasing energy demands of modern society require a deep understanding of the properties of energy storage materials, as well as the tuning of their performance. We show that the capacitance of graphene oxide (GO) can be precisely tuned using a simple electrochemical reduction route. In situ resistance measurements, in combination with cyclic voltammetry measurements and Raman spectroscopy, have shown that upon reduction GO is irreversibly deoxygenated, which is further accompanied by structural ordering and an increase in electrical conductivity. The capacitance is maximized when the concentration of oxygen functional groups is properly balanced with the conductivity. Any further reduction and deoxygenation leads to a gradual loss of capacitance. The observed trend is independent of the preparation route and the exact chemical and structural properties of GO. It is proposed that an improvement in the capacitive properties of any GO can be achieved by optimization of its reduction conditions.
T2  - Physical Chemistry Chemical Physics
T1  - Electrochemical tuning of capacitive response of graphene oxide
VL  - 20
IS  - 35
SP  - 22698
EP  - 22709
DO  - 10.1039/C8CP03631D
ER  - 

@article{
author = "Gutić, Sanjin J. and Kozlica, Dževad K. and Korać, Fehim and Bajuk-Bogdanović, Danica V. and Mitrić, Miodrag and Mirsky, Vladimir M. and Mentus, Slavko V. and Pašti, Igor A.",
year = "2018",
abstract = "The increasing energy demands of modern society require a deep understanding of the properties of energy storage materials, as well as the tuning of their performance. We show that the capacitance of graphene oxide (GO) can be precisely tuned using a simple electrochemical reduction route. In situ resistance measurements, in combination with cyclic voltammetry measurements and Raman spectroscopy, have shown that upon reduction GO is irreversibly deoxygenated, which is further accompanied by structural ordering and an increase in electrical conductivity. The capacitance is maximized when the concentration of oxygen functional groups is properly balanced with the conductivity. Any further reduction and deoxygenation leads to a gradual loss of capacitance. The observed trend is independent of the preparation route and the exact chemical and structural properties of GO. It is proposed that an improvement in the capacitive properties of any GO can be achieved by optimization of its reduction conditions.",
journal = "Physical Chemistry Chemical Physics",
title = "Electrochemical tuning of capacitive response of graphene oxide",
volume = "20",
number = "35",
pages = "22698-22709",
doi = "10.1039/C8CP03631D"
}

Gutić, S. J., Kozlica, D. K., Korać, F., Bajuk-Bogdanović, D. V., Mitrić, M., Mirsky, V. M., Mentus, S. V.,& Pašti, I. A.. (2018). Electrochemical tuning of capacitive response of graphene oxide. in Physical Chemistry Chemical Physics, 20(35), 22698-22709.
https://doi.org/10.1039/C8CP03631D

Gutić SJ, Kozlica DK, Korać F, Bajuk-Bogdanović DV, Mitrić M, Mirsky VM, Mentus SV, Pašti IA. Electrochemical tuning of capacitive response of graphene oxide. in Physical Chemistry Chemical Physics. 2018;20(35):22698-22709.
doi:10.1039/C8CP03631D .

Gutić, Sanjin J., Kozlica, Dževad K., Korać, Fehim, Bajuk-Bogdanović, Danica V., Mitrić, Miodrag, Mirsky, Vladimir M., Mentus, Slavko V., Pašti, Igor A., "Electrochemical tuning of capacitive response of graphene oxide" in Physical Chemistry Chemical Physics, 20, no. 35 (2018):22698-22709,
https://doi.org/10.1039/C8CP03631D . .

TY  - JOUR
AU  - Gutić, Sanjin J.
AU  - Kozlica, Dževad K.
AU  - Korać, Fehim
AU  - Bajuk-Bogdanović, Danica V.
AU  - Mitrić, Miodrag
AU  - Mirsky, Vladimir M.
AU  - Mentus, Slavko V.
AU  - Pašti, Igor A.
PY  - 2018
UR  - http://xlink.rsc.org/?DOI=C8CP03631D
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7887
AB  - The increasing energy demands of modern society require a deep understanding of the properties of energy storage materials, as well as the tuning of their performance. We show that the capacitance of graphene oxide (GO) can be precisely tuned using a simple electrochemical reduction route. In situ resistance measurements, in combination with cyclic voltammetry measurements and Raman spectroscopy, have shown that upon reduction GO is irreversibly deoxygenated, which is further accompanied by structural ordering and an increase in electrical conductivity. The capacitance is maximized when the concentration of oxygen functional groups is properly balanced with the conductivity. Any further reduction and deoxygenation leads to a gradual loss of capacitance. The observed trend is independent of the preparation route and the exact chemical and structural properties of GO. It is proposed that an improvement in the capacitive properties of any GO can be achieved by optimization of its reduction conditions.
T2  - Physical Chemistry Chemical Physics
T1  - Electrochemical tuning of capacitive response of graphene oxide
VL  - 20
IS  - 35
SP  - 22698
EP  - 22709
DO  - 10.1039/C8CP03631D
ER  - 

@article{
author = "Gutić, Sanjin J. and Kozlica, Dževad K. and Korać, Fehim and Bajuk-Bogdanović, Danica V. and Mitrić, Miodrag and Mirsky, Vladimir M. and Mentus, Slavko V. and Pašti, Igor A.",
year = "2018",
abstract = "The increasing energy demands of modern society require a deep understanding of the properties of energy storage materials, as well as the tuning of their performance. We show that the capacitance of graphene oxide (GO) can be precisely tuned using a simple electrochemical reduction route. In situ resistance measurements, in combination with cyclic voltammetry measurements and Raman spectroscopy, have shown that upon reduction GO is irreversibly deoxygenated, which is further accompanied by structural ordering and an increase in electrical conductivity. The capacitance is maximized when the concentration of oxygen functional groups is properly balanced with the conductivity. Any further reduction and deoxygenation leads to a gradual loss of capacitance. The observed trend is independent of the preparation route and the exact chemical and structural properties of GO. It is proposed that an improvement in the capacitive properties of any GO can be achieved by optimization of its reduction conditions.",
journal = "Physical Chemistry Chemical Physics",
title = "Electrochemical tuning of capacitive response of graphene oxide",
volume = "20",
number = "35",
pages = "22698-22709",
doi = "10.1039/C8CP03631D"
}

Gutić, S. J., Kozlica, D. K., Korać, F., Bajuk-Bogdanović, D. V., Mitrić, M., Mirsky, V. M., Mentus, S. V.,& Pašti, I. A.. (2018). Electrochemical tuning of capacitive response of graphene oxide. in Physical Chemistry Chemical Physics, 20(35), 22698-22709.
https://doi.org/10.1039/C8CP03631D

Gutić SJ, Kozlica DK, Korać F, Bajuk-Bogdanović DV, Mitrić M, Mirsky VM, Mentus SV, Pašti IA. Electrochemical tuning of capacitive response of graphene oxide. in Physical Chemistry Chemical Physics. 2018;20(35):22698-22709.
doi:10.1039/C8CP03631D .

Gutić, Sanjin J., Kozlica, Dževad K., Korać, Fehim, Bajuk-Bogdanović, Danica V., Mitrić, Miodrag, Mirsky, Vladimir M., Mentus, Slavko V., Pašti, Igor A., "Electrochemical tuning of capacitive response of graphene oxide" in Physical Chemistry Chemical Physics, 20, no. 35 (2018):22698-22709,
https://doi.org/10.1039/C8CP03631D . .

TY  - JOUR
AU  - Vujković, Milica
AU  - Bajuk-Bogdanović, Danica V.
AU  - Matović, Ljiljana
AU  - Stojmenović, Marija
AU  - Mentus, Slavko V.
PY  - 2018
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0008622318307036
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7872
AB  - Coulombic capacity of zeolite-templated carbon (ZTC) measured in alkaline solution was roughly doubled by a previous potentiodynamic treatment in sulfuric acidic solution. In order to explain the reasons of this capacity improvement, the changes in chemical composition of ZTC surface during its pretreatment in sulfuric acid either by simple immersion, or by potentiodynamic polarization, and during subsequent potentiodynamic polarization in KOH solutions, were studied by means of TG/DTA, FTIR spectroscopy and Raman spectroscopy. The results of this study open some novel insights in understanding of very peculiar carbon electrochemistry. The observed changes in surface chemistry include i) fast adsorption of H2O and formation of OH− and epoxide groups on immersion in sulfuric acid, ii) the multiplication of concentration of H2O/OH− and epoxide groups during potentiodynamic cycling in sulfuric acid and iii) the ring-opening of epoxide groups (formed during potentiodynamic cycling in acidic solution) upon its potentiodynamic cycling in alkaline solution, according to a SN2 type mechanism, which results in the formation of aromatic OH-containing diol compounds. © 2018 Elsevier Ltd
T2  - Carbon
T1  - Mild electrochemical oxidation of zeolite templated carbon in acidic solutions, as a way to boost its charge storage properties in alkaline solutions
VL  - 138
SP  - 369
EP  - 378
DO  - 10.1016/j.carbon.2018.07.053
ER  - 

@article{
author = "Vujković, Milica and Bajuk-Bogdanović, Danica V. and Matović, Ljiljana and Stojmenović, Marija and Mentus, Slavko V.",
year = "2018",
abstract = "Coulombic capacity of zeolite-templated carbon (ZTC) measured in alkaline solution was roughly doubled by a previous potentiodynamic treatment in sulfuric acidic solution. In order to explain the reasons of this capacity improvement, the changes in chemical composition of ZTC surface during its pretreatment in sulfuric acid either by simple immersion, or by potentiodynamic polarization, and during subsequent potentiodynamic polarization in KOH solutions, were studied by means of TG/DTA, FTIR spectroscopy and Raman spectroscopy. The results of this study open some novel insights in understanding of very peculiar carbon electrochemistry. The observed changes in surface chemistry include i) fast adsorption of H2O and formation of OH− and epoxide groups on immersion in sulfuric acid, ii) the multiplication of concentration of H2O/OH− and epoxide groups during potentiodynamic cycling in sulfuric acid and iii) the ring-opening of epoxide groups (formed during potentiodynamic cycling in acidic solution) upon its potentiodynamic cycling in alkaline solution, according to a SN2 type mechanism, which results in the formation of aromatic OH-containing diol compounds. © 2018 Elsevier Ltd",
journal = "Carbon",
title = "Mild electrochemical oxidation of zeolite templated carbon in acidic solutions, as a way to boost its charge storage properties in alkaline solutions",
volume = "138",
pages = "369-378",
doi = "10.1016/j.carbon.2018.07.053"
}

Vujković, M., Bajuk-Bogdanović, D. V., Matović, L., Stojmenović, M.,& Mentus, S. V.. (2018). Mild electrochemical oxidation of zeolite templated carbon in acidic solutions, as a way to boost its charge storage properties in alkaline solutions. in Carbon, 138, 369-378.
https://doi.org/10.1016/j.carbon.2018.07.053

Vujković M, Bajuk-Bogdanović DV, Matović L, Stojmenović M, Mentus SV. Mild electrochemical oxidation of zeolite templated carbon in acidic solutions, as a way to boost its charge storage properties in alkaline solutions. in Carbon. 2018;138:369-378.
doi:10.1016/j.carbon.2018.07.053 .

Vujković, Milica, Bajuk-Bogdanović, Danica V., Matović, Ljiljana, Stojmenović, Marija, Mentus, Slavko V., "Mild electrochemical oxidation of zeolite templated carbon in acidic solutions, as a way to boost its charge storage properties in alkaline solutions" in Carbon, 138 (2018):369-378,
https://doi.org/10.1016/j.carbon.2018.07.053 . .

TY  - JOUR
AU  - Vujković, Milica
AU  - Matović, Ljiljana
AU  - Krstić, Jugoslav B.
AU  - Stojmenović, Marija
AU  - Đukić, Anđelka B.
AU  - Babić, Biljana M.
AU  - Mentus, Slavko V.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1661
AB  - The activated carbon cloth (ACC), obtained by chemical/physical activation of carbonized rayon fibers, was grinded in a ball mill and studied from the aspect of double layer capacitance. The changes in pore structure, morphology and acid/basic properties caused by ball milling were studied by means of N-2 adsorption/desorption, Fourier-transformed infrared spectrometry, Boehms titration and Scanning Electron Microscopy. Both potentiodynamic and galvanostatic cycling were used to evaluate the double layer capacitance in three alkaline, acidic and neutral aqueous solutions (KOH, H2SO4 and Na2SO4). While double layer capacitance of original ACC was found to be negligible, ball milled material (ACCm) displayed capacitance in the range of supercapacitors. In order to explain this huge capacitance improvement, we found that ball milling substantially increased the concentration of lactone, phenolic and quinone groups on the surface. We suggest that these groups, through improved hydrophilicity, enable faster ion diffusion into carbon micropores. The energy density stored by double layer was highest in neutral sodium sulphate solution. Namely, operational voltage of similar to 2 V and double layer capacitance of 220 F g(-1) at 1A g(-1), enable the energy density of ACCm/Na2SO4/ACCm capacitor of 31.7 Wh kg(-1) at 2000 W kg(-1), much higher than that of commercial EDLC carbon capacitors. According to the here presented literature survey in a tabular form, the energy density of the studied sample is also higher from that of numerous thus far published aqueous carbon capacitors. (C) 2017 Elsevier Ltd. All rights reserved.
T2  - Electrochimica Acta
T1  - Mechanically activated carbonized rayon fibers as an electrochemical supercapacitor in aqueous solutions
VL  - 245
SP  - 796
EP  - 806
DO  - 10.1016/j.electacta.2017.06.018
ER  - 

@article{
author = "Vujković, Milica and Matović, Ljiljana and Krstić, Jugoslav B. and Stojmenović, Marija and Đukić, Anđelka B. and Babić, Biljana M. and Mentus, Slavko V.",
year = "2017",
abstract = "The activated carbon cloth (ACC), obtained by chemical/physical activation of carbonized rayon fibers, was grinded in a ball mill and studied from the aspect of double layer capacitance. The changes in pore structure, morphology and acid/basic properties caused by ball milling were studied by means of N-2 adsorption/desorption, Fourier-transformed infrared spectrometry, Boehms titration and Scanning Electron Microscopy. Both potentiodynamic and galvanostatic cycling were used to evaluate the double layer capacitance in three alkaline, acidic and neutral aqueous solutions (KOH, H2SO4 and Na2SO4). While double layer capacitance of original ACC was found to be negligible, ball milled material (ACCm) displayed capacitance in the range of supercapacitors. In order to explain this huge capacitance improvement, we found that ball milling substantially increased the concentration of lactone, phenolic and quinone groups on the surface. We suggest that these groups, through improved hydrophilicity, enable faster ion diffusion into carbon micropores. The energy density stored by double layer was highest in neutral sodium sulphate solution. Namely, operational voltage of similar to 2 V and double layer capacitance of 220 F g(-1) at 1A g(-1), enable the energy density of ACCm/Na2SO4/ACCm capacitor of 31.7 Wh kg(-1) at 2000 W kg(-1), much higher than that of commercial EDLC carbon capacitors. According to the here presented literature survey in a tabular form, the energy density of the studied sample is also higher from that of numerous thus far published aqueous carbon capacitors. (C) 2017 Elsevier Ltd. All rights reserved.",
journal = "Electrochimica Acta",
title = "Mechanically activated carbonized rayon fibers as an electrochemical supercapacitor in aqueous solutions",
volume = "245",
pages = "796-806",
doi = "10.1016/j.electacta.2017.06.018"
}

Vujković, M., Matović, L., Krstić, J. B., Stojmenović, M., Đukić, A. B., Babić, B. M.,& Mentus, S. V.. (2017). Mechanically activated carbonized rayon fibers as an electrochemical supercapacitor in aqueous solutions. in Electrochimica Acta, 245, 796-806.
https://doi.org/10.1016/j.electacta.2017.06.018

Vujković M, Matović L, Krstić JB, Stojmenović M, Đukić AB, Babić BM, Mentus SV. Mechanically activated carbonized rayon fibers as an electrochemical supercapacitor in aqueous solutions. in Electrochimica Acta. 2017;245:796-806.
doi:10.1016/j.electacta.2017.06.018 .

Vujković, Milica, Matović, Ljiljana, Krstić, Jugoslav B., Stojmenović, Marija, Đukić, Anđelka B., Babić, Biljana M., Mentus, Slavko V., "Mechanically activated carbonized rayon fibers as an electrochemical supercapacitor in aqueous solutions" in Electrochimica Acta, 245 (2017):796-806,
https://doi.org/10.1016/j.electacta.2017.06.018 . .

TY  - JOUR
AU  - Stoševski, Ivan
AU  - Krstić, Jelena
AU  - Milikic, Jadranka
AU  - Šljukić, Biljana
AU  - Kačarević-Popović, Zorica M.
AU  - Mentus, Slavko V.
AU  - Miljanić, Šćepan S.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1054
AB  - Carbon-supported silver nanoparticles (Ag:NPs/C) were synthesized by gamma irradiation-induced reduction method using the poly(vinyl alcohol) or poly(vinyl alcohol)/chitosan polymer as stabilizer. Prepared samples were characterized using transmission electron microscopy and X-ray diffractometry. Subsequently, Ag:NPs/C were studied using rotating disc and rotating ring disc method as electrocatalysts for ORR (oxygen reduction reaction) and BOR (borohydride oxidation reaction) for potential application in alkaline fuel cells. The synthesis method used herein offers simple and fast approach for catalytic ink preparation, since the ink is prepared in one-step radiation process, simultaneously with Ag+ ions reduction. Very high and stable catalytic efficiency toward ORR via 4e(-) path was evidenced during 4000 square pulse polarization cycles. BOR, accompanied with the simultaneous borohydride ion hydrolysis, was found to proceed at the oxidized Ag surface. (C) 2016 Elsevier Ltd. All rights reserved.
PB  - Elsevier
T2  - Energy
T1  - Radiolitically synthesized nano Ag/C catalysts for oxygen reduction and borohydride oxidation reactions in alkaline media, for potential applications in fuel cells
VL  - 101
SP  - 79
EP  - 90
DO  - 10.1016/j.energy.2016.02.003
ER  - 

@article{
author = "Stoševski, Ivan and Krstić, Jelena and Milikic, Jadranka and Šljukić, Biljana and Kačarević-Popović, Zorica M. and Mentus, Slavko V. and Miljanić, Šćepan S.",
year = "2016",
abstract = "Carbon-supported silver nanoparticles (Ag:NPs/C) were synthesized by gamma irradiation-induced reduction method using the poly(vinyl alcohol) or poly(vinyl alcohol)/chitosan polymer as stabilizer. Prepared samples were characterized using transmission electron microscopy and X-ray diffractometry. Subsequently, Ag:NPs/C were studied using rotating disc and rotating ring disc method as electrocatalysts for ORR (oxygen reduction reaction) and BOR (borohydride oxidation reaction) for potential application in alkaline fuel cells. The synthesis method used herein offers simple and fast approach for catalytic ink preparation, since the ink is prepared in one-step radiation process, simultaneously with Ag+ ions reduction. Very high and stable catalytic efficiency toward ORR via 4e(-) path was evidenced during 4000 square pulse polarization cycles. BOR, accompanied with the simultaneous borohydride ion hydrolysis, was found to proceed at the oxidized Ag surface. (C) 2016 Elsevier Ltd. All rights reserved.",
publisher = "Elsevier",
journal = "Energy",
title = "Radiolitically synthesized nano Ag/C catalysts for oxygen reduction and borohydride oxidation reactions in alkaline media, for potential applications in fuel cells",
volume = "101",
pages = "79-90",
doi = "10.1016/j.energy.2016.02.003"
}

Stoševski, I., Krstić, J., Milikic, J., Šljukić, B., Kačarević-Popović, Z. M., Mentus, S. V.,& Miljanić, Š. S.. (2016). Radiolitically synthesized nano Ag/C catalysts for oxygen reduction and borohydride oxidation reactions in alkaline media, for potential applications in fuel cells. in Energy
Elsevier., 101, 79-90.
https://doi.org/10.1016/j.energy.2016.02.003

Stoševski I, Krstić J, Milikic J, Šljukić B, Kačarević-Popović ZM, Mentus SV, Miljanić ŠS. Radiolitically synthesized nano Ag/C catalysts for oxygen reduction and borohydride oxidation reactions in alkaline media, for potential applications in fuel cells. in Energy. 2016;101:79-90.
doi:10.1016/j.energy.2016.02.003 .

Stoševski, Ivan, Krstić, Jelena, Milikic, Jadranka, Šljukić, Biljana, Kačarević-Popović, Zorica M., Mentus, Slavko V., Miljanić, Šćepan S., "Radiolitically synthesized nano Ag/C catalysts for oxygen reduction and borohydride oxidation reactions in alkaline media, for potential applications in fuel cells" in Energy, 101 (2016):79-90,
https://doi.org/10.1016/j.energy.2016.02.003 . .

TY  - JOUR
AU  - Stojmenović, Marija
AU  - Vujković, Milica
AU  - Matović, Ljiljana
AU  - Krstić, Jugoslav B.
AU  - Đukić, Anđelka B.
AU  - Dodevski, Vladimir
AU  - Živković, Sanja
AU  - Mentus, Slavko V.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1096
AB  - Microporous zeolite templated carbon (ZTC) was synthesized by impregnation method using zeolite Y (Na-form) as a template, and furfuryl alcohol as a carbon precursor. The characterization was carried out by X-ray diffractometry, Raman spectroscopy, scanning electron microscopy, nitrogen physisorption, elemental analysis and electrochemical methods. Physisorption measurements evidenced high micro pore volume of obtained material (similar to 0.43 cm(3) g(-1)). The charge storage ability in aqueous KOH, H2SO4 and Na2SO4 solutions was systematically studied by cyclic voltammetry, galvanostatic charging/discharging and complex impedance measurements. Specific coulombic capacitance, the hydrogen storage, H-ZTC bonding and relaxation time of adsorption were found to be dependent on the type of electrolyte. Neutral Na2SO4 aqueous solution was found to be the best for supercapacitor application, thanks to: i) the highest available voltage window ii) lowest corrosion and iii) highest capacitance amounting to 123 F g(-1) at 1 A g(-1) (C) 2016 Elsevier Inc. All rights reserved.
PB  - Elsevier
T2  - Microporous and Mesoporous Materials
T1  - Complex investigation of charge storage behavior of microporous carbon synthesized by zeolite template
VL  - 228
SP  - 94
EP  - 106
DO  - 10.1016/j.micromeso.2016.03.029
ER  - 

@article{
author = "Stojmenović, Marija and Vujković, Milica and Matović, Ljiljana and Krstić, Jugoslav B. and Đukić, Anđelka B. and Dodevski, Vladimir and Živković, Sanja and Mentus, Slavko V.",
year = "2016",
abstract = "Microporous zeolite templated carbon (ZTC) was synthesized by impregnation method using zeolite Y (Na-form) as a template, and furfuryl alcohol as a carbon precursor. The characterization was carried out by X-ray diffractometry, Raman spectroscopy, scanning electron microscopy, nitrogen physisorption, elemental analysis and electrochemical methods. Physisorption measurements evidenced high micro pore volume of obtained material (similar to 0.43 cm(3) g(-1)). The charge storage ability in aqueous KOH, H2SO4 and Na2SO4 solutions was systematically studied by cyclic voltammetry, galvanostatic charging/discharging and complex impedance measurements. Specific coulombic capacitance, the hydrogen storage, H-ZTC bonding and relaxation time of adsorption were found to be dependent on the type of electrolyte. Neutral Na2SO4 aqueous solution was found to be the best for supercapacitor application, thanks to: i) the highest available voltage window ii) lowest corrosion and iii) highest capacitance amounting to 123 F g(-1) at 1 A g(-1) (C) 2016 Elsevier Inc. All rights reserved.",
publisher = "Elsevier",
journal = "Microporous and Mesoporous Materials",
title = "Complex investigation of charge storage behavior of microporous carbon synthesized by zeolite template",
volume = "228",
pages = "94-106",
doi = "10.1016/j.micromeso.2016.03.029"
}

Stojmenović, M., Vujković, M., Matović, L., Krstić, J. B., Đukić, A. B., Dodevski, V., Živković, S.,& Mentus, S. V.. (2016). Complex investigation of charge storage behavior of microporous carbon synthesized by zeolite template. in Microporous and Mesoporous Materials
Elsevier., 228, 94-106.
https://doi.org/10.1016/j.micromeso.2016.03.029

Stojmenović M, Vujković M, Matović L, Krstić JB, Đukić AB, Dodevski V, Živković S, Mentus SV. Complex investigation of charge storage behavior of microporous carbon synthesized by zeolite template. in Microporous and Mesoporous Materials. 2016;228:94-106.
doi:10.1016/j.micromeso.2016.03.029 .

Stojmenović, Marija, Vujković, Milica, Matović, Ljiljana, Krstić, Jugoslav B., Đukić, Anđelka B., Dodevski, Vladimir, Živković, Sanja, Mentus, Slavko V., "Complex investigation of charge storage behavior of microporous carbon synthesized by zeolite template" in Microporous and Mesoporous Materials, 228 (2016):94-106,
https://doi.org/10.1016/j.micromeso.2016.03.029 . .

TY  - JOUR
AU  - Omerašević, Mia
AU  - Matović, Ljiljana
AU  - Ružić, Jovana
AU  - Golubović, Željko
AU  - Jovanović, Uroš D.
AU  - Mentus, Slavko V.
AU  - Dondur, Vera
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1038
AB  - A simple one-step method with direct thermal conversion at lower temperatures for preparing a stabile Cs-aluminsilicate phase, known as pollucite, is presented. Cs-exchanged form of Na, Ca-LTA type of zeolite (Cs-LTA) was pressureless sintered and hot pressed at certain temperatures in order to obtain pollucite. XRD and FTIR analysis were used to study structural changes of Cs-LTA before and after thermal treatments. Pressureless sintered sample recrystallized into pollucite phase after heat treatment at 1000 degrees C (3 h) (PLS1000) and hot pressed sample at 750 degrees C (3 h) using pressure of 35 MPa (HP750), indicating reduced temperature of 250 degrees. SEM micrographs confirmed that HP750 has higher density than PLS1000 which leads to higher value of compressive strength. The HP750 showed better resistance to Cs leaching than the PLS1000. Base on these results one can conclude that hot pressing is the promising method for the permanent disposal of Cs radionuclides. (C) 2016 Elsevier B.V. All rights reserved.
PB  - Elsevier
T2  - Journal of Nuclear Materials
T1  - Safe trapping of cesium into pollucite structure by hot-pressing method
VL  - 474
SP  - 35
EP  - 44
DO  - 10.1016/j.jnucmat.2016.03.006
ER  - 

@article{
author = "Omerašević, Mia and Matović, Ljiljana and Ružić, Jovana and Golubović, Željko and Jovanović, Uroš D. and Mentus, Slavko V. and Dondur, Vera",
year = "2016",
abstract = "A simple one-step method with direct thermal conversion at lower temperatures for preparing a stabile Cs-aluminsilicate phase, known as pollucite, is presented. Cs-exchanged form of Na, Ca-LTA type of zeolite (Cs-LTA) was pressureless sintered and hot pressed at certain temperatures in order to obtain pollucite. XRD and FTIR analysis were used to study structural changes of Cs-LTA before and after thermal treatments. Pressureless sintered sample recrystallized into pollucite phase after heat treatment at 1000 degrees C (3 h) (PLS1000) and hot pressed sample at 750 degrees C (3 h) using pressure of 35 MPa (HP750), indicating reduced temperature of 250 degrees. SEM micrographs confirmed that HP750 has higher density than PLS1000 which leads to higher value of compressive strength. The HP750 showed better resistance to Cs leaching than the PLS1000. Base on these results one can conclude that hot pressing is the promising method for the permanent disposal of Cs radionuclides. (C) 2016 Elsevier B.V. All rights reserved.",
publisher = "Elsevier",
journal = "Journal of Nuclear Materials",
title = "Safe trapping of cesium into pollucite structure by hot-pressing method",
volume = "474",
pages = "35-44",
doi = "10.1016/j.jnucmat.2016.03.006"
}

Omerašević, M., Matović, L., Ružić, J., Golubović, Ž., Jovanović, U. D., Mentus, S. V.,& Dondur, V.. (2016). Safe trapping of cesium into pollucite structure by hot-pressing method. in Journal of Nuclear Materials
Elsevier., 474, 35-44.
https://doi.org/10.1016/j.jnucmat.2016.03.006

Omerašević M, Matović L, Ružić J, Golubović Ž, Jovanović UD, Mentus SV, Dondur V. Safe trapping of cesium into pollucite structure by hot-pressing method. in Journal of Nuclear Materials. 2016;474:35-44.
doi:10.1016/j.jnucmat.2016.03.006 .

Omerašević, Mia, Matović, Ljiljana, Ružić, Jovana, Golubović, Željko, Jovanović, Uroš D., Mentus, Slavko V., Dondur, Vera, "Safe trapping of cesium into pollucite structure by hot-pressing method" in Journal of Nuclear Materials, 474 (2016):35-44,
https://doi.org/10.1016/j.jnucmat.2016.03.006 . .

TY  - JOUR
AU  - Dodevski, Vladimir
AU  - Stojmenović, Marija
AU  - Vujković, Milica
AU  - Krstić, Jugoslav B.
AU  - Krstić, Sanja S.
AU  - Bajuk-Bogdanović, Danica V.
AU  - Kuzmanović, Bojana
AU  - Kaluđerović, Branka V.
AU  - Mentus, Slavko V.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1396
AB  - Activated carbon was prepared using plane tree seed as a cheap and renewable raw material. The samples were prepared by carbonization under N-2 atmosphere up to 850 degrees C, and activation in CO2 atmosphere at different both temperatures (750 and 850 degrees C) and times of activation (0.3,1 and 2 h). The influence of activation parameters on physicochemical properties was studied by XRPD, Raman spectroscopy, FTIR, N-2 physisorption, SEM and electrochemical methods. The pore structure was correlated to the specific capacitance and the amount of hydrogen stored, in alkaline, neutral and acidic electrolyte solution. The relationship of asymmetrical shape of CV curves with the porosity of samples has served to better understand some unclear issues related to the complex mechanism of charge storage. The sample activated at 850 degrees C for 2 h displayed the best behavior. At a high scan rate of 300 mV s(-1), its capacitance, amounted to similar to 26.8 mu F cm(-2) 19.69 mu F cm(-2) and 25.8 mu Fcm(-2) in KOH, Na2SO4, and H2SO4 solutions, respectively. (C) 2016 Elsevier Ltd. All rights reserved.
T2  - Electrochimica Acta
T1  - Complex insight into the charge storage behavior of active carbons obtained by carbonization of the plane tree seed
VL  - 222
SP  - 156
EP  - 171
DO  - 10.1016/j.electacta.2016.10.182
ER  - 

@article{
author = "Dodevski, Vladimir and Stojmenović, Marija and Vujković, Milica and Krstić, Jugoslav B. and Krstić, Sanja S. and Bajuk-Bogdanović, Danica V. and Kuzmanović, Bojana and Kaluđerović, Branka V. and Mentus, Slavko V.",
year = "2016",
abstract = "Activated carbon was prepared using plane tree seed as a cheap and renewable raw material. The samples were prepared by carbonization under N-2 atmosphere up to 850 degrees C, and activation in CO2 atmosphere at different both temperatures (750 and 850 degrees C) and times of activation (0.3,1 and 2 h). The influence of activation parameters on physicochemical properties was studied by XRPD, Raman spectroscopy, FTIR, N-2 physisorption, SEM and electrochemical methods. The pore structure was correlated to the specific capacitance and the amount of hydrogen stored, in alkaline, neutral and acidic electrolyte solution. The relationship of asymmetrical shape of CV curves with the porosity of samples has served to better understand some unclear issues related to the complex mechanism of charge storage. The sample activated at 850 degrees C for 2 h displayed the best behavior. At a high scan rate of 300 mV s(-1), its capacitance, amounted to similar to 26.8 mu F cm(-2) 19.69 mu F cm(-2) and 25.8 mu Fcm(-2) in KOH, Na2SO4, and H2SO4 solutions, respectively. (C) 2016 Elsevier Ltd. All rights reserved.",
journal = "Electrochimica Acta",
title = "Complex insight into the charge storage behavior of active carbons obtained by carbonization of the plane tree seed",
volume = "222",
pages = "156-171",
doi = "10.1016/j.electacta.2016.10.182"
}

Dodevski, V., Stojmenović, M., Vujković, M., Krstić, J. B., Krstić, S. S., Bajuk-Bogdanović, D. V., Kuzmanović, B., Kaluđerović, B. V.,& Mentus, S. V.. (2016). Complex insight into the charge storage behavior of active carbons obtained by carbonization of the plane tree seed. in Electrochimica Acta, 222, 156-171.
https://doi.org/10.1016/j.electacta.2016.10.182

Dodevski V, Stojmenović M, Vujković M, Krstić JB, Krstić SS, Bajuk-Bogdanović DV, Kuzmanović B, Kaluđerović BV, Mentus SV. Complex insight into the charge storage behavior of active carbons obtained by carbonization of the plane tree seed. in Electrochimica Acta. 2016;222:156-171.
doi:10.1016/j.electacta.2016.10.182 .

Dodevski, Vladimir, Stojmenović, Marija, Vujković, Milica, Krstić, Jugoslav B., Krstić, Sanja S., Bajuk-Bogdanović, Danica V., Kuzmanović, Bojana, Kaluđerović, Branka V., Mentus, Slavko V., "Complex insight into the charge storage behavior of active carbons obtained by carbonization of the plane tree seed" in Electrochimica Acta, 222 (2016):156-171,
https://doi.org/10.1016/j.electacta.2016.10.182 . .

TY  - JOUR
AU  - Stojmenović, Marija
AU  - Žunić, Milan
AU  - Gulicovski, Jelena J.
AU  - Dodevski, Vladimir
AU  - Prekajski, Marija D.
AU  - Raduovic, Aleksandar
AU  - Mentus, Slavko V.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1185
AB  - Nanoparticles of ceria ruthenium oxide solid solutions with composition Ce1-xRuxO2-delta (X=0.005-0.02) were successfully produced by self propagating room temperature synthesis using reaction between metal nitrates and sodium hydroxide. These compositions were characterized by X-ray powder diffraction (XRD), Raman spectroscopy, specific surface area, transmission electron microscopy (TEM), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX). The experimental measurements were complemented by calculations based on the ion packing model. XRD analysis revealed the presence of single phase solid solutions with CeO2 fluorite structure (regardless of dopants concentration) and Raman spectroscopy confirmed the presence of the RuO2 phase. Electrochemical impedance spectroscopy (EIS) measurements of sintered samples at different temperatures showed that the small ionic radius dopant reduces oxygen vacancies mobility that is responsible for the conductivity of these ceramics. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
T2  - Ceramics International
T1  - Structural, morphological and electrical properties of Ce1-xRuxO2-delta (x=0.005-0.02) solid solutions
VL  - 42
IS  - 12
SP  - 14011
EP  - 14020
DO  - 10.1016/j.ceramint.2016.06.007
ER  - 

@article{
author = "Stojmenović, Marija and Žunić, Milan and Gulicovski, Jelena J. and Dodevski, Vladimir and Prekajski, Marija D. and Raduovic, Aleksandar and Mentus, Slavko V.",
year = "2016",
abstract = "Nanoparticles of ceria ruthenium oxide solid solutions with composition Ce1-xRuxO2-delta (X=0.005-0.02) were successfully produced by self propagating room temperature synthesis using reaction between metal nitrates and sodium hydroxide. These compositions were characterized by X-ray powder diffraction (XRD), Raman spectroscopy, specific surface area, transmission electron microscopy (TEM), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX). The experimental measurements were complemented by calculations based on the ion packing model. XRD analysis revealed the presence of single phase solid solutions with CeO2 fluorite structure (regardless of dopants concentration) and Raman spectroscopy confirmed the presence of the RuO2 phase. Electrochemical impedance spectroscopy (EIS) measurements of sintered samples at different temperatures showed that the small ionic radius dopant reduces oxygen vacancies mobility that is responsible for the conductivity of these ceramics. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.",
journal = "Ceramics International",
title = "Structural, morphological and electrical properties of Ce1-xRuxO2-delta (x=0.005-0.02) solid solutions",
volume = "42",
number = "12",
pages = "14011-14020",
doi = "10.1016/j.ceramint.2016.06.007"
}

Stojmenović, M., Žunić, M., Gulicovski, J. J., Dodevski, V., Prekajski, M. D., Raduovic, A.,& Mentus, S. V.. (2016). Structural, morphological and electrical properties of Ce1-xRuxO2-delta (x=0.005-0.02) solid solutions. in Ceramics International, 42(12), 14011-14020.
https://doi.org/10.1016/j.ceramint.2016.06.007

Stojmenović M, Žunić M, Gulicovski JJ, Dodevski V, Prekajski MD, Raduovic A, Mentus SV. Structural, morphological and electrical properties of Ce1-xRuxO2-delta (x=0.005-0.02) solid solutions. in Ceramics International. 2016;42(12):14011-14020.
doi:10.1016/j.ceramint.2016.06.007 .

Stojmenović, Marija, Žunić, Milan, Gulicovski, Jelena J., Dodevski, Vladimir, Prekajski, Marija D., Raduovic, Aleksandar, Mentus, Slavko V., "Structural, morphological and electrical properties of Ce1-xRuxO2-delta (x=0.005-0.02) solid solutions" in Ceramics International, 42, no. 12 (2016):14011-14020,
https://doi.org/10.1016/j.ceramint.2016.06.007 . .

TY  - JOUR
AU  - Dobrota, Ana S.
AU  - Gutić, Sanjin J.
AU  - Kalijadis, Ana
AU  - Baljozović, Miloš
AU  - Mentus, Slavko V.
AU  - Skorodumova, Natalia V.
AU  - Pašti, Igor A.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1155
AB  - Graphene synthesized by reduction of graphene oxide, depending on the degree of reduction, retains a certain amount of surface OH groups. Considering the surface OH groups/graphene layer system by means of density functional theory calculations, we evidenced the tendency of OH groups to cluster, resulting in enhanced system stability and no band gap opening. In the oxygen concentration range between 1.8 and 8.47 at%, with the addition of each new OH group, integral binding energy decreases, while differential binding energy shows the boost at even numbers of OH groups. Furthermore, we found that the clustering of OH groups over graphene basal plane plays a crucial role in enhancing the interactions with alkali metals. Namely, if alkali metal atoms interact with individual OH groups only, the interaction leads to an irreversible formation of MOH phase. When alkali atoms interact with clusters containing odd number of OH groups, a reversible transfer of an electron charge from the metal atom to the substrate takes place without OH removal. The strength of the interaction in general increases from Li to K. In an experimental investigation of a graphene sample which dominantly contains OH groups, we have shown that the trend in the specific interaction strength reflects to gravimetric capacitances measured in alkali metal chloride solutions. We propose that the charge stored in OH groups which interact with alkali metal cation and the pi electronic system of the graphene basal plane presents the main part of its pseudocapacitance.
T2  - RSC Advances
T1  - Stabilization of alkali metal ions interaction with OH-functionalized graphene via clustering of OH groups - implications in charge storage applications
VL  - 6
IS  - 63
SP  - 57910
EP  - 57919
DO  - 10.1039/c6ra13509a
ER  - 

@article{
author = "Dobrota, Ana S. and Gutić, Sanjin J. and Kalijadis, Ana and Baljozović, Miloš and Mentus, Slavko V. and Skorodumova, Natalia V. and Pašti, Igor A.",
year = "2016",
abstract = "Graphene synthesized by reduction of graphene oxide, depending on the degree of reduction, retains a certain amount of surface OH groups. Considering the surface OH groups/graphene layer system by means of density functional theory calculations, we evidenced the tendency of OH groups to cluster, resulting in enhanced system stability and no band gap opening. In the oxygen concentration range between 1.8 and 8.47 at%, with the addition of each new OH group, integral binding energy decreases, while differential binding energy shows the boost at even numbers of OH groups. Furthermore, we found that the clustering of OH groups over graphene basal plane plays a crucial role in enhancing the interactions with alkali metals. Namely, if alkali metal atoms interact with individual OH groups only, the interaction leads to an irreversible formation of MOH phase. When alkali atoms interact with clusters containing odd number of OH groups, a reversible transfer of an electron charge from the metal atom to the substrate takes place without OH removal. The strength of the interaction in general increases from Li to K. In an experimental investigation of a graphene sample which dominantly contains OH groups, we have shown that the trend in the specific interaction strength reflects to gravimetric capacitances measured in alkali metal chloride solutions. We propose that the charge stored in OH groups which interact with alkali metal cation and the pi electronic system of the graphene basal plane presents the main part of its pseudocapacitance.",
journal = "RSC Advances",
title = "Stabilization of alkali metal ions interaction with OH-functionalized graphene via clustering of OH groups - implications in charge storage applications",
volume = "6",
number = "63",
pages = "57910-57919",
doi = "10.1039/c6ra13509a"
}

Dobrota, A. S., Gutić, S. J., Kalijadis, A., Baljozović, M., Mentus, S. V., Skorodumova, N. V.,& Pašti, I. A.. (2016). Stabilization of alkali metal ions interaction with OH-functionalized graphene via clustering of OH groups - implications in charge storage applications. in RSC Advances, 6(63), 57910-57919.
https://doi.org/10.1039/c6ra13509a

Dobrota AS, Gutić SJ, Kalijadis A, Baljozović M, Mentus SV, Skorodumova NV, Pašti IA. Stabilization of alkali metal ions interaction with OH-functionalized graphene via clustering of OH groups - implications in charge storage applications. in RSC Advances. 2016;6(63):57910-57919.
doi:10.1039/c6ra13509a .

Dobrota, Ana S., Gutić, Sanjin J., Kalijadis, Ana, Baljozović, Miloš, Mentus, Slavko V., Skorodumova, Natalia V., Pašti, Igor A., "Stabilization of alkali metal ions interaction with OH-functionalized graphene via clustering of OH groups - implications in charge storage applications" in RSC Advances, 6, no. 63 (2016):57910-57919,
https://doi.org/10.1039/c6ra13509a . .

TY  - JOUR
AU  - Stojmenović, Marija
AU  - Momčilović, Milan Z.
AU  - Gavrilov, Nemanja M.
AU  - Pašti, Igor A.
AU  - Mentus, Slavko V.
AU  - Jokić, Bojan M.
AU  - Babić, Biljana M.
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/371
AB  - Ordered mesoporous carbon, volume-doped up to 3w.% with Pt, Ru and Pt-Ru nanoparticles was synthesized by evaporation-induced self-assembly method, under acidic conditions. The content of incorporated metal was determined by EDX analysis. The X-ray diffractometry confirmed the existence of highly dispersed metallic phases in doped samples. Specific surface area was determined by N-2-physisorption measurements to range between 452 and 545m(2) g(-1). Raman spectroscopy of investigated materials indicated highly disordered carbon structure with crystallite sizes around 1.4 nm. In a form of thin-layer electrode on glassy carbon support, in 0.1M KOH solution, the prepared materials displayed high activity toward oxygen reduction reaction (ORR) in alkaline media, with onset potentials more positive than -0.10 V vs. SCE. The kinetics of O-2 reduction was found to be affected by both the specific surface area and the concentration of metal dopants. The ethanol tolerance of (Pt, Ru)-doped OMCs was found to be higher than that of common Pt/C ORR catalysts. Presented study provides a new route for the synthesis of active and selective ORR catalysts in alkaline media, being competitive with, or superior to, the existing ones in terms of performance and price. (C) 2014 Elsevier Ltd. All rights reserved.
T2  - Electrochimica Acta
T1  - Incorporation of Pt, Ru and Pt-Ru nanoparticles into ordered mesoporous carbons for efficient oxygen reduction reaction in alkaline media
VL  - 153
SP  - 130
EP  - 139
DO  - 10.1016/j.electacta.2014.11.080
ER  - 

@article{
author = "Stojmenović, Marija and Momčilović, Milan Z. and Gavrilov, Nemanja M. and Pašti, Igor A. and Mentus, Slavko V. and Jokić, Bojan M. and Babić, Biljana M.",
year = "2015",
abstract = "Ordered mesoporous carbon, volume-doped up to 3w.% with Pt, Ru and Pt-Ru nanoparticles was synthesized by evaporation-induced self-assembly method, under acidic conditions. The content of incorporated metal was determined by EDX analysis. The X-ray diffractometry confirmed the existence of highly dispersed metallic phases in doped samples. Specific surface area was determined by N-2-physisorption measurements to range between 452 and 545m(2) g(-1). Raman spectroscopy of investigated materials indicated highly disordered carbon structure with crystallite sizes around 1.4 nm. In a form of thin-layer electrode on glassy carbon support, in 0.1M KOH solution, the prepared materials displayed high activity toward oxygen reduction reaction (ORR) in alkaline media, with onset potentials more positive than -0.10 V vs. SCE. The kinetics of O-2 reduction was found to be affected by both the specific surface area and the concentration of metal dopants. The ethanol tolerance of (Pt, Ru)-doped OMCs was found to be higher than that of common Pt/C ORR catalysts. Presented study provides a new route for the synthesis of active and selective ORR catalysts in alkaline media, being competitive with, or superior to, the existing ones in terms of performance and price. (C) 2014 Elsevier Ltd. All rights reserved.",
journal = "Electrochimica Acta",
title = "Incorporation of Pt, Ru and Pt-Ru nanoparticles into ordered mesoporous carbons for efficient oxygen reduction reaction in alkaline media",
volume = "153",
pages = "130-139",
doi = "10.1016/j.electacta.2014.11.080"
}

Stojmenović, M., Momčilović, M. Z., Gavrilov, N. M., Pašti, I. A., Mentus, S. V., Jokić, B. M.,& Babić, B. M.. (2015). Incorporation of Pt, Ru and Pt-Ru nanoparticles into ordered mesoporous carbons for efficient oxygen reduction reaction in alkaline media. in Electrochimica Acta, 153, 130-139.
https://doi.org/10.1016/j.electacta.2014.11.080

Stojmenović M, Momčilović MZ, Gavrilov NM, Pašti IA, Mentus SV, Jokić BM, Babić BM. Incorporation of Pt, Ru and Pt-Ru nanoparticles into ordered mesoporous carbons for efficient oxygen reduction reaction in alkaline media. in Electrochimica Acta. 2015;153:130-139.
doi:10.1016/j.electacta.2014.11.080 .

Stojmenović, Marija, Momčilović, Milan Z., Gavrilov, Nemanja M., Pašti, Igor A., Mentus, Slavko V., Jokić, Bojan M., Babić, Biljana M., "Incorporation of Pt, Ru and Pt-Ru nanoparticles into ordered mesoporous carbons for efficient oxygen reduction reaction in alkaline media" in Electrochimica Acta, 153 (2015):130-139,
https://doi.org/10.1016/j.electacta.2014.11.080 . .

TY  - JOUR
AU  - Pašti, Igor A.
AU  - Gavrilov, Nemanja M.
AU  - Dobrota, Ana S.
AU  - Momčilović, Milan Z.
AU  - Stojmenović, Marija
AU  - Topalov, Angel
AU  - Stanković, Dalibor M.
AU  - Babić, Biljana M.
AU  - Ćirić-Marjanović, Gordana N.
AU  - Mentus, Slavko V.
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/769
AB  - In order to elucidate the role of B, N, and P dopants in carbon materials on the kinetics of oxygen reduction reaction (ORR) and to provide a fair comparison of the effects of each dopant, a series of ordered mesoporous carbons (OMCs) with low concentration of heteroatoms ( LT 1 at%) has been prepared. Doped OMCs were characterized using X-ray photoelectron spectroscopy (XPS), inductively coupled plasma optical emission spectroscopy (ICP-OES), Raman spectroscopy, X-ray powder diffraction (XRD), and N-2 physisorption measurements. Comparative study of the ORR activity of these materials in alkaline solution was performed using rotating disk electrode voltammetry. The experiments evidenced that, compared to non-doped OMC, charge transfer kinetics was improved independently on the nature of the heteroatom. The decrease of the ORR overvoltage and the increase of the mass activity upon doping are similar for B and P and less prominent for N. On the other hand, OMCs doped with low levels of B and N were found to be selective for O-2 reduction to peroxide, while for P-doped OMCs, the apparent number of electrons consumed per O-2 molecule was up to 3.1. Experimental measurements were complemented by density functional theory (DFT) calculations.
T2  - Electrocatalysis
T1  - The Effects of a Low-Level Boron, Phosphorus, and Nitrogen Doping on the Oxygen Reduction Activity of Ordered Mesoporous Carbons
VL  - 6
IS  - 6
SP  - 498
EP  - 511
DO  - 10.1007/s12678-015-0271-0
ER  - 

@article{
author = "Pašti, Igor A. and Gavrilov, Nemanja M. and Dobrota, Ana S. and Momčilović, Milan Z. and Stojmenović, Marija and Topalov, Angel and Stanković, Dalibor M. and Babić, Biljana M. and Ćirić-Marjanović, Gordana N. and Mentus, Slavko V.",
year = "2015",
abstract = "In order to elucidate the role of B, N, and P dopants in carbon materials on the kinetics of oxygen reduction reaction (ORR) and to provide a fair comparison of the effects of each dopant, a series of ordered mesoporous carbons (OMCs) with low concentration of heteroatoms ( LT 1 at%) has been prepared. Doped OMCs were characterized using X-ray photoelectron spectroscopy (XPS), inductively coupled plasma optical emission spectroscopy (ICP-OES), Raman spectroscopy, X-ray powder diffraction (XRD), and N-2 physisorption measurements. Comparative study of the ORR activity of these materials in alkaline solution was performed using rotating disk electrode voltammetry. The experiments evidenced that, compared to non-doped OMC, charge transfer kinetics was improved independently on the nature of the heteroatom. The decrease of the ORR overvoltage and the increase of the mass activity upon doping are similar for B and P and less prominent for N. On the other hand, OMCs doped with low levels of B and N were found to be selective for O-2 reduction to peroxide, while for P-doped OMCs, the apparent number of electrons consumed per O-2 molecule was up to 3.1. Experimental measurements were complemented by density functional theory (DFT) calculations.",
journal = "Electrocatalysis",
title = "The Effects of a Low-Level Boron, Phosphorus, and Nitrogen Doping on the Oxygen Reduction Activity of Ordered Mesoporous Carbons",
volume = "6",
number = "6",
pages = "498-511",
doi = "10.1007/s12678-015-0271-0"
}

Pašti, I. A., Gavrilov, N. M., Dobrota, A. S., Momčilović, M. Z., Stojmenović, M., Topalov, A., Stanković, D. M., Babić, B. M., Ćirić-Marjanović, G. N.,& Mentus, S. V.. (2015). The Effects of a Low-Level Boron, Phosphorus, and Nitrogen Doping on the Oxygen Reduction Activity of Ordered Mesoporous Carbons. in Electrocatalysis, 6(6), 498-511.
https://doi.org/10.1007/s12678-015-0271-0

Pašti IA, Gavrilov NM, Dobrota AS, Momčilović MZ, Stojmenović M, Topalov A, Stanković DM, Babić BM, Ćirić-Marjanović GN, Mentus SV. The Effects of a Low-Level Boron, Phosphorus, and Nitrogen Doping on the Oxygen Reduction Activity of Ordered Mesoporous Carbons. in Electrocatalysis. 2015;6(6):498-511.
doi:10.1007/s12678-015-0271-0 .

Pašti, Igor A., Gavrilov, Nemanja M., Dobrota, Ana S., Momčilović, Milan Z., Stojmenović, Marija, Topalov, Angel, Stanković, Dalibor M., Babić, Biljana M., Ćirić-Marjanović, Gordana N., Mentus, Slavko V., "The Effects of a Low-Level Boron, Phosphorus, and Nitrogen Doping on the Oxygen Reduction Activity of Ordered Mesoporous Carbons" in Electrocatalysis, 6, no. 6 (2015):498-511,
https://doi.org/10.1007/s12678-015-0271-0 . .

TY  - JOUR
AU  - Vujković, Milica
AU  - Mitrić, Miodrag
AU  - Mentus, Slavko V.
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/599
AB  - The nanodispersed NaTi2(PO4)(3)/C composite containing 20-25 wt.% of in-situ formed carbon, was synthesized by gel combustion procedure followed by a heat treatment at 650, 700 and 750 degrees C. The samples calcined at 700 and 750 degrees C displayed crystalline nasicon structure. They were subjected to the investigation of intercalation/deintercalation kinetics in aqueous NaNO3 and LiNO3 solutions, using cyclic voltammetry and galvanostatic charging/discharging measurements. As regards to the effect of electrolyte composition, the reactions were evidenced to be roughly twice faster in sodium nitrate than in lithium nitrate solution. Among the samples treated at 700 and 750 degrees C, better performance was evidenced for the sample treated at lower temperature. Coulombic capacity in NaNO3 solution at charging rate 1C amounted to similar to 70 mAh g(-1) and similar to 55 mAh g(-1) for the sample calcined at 700 and 750 degrees C, respectively, and displayed surprisingly slight dependence on charging rate up to even 100C. (c) 2015 Elsevier B.V. All rights reserved.
T2  - Journal of Power Sources
T1  - High-rate intercalation capability of NaTi2(PO4)(3)/C composite in aqueous lithium and sodium nitrate solutions
VL  - 288
SP  - 176
EP  - 186
DO  - 10.1016/j.jpowsour.2015.04.132
ER  - 

@article{
author = "Vujković, Milica and Mitrić, Miodrag and Mentus, Slavko V.",
year = "2015",
abstract = "The nanodispersed NaTi2(PO4)(3)/C composite containing 20-25 wt.% of in-situ formed carbon, was synthesized by gel combustion procedure followed by a heat treatment at 650, 700 and 750 degrees C. The samples calcined at 700 and 750 degrees C displayed crystalline nasicon structure. They were subjected to the investigation of intercalation/deintercalation kinetics in aqueous NaNO3 and LiNO3 solutions, using cyclic voltammetry and galvanostatic charging/discharging measurements. As regards to the effect of electrolyte composition, the reactions were evidenced to be roughly twice faster in sodium nitrate than in lithium nitrate solution. Among the samples treated at 700 and 750 degrees C, better performance was evidenced for the sample treated at lower temperature. Coulombic capacity in NaNO3 solution at charging rate 1C amounted to similar to 70 mAh g(-1) and similar to 55 mAh g(-1) for the sample calcined at 700 and 750 degrees C, respectively, and displayed surprisingly slight dependence on charging rate up to even 100C. (c) 2015 Elsevier B.V. All rights reserved.",
journal = "Journal of Power Sources",
title = "High-rate intercalation capability of NaTi2(PO4)(3)/C composite in aqueous lithium and sodium nitrate solutions",
volume = "288",
pages = "176-186",
doi = "10.1016/j.jpowsour.2015.04.132"
}

Vujković, M., Mitrić, M.,& Mentus, S. V.. (2015). High-rate intercalation capability of NaTi2(PO4)(3)/C composite in aqueous lithium and sodium nitrate solutions. in Journal of Power Sources, 288, 176-186.
https://doi.org/10.1016/j.jpowsour.2015.04.132

Vujković M, Mitrić M, Mentus SV. High-rate intercalation capability of NaTi2(PO4)(3)/C composite in aqueous lithium and sodium nitrate solutions. in Journal of Power Sources. 2015;288:176-186.
doi:10.1016/j.jpowsour.2015.04.132 .

Vujković, Milica, Mitrić, Miodrag, Mentus, Slavko V., "High-rate intercalation capability of NaTi2(PO4)(3)/C composite in aqueous lithium and sodium nitrate solutions" in Journal of Power Sources, 288 (2015):176-186,
https://doi.org/10.1016/j.jpowsour.2015.04.132 . .

TY  - JOUR
AU  - Stojmenović, Marija
AU  - Zunic, M.
AU  - Gulicovski, Jelena J.
AU  - Bajuk-Bogdanović, Danica V.
AU  - Holclajtner-Antunović, Ivanka D.
AU  - Dodevski, Vladimir
AU  - Mentus, Slavko V.
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/450
AB  - The solid solutions of CeO2 with one or more rare-earth oxides among Yb2O3, Sm2O3, and Gd2O3 are synthesized by either modified glycine nitrate procedure (MGNP) or self-propagating reaction at room temperature (SPRT). The overall mole fraction of rare-earth oxide dopants was x = 0.2. The characterization was committed by XRPD, TEM, BET, and Raman Spectroscopy methods. According to XRPD and Raman spectroscopy, the obtained products presented the single-phase solid solutions with basic fluorite-type CeO2 structure, regardless on the number and the concentration of dopants. Both XRPD and TEM analysis evidenced the nanometer particle dimensions. The defect model was applied to calculate lattice parameters of single-, co-, and multi-doped solids. The sintering of the sample nanopowders was performed at 1550 A degrees C, in air atmosphere. The sintered samples were characterized by XRPD, SEM, and complex impedance methods. The sintering did not affect the concentration ratios of the constituents. The highest conductivity at 700 A degrees C amounting to 2.14 x 10(-2) and 1.92 x 10(-2) Omega(-1) cm(-1) was measured for the sample Ce0.8Sm0.08Gd0.12O2-delta, synthesized by SPRT and MGNP methods, respectively. The corresponding activation energies of conductivity, measured in the temperature range 500-700 A degrees C, amounted to 0.24 and 0.23 eV.
T2  - Journal of Materials Science
T1  - Structural, morphological, and electrical properties of doped ceria as a solid electrolyte for intermediate-temperature solid oxide fuel cells
VL  - 50
IS  - 10
SP  - 3781
EP  - 3794
DO  - 10.1007/s10853-015-8943-y
ER  - 

@article{
author = "Stojmenović, Marija and Zunic, M. and Gulicovski, Jelena J. and Bajuk-Bogdanović, Danica V. and Holclajtner-Antunović, Ivanka D. and Dodevski, Vladimir and Mentus, Slavko V.",
year = "2015",
abstract = "The solid solutions of CeO2 with one or more rare-earth oxides among Yb2O3, Sm2O3, and Gd2O3 are synthesized by either modified glycine nitrate procedure (MGNP) or self-propagating reaction at room temperature (SPRT). The overall mole fraction of rare-earth oxide dopants was x = 0.2. The characterization was committed by XRPD, TEM, BET, and Raman Spectroscopy methods. According to XRPD and Raman spectroscopy, the obtained products presented the single-phase solid solutions with basic fluorite-type CeO2 structure, regardless on the number and the concentration of dopants. Both XRPD and TEM analysis evidenced the nanometer particle dimensions. The defect model was applied to calculate lattice parameters of single-, co-, and multi-doped solids. The sintering of the sample nanopowders was performed at 1550 A degrees C, in air atmosphere. The sintered samples were characterized by XRPD, SEM, and complex impedance methods. The sintering did not affect the concentration ratios of the constituents. The highest conductivity at 700 A degrees C amounting to 2.14 x 10(-2) and 1.92 x 10(-2) Omega(-1) cm(-1) was measured for the sample Ce0.8Sm0.08Gd0.12O2-delta, synthesized by SPRT and MGNP methods, respectively. The corresponding activation energies of conductivity, measured in the temperature range 500-700 A degrees C, amounted to 0.24 and 0.23 eV.",
journal = "Journal of Materials Science",
title = "Structural, morphological, and electrical properties of doped ceria as a solid electrolyte for intermediate-temperature solid oxide fuel cells",
volume = "50",
number = "10",
pages = "3781-3794",
doi = "10.1007/s10853-015-8943-y"
}

Stojmenović, M., Zunic, M., Gulicovski, J. J., Bajuk-Bogdanović, D. V., Holclajtner-Antunović, I. D., Dodevski, V.,& Mentus, S. V.. (2015). Structural, morphological, and electrical properties of doped ceria as a solid electrolyte for intermediate-temperature solid oxide fuel cells. in Journal of Materials Science, 50(10), 3781-3794.
https://doi.org/10.1007/s10853-015-8943-y

Stojmenović M, Zunic M, Gulicovski JJ, Bajuk-Bogdanović DV, Holclajtner-Antunović ID, Dodevski V, Mentus SV. Structural, morphological, and electrical properties of doped ceria as a solid electrolyte for intermediate-temperature solid oxide fuel cells. in Journal of Materials Science. 2015;50(10):3781-3794.
doi:10.1007/s10853-015-8943-y .

Stojmenović, Marija, Zunic, M., Gulicovski, Jelena J., Bajuk-Bogdanović, Danica V., Holclajtner-Antunović, Ivanka D., Dodevski, Vladimir, Mentus, Slavko V., "Structural, morphological, and electrical properties of doped ceria as a solid electrolyte for intermediate-temperature solid oxide fuel cells" in Journal of Materials Science, 50, no. 10 (2015):3781-3794,
https://doi.org/10.1007/s10853-015-8943-y . .

TY  - JOUR
AU  - Stojmenović, Marija
AU  - Bošković, Snežana B.
AU  - Zunic, M.
AU  - Babić, Biljana M.
AU  - Matović, Branko
AU  - Bajuk-Bogdanović, Danica V.
AU  - Mentus, Slavko V.
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/400
AB  - A series of four different powders ceria doped Ce1-xErxO2-delta (0.05 LT = x LT = 0.20) were synthesized by applying self-propagating reaction at room temperature (SPRT method). SPRT procedure is based on the self-propagating room temperature reaction between metal nitrates and sodium hydroxide, wherein the reaction is spontaneous and terminates extremely fast. The method is known to assure very precise stoichiometry of the final product in comparison with a tailored composition. XRPD, Raman spectroscopy, TEM and BET measurements were used to characterize the nanopowders at room temperature. It was shown that all obtained powders were single phase solid solutions with a fluorite-type crystal structure and all powder particles have nanometric size (about 3-4 nm). Densification was performed at 1550 degrees C, in an air atmosphere for 2 h. XRPD, SEM and complex impedance method measurements were carried out on sintered samples. Single phase form was evidenced for each sintered materials. The best value of conductivity at 700 degrees C amounted to 1.10 x 10(-2) Omega(-1) cm(-1) for Ce0.85Er0.O-3(2-delta) sample. Corresponding activation energies of conductivity amounted to 0.28 eV in the temperature range 500-700 degrees C. (C) 2015 Elsevier B.V. All rights reserved.
T2  - Materials Chemistry and Physics
T1  - Studies on structural, morphological and electrical properties of Ce1-xErxO2-delta (x=0.05-0.20) as solid electrolyte for IT - SOFC
VL  - 153
SP  - 422
EP  - 431
DO  - 10.1016/j.matchemphys.2015.01.036
ER  - 

@article{
author = "Stojmenović, Marija and Bošković, Snežana B. and Zunic, M. and Babić, Biljana M. and Matović, Branko and Bajuk-Bogdanović, Danica V. and Mentus, Slavko V.",
year = "2015",
abstract = "A series of four different powders ceria doped Ce1-xErxO2-delta (0.05 LT = x LT = 0.20) were synthesized by applying self-propagating reaction at room temperature (SPRT method). SPRT procedure is based on the self-propagating room temperature reaction between metal nitrates and sodium hydroxide, wherein the reaction is spontaneous and terminates extremely fast. The method is known to assure very precise stoichiometry of the final product in comparison with a tailored composition. XRPD, Raman spectroscopy, TEM and BET measurements were used to characterize the nanopowders at room temperature. It was shown that all obtained powders were single phase solid solutions with a fluorite-type crystal structure and all powder particles have nanometric size (about 3-4 nm). Densification was performed at 1550 degrees C, in an air atmosphere for 2 h. XRPD, SEM and complex impedance method measurements were carried out on sintered samples. Single phase form was evidenced for each sintered materials. The best value of conductivity at 700 degrees C amounted to 1.10 x 10(-2) Omega(-1) cm(-1) for Ce0.85Er0.O-3(2-delta) sample. Corresponding activation energies of conductivity amounted to 0.28 eV in the temperature range 500-700 degrees C. (C) 2015 Elsevier B.V. All rights reserved.",
journal = "Materials Chemistry and Physics",
title = "Studies on structural, morphological and electrical properties of Ce1-xErxO2-delta (x=0.05-0.20) as solid electrolyte for IT - SOFC",
volume = "153",
pages = "422-431",
doi = "10.1016/j.matchemphys.2015.01.036"
}

Stojmenović, M., Bošković, S. B., Zunic, M., Babić, B. M., Matović, B., Bajuk-Bogdanović, D. V.,& Mentus, S. V.. (2015). Studies on structural, morphological and electrical properties of Ce1-xErxO2-delta (x=0.05-0.20) as solid electrolyte for IT - SOFC. in Materials Chemistry and Physics, 153, 422-431.
https://doi.org/10.1016/j.matchemphys.2015.01.036

Stojmenović M, Bošković SB, Zunic M, Babić BM, Matović B, Bajuk-Bogdanović DV, Mentus SV. Studies on structural, morphological and electrical properties of Ce1-xErxO2-delta (x=0.05-0.20) as solid electrolyte for IT - SOFC. in Materials Chemistry and Physics. 2015;153:422-431.
doi:10.1016/j.matchemphys.2015.01.036 .

Stojmenović, Marija, Bošković, Snežana B., Zunic, M., Babić, Biljana M., Matović, Branko, Bajuk-Bogdanović, Danica V., Mentus, Slavko V., "Studies on structural, morphological and electrical properties of Ce1-xErxO2-delta (x=0.05-0.20) as solid electrolyte for IT - SOFC" in Materials Chemistry and Physics, 153 (2015):422-431,
https://doi.org/10.1016/j.matchemphys.2015.01.036 . .

TY  - CONF
AU  - Vujković, Milica
AU  - Milenković, M.
AU  - Jevremović, Milutin
AU  - Gizdavić-Nikolaidis, Marija
AU  - Stanisavljev, Dragomir R.
AU  - Mentus, Slavko V.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9227
AB  - High conducting polyaniline (PANI) nanofibres deposited onto glassy
carbon support were studied in sulphuric (1mol dm-3 H2SO4) and
hydrochloric (1mol dm-3 HCl) acid by both potentiodynamic and complex
impedance methods. A large charge storage capacity was obtained in each
of investigated acid solutions, particularly in HCl one. For instance, specific
capacity amounting to 340 Fg-1 was observed potentiodynamically in 1mol
dm-3 HCl at a scan rate of 10 mVs-1.
PB  - Society of Physical Chemists of Serbia
C3  - Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
T1  - Pseudocapacitance behavior of polyaniline in aerated HC1 and H2SO4 solutions
VL  - E-17-P
UR  - https://hdl.handle.net/21.15107/rcub_vinar_9227
ER  - 

@conference{
author = "Vujković, Milica and Milenković, M. and Jevremović, Milutin and Gizdavić-Nikolaidis, Marija and Stanisavljev, Dragomir R. and Mentus, Slavko V.",
year = "2014",
abstract = "High conducting polyaniline (PANI) nanofibres deposited onto glassy
carbon support were studied in sulphuric (1mol dm-3 H2SO4) and
hydrochloric (1mol dm-3 HCl) acid by both potentiodynamic and complex
impedance methods. A large charge storage capacity was obtained in each
of investigated acid solutions, particularly in HCl one. For instance, specific
capacity amounting to 340 Fg-1 was observed potentiodynamically in 1mol
dm-3 HCl at a scan rate of 10 mVs-1.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry",
title = "Pseudocapacitance behavior of polyaniline in aerated HC1 and H2SO4 solutions",
volume = "E-17-P",
url = "https://hdl.handle.net/21.15107/rcub_vinar_9227"
}

Vujković, M., Milenković, M., Jevremović, M., Gizdavić-Nikolaidis, M., Stanisavljev, D. R.,& Mentus, S. V.. (2014). Pseudocapacitance behavior of polyaniline in aerated HC1 and H2SO4 solutions. in Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
Society of Physical Chemists of Serbia., E-17-P.
https://hdl.handle.net/21.15107/rcub_vinar_9227

Vujković M, Milenković M, Jevremović M, Gizdavić-Nikolaidis M, Stanisavljev DR, Mentus SV. Pseudocapacitance behavior of polyaniline in aerated HC1 and H2SO4 solutions. in Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry. 2014;E-17-P.
https://hdl.handle.net/21.15107/rcub_vinar_9227 .

Vujković, Milica, Milenković, M., Jevremović, Milutin, Gizdavić-Nikolaidis, Marija, Stanisavljev, Dragomir R., Mentus, Slavko V., "Pseudocapacitance behavior of polyaniline in aerated HC1 and H2SO4 solutions" in Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry, E-17-P (2014),
https://hdl.handle.net/21.15107/rcub_vinar_9227 .

TY  - JOUR
AU  - Momčilović, Milan Z.
AU  - Stojmenović, Marija
AU  - Gavrilov, Nemanja M.
AU  - Pašti, Igor A.
AU  - Mentus, Slavko V.
AU  - Babić, Biljana M.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5983
AB  - Ordered mesoporous carbon (OMC) was synthesized by an evaporation induced self-assembly method; under acidic conditions, with resorcinol as the carbon precursor and Pluronic F127 triblock copolymer (EO106PO70EO106) as a structure directing agent. The obtained OMC product was characterized by N-2 sorptometry, X-ray diffractometry and Raman spectroscopy. The mean pore radius of 2 nm and specific surface area of 712 m(2) g(-1) were found. The OMC sample was subjected to a complex electrochemical testing in order to check for its applicability in various energy conversion processes. For pure OMC, the charge storage properties and kinetics of oxygen reduction reaction (ORR) in alkaline solution were measured. The OMC sample delivered specific capacitance of 232 F g(-1) at 5 mV s(-1) with 83.6% capacitance retained at 100 mV s(-1). Effective ORR electrocatalysis by OMC in alkaline media was evidenced, with onset potential amounting to -0.10 V vs. saturated calomel electrode. A part of the OMC sample was used as a support of Pt nanoparticles, and examined as electrocatalyst for hydrogen evolution reaction (HOR) and ORR in acidic media. Reversible HOR kinetics was observed, while ORR performances were found to be competitive to the ones on other carbon-supported Pt electrocatalysts reported so far. A superb electrochemical behavior was correlated to physico-chemical properties of OMC. Described OMC stands out as a highly versatile material, which can be used to replace carbon materials developed for specific purposes, allowing rationalization of carbon-based technologies aimed for energy conversion purposes. (C) 2014 Elsevier Ltd. All rights reserved.
T2  - Electrochimica Acta
T1  - Complex electrochemical investigation of ordered mesoporous carbon synthesized by soft-templating method: charge storage and electrocatalytical or Pt-electrocatalyst supporting behavior
VL  - 125
SP  - 606
EP  - 614
DO  - 10.1016/j.electacta.2014.01.152
ER  - 

@article{
author = "Momčilović, Milan Z. and Stojmenović, Marija and Gavrilov, Nemanja M. and Pašti, Igor A. and Mentus, Slavko V. and Babić, Biljana M.",
year = "2014",
abstract = "Ordered mesoporous carbon (OMC) was synthesized by an evaporation induced self-assembly method; under acidic conditions, with resorcinol as the carbon precursor and Pluronic F127 triblock copolymer (EO106PO70EO106) as a structure directing agent. The obtained OMC product was characterized by N-2 sorptometry, X-ray diffractometry and Raman spectroscopy. The mean pore radius of 2 nm and specific surface area of 712 m(2) g(-1) were found. The OMC sample was subjected to a complex electrochemical testing in order to check for its applicability in various energy conversion processes. For pure OMC, the charge storage properties and kinetics of oxygen reduction reaction (ORR) in alkaline solution were measured. The OMC sample delivered specific capacitance of 232 F g(-1) at 5 mV s(-1) with 83.6% capacitance retained at 100 mV s(-1). Effective ORR electrocatalysis by OMC in alkaline media was evidenced, with onset potential amounting to -0.10 V vs. saturated calomel electrode. A part of the OMC sample was used as a support of Pt nanoparticles, and examined as electrocatalyst for hydrogen evolution reaction (HOR) and ORR in acidic media. Reversible HOR kinetics was observed, while ORR performances were found to be competitive to the ones on other carbon-supported Pt electrocatalysts reported so far. A superb electrochemical behavior was correlated to physico-chemical properties of OMC. Described OMC stands out as a highly versatile material, which can be used to replace carbon materials developed for specific purposes, allowing rationalization of carbon-based technologies aimed for energy conversion purposes. (C) 2014 Elsevier Ltd. All rights reserved.",
journal = "Electrochimica Acta",
title = "Complex electrochemical investigation of ordered mesoporous carbon synthesized by soft-templating method: charge storage and electrocatalytical or Pt-electrocatalyst supporting behavior",
volume = "125",
pages = "606-614",
doi = "10.1016/j.electacta.2014.01.152"
}

Momčilović, M. Z., Stojmenović, M., Gavrilov, N. M., Pašti, I. A., Mentus, S. V.,& Babić, B. M.. (2014). Complex electrochemical investigation of ordered mesoporous carbon synthesized by soft-templating method: charge storage and electrocatalytical or Pt-electrocatalyst supporting behavior. in Electrochimica Acta, 125, 606-614.
https://doi.org/10.1016/j.electacta.2014.01.152

Momčilović MZ, Stojmenović M, Gavrilov NM, Pašti IA, Mentus SV, Babić BM. Complex electrochemical investigation of ordered mesoporous carbon synthesized by soft-templating method: charge storage and electrocatalytical or Pt-electrocatalyst supporting behavior. in Electrochimica Acta. 2014;125:606-614.
doi:10.1016/j.electacta.2014.01.152 .

Momčilović, Milan Z., Stojmenović, Marija, Gavrilov, Nemanja M., Pašti, Igor A., Mentus, Slavko V., Babić, Biljana M., "Complex electrochemical investigation of ordered mesoporous carbon synthesized by soft-templating method: charge storage and electrocatalytical or Pt-electrocatalyst supporting behavior" in Electrochimica Acta, 125 (2014):606-614,
https://doi.org/10.1016/j.electacta.2014.01.152 . .

TY  - JOUR
AU  - Stojmenović, Marija
AU  - Bošković, Snežana B.
AU  - Zunic, M.
AU  - Varela, J. A.
AU  - Prekajski, Marija D.
AU  - Matović, Branko
AU  - Mentus, Slavko V.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6029
AB  - Multidoped nanosized ceria powders were prepared by either modified glycine nitrate procedure (MGNP) or self-propagating reaction at room temperature (SPRT). As the dopants to CeO2, trivalent rare earth oxides such as Nd2O3, Sm2O3, Gd2O3, Dy2O3 and Y2O3 were used, with the total molar fraction of 20%. The pressed powder pellets were subjected to the densification by sintering at 1500 degrees C, in an air atmosphere. A single-phase crystalline form was evidenced by X-ray diffractometry for both sintered materials. By means of complex impedance measurements, the conductivity of the sintered samples was determined as a function of temperature. At 700 degrees C, the conductivity amounted to 2.19 x 10(-2) and 1.40 x 10(-2) ohm(-1) cm(-1) for the SPRT and for the MGNP sample, respectively. The corresponding values of activation energies of conductivity amounted to 0.72 (MGNP) and 0.59 (SPRT) eV in the temperature range 550-700 degrees C. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
T2  - Ceramics International
T1  - Electrical properties of multidoped ceria
VL  - 40
IS  - 7
SP  - 9285
EP  - 9292
DO  - 10.1016/j.ceramint.2014.01.151
ER  - 

@article{
author = "Stojmenović, Marija and Bošković, Snežana B. and Zunic, M. and Varela, J. A. and Prekajski, Marija D. and Matović, Branko and Mentus, Slavko V.",
year = "2014",
abstract = "Multidoped nanosized ceria powders were prepared by either modified glycine nitrate procedure (MGNP) or self-propagating reaction at room temperature (SPRT). As the dopants to CeO2, trivalent rare earth oxides such as Nd2O3, Sm2O3, Gd2O3, Dy2O3 and Y2O3 were used, with the total molar fraction of 20%. The pressed powder pellets were subjected to the densification by sintering at 1500 degrees C, in an air atmosphere. A single-phase crystalline form was evidenced by X-ray diffractometry for both sintered materials. By means of complex impedance measurements, the conductivity of the sintered samples was determined as a function of temperature. At 700 degrees C, the conductivity amounted to 2.19 x 10(-2) and 1.40 x 10(-2) ohm(-1) cm(-1) for the SPRT and for the MGNP sample, respectively. The corresponding values of activation energies of conductivity amounted to 0.72 (MGNP) and 0.59 (SPRT) eV in the temperature range 550-700 degrees C. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.",
journal = "Ceramics International",
title = "Electrical properties of multidoped ceria",
volume = "40",
number = "7",
pages = "9285-9292",
doi = "10.1016/j.ceramint.2014.01.151"
}

Stojmenović, M., Bošković, S. B., Zunic, M., Varela, J. A., Prekajski, M. D., Matović, B.,& Mentus, S. V.. (2014). Electrical properties of multidoped ceria. in Ceramics International, 40(7), 9285-9292.
https://doi.org/10.1016/j.ceramint.2014.01.151

Stojmenović M, Bošković SB, Zunic M, Varela JA, Prekajski MD, Matović B, Mentus SV. Electrical properties of multidoped ceria. in Ceramics International. 2014;40(7):9285-9292.
doi:10.1016/j.ceramint.2014.01.151 .

Stojmenović, Marija, Bošković, Snežana B., Zunic, M., Varela, J. A., Prekajski, Marija D., Matović, Branko, Mentus, Slavko V., "Electrical properties of multidoped ceria" in Ceramics International, 40, no. 7 (2014):9285-9292,
https://doi.org/10.1016/j.ceramint.2014.01.151 . .

TY  - JOUR
AU  - Vujković, Milica
AU  - Šljukić-Paunković, Biljana
AU  - Stojković-Simatović, Ivana
AU  - Mitrić, Miodrag
AU  - Sequeira, C. A. C.
AU  - Mentus, Slavko V.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/285
AB  - Single phase nanobelt-like Na1.2V3O8 was synthesized by precipitation from aqueous solution of V2O5, H2O2 and NaOH, and subsequent annealing at 400 degrees C. The product was characterized by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. As measured by both galvanostatic charging/discharging and cyclic voltammetry methods, in air-equilibrated equeous electrolyte solutions containing nitrates of lithium, sodium and magnesium, this compound displayed fast inter- calation/deintercalation reactions. The galvanostatic charging and discharging curves observed at rates ranging 500-7000 mA g(-1), did not display clear plateaus characteristic of phase changes. The discharging capacities were found to range 101-35, 55-17 and 67-22 mAh g(-1) for Li, Na and Mg intercalation, respectively. By cyclic voltammetry, for the sweep rates increasing in the range 5-400 mV s(-1) (roughly 9-700 C), the capacity was found to decrease within the limits 63-35 mAh g(-1) for Li+ intercalation, and 40 -11 mAh g(-1) for Na+ and Mg2+ intercalation, respectively. By analyzing the dependence log (current) versus log (sweep rate), the interval of potentials corresponding to preferably diffusion control of intercalation/deintercalation processes was determined. (C) 2014 Elsevier Ltd. All rights reserved.
T2  - Electrochimica Acta
T1  - Versatile insertion capability of Na1.2V3O8 nanobelts in aqueous electrolyte solutions
VL  - 147
SP  - 167
EP  - 175
DO  - 10.1016/j.electacta.2014.08.137
ER  - 

@article{
author = "Vujković, Milica and Šljukić-Paunković, Biljana and Stojković-Simatović, Ivana and Mitrić, Miodrag and Sequeira, C. A. C. and Mentus, Slavko V.",
year = "2014",
abstract = "Single phase nanobelt-like Na1.2V3O8 was synthesized by precipitation from aqueous solution of V2O5, H2O2 and NaOH, and subsequent annealing at 400 degrees C. The product was characterized by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. As measured by both galvanostatic charging/discharging and cyclic voltammetry methods, in air-equilibrated equeous electrolyte solutions containing nitrates of lithium, sodium and magnesium, this compound displayed fast inter- calation/deintercalation reactions. The galvanostatic charging and discharging curves observed at rates ranging 500-7000 mA g(-1), did not display clear plateaus characteristic of phase changes. The discharging capacities were found to range 101-35, 55-17 and 67-22 mAh g(-1) for Li, Na and Mg intercalation, respectively. By cyclic voltammetry, for the sweep rates increasing in the range 5-400 mV s(-1) (roughly 9-700 C), the capacity was found to decrease within the limits 63-35 mAh g(-1) for Li+ intercalation, and 40 -11 mAh g(-1) for Na+ and Mg2+ intercalation, respectively. By analyzing the dependence log (current) versus log (sweep rate), the interval of potentials corresponding to preferably diffusion control of intercalation/deintercalation processes was determined. (C) 2014 Elsevier Ltd. All rights reserved.",
journal = "Electrochimica Acta",
title = "Versatile insertion capability of Na1.2V3O8 nanobelts in aqueous electrolyte solutions",
volume = "147",
pages = "167-175",
doi = "10.1016/j.electacta.2014.08.137"
}

Vujković, M., Šljukić-Paunković, B., Stojković-Simatović, I., Mitrić, M., Sequeira, C. A. C.,& Mentus, S. V.. (2014). Versatile insertion capability of Na1.2V3O8 nanobelts in aqueous electrolyte solutions. in Electrochimica Acta, 147, 167-175.
https://doi.org/10.1016/j.electacta.2014.08.137

Vujković M, Šljukić-Paunković B, Stojković-Simatović I, Mitrić M, Sequeira CAC, Mentus SV. Versatile insertion capability of Na1.2V3O8 nanobelts in aqueous electrolyte solutions. in Electrochimica Acta. 2014;147:167-175.
doi:10.1016/j.electacta.2014.08.137 .

Vujković, Milica, Šljukić-Paunković, Biljana, Stojković-Simatović, Ivana, Mitrić, Miodrag, Sequeira, C. A. C., Mentus, Slavko V., "Versatile insertion capability of Na1.2V3O8 nanobelts in aqueous electrolyte solutions" in Electrochimica Acta, 147 (2014):167-175,
https://doi.org/10.1016/j.electacta.2014.08.137 . .

TY  - JOUR
AU  - Lazarević-Pašti, Tamara
AU  - Bondžić, Aleksandra M.
AU  - Pašti, Igor A.
AU  - Mentus, Slavko V.
AU  - Vasić, Vesna M.
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5410
AB  - Organophosphorous pesticide diazinon was indirectly oxidized to diazoxon by means of electrogenerated Cl-2, Br-2 or I-2 under galvanostatic conditions using rotating glassy carbon disk electrode. The rate of oxidation was the highest in the case of electrogenerated Br-2. In the presence of electrogenerated Br-2 diazinon was completely converted to diazoxon after 15 min of electrochemical treatment at all concentrations investigated. On the basis of thermodynamic and kinetic arguments it was showed that diazinon oxidation is governed by both kinetics and speciation of halogen species. Diazoxon is rapidly formed during its reaction with active oxidant species, while formed diazoxon is being stable and not degraded at appreciable rate by reactive halogen species. Described oxidation procedure was used as a pre-step for diazinon detection using AChE test coupled with optical detection. Diazinon detection limit was reduced by three orders of magnitude compared to unoxidized diazinon. This enabled diazinon detection at the lowest possible concentration using described methodology, as determined by diazoxon detection limit. (C) 2013 Elsevier B.V. All rights reserved.
T2  - Journal of Electroanalytical Chemistry
T1  - Electrochemical oxidation of diazinon in aqueous solutions via electrogenerated halogens - Diazinon fate and implications for its detection
VL  - 692
SP  - 40
EP  - 45
DO  - 10.1016/j.jelechem.2013.01.005
ER  - 

@article{
author = "Lazarević-Pašti, Tamara and Bondžić, Aleksandra M. and Pašti, Igor A. and Mentus, Slavko V. and Vasić, Vesna M.",
year = "2013",
abstract = "Organophosphorous pesticide diazinon was indirectly oxidized to diazoxon by means of electrogenerated Cl-2, Br-2 or I-2 under galvanostatic conditions using rotating glassy carbon disk electrode. The rate of oxidation was the highest in the case of electrogenerated Br-2. In the presence of electrogenerated Br-2 diazinon was completely converted to diazoxon after 15 min of electrochemical treatment at all concentrations investigated. On the basis of thermodynamic and kinetic arguments it was showed that diazinon oxidation is governed by both kinetics and speciation of halogen species. Diazoxon is rapidly formed during its reaction with active oxidant species, while formed diazoxon is being stable and not degraded at appreciable rate by reactive halogen species. Described oxidation procedure was used as a pre-step for diazinon detection using AChE test coupled with optical detection. Diazinon detection limit was reduced by three orders of magnitude compared to unoxidized diazinon. This enabled diazinon detection at the lowest possible concentration using described methodology, as determined by diazoxon detection limit. (C) 2013 Elsevier B.V. All rights reserved.",
journal = "Journal of Electroanalytical Chemistry",
title = "Electrochemical oxidation of diazinon in aqueous solutions via electrogenerated halogens - Diazinon fate and implications for its detection",
volume = "692",
pages = "40-45",
doi = "10.1016/j.jelechem.2013.01.005"
}

Lazarević-Pašti, T., Bondžić, A. M., Pašti, I. A., Mentus, S. V.,& Vasić, V. M.. (2013). Electrochemical oxidation of diazinon in aqueous solutions via electrogenerated halogens - Diazinon fate and implications for its detection. in Journal of Electroanalytical Chemistry, 692, 40-45.
https://doi.org/10.1016/j.jelechem.2013.01.005

Lazarević-Pašti T, Bondžić AM, Pašti IA, Mentus SV, Vasić VM. Electrochemical oxidation of diazinon in aqueous solutions via electrogenerated halogens - Diazinon fate and implications for its detection. in Journal of Electroanalytical Chemistry. 2013;692:40-45.
doi:10.1016/j.jelechem.2013.01.005 .

Lazarević-Pašti, Tamara, Bondžić, Aleksandra M., Pašti, Igor A., Mentus, Slavko V., Vasić, Vesna M., "Electrochemical oxidation of diazinon in aqueous solutions via electrogenerated halogens - Diazinon fate and implications for its detection" in Journal of Electroanalytical Chemistry, 692 (2013):40-45,
https://doi.org/10.1016/j.jelechem.2013.01.005 . .