TY  - JOUR
AU  - Gavrilov, Nemanja
AU  - Momcilovic, Milan
AU  - Dobrota, Ana S.
AU  - Stanković, Dalibor
AU  - Jokić, Bojan
AU  - Babić, Biljana
AU  - Skorodumova, Natalia V.
AU  - Mentus, Slavko V.
AU  - Pasti, Igor A.
PY  - 2018
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/2088
AB  - The incorporation of trace amounts ( lt  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 N-2-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 O-2 in 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 O-2 molecule and contribute to the decomposition of peroxide.
PB  - Elsevier Science Sa, Lausanne
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 and Momcilovic, Milan and Dobrota, Ana S. and Stanković, Dalibor and Jokić, Bojan and Babić, Biljana and Skorodumova, Natalia V. and Mentus, Slavko V. and Pasti, Igor A.",
year = "2018",
abstract = "The incorporation of trace amounts ( lt  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 N-2-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 O-2 in 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 O-2 molecule and contribute to the decomposition of peroxide.",
publisher = "Elsevier Science Sa, Lausanne",
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., Momcilovic, M., Dobrota, A. S., Stanković, D., Jokić, B., Babić, B., Skorodumova, N. V., Mentus, S. V.,& Pasti, 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
Elsevier Science Sa, Lausanne., 349, 511-521.
https://doi.org/10.1016/j.surfcoat.2018.06.008

Gavrilov N, Momcilovic M, Dobrota AS, Stanković D, Jokić B, Babić B, Skorodumova NV, Mentus SV, Pasti 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, Momcilovic, Milan, Dobrota, Ana S., Stanković, Dalibor, Jokić, Bojan, Babić, Biljana, Skorodumova, Natalia V., Mentus, Slavko V., Pasti, 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  - Pasti, Igor A.
AU  - Gavrilov, Nemanja
AU  - Dobrota, Ana S.
AU  - Momcilovic, Milan
AU  - Stojmenovic, Marija
AU  - Topalov, Angel
AU  - Stanković, Dalibor
AU  - Babić, Biljana
AU  - Ćirić-Marjanović, Gordana
AU  - Mentus, Slavko V.
PY  - 2015
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/1980
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.
PB  - Springer, New York
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 = "Pasti, Igor A. and Gavrilov, Nemanja and Dobrota, Ana S. and Momcilovic, Milan and Stojmenovic, Marija and Topalov, Angel and Stanković, Dalibor and Babić, Biljana and Ćirić-Marjanović, Gordana 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.",
publisher = "Springer, New York",
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"
}

Pasti, I. A., Gavrilov, N., Dobrota, A. S., Momcilovic, M., Stojmenovic, M., Topalov, A., Stanković, D., Babić, B., Ćirić-Marjanović, G.,& 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
Springer, New York., 6(6), 498-511.
https://doi.org/10.1007/s12678-015-0271-0

Pasti IA, Gavrilov N, Dobrota AS, Momcilovic M, Stojmenovic M, Topalov A, Stanković D, Babić B, Ćirić-Marjanović G, 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 .

Pasti, Igor A., Gavrilov, Nemanja, Dobrota, Ana S., Momcilovic, Milan, Stojmenovic, Marija, Topalov, Angel, Stanković, Dalibor, Babić, Biljana, Ćirić-Marjanović, Gordana, 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 . .