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Formation of niobium oxides by electrolysis from acidic aqueous solutions on glassy carbon

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2019
1623-5500-1-PB.pdf (1.198Mb)
Аутори
Vukićević, Nataša
Cvetković, Vesna S.
Jovanović, Ljiljana S.
Pavlović, Miroslav M.
Jovićević, Jovan N.
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Апстракт
In this study niobium oxide films were formed without peroxo-precursors from three different mixed acidic aqueous solutions on glassy carbon. Linear sweep voltammetry and potential step were techniques used for electrochemical experiments. The simultaneous and consecutive electrochemical reduction of water, nitrate and sulphate ions provided an alkaline environment with oxygen in the near vicinity of the working cathode, which in combination with the present niobium ions, produced niobium oxides and/or oxyhydroxides on the glassy carbon substrate. The formed deposits were analyzed using scanning electron microscopy and energy dispersive spectroscopy and appear to consist of NbO, NbO2 and Nb2O5. Both the niobium and acid concentration of the electrolytes used influenced the morphology and particle size of the deposits. The formation of niobium-fluoride and hydrogen-niobiumoxide complexes is addressed.
Кључне речи:
electrochemical deposition / niobium oxides / acidic solution / glassy carbon
Извор:
Macedonian Journal of Chemistry and Chemical Engineering, 2019, 38, 1, 39-48
Издавач:
  • Society of Chemists and Technologists of Macedonia
Пројекти:
  • Нов приступ дизајнирању материјала за конверзију и складиштење енергије (RS-172060)

DOI: 10.20450/mjcce.2019.1623

ISSN: 1857-5625; 1857-5552

WoS: 000477950400006

Scopus: 2-s2.0-85070493664
[ Google Scholar ]
URI
http://cer.ihtm.bg.ac.rs/handle/123456789/3358
Колекције
  • Radovi istraživača / Researchers' publications
Институција
IHTM
TY  - JOUR
AU  - Vukićević, Nataša
AU  - Cvetković, Vesna S.
AU  - Jovanović, Ljiljana S.
AU  - Pavlović, Miroslav M.
AU  - Jovićević, Jovan N.
PY  - 2019
UR  - http://cer.ihtm.bg.ac.rs/handle/123456789/3358
AB  - In this study niobium oxide films were formed without peroxo-precursors from three different mixed acidic aqueous solutions on glassy carbon. Linear sweep voltammetry and potential step were techniques used for electrochemical experiments. The simultaneous and consecutive electrochemical reduction of water, nitrate and sulphate ions provided an alkaline environment with oxygen in the near vicinity of the working cathode, which in combination with the present niobium ions, produced niobium oxides and/or oxyhydroxides on the glassy carbon substrate. The formed deposits were analyzed using scanning electron microscopy and energy dispersive spectroscopy and appear to consist of NbO, NbO2 and Nb2O5. Both the niobium and acid concentration of the electrolytes used influenced the morphology and particle size of the deposits. The formation of niobium-fluoride and hydrogen-niobiumoxide complexes is addressed.
PB  - Society of Chemists and Technologists of Macedonia
T2  - Macedonian Journal of Chemistry and Chemical Engineering
T1  - Formation of niobium oxides by electrolysis from acidic aqueous solutions on glassy carbon
VL  - 38
IS  - 1
SP  - 39
EP  - 48
DO  - 10.20450/mjcce.2019.1623
ER  - 
@article{
author = "Vukićević, Nataša and Cvetković, Vesna S. and Jovanović, Ljiljana S. and Pavlović, Miroslav M. and Jovićević, Jovan N.",
year = "2019",
url = "http://cer.ihtm.bg.ac.rs/handle/123456789/3358",
abstract = "In this study niobium oxide films were formed without peroxo-precursors from three different mixed acidic aqueous solutions on glassy carbon. Linear sweep voltammetry and potential step were techniques used for electrochemical experiments. The simultaneous and consecutive electrochemical reduction of water, nitrate and sulphate ions provided an alkaline environment with oxygen in the near vicinity of the working cathode, which in combination with the present niobium ions, produced niobium oxides and/or oxyhydroxides on the glassy carbon substrate. The formed deposits were analyzed using scanning electron microscopy and energy dispersive spectroscopy and appear to consist of NbO, NbO2 and Nb2O5. Both the niobium and acid concentration of the electrolytes used influenced the morphology and particle size of the deposits. The formation of niobium-fluoride and hydrogen-niobiumoxide complexes is addressed.",
publisher = "Society of Chemists and Technologists of Macedonia",
journal = "Macedonian Journal of Chemistry and Chemical Engineering",
title = "Formation of niobium oxides by electrolysis from acidic aqueous solutions on glassy carbon",
volume = "38",
number = "1",
pages = "39-48",
doi = "10.20450/mjcce.2019.1623"
}
Vukićević N, Cvetković VS, Jovanović LS, Pavlović MM, Jovićević JN. Formation of niobium oxides by electrolysis from acidic aqueous solutions on glassy carbon. Macedonian Journal of Chemistry and Chemical Engineering. 2019;38(1):39-48
Vukićević, N., Cvetković, V. S., Jovanović, L. S., Pavlović, M. M.,& Jovićević, J. N. (2019). Formation of niobium oxides by electrolysis from acidic aqueous solutions on glassy carbon.
Macedonian Journal of Chemistry and Chemical EngineeringSociety of Chemists and Technologists of Macedonia., 38(1), 39-48.
https://doi.org/10.20450/mjcce.2019.1623
Vukićević Nataša, Cvetković Vesna S., Jovanović Ljiljana S., Pavlović Miroslav M., Jovićević Jovan N., "Formation of niobium oxides by electrolysis from acidic aqueous solutions on glassy carbon" 38, no. 1 (2019):39-48,
https://doi.org/10.20450/mjcce.2019.1623 .

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