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.
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",
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, 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. in Macedonian Journal of Chemistry and Chemical Engineering
Society of Chemists and Technologists of Macedonia., 38(1), 39-48.
https://doi.org/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. in Macedonian Journal of Chemistry and Chemical Engineering. 2019;38(1):39-48.
doi: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" in Macedonian Journal of Chemistry and Chemical Engineering, 38, no. 1 (2019):39-48,
https://doi.org/10.20450/mjcce.2019.1623 . .
,