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The electrocatalytic properties of the oxides of noble metals in the electro-oxidation of some organic molecules

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1997
Authors
Avramov Ivić, Milka
Jovanović, Vladislava M.
Vlajnić, Goran
Popić, Jovan P.
Article (Published version)
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Abstract
The electro-oxidation of organic compounds on gold and silver electrodes can occur either in a potential range more negative than that where the metal oxides are formed or within the more positive range where the surface is covered by oxides. Oxidation of methanol on gold electrodes proceeds in the potential range where the electrode is not covered with oxide and only at the slowest scan speed used (0.1 mV s-1). At the same scan rate the Au(110) orientation as well as the Au(111) orientation favor the catalytic activation of the anodic electro-oxidation of methanol in the region of oxide formation. Oxidation of malic acid on a gold electrode proceeds only in the region where the electrode is covered by gold oxide. On a glassy carbon electrode modified by silver, reactivation of the formaldehyde anodic oxidation is observed in the region where the electrode is covered by silver oxide. On the bulk silver electrode and on the glassy carbon electrode modified by silver, alcohols such as me...thanol, ethylene glycol and glycerol are oxidized only in the region where the electrodes are covered by silver oxide. On such electrodes the observed anodic currents increase in the sequence: methanol < ethylene glycol < glycerol, and in the same sequence the corresponding peaks occur at more negative potentials.

Keywords:
Electrochemical electrodes / Glassy carbon electrodes / Anodic oxidation / Carboxylic acids / Catalysis / Electro-oxidation / Electrocatalysis / Electrochemistry
Source:
Journal of Electroanalytical Chemistry, 1997, 423, 1-2, 119-124
Publisher:
  • Elsevier

DOI: 10.1016/S0022-0728(96)04787-0

ISSN: 1572-6657

Scopus: 2-s2.0-0031062169
[ Google Scholar ]
123
URI
https://cer.ihtm.bg.ac.rs/handle/123456789/3665
Collections
  • Radovi istraživača / Researchers' publications
Institution/Community
IHTM
TY  - JOUR
AU  - Avramov Ivić, Milka
AU  - Jovanović, Vladislava M.
AU  - Vlajnić, Goran
AU  - Popić, Jovan P.
PY  - 1997
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3665
AB  - The electro-oxidation of organic compounds on gold and silver electrodes can occur either in a potential range more negative than that where the metal oxides are formed or within the more positive range where the surface is covered by oxides. Oxidation of methanol on gold electrodes proceeds in the potential range where the electrode is not covered with oxide and only at the slowest scan speed used (0.1 mV s-1). At the same scan rate the Au(110) orientation as well as the Au(111) orientation favor the catalytic activation of the anodic electro-oxidation of methanol in the region of oxide formation. Oxidation of malic acid on a gold electrode proceeds only in the region where the electrode is covered by gold oxide. On a glassy carbon electrode modified by silver, reactivation of the formaldehyde anodic oxidation is observed in the region where the electrode is covered by silver oxide. On the bulk silver electrode and on the glassy carbon electrode modified by silver, alcohols such as methanol, ethylene glycol and glycerol are oxidized only in the region where the electrodes are covered by silver oxide. On such electrodes the observed anodic currents increase in the sequence: methanol < ethylene glycol < glycerol, and in the same sequence the corresponding peaks occur at more negative potentials.
PB  - Elsevier
T2  - Journal of Electroanalytical Chemistry
T1  - The electrocatalytic properties of the oxides of noble metals in the electro-oxidation of some organic molecules
VL  - 423
IS  - 1-2
SP  - 119
EP  - 124
DO  - 10.1016/S0022-0728(96)04787-0
ER  - 
@article{
author = "Avramov Ivić, Milka and Jovanović, Vladislava M. and Vlajnić, Goran and Popić, Jovan P.",
year = "1997",
abstract = "The electro-oxidation of organic compounds on gold and silver electrodes can occur either in a potential range more negative than that where the metal oxides are formed or within the more positive range where the surface is covered by oxides. Oxidation of methanol on gold electrodes proceeds in the potential range where the electrode is not covered with oxide and only at the slowest scan speed used (0.1 mV s-1). At the same scan rate the Au(110) orientation as well as the Au(111) orientation favor the catalytic activation of the anodic electro-oxidation of methanol in the region of oxide formation. Oxidation of malic acid on a gold electrode proceeds only in the region where the electrode is covered by gold oxide. On a glassy carbon electrode modified by silver, reactivation of the formaldehyde anodic oxidation is observed in the region where the electrode is covered by silver oxide. On the bulk silver electrode and on the glassy carbon electrode modified by silver, alcohols such as methanol, ethylene glycol and glycerol are oxidized only in the region where the electrodes are covered by silver oxide. On such electrodes the observed anodic currents increase in the sequence: methanol < ethylene glycol < glycerol, and in the same sequence the corresponding peaks occur at more negative potentials.",
publisher = "Elsevier",
journal = "Journal of Electroanalytical Chemistry",
title = "The electrocatalytic properties of the oxides of noble metals in the electro-oxidation of some organic molecules",
volume = "423",
number = "1-2",
pages = "119-124",
doi = "10.1016/S0022-0728(96)04787-0"
}
Avramov Ivić, M., Jovanović, V. M., Vlajnić, G.,& Popić, J. P.. (1997). The electrocatalytic properties of the oxides of noble metals in the electro-oxidation of some organic molecules. in Journal of Electroanalytical Chemistry
Elsevier., 423(1-2), 119-124.
https://doi.org/10.1016/S0022-0728(96)04787-0
Avramov Ivić M, Jovanović VM, Vlajnić G, Popić JP. The electrocatalytic properties of the oxides of noble metals in the electro-oxidation of some organic molecules. in Journal of Electroanalytical Chemistry. 1997;423(1-2):119-124.
doi:10.1016/S0022-0728(96)04787-0 .
Avramov Ivić, Milka, Jovanović, Vladislava M., Vlajnić, Goran, Popić, Jovan P., "The electrocatalytic properties of the oxides of noble metals in the electro-oxidation of some organic molecules" in Journal of Electroanalytical Chemistry, 423, no. 1-2 (1997):119-124,
https://doi.org/10.1016/S0022-0728(96)04787-0 . .

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