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Structural effects in electrocatalysis: Oxygen reduction on the gold single crystal electrodes with (110) and (111) orientations

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1984
Authors
Marković, Nenad M.
Adžić, Radoslav R.
Vešović, V. B.
Article (Published version)
Metadata
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Abstract
The kinetics of O2 reduction on the Au (110) and the Au (111) single crystal electrodes have been examined using the rotating disc method. The quality of the surfaces has been determined by Auger electron spectroscopy and LEED. Two electrons are exchanged in O2 reduction on both surfaces. HO2 appears completely stable on the (111) face. The half-wave potential for the Au (110) surface is ca. 70 mV more positive than that for the Au (111) face. The cathodic and anodic kinetic data for the O2/HO2 and HO2−/OH− couples support the mechanism with the following initial two steps: O2+e−→O2−(ads) 2 O2−(ads)+H2O→HO2−+O2+OH− Slow further reduction of HO2−, which occurs on the Au (110) face, is controlled by a chemical reaction. The higher activity of the Au (110) face is explained by some reduction of HO2− on a partially discharged OH−, whose adsorption on the Au (111) face is negligible.
Keywords:
Auger electron spectroscopy / rotating disc method / O2 reduction / Kinetics / single crystal electrodes
Source:
Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1984, 165, 1-2, 121-133
Publisher:
  • Elsevier
Funding / projects:
  • Research Fund of Serbia, Serbian Academy of Sciences, Yugoslavia
  • Department of Energy, Washington, U.S.A., Contract Energy 427

DOI: 10.1016/S0022-0728(84)80091-1

ISSN: 0022-0728; 1572-6657

Scopus: 2-s2.0-0021425008
[ Google Scholar ]
139
URI
https://cer.ihtm.bg.ac.rs/handle/123456789/4196
Collections
  • Radovi istraživača / Researchers' publications
Institution/Community
IHTM
TY  - JOUR
AU  - Marković, Nenad M.
AU  - Adžić, Radoslav R.
AU  - Vešović, V. B.
PY  - 1984
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4196
AB  - The kinetics of O2 reduction on the Au (110) and the Au (111) single crystal electrodes have been examined using the rotating disc method. The quality of the surfaces has been determined by Auger electron spectroscopy and LEED. Two electrons are exchanged in O2 reduction on both surfaces. HO2 appears completely stable on the (111) face. The half-wave potential for the Au (110) surface is ca. 70 mV more positive than that for the Au (111) face. The cathodic and anodic kinetic data for the O2/HO2 and HO2−/OH− couples support the mechanism with the following initial two steps: O2+e−→O2−(ads) 2 O2−(ads)+H2O→HO2−+O2+OH− Slow further reduction of HO2−, which occurs on the Au (110) face, is controlled by a chemical reaction. The higher activity of the Au (110) face is explained by some reduction of HO2− on a partially discharged OH−, whose adsorption on the Au (111) face is negligible.
PB  - Elsevier
T2  - Journal of Electroanalytical Chemistry and Interfacial Electrochemistry
T1  - Structural effects in electrocatalysis: Oxygen reduction on the gold single crystal electrodes with (110) and (111) orientations
VL  - 165
IS  - 1-2
SP  - 121
EP  - 133
DO  - 10.1016/S0022-0728(84)80091-1
ER  - 
@article{
author = "Marković, Nenad M. and Adžić, Radoslav R. and Vešović, V. B.",
year = "1984",
abstract = "The kinetics of O2 reduction on the Au (110) and the Au (111) single crystal electrodes have been examined using the rotating disc method. The quality of the surfaces has been determined by Auger electron spectroscopy and LEED. Two electrons are exchanged in O2 reduction on both surfaces. HO2 appears completely stable on the (111) face. The half-wave potential for the Au (110) surface is ca. 70 mV more positive than that for the Au (111) face. The cathodic and anodic kinetic data for the O2/HO2 and HO2−/OH− couples support the mechanism with the following initial two steps: O2+e−→O2−(ads) 2 O2−(ads)+H2O→HO2−+O2+OH− Slow further reduction of HO2−, which occurs on the Au (110) face, is controlled by a chemical reaction. The higher activity of the Au (110) face is explained by some reduction of HO2− on a partially discharged OH−, whose adsorption on the Au (111) face is negligible.",
publisher = "Elsevier",
journal = "Journal of Electroanalytical Chemistry and Interfacial Electrochemistry",
title = "Structural effects in electrocatalysis: Oxygen reduction on the gold single crystal electrodes with (110) and (111) orientations",
volume = "165",
number = "1-2",
pages = "121-133",
doi = "10.1016/S0022-0728(84)80091-1"
}
Marković, N. M., Adžić, R. R.,& Vešović, V. B.. (1984). Structural effects in electrocatalysis: Oxygen reduction on the gold single crystal electrodes with (110) and (111) orientations. in Journal of Electroanalytical Chemistry and Interfacial Electrochemistry
Elsevier., 165(1-2), 121-133.
https://doi.org/10.1016/S0022-0728(84)80091-1
Marković NM, Adžić RR, Vešović VB. Structural effects in electrocatalysis: Oxygen reduction on the gold single crystal electrodes with (110) and (111) orientations. in Journal of Electroanalytical Chemistry and Interfacial Electrochemistry. 1984;165(1-2):121-133.
doi:10.1016/S0022-0728(84)80091-1 .
Marković, Nenad M., Adžić, Radoslav R., Vešović, V. B., "Structural effects in electrocatalysis: Oxygen reduction on the gold single crystal electrodes with (110) and (111) orientations" in Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 165, no. 1-2 (1984):121-133,
https://doi.org/10.1016/S0022-0728(84)80091-1 . .

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