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Structural effects in electrocatalysis. Oxygen reduction on the Au (100) single crystal electrode

Samo za registrovane korisnike
1984
Autori
Adžić, Radoslav R.
Marković, Nenad M.
Vešović, V. B.
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentu
Apstrakt
The kinetics of O2 reduction on the Au (100) single crystal electrode have been examined in alkaline electrolytes using the rotating dise method. A comparison has been made with the Au (110) and Au (111) surfaces. The quality of the surfaces has been determined by Auger electron spectroscopy and LEED. A pronounced effect of the crystallographic orientation on the kinetics and mechanism of O2 reduction has been found. The half-wave potential for the Au (100) face is the most positive. O2 reduction, only on this surface, proceeds with the exchange of four electrons in a "series" pathway in the potential region of AuOH formation. The cathodic and anodic kinetic data for the O2/HO2- and HO2-/OH- couples support the mechanism O2+e-→ O2- (ads) 2 O2- (ads)+H2O HO2-+O2+OH- Further reduction of HO2- is controlled by an initial one-electron transfer: HO2-+e-+H2O→ 2 OH-+OH(ads) OH(ads)+e- OH- The OH species adsorbed on the Au (100) face appears considerably discharged. Such a surface apparently i...nteracts more strongly with O2, O2- and HO2-, and is probably the origin of the high activity of the Au (100) face for O2 and HO2- reduction.

Ključne reči:
catalysis / crystallography / electrochemistry / electrodes - gold / oxygen / O2 reduction / single crystal electrode
Izvor:
Journal of Electroanalytical Chemistry, 1984, 165, 1-2, 105-120
Izdavač:
  • Elsevier
Projekti:
  • The Research Fund of Serbia, Yugoslavia, Serbian Academy of Sciences and Arts
  • The Department of Energy, Washington, U.S.A., Contract Energy 42

DOI: 10.1016/S0022-0728(84)80090-X

ISSN: 0022-0728

Scopus: 2-s2.0-0021422374
[ Google Scholar ]
170
URI
https://cer.ihtm.bg.ac.rs/handle/123456789/4214
Kolekcije
  • Radovi istraživača / Researchers' publications
Institucija
IHTM
TY  - JOUR
AU  - Adžić, Radoslav R.
AU  - Marković, Nenad M.
AU  - Vešović, V. B.
PY  - 1984
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4214
AB  - The kinetics of O2 reduction on the Au (100) single crystal electrode have been examined in alkaline electrolytes using the rotating dise method. A comparison has been made with the Au (110) and Au (111) surfaces. The quality of the surfaces has been determined by Auger electron spectroscopy and LEED. A pronounced effect of the crystallographic orientation on the kinetics and mechanism of O2 reduction has been found. The half-wave potential for the Au (100) face is the most positive. O2 reduction, only on this surface, proceeds with the exchange of four electrons in a "series" pathway in the potential region of AuOH formation. The cathodic and anodic kinetic data for the O2/HO2- and HO2-/OH- couples support the mechanism O2+e-→ O2- (ads) 2 O2- (ads)+H2O HO2-+O2+OH- Further reduction of HO2- is controlled by an initial one-electron transfer: HO2-+e-+H2O→ 2 OH-+OH(ads) OH(ads)+e- OH- The OH species adsorbed on the Au (100) face appears considerably discharged. Such a surface apparently interacts more strongly with O2, O2- and HO2-, and is probably the origin of the high activity of the Au (100) face for O2 and HO2- reduction.
PB  - Elsevier
T2  - Journal of Electroanalytical Chemistry
T1  - Structural effects in electrocatalysis. Oxygen reduction on the Au (100) single crystal electrode
VL  - 165
IS  - 1-2
SP  - 105
EP  - 120
DO  - 10.1016/S0022-0728(84)80090-X
ER  - 
@article{
author = "Adžić, Radoslav R. and Marković, Nenad M. and Vešović, V. B.",
year = "1984",
url = "https://cer.ihtm.bg.ac.rs/handle/123456789/4214",
abstract = "The kinetics of O2 reduction on the Au (100) single crystal electrode have been examined in alkaline electrolytes using the rotating dise method. A comparison has been made with the Au (110) and Au (111) surfaces. The quality of the surfaces has been determined by Auger electron spectroscopy and LEED. A pronounced effect of the crystallographic orientation on the kinetics and mechanism of O2 reduction has been found. The half-wave potential for the Au (100) face is the most positive. O2 reduction, only on this surface, proceeds with the exchange of four electrons in a "series" pathway in the potential region of AuOH formation. The cathodic and anodic kinetic data for the O2/HO2- and HO2-/OH- couples support the mechanism O2+e-→ O2- (ads) 2 O2- (ads)+H2O HO2-+O2+OH- Further reduction of HO2- is controlled by an initial one-electron transfer: HO2-+e-+H2O→ 2 OH-+OH(ads) OH(ads)+e- OH- The OH species adsorbed on the Au (100) face appears considerably discharged. Such a surface apparently interacts more strongly with O2, O2- and HO2-, and is probably the origin of the high activity of the Au (100) face for O2 and HO2- reduction.",
publisher = "Elsevier",
journal = "Journal of Electroanalytical Chemistry",
title = "Structural effects in electrocatalysis. Oxygen reduction on the Au (100) single crystal electrode",
volume = "165",
number = "1-2",
pages = "105-120",
doi = "10.1016/S0022-0728(84)80090-X"
}
Adžić RR, Marković NM, Vešović VB. Structural effects in electrocatalysis. Oxygen reduction on the Au (100) single crystal electrode. Journal of Electroanalytical Chemistry. 1984;165(1-2):105-120
Adžić, R. R., Marković, N. M.,& Vešović, V. B. (1984). Structural effects in electrocatalysis. Oxygen reduction on the Au (100) single crystal electrode.
Journal of Electroanalytical ChemistryElsevier., 165(1-2), 105-120.
https://doi.org/10.1016/S0022-0728(84)80090-X
Adžić Radoslav R., Marković Nenad M., Vešović V. B., "Structural effects in electrocatalysis. Oxygen reduction on the Au (100) single crystal electrode" 165, no. 1-2 (1984):105-120,
https://doi.org/10.1016/S0022-0728(84)80090-X .

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