Structural effects in electrocatalysis: Oxygen reduction on the gold single crystal electrodes with (110) and (111) orientations
Samo za registrovane korisnike
1984
Članak u časopisu (Objavljena verzija)
Metapodaci
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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.
Ključne reči:
Auger electron spectroscopy / rotating disc method / O2 reduction / Kinetics / single crystal electrodesIzvor:
Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1984, 165, 1-2, 121-133Izdavač:
- Elsevier
Finansiranje / projekti:
- 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
Institucija/grupa
IHTMTY - 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 . .