Structural effects in electrocatalysis. Oxygen reduction on the Au (100) single crystal electrode
Само за регистроване кориснике
1984
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
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.
Кључне речи:
catalysis / crystallography / electrochemistry / electrodes - gold / oxygen / O2 reduction / single crystal electrodeИзвор:
Journal of Electroanalytical Chemistry, 1984, 165, 1-2, 105-120Издавач:
- Elsevier
Финансирање / пројекти:
- The Research Fund of Serbia, Yugoslavia, Serbian Academy of Sciences and Arts
- The Department of Energy, Washington, U.S.A., Contract Energy 42
Институција/група
IHTMTY - 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", 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, R. R., Marković, N. M.,& Vešović, V. B.. (1984). Structural effects in electrocatalysis. Oxygen reduction on the Au (100) single crystal electrode. in Journal of Electroanalytical Chemistry Elsevier., 165(1-2), 105-120. https://doi.org/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. in Journal of Electroanalytical Chemistry. 1984;165(1-2):105-120. doi: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" in Journal of Electroanalytical Chemistry, 165, no. 1-2 (1984):105-120, https://doi.org/10.1016/S0022-0728(84)80090-X . .