Dual Reactivity of Step-Bound Carbon Monoxide during Oxidation on a Stepped Platinum Electrode in Alkaline Media

被引：55

作者：

Garcia, Gonzalo ^{[1
]}

Koper, Marc T. M. ^{[1
]}

机构：

[1] Leiden Univ, Leiden Inst Chem, NL-2300 RA Leiden, Netherlands

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2009年 / 131卷 / 15期

关键词：

SINGLE-CRYSTAL ELECTRODES; CO ELECTROOXIDATION; ADSORPTION; SURFACE; MECHANISM; KINETICS; PT(111);

D O I：

10.1021/ja9009869

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The electrooxidation of adsorbed CO on a stepped platinum electrode in alkaline media reveals a dual role of the "active" step site in activating CO oxidation by adsorbed OH. The combination of "interrupted" chronoamperometry with cyclic voltammetry shows that there is active combination of CO and OH near or on the step site as well as a much less reactive combination of CO and OH in which the CO sits on the step and reacts with OH from the terrace.

引用

页码：5384 / +

页数：3

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