THE ELECTROOXIDATION OF CO-ADSORBATES ON DIFFERENT PLATINUM-ELECTRODES IN ACID-SOLUTION

被引：19

作者：

BILMES, SA ^{[1
]}

ARVIA, AJ ^{[1
]}

机构：

[1] NATL UNIV LA PLATA,INST INVEST FISICOQUIM TEOR & APLICADAS,RA-1900 LA PLATA,ARGENTINA

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1993年 / 361卷 / 1-2期

关键词：

D O I：

10.1016/0022-0728(93)87050-6

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A comparative study was performed of the multiplicity of anodic current peaks related to the potentiostatic adsorption and the voltammetric and potentiostatic electro-oxidation of adsorbed CO on smooth polycrystalline, electrodispersed, smooth faceted and rough faceted Pt electrodes. The strength of the Pt-CO interactions appears to be strongly influenced by the adsorption potential, whereas the electro-oxidation of the CO adsorbate, which involves an interaction between adsorbed CO and 0-containing surface species resulting from water electroadsorption, is influenced mainly by the Pt surface texture. A complex reaction pathway involving the interconversion for CO adsorbate electro-oxidation is proposed. The interconversion of the CO adsorbate depends on both the time required for the overall reaction and the texture of the Pt electrode surface.

引用

页码：159 / 167

页数：9

共 60 条

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