ELECTROCHEMICAL OXIDATION OF ADSORBED CARBON-MONOXIDE ON PLATINUM SPHERICAL SINGLE-CRYSTALS - EFFECT OF ANION ADSORPTION

被引：57

作者：

DEBECDELIEVRE, AM ^{[1
]}

DEBECDELIEVRE, J ^{[1
]}

CLAVILIER, J ^{[1
]}

机构：

[1] CNRS,ELECTROCHIM INTERFACIALE LAB,F-92195 MEUDON,FRANCE

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1990年 / 294卷 / 1-2期

关键词：

D O I：

10.1016/0022-0728(90)87138-A

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

We have studied the oxidation of CO adsorbed as a monolayer on a platinum polycrystalline disk and on a platinum monocrystalline bead in HClO4 and H2SO4 pure or containing Cl- media. The effects of specific anion adsorption on the potential and profile of the CO oxidation peak are demonstrated: first, a positive shift of this potential and second, a splitting of the oxidation peak due to the competitive adsorption of anions on terrace and step sites of the surface of the bead. It is concluded that in these media CO adsorbed species are immobile on the surface and their oxidation is structure-sensitive. © 1990.

引用

页码：97 / 110

页数：14

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