PROBING THE ELECTROCATALYTIC PROPERTIES OF BIMETALLIC INTERFACES BY CHEMISORPTION OF REDOX-ACTIVE SPECIES

被引：5

作者：

CALI, GJ ^{[1
]}

HARRIS, JE ^{[1
]}

BOTHWELL, ME ^{[1
]}

SORIAGA, MP ^{[1
]}

机构：

[1] TEXAS A&M UNIV SYST,DEPT CHEM,COLLEGE STN,TX 77843

来源：

LANGMUIR | 1990年 / 6卷 / 01期

关键词：

D O I：

10.1021/la00091a011

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The electrocatalytic properties of (i) a smooth polycrystalline Au90Pt10 alloy interface and (ii) Ag-on-Pt electrodeposited overlayers have been characterized via the changes in the redox reactivities of iodine and 2,5-dihydroxythiophenol (DHT) when these materials are chemisorbed onto the respective bimetallic surfaces. This approach is possible since the redox properties of I and DHT in the chemisorbed state are strongly dependent upon the metallic composition of the electrode surface. Experimental measurements were based upon thin-layer voltammetry and coulometry. The results accumulated thus far suggest that the electrocatalytic properties of the subject bimetallic interfaces are largely dependent upon the relative strengths of interaction between the reactant and the individual components of the mixed-metal surface. © 1990, American Chemical Society. All rights reserved.

引用

页码：74 / 81

页数：8

共 21 条

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