The role of surface oxides in the electrooxidation of methanol, formic acid and CO on Pt, Ru and codeposited Pt-Ru

被引：17

作者：

Frelink, T

Visscher, W

Cox, AP

vanVeen, JAR

机构：

[1] Laboratory for Inorganic Chemistry and Catalysis, Eindhoven University of Technology, 5600 MB Eindhoven

来源：

BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 1996年 / 100卷 / 05期

关键词：

electrochemistry; electrooxidation; ellipsometry; Pt; Ru and PtRu;

D O I：

10.1002/bbpc.19961000511

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The growth of an oxide layer on Pt, Ru and codeposited Pt-Ru was monitored ellipsometrically during the electrooxidation of CH3OH, HCOOH and adsorbed CO. In the potential region where these molecules or their intermediates are oxidized at the Pt-Ru surface, the Ru-oxide is no longer observed. This supports the bifunctional mechanism that has been proposed for the promoting role of Ru on Pt. PtO is not involved in the HCOOH and COads oxidation. The adsorbed CO layer on Pt and on Pt-Ru could also be observed with ellipsometry.

引用

收藏

页码：599 / 606

页数：8

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