X-RAY-ABSORPTION NEAR-EDGE STRUCTURE STUDY OF THE ELECTROOXIDATION REACTION OF CO ON PT50RU50 NANOPARTICLES

被引：31

作者：

ABERDAM, D

DURAND, R

FAURE, R

GLOAGUEN, F

HAZEMANN, JL

HERRERO, E

KABBABI, A

ULRICH, O

机构：

[1] ECOLE NATL SUPER ELECTROCHIM & ELECTROME GRENOBLE,CREM GP,CNRS,URA 1212,F-38402 ST MARTIN DHERES,FRANCE

[2] LGIT,CNRS,URA 733,F-38041 GRENOBLE,FRANCE

[3] UNIV ALICANTE,DEPT QUIM FIS,E-03080 ALACANT,SPAIN

[4] CEN GRENOBLE,DRFMCSPMM,F-38044 GRENOBLE,FRANCE

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1995年 / 398卷 / 1-2期

关键词：

X-RAY ABSORPTION NEAR EDGE STRUCTURE SPECTRA; ELECTROOXIDATION; PT50RU50;

D O I：

10.1016/0022-0728(95)04140-4

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

X-ray absorption near edge structure (XANES) spectra at the Ru K absorption edge were recorded on Pt50Ru50 nanoparticles during the electro-oxidation of CO. They are compared with the spectra obtained at the same electrochemical potential under inert gas. In the latter case, the XANES spectra change drastically in shape whereas in the former case they do not. The change in shape is related to a change in oxidation state of ruthenium atoms. This result clearly shows that the rate-determining step rds for CO oxidation is the oxidation of ruthenium atoms on nanometric Pt50Ru50 particles.

引用

页码：43 / 47

页数：5

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