Electrochemical Evidence of Strong Electronic Interaction of PtRu on Carbon Nanotubes with High Density of Defects

被引：15

作者：

de Moraes, Ines Rabelo ^{[1
]}

Matsubara, Elaine Yoshiko ^{[1
]}

Rosolen, Jose Mauricio ^{[1
]}

机构：

[1] Univ Sao Paulo, Dept Quim, Fac Filosofia Ciencias Letras Ribeirao Preto, BR-14040901 Sao Paulo, Brazil

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2008年 / 11卷 / 12期

关键词：

D O I：

10.1149/1.2990222

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

We show that carbon nanotubes (CNTs) with high density of defects can present a strong electronic interaction with nanoparticles of Pt-Ru with average particle size of 3.5 +/- 0.8 nm. Depending on the Pt-Ru loading on the CNTs, CO and methanol oxidation reactions suggest there is a charge transfer between Pt-Ru that in turn provokes a decrease in the electronic interaction taking place between Ru and Pt in the PtRu alloy. The CO stripping potentials were observed at about 0.65 and 0.5 V for Pt-Ru/CNT electrodes with Pt-Ru loadings of 10 and 20, and 30 wt %, respectively. (C) 2008 The Electrochemical Society. [DOI: 10.1149/1.2990222] All rights reserved.

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页码：K109 / K112

页数：4

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