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.
引用
收藏
页码：K109 / K112
页数：4
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