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

de Moraes, Ines Rabelo; Matsubara, Elaine Yoshiko; Rosolen, Jose Mauricio

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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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Author(s):	de Moraes, Ines Rabelo ^[1] ; Matsubara, Elaine Yoshiko ^[1] ; Rosolen, Jose Mauricio ^[1] Total Authors: 3
Affiliation:	^[1] Univ Sao Paulo, Dept Quim, Fac Filosofia Ciencias Letras Ribeirao Preto, BR-14040901 Sao Paulo - Brazil Total Affiliations: 1
Document type:	Journal article
Source:	ELECTROCHEMICAL AND SOLID STATE LETTERS; v. 11, n. 12, p. K109-K112, 2008.
Web of Science Citations:	7
Abstract
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. (AU)

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