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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.)

Catalysis of ethanol electro oxidation by PtRu: the influence of catalyst composition

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Author(s):
Camara, G. A. [1] ; Lima, R. B. de ; Iwasita, T.
Total Authors: 3
Affiliation:
[1] Universidade de São Paulo (USP). Instituto de Química de São Carlos. Departamento de Físico-Química - Brasil
Total Affiliations: 3
Document type: Journal article
Source: Electrochemistry Communications; v. 6, n. 8, p. 812-815, ago. 2004.
Field of knowledge: Physical Sciences and Mathematics - Chemistry
Abstract

The catalytic activity for ethanol oxidation is studied as a function of the atomic composition of PtRu electrodeposits. Chronoamperometric curves taken at 0.5 V show that the current for ethanol oxidation at PtRu electrodeposits, measured 30 min after the application of a potential step from 0.05 V, increases in the presence of Ru up to a Ru content of about 40%. The highest value observed at 0.5 V vs. RHE was 30 muA/cm(2) at 25 degreesC. There is a relatively narrow range of PtRu compositions that present a high rate of ethanol oxidation. Pure Ru has no activity towards ethanol oxidation at room temperature. (AU)

FAPESP's process: 02/14211-9 - Electrochemical and spectroscopic studies of the oxidation of ethanol acid medium
Grantee:Giuseppe Abíola Câmara da Silva
Support Opportunities: Scholarships in Brazil - Post-Doctoral