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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.)

Influence of silver on the glycerol electro-oxidation over AuAg/C catalysts in alkaline medium: a cyclic voltammetry and in situ FTIR spectroscopy study

Full text
Author(s):
Gomes, J. F. [1] ; Garcia, A. C. [1] ; Gasparotto, L. H. S. [1] ; de Souza, N. E. [1] ; Ferreira, E. B. [1] ; Pires, C. [1] ; Tremiliosi-Filho, G. [1]
Total Authors: 7
Affiliation:
[1] Univ Sao Paulo, Inst Quim Sao Carlos, BR-13560970 Sao Carlos, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Electrochimica Acta; v. 144, p. 361-368, OCT 20 2014.
Web of Science Citations: 26
Abstract

In the present work, we investigated the influence of silver on the glycerol electro-oxidation over carbon-supported AuAg catalysts by cyclic voltammetry and in situ FTIR spectroscopy. We observed that the presence of Ag in the bimetallic materials provided a more efficient catalyst in terms of the ability to electro-oxidize glycerol at relatively low potentials. On the other hand, the bimetallic catalysts were found to be less promising than the Au/C catalyst with respect to the reaction rate. Ag addition influenced the mechanism of glycerol electro-oxidation, favoring the C-C-C bond breaking, as evidenced by the selective formation of formic acid on the bimetallic catalysts. The impact of Ag on the glycerol electro-oxidation over AuAg/C may be driven by electronic modifications and Ag segregation on the catalysts surface. (C) 2014 Published by Elsevier Ltd. (AU)

FAPESP's process: 10/03534-8 - Electrochemical synthesis of metallic nanoparticles in aqueous and ionic liquid media for application in direct ethanol and glycerol fuel cells
Grantee:Luiz Henrique da Silva Gasparotto
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 09/08511-9 - Mechanistic studies of the electro-oxidation reaction of glycerol on model catalysts in different electrochemical environments by cyclic voltammeter and spectroscopy
Grantee:Janaina Fernandes Gomes
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 12/10856-7 - Investigation of the mechanism of glycerol electro-oxidation on metallic nanoparticles
Grantee:Amanda Cristina Garcia
Support type: Scholarships in Brazil - Post-Doctorate