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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.)

Enhancement of ethanol oxidation on Pd nanoparticles supported on carbon-antimony tin oxide hybrids unveils the relevance of electronic effects

Full text
Author(s):
Alvarenga, Gabriel M. ; Coutinho Gallo, Ira B. ; Villullas, Hebe M.
Total Authors: 3
Document type: Journal article
Source: JOURNAL OF CATALYSIS; v. 348, p. 1-8, APR 2017.
Web of Science Citations: 20
Abstract

A comparative study of activity toward ethanol oxidation was carried out for catalysts having the same loading of identical Pd nanoparticles supported on carbon-oxide hybrids containing antimony tin oxide (Sb2O5/SnO2 - ATO) in different amounts (20, 30 and 40 wt.%). Enhanced catalytic activity was observed for Pd nanoparticles supported on C-ATO hybrids. X-ray absorption spectroscopy experiments carried out around the Pd L-3 edge evidenced an increase in the electronic occupancy of the Pd 4d band indicating an electronic transfer from the hybrid supports to the Pd particles. A strong correlation between ethanol oxidation currents and X-ray absorption data reveals the importance of electronic effects in the electrocatalysis of ethanol oxidation on Pd. In addition, FTIR data show that C-ATO hybrid supports promote a decrease in the onset potential and an increase in carbonate/CO2 production. (C) 2017 Elsevier Inc. All rights reserved. (AU)

FAPESP's process: 13/50206-4 - The development of multifunctional catalysts to replace Pt for fuel oxidation reactions in low temperature fuel cells toward environmentally friendly energy production
Grantee:Hebe de las Mercedes Villullas
Support type: Program for Research on Bioenergy (BIOEN) - Regular Program Grants
FAPESP's process: 16/05041-5 - Studies of the influence of metal-support interaction on the mechanism of the ethanol oxidation reaction on Pd nanoparticles
Grantee:Gabriel Martins de Alvarenga
Support type: Scholarships in Brazil - Master
FAPESP's process: 14/12255-6 - Catalysis-nanostructure-properties relations: establishing basis for the design of multifunctional catalysts
Grantee:Hebe de las Mercedes Villullas
Support type: Regular Research Grants
FAPESP's process: 14/02387-2 - Preparation and studies of performance of multifunctional catalysts for ethanol oxidation in alkaline medium
Grantee:Gabriel Martins de Alvarenga
Support type: Scholarships in Brazil - Scientific Initiation