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

Ethanol oxidation reaction on IrPtSn/C electrocatalysts with low Pt content

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Author(s):
Júlio César M. Silva [1] ; Beatriz Anea [2] ; Rodrigo Fernando B. De Souza [2] ; Mônica Helena M. T. Assumpção [4] ; Marcelo L. Calegaro [4] ; Almir O. Neto [5] ; Mauro C. Santos [2]
Total Authors: 7
Affiliation:
[1] Universidade Federal do ABC. Centro de Ciências Naturais e Humanas. Laboratório de Eletroquímica e Materiais Nanoestruturados - Brasil
[2] Univ Fed ABC, Ctr Ciencias Nat & Humanas, Lab Eletroquim & Mat Nanoestruturados, BR-09210170 Santo Andre, SP - Brazil
[3] Universidade Federal do ABC. Centro de Ciências Naturais e Humanas. Laboratório de Eletroquímica e Materiais Nanoestruturados - Brasil
[4] Univ Sao Paulo, Inst Quim Sao Carlos, Grp Mat Eletroquim & Metodos Eletroanalit, BR-13566590 Sao Carlos, SP - Brazil
[5] Inst Pesquisas Energet & Nucl Comissao Nacl Energ, BR-05508900 Sao Paulo - Brazil
Total Affiliations: 5
Document type: Journal article
Source: Journal of the Brazilian Chemical Society; v. 24, n. 10, p. 1553-1560, 2013-10-00.
Abstract

In this work, the ethanol oxidation reaction (EOR) was investigated using ternary nanostructured materials composed of IrPtSn/C in mass proportions of Ir:Pt:Sn at 60:30:10, 60:20:20 and 60:10:30, prepared with a polymeric precursor method and compared with commercial electrocatalyst PtSn/C E-TEK. X-ray diffractometry was used to obtain information about the structure of the material. The transmission electron microscopy showed particle sizes of 5-7 nm. The electrocatalytic activity was investigated using chronoamperometry experiments at 0.5 V vs. RHE and by in situ Fourier transform infrared spectroscopy by attenuated total reflectance (FTIR-ATR) experiments. From in situ FTIR-ATR experiments, it can be seen that using the best material IrPtSn/C 60:20:20, the acetaldehyde was produced at high intensities and CO2 at lower intensities. The use of IrPtSn/C 60:20:20 materials became possible to diminish the Pt fraction to ca. 73% in comparison to the PtSn/C E-TEK electrocatalyst, with an improvement of ca. 282% in the current density of the chronoamperometric experiments. (AU)

FAPESP's process: 09/09145-6 - Study of ethanol electrochemical oxidation mechanism on PtSn, PtCe and PtSnCe using in-situ spectroscopic techniques
Grantee:Rodrigo Fernando Brambilla de Souza
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 10/07831-7 - Synthesis and characterization of PtSn/C, PtIr/C and PtSnIr for the study of the mechanism of ethanol electrochemical oxidation using spectroscopic in situ techniques
Grantee:Júlio César Martins da Silva
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 10/16511-6 - Energy generation from biofuel using nanostructures
Grantee:Mauro Coelho dos Santos
Support Opportunities: Regular Research Grants