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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.)

Preparation of PtSnO2/C electrocatalysts using electron beam irradiation

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Author(s):
Silva, Dionisio F. [1] ; Geraldes, Adriana N. [1] ; Oliveira Neto, Almir [1] ; Pino, Eddy S. [1] ; Linardi, Marcelo [1] ; Spinace, Estevam V. [1] ; Macedo, Waldemar A. A. [2] ; Ardisson, Jose D. [2]
Total Authors: 8
Affiliation:
[1] IPEN CNEN SP, BR-05508900 Sao Paulo - Brazil
[2] CDTN, Serv Nanotecnol, BR-31270901 Belo Horizonte, MG - Brazil
Total Affiliations: 2
Document type: Journal article
Source: MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS; v. 175, n. 3, p. 261-265, DEC 15 2010.
Web of Science Citations: 16
Abstract

PtSnO(2)/C electrocatalysts with Pt:Sn atomic ratios of 75:25, 50:50 and 25:75 were prepared in water/2-propanol using electron beam irradiation. The materials were characterized by energy-dispersive X-ray analysis, X-ray diffraction, Mossbauer spectroscopy and transmission electron microscopy. The electro-oxidation of ethanol was studied by chronoamperometry at room temperature and on direct ethanol fuel cell (DEFC) at 100 degrees C. The X-ray diffraction and Mossbauer measurements of the PtSnO(2)/C electrocatalysts showed typical face-centered cubic (fcc) structure of platinum and the presence of a SnO(2) phase (cassiterite). The PtSnO(2)/C electrocatalysts were active for ethanol electro-oxidation and the material with Pt:Sn atomic ratio of 50:50 showed the best performance. (C) 2010 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 07/08724-7 - Preparation of PtRu/C and PtSn/C electrocatalysts using electron beam for application as anode in direct alcohol fuel cell
Grantee:Estevam Vitorio Spinacé
Support type: Regular Research Grants