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Structure control of Pt-SnO2catalyst for DEFC synthesized by electron beam irradiation method

Published online by Cambridge University Press:  13 March 2014

Tomohisa Okazaki ,
Satoshi Seino ,
Yuji Ohkubo ,
Takashi Nakagawa  and
Takao A. Yamamoto
Tomohisa Okazaki
Affiliation:
Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
Satoshi Seino
Affiliation:
Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
Yuji Ohkubo
Affiliation:
Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
Takashi Nakagawa
Affiliation:
Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
Takao A. Yamamoto
Affiliation:
Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
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Abstract

Carbon supported Pt-SnO2 electrocatalysts with different Sn/Pt molar ratios were prepared by an electron beam irradiation method. Dissolved gas conditions in the vials irradiated with electron beam were controlled to air or Ar. The results of the material analyses showed that both Pt and SnO2 were immobilized onto carbon support in all catalysts. Bubbling Ar to the precursor solution led to steady change of metal contents in response to the precursor concentrations. The ethanol oxidation activity plotted against Sn/Pt ratio behaved differently with dissolved gas condition of the vial. This difference is discussed with supposed existing state of SnO2 in connection with the reduction process of Pt and Sn.

Keywords

Sncatalyticelectron irradiation
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1641: Symposium AA – Catalytic Nanomaterials for Energy and Environment , 2014 , mrsf13-1641-aa03-13
Copyright
Copyright © Materials Research Society 2014 

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References

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