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Atomic Structure of PtRu Nanoparticle Catalysts and Their Methanol Oxidation Activity

Published online by Cambridge University Press:  01 February 2011

Hiroaki Nitani
Affiliation:
h-nitani@mit.eng.osaka-u.ac.jp, Osaka University, Graduate School of Engineering, 2-1 Yamada -oka, Suita, Osaka, 565-0871, Japan
Yusuke Honda
Affiliation:
y-honda@mit.eng.osaka-u.ac.jp, Osaka University, Graduate School of Engineering, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan
Ryo Horioka
Affiliation:
r-horioka@mit.eng.osaka-u.ac.jp, Osaka University, Graduate School of Engineering, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan
Kosuke Ohara
Affiliation:
k-ohara@mit.eng.osaka-u.ac.jp, Osaka University, Graduate School of Engineering, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan
Takuya Kawaguchi
Affiliation:
t-kawaguchi@mit.eng.osaka-u.ac.jp, Osaka University, Graduate School of Engineering, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan
Takashi Nakagawa
Affiliation:
nakagawat@abe.pe.titech.ac.jp, Tokyo Institute of Technology, Graduate School of Science and Engineering, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8552, Japan
Satoshi Seino
Affiliation:
seino@mit.eng.osaka-u.ac.jp, Osaka University, Graduate School of Engineering, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan
Takao A. Yamamoto
Affiliation:
takao@mit.eng.osaka-u.ac.jp, Osaka University, Graduate School of Engineering, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan
Hideo Daimon
Affiliation:
hideo-daimon@maxell.co.jp, Hitachi Maxell Ltd., Development & Technology Division, 6-20-1 Kinunodai, Tsukubamirai, Ibaraki, 300-2496, Japan
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Abstract

PtRu bimetallic nanoparticles supported on carbon nanoparticle (PtRu/C) catalysts were synthesized with radiation irradiation. The samples were structural analyzed by techniques of X-ray absorption fine structure (XAFS), transmission electron microscope (TEM) and X-ray diffraction (XRD). The results indicated that PtRu/C catalysts which prepared by an electron beam irradiation had more homogeneous atomic arrangement than that prepared by a gamma-ray irradiation. We found a clear correlation between the atomic structure and the catalytic activity of PtRu/C catalysts. These results supported the bi-functional mechanism.

Type
Research Article
Copyright
Copyright © Materials Research Society 2008

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References

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