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Journal of Electron Microscopy Advance Access published online on June 12, 2009
Journal of Electron Microscopy, doi:10.1093/jmicro/dfp027
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© The Author 2009. Published by Oxford University Press on behalf of Japanese Society of Microscopy. All rights reserved. For permissions, please e-mail: journals.permissions@oxfordjournals.org

Nanostructural characterization and catalytic analysis of hybridized platinum/phthalocyanine nanocomposites

Kenji Kaneko1,2*, Kazuki Furuya1, Ana B. Hungria3, Juan-Carlos Hernandez-Garrido3, Paul A. Midgley3, Tsunenobu Onodera4, Hitoshi Kasai4,5, Yusuke Yaguchi4, Hidetoshi Oikawa4, Yohei Nomura6, Hiroki Harada6, Tatsumi Ishihara6 and Norio Baba7

1 Department of Materials Science and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395
2 JST, CREST, Japan
3 Department of Materials Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge, CB2 3QZ, UK
4 Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577
5 JST-PRESTO
6 Department of Applied Chemistry, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395 and
7 Department of Electrical Engineering and Electronics, Graduate School of Engineering, Kogakuin University, 2665-1 Nakano, Hachioji, Tokyo 192-0015, Japan

* To whom correspondence should be addressed. E-mail: kaneko{at}zaiko.kyushu-u.ac.jp

Organic crystals, such as phthalocyanine nanocrystal, were successfully hybridized with Pt nanoparticles using a nanohybridization technique. The presence of highly dispersed Pt nanoparticles on the surface of phthalocyanine was confirmed by the combination of transmission electron microscopy and three-dimensional electron tomography. Catalytic activities of hybridized samples with different degrees of dispersions were also examined as oxygen reduction reactivity (ORR) with a linear potential sweep method. It was found that oxygen reduction activity increased with increasing Pt dispersion, and reasonably high ORR was observed on Pt-dispersed phthalocyanine nanocrystal even at 2 wt% Pt loading.

Keywords     electron tomography, organic crystal, nanocomposite

Received     26 March 2009, accepted 26 April 2009


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