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Sonochemically synthesized core-shell structured Au–Pd nanoparticles supported on γ-Fe2O3 particles

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Abstract

A sample of Au–Pd bimetallic nanoparticles supported on γ-Fe2O3 was synthesized in a sonochemically one-pot process. The structural analyses of the synthesized sample were performed by the techniques of X-ray Absorption Fine Structure (XAFS), X-ray Diffraction (XRD), Transmission Electron Microscopy (TEM) and UV–vis spectrometry. Results indicated that the synthesized sample formed a core-shell structure in which a gold core was surrounded by a thin palladium shell. The reaction rate constant for the hydrogenation of cyclohexene of the present sample showed higher value than that of Pd nanoparticles supported on γ-Fe2O3 and core-shell structured Au–Pd nanoparticles supported on SiO2. The present sample is a promising catalyst material which has a high catalytic activity.

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Acknowledgements

The authors thank Emeritus Prof. T. Tabata (Osaka Prefecture University) for his critical reading of the manuscript.

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Authors and Affiliations

  1. Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan

    Hiroaki Nitani, Masato Yuya, Takahiro Ono, Takashi Nakagawa & Takao A. Yamamoto

  2. The Institute of Scientific and Industrial Research, Osaka University, Ibaraki, Osaka, 567-0047, Japan

    Satoshi Seino & Shuichi Emura

  3. Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai, Osaka, 599-8531, Japan

    Kenji Okitsu

  4. Faculty of Engineering, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki, Nagasaki 852-8521, Japan

    Yoshiteru Mizukoshi

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  1. Hiroaki Nitani
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  2. Masato Yuya
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  3. Takahiro Ono
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  4. Takashi Nakagawa
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  5. Satoshi Seino
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  6. Kenji Okitsu
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  7. Yoshiteru Mizukoshi
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  8. Shuichi Emura
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  9. Takao A. Yamamoto
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Correspondence to Hiroaki Nitani.

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Nitani, H., Yuya, M., Ono, T. et al. Sonochemically synthesized core-shell structured Au–Pd nanoparticles supported on γ-Fe2O3 particles. J Nanopart Res 8, 951–958 (2006). https://doi.org/10.1007/s11051-005-9048-3

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  • DOI: https://doi.org/10.1007/s11051-005-9048-3

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