Intrinsic Catalytic Structure of Gold Nanoparticles Supported on TiO2

Authors

  • Yasufumi Kuwauchi,

    1. The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047 (Japan)
    2. Department of Physics, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043 (Japan)
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  • Dr. Hideto Yoshida,

    1. The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047 (Japan)
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  • Dr. Tomoki Akita,

    1. Research Institute for Ubiquitous Energy Devices, National Institute of Advanced Industrial Science and Technology, 1-8-31, Midorigaoka, Ikeda, Osaka 563-8577 (Japan)
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  • Prof. Masatake Haruta,

    1. Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minami-osawa, Hachioji, Tokyo 192-0397 (Japan)
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  • Prof. Seiji Takeda

    Corresponding author
    1. The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047 (Japan)
    • The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047 (Japan)
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  • This study was supported by a Grant-in-Aid for Specially Promoted Research (grant no. 19001005) from the Ministry of Education, Culture, Sports, Science and Technology (MEXT) (Japan). A part of this study was supported by the “Low-Carbon Research Network (Handai satellite)” of MEXT. We thank Dr. S. Tanaka, Dr. K. Tanaka, and Prof. M. Kohyama of AIST for their interest in this study.

Abstract

original image

Obwohl TiO2 unter Elektronenbeschuss empfindlich ist, konnte die Struktur von Au/TiO2-Katalysatoren transmissionselektronenmikroskopisch untersucht werden. Unter Reaktionsbedingungen (CO/Luft, 100 Pa) sind die {111}- und {100}-Hauptflächen der Goldnanopartikel exponiert, und die Partikel bilden eine polygonale Grenzfläche mit dem TiO2-Träger, die durch scharfe Kanten parallel zu den 〈110〉-Richtungen abgegrenzt wird.

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