Angle resolved total reflection fluorescence XAFS and its application to Au clusters on TiO2(110) (1 × 1)
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概要
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The bonding features and three dimensional structures of metal clusters on single crystal oxide surfaces can be determined by the polarization dependent total reflection fluorescence XAFS (PTRF-XAFS) method. K-edge XAFS has a cos2 θ polarization-dependence to give successfully three dimensional structure while L3 edge XAFS has a weaker polarization dependence though the L3 edge is suitable for Au and Pt samples. In order to overcome this issue, we have developed an angle-resolved total reflection fluorescence XAFS (ARTRF-XAFS) method to determine more precise three dimensional structures of Au clusters using the L3 edge by increase the number of data points. In this paper we described the methodologies of the ARTRF-XAFS and the results of Au clusters on the TiO2(110) surface.
著者
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Asakura Kiyotaka
Catalysis Res. Center Hokkaido Univ. Kita 21-10 Kita-ku Sapporo 001-0021 Jpn
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Chun Wang-jae
Graduate School Of Natural Sciences International Christian University
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FUJIKAWA Keisuke
Catalysis Research Center, Hokkaido University
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Nomura Masaharu
Photon Factory High Energy Accelerator Research Organization (kek)
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CHUN Wang-Jae
Department of Material Science, International Christian University
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MIYAZAKI Kotaro
Catalysis Research Center, Hokkaido University
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WATANABE Naoki
Catalysis Research Center, Hokkaido University
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KOIKE Yuichiro
Photon Factory, Institute of Structural Material Science
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TAKAKUSAGI Satoru
Catalysis Research Center, Hokkaido University
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