Local Barrier Height of Ir/TiO2 Model Catalysts

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著者

    • Maeda Yasushi Maeda Yasushi
    • Research Institute for Green Technology, National Institute of Advanced Industrial Science and Technology (AIST) Tsukuba West, 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan
    • Akita Tomoki Akita Tomoki
    • Special Division of Green Life Technology, National Institute of Advanced Industrial Science and Technology (AIST) Kansai, 1-8-31 Midorigaoka, Ikeda, Osaka 567-8577, Japan
    • Kohyama Masanori
    • Special Division of Green Life Technology, National Institute of Advanced Industrial Science and Technology (AIST) Kansai, 1-8-31 Midorigaoka, Ikeda, Osaka 567-8577, Japan

抄録

Iridium was deposited on TiO2(110)-($1\times 2$) surfaces by vacuum evaporation to form Ir/TiO2 model catalysts. The local barrier height (LBH) of Ir/TiO2 was then measured using scanning tunneling microscopy (STM) and compared with that of Au/TiO2. From STM observations, it appeared that Ir was oxidized to IrO2 by annealing at 1073 K. The LBH of IrO2 particles was almost the same as that of the TiO2 substrate, while the LBH of Au particles was 0.3 eV larger. These results suggest that a charge transfer between IrO2 and TiO2 is small, and electrons are transferred from TiO2 to Au.

収録刊行物

  • Japanese journal of applied physics. Pt. 1, Regular papers & short notes

    Japanese journal of applied physics. Pt. 1, Regular papers & short notes 43(7B), 4595-4598, 2004-07-15

    Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physics

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各種コード

  • NII論文ID(NAID)
    10013431574
  • NII書誌ID(NCID)
    AA10457675
  • 本文言語コード
    EN
  • 資料種別
    ART
  • 雑誌種別
    大学紀要
  • ISSN
    0021-4922
  • NDL 記事登録ID
    7029217
  • NDL 雑誌分類
    ZM35(科学技術--物理学)
  • NDL 請求記号
    Z53-A375
  • データ提供元
    CJP書誌  NDL  JSAP 
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