Local Barrier Height of Ir/TiO2 Model Catalysts

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概要

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• 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.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2004-07-15

著者

• Kohyama M

  Research Institute For Ubiquitous Energy Devices National Institute Of Advanced Industrial Science A

• Akita Tomoki

  Special Division For Green Life Technology National Institute Of Advanced Industrial Science And Tec

• KOHYAMA Masanori

  Special Division of Green Life Technology, National Institute of Advanced Industrial Science and Tec

• Okumura Mitsutaka

  Department Of Chemistry Graduate School Of Science Osaka University

• Maeda Yasushi

  Research Institute for Green Technology, National Institute of Advanced Industrial Science and Techn

• Okumura Mitsutaka

  Department Of Chemistry Osaka University

• Maeda Yasushi

  Research Institute For Green Technology National Institute Of Advanced Industrial Science And Techno

• Kohyama Masanori

  Special Division Of Green Life Technology National Institute Of Advanced Industrial Science And Tech

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