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Photocatalytic decomposition of NO under visible light irradiation on the Cr‐ion‐implanted TiO2 thin film photocatalyst

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Abstract

Transparent TiO2 thin film photocatalysts were prepared on transparent porous Vycor glass (PVG) by the ionized cluster beam (ICB) method. In order to improve the photocatalytic performance of these thin films under visible light irradiation, transition metal ions such as Cr and V were implanted into the deep bulk inside of the films using an advanced metal‐ion‐implantation technique. The UV‐vis absorption spectra of these metal‐ion‐implanted TiO2 thin films were found to shift smoothly toward visible light regions, its extent depending on the amount and kinds of metal ions implanted. Using these metal‐ion‐implanted TiO2 thin films as photocatalysts, the photocatalytic decomposition of NOx into N2 and O2 was successfully carried out under visible light (λ 450 nm) irradiation at 275 K.

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Authors and Affiliations

  1. Department of Applied Chemistry, Osaka Prefecture University, 1‐1 Gakuen‐cho, Sakai, Osaka, 599‐8531, Japan

    Masato Takeuchi, Hiromi Yamashita, Masaya Matsuoka & Masakazu Anpo

  2. Department of Electronic Engineering, Osaka University, Yamadaoka 1‐1, Suita, Osaka, 565‐0871, Japan

    Takashi Hirao

  3. Human Environment Systems Development Center, Matsushita Electric Industrial Co., Ltd., Seika‐cho, Souraku, Kyoto, 619‐0237, Japan

    Nobuhisa Itoh

  4. Ion Engineering Research Institute Corporation, Tsuda, Hirakata, Osaka, 573‐0128, Japan

    Nobuya Iwamoto

Authors
  1. Masato Takeuchi
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  2. Hiromi Yamashita
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  3. Masaya Matsuoka
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  4. Masakazu Anpo
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  5. Takashi Hirao
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  6. Nobuhisa Itoh
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  7. Nobuya Iwamoto
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Takeuchi, M., Yamashita, H., Matsuoka, M. et al. Photocatalytic decomposition of NO under visible light irradiation on the Cr‐ion‐implanted TiO2 thin film photocatalyst. Catalysis Letters 67, 135–137 (2000). https://doi.org/10.1023/A:1019065521567

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  • DOI: https://doi.org/10.1023/A:1019065521567

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