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Characterization of anatase nanocrystal-precipitated coatings from (100 - x)SiO2·xTiO2 gel films via the sol-gel process with boiling hot water treatment

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Abstract

Considerable amounts of anatase nanocrystals were formed on the (100 - x)SiO2·xTiO2 coatings with x of 16.5 and 25 mol% with boiling water treatment, whereas the formation of anatase nanocrystals was not clearly observed for the coatings with x of 50 and 75 mol%. Despite the lower TiO2 content, the coatings with x of 16.5 and 25 mol% showed higher concentration of Si–O–Ti bonds among the coatings. Thus, the hydrolysis of Si–O–Ti bonds and resultant sites should facilitate the nucleation and growth of anatase nanocrystals. High transparency, high photocatalytic activity, and superhydrophilicity were demonstrated for the anatase nanocrystals-precipitated coatings.

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Authors and Affiliations

  1. Department of Materials Science, Toyohashi University of Technology, Toyohashi, Aichi, 441-8580, Japan

    Atsunori Matsuda, Kiyoharu Tadanaga, Tsutomu Minami & Masahiro Tatsumisago

  2. Department of Applied Materials Science, Graduate School of Engineering, Osaka Prefecture University, Osaka, 599-8531, Japan

    Tatsuo Matoda

  3. Department of Earth and Planetary Sciences, Graduate School of Science, The University of Tokyo, Tokyo, 113-0033, Japan

    Toshihiro Kogure

Authors
  1. Atsunori Matsuda
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  2. Tatsuo Matoda
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  3. Toshihiro Kogure
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  4. Kiyoharu Tadanaga
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  5. Tsutomu Minami
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  6. Masahiro Tatsumisago
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Correspondence to Atsunori Matsuda.

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Matsuda, A., Matoda, T., Kogure, T. et al. Characterization of anatase nanocrystal-precipitated coatings from (100 - x)SiO2·xTiO2 gel films via the sol-gel process with boiling hot water treatment. Journal of Materials Research 20, 256–263 (2005). https://doi.org/10.1557/JMR.2005.0032

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  • DOI: https://doi.org/10.1557/JMR.2005.0032

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