Transparent Superhydrophobic Thin Films with Self-Cleaning Properties

Akira Nakajima, Kazuhito Hashimoto, Toshiya Watanabe, Kennichi Takai, Goro Yamauchi, Akira Fujishima

doi:10.1021/la000155k

Transparent Superhydrophobic Thin Films with Self-Cleaning Properties

DOI Web Site 被引用文献32件参考文献19件

Akira Nakajima

Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8904, Japan
Kazuhito Hashimoto

Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8904, Japan
Toshiya Watanabe

Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8904, Japan
Kennichi Takai

Department of Mechanical Engineering, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554, Japan
Goro Yamauchi

Department of Mechanical Engineering, Daido Institute of Technology, 2-21 Daido-cho, Minami-ku, Nagoya 457-8531, Japan
Akira Fujishima

Department of Applied Chemistry, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan

書誌事項

公開日: 2000-07-25

DOI

10.1021/la000155k

公開者: American Chemical Society (ACS)

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説明

Transparent superhydrophobic thin films with TiO2 photocatalyst were prepared by utilizing a sublimation material and subsequent coating of a (fluoroalkyl)silane. The transparency of the films decreased with increasing TiO2 concentration, which was attributed to the size difference of the starting materials. The film with only 2 wt % TiO2 maintained higher contact angle than the film without TiO2 after 1800-h outdoor exposure, the accumulation of stain being avoided due to TiO2 photocatalysis. The films prepared in this study are the first ones that satisfy the requirements of transparency, superhydrophobicity, and long lifetime simultaneously.