Photocatalytic, superhydrophilic, self-cleaning TiO2 coating on cheap, light-weight, flexible polycarbonate substrates

被引:122
作者
Adachi, Takahiro [1 ]
Latthe, Sanjay S. [2 ]
Gosavi, Suresh W. [3 ]
Roy, Nitish [1 ]
Suzuki, Norihiro [1 ]
Ikari, Hiroshi [1 ]
Kato, Kazuki [1 ]
Katsumata, Ken-ichi [1 ]
Nakata, Kazuya [1 ]
Furudate, Manabu [4 ]
Inoue, Tomohiro [4 ]
Kondo, Takeshi [1 ]
Yuasa, Makoto [1 ]
Fujishima, Akira [1 ]
Terashima, Chiaki [1 ]
机构
[1] Tokyo Univ Sci, Res Inst Sci & Technol, Photocatalysis Int Res Ctr, Noda, Chiba 2788510, Japan
[2] Raje Ramrao Coll, Dept Phys, Self Cleaning Res Lab, Jath 416404, Maharashtra, India
[3] Savitribai Phule Pune Univ, Dept Phys, Ctr Adv Studies Mat Sci & Solid State Phys, Pune 411007, Maharashtra, India
[4] Shin Etsu Chem Co Ltd, PVC & Polymer Mat Res Ctr, Kamisu, Ibaraki 3140102, Japan
基金
日本科学技术振兴机构;
关键词
Self-cleaning; Superhydrophilic; Contact angle; Photocatalytic TiO2; Wetting; SUPER-HYDROPHILIC PROPERTY; SIO2; ADDITION; THIN-FILMS; TRANSPARENT; XPS;
D O I
10.1016/j.apsusc.2018.07.172
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Photocatalytic TiO2/SiO2 coatings with excellent superhydrophilic wettability were prepared on light-weight polycarbonate substrates for self-cleaning applications. The effect of distinct SiO2 concentrations (0-40%) in TiO2 on the morphology, wettability, UV-Vis transmittance, haze, and durability of the coatings was studied in detail. TiO2/SiO2 coatings prepared with 20% silica in TiO2 showed superhydrophilic wetting properties with a smooth and uniform morphology with more than 85% transmittance. The lower haze value of TiO2/SiO2 coatings confirms their clear optical appearance. A low-friction layer of fluoroalkylsilane was applied to the coatings to improve their mechanical durability. In addition, the hydrophobic-hydrophilic patterns of different areas were prepared to check their effect on the haze and wetting properties.
引用
收藏
页码:917 / 923
页数:7
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