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Proceedings Paper

Fabrication and super-hydrophilic property of transparent TiO2/SiO2 film from sol-gel process
Author(s): Rui Zhang; Yihe Zhang; Caiyun Xu; Li Yu; Fengzhu Lv
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Paper Abstract

A series of transparent and super-hydrophilic TiO2/SiO2 composite films with high adhesion to the glass were fabricated by dipping methods. The sol was prepared using peroxotitanium complex (PTC) as precursor by sol-gel process at low temperature. The properties of transmittance, hydrophility and adhesion were characterized by ultraviolet-visible spectrophotometer, water contact angle and the tape test, and the structure was analyzed by Fourier transform infrared spectroscopy (FTIR). The relationship of structure, surfactant and the compound action of TiO2/SiO2 was investigated. The results indicated that the fabricated films achieved excellent transmittance to slide glass of over 90%. Because of the poor adhesion of pure TiO2 film, the TiO2/SiO2 composite film with polyvinyl alcohol (PVA) as the surfactant was prepared. The tape test indicated that the composite film had a steady adhesion on the surface of glass. At the same time, the water contact angle of the films was blow 5° after exposed to the UV light. Furthermore, the glass insulators with TiO2/SiO2 composite film were placed in the outdoor environment, and it showed self-cleaning ability after water drenching. It was proved from the experiments that the transparent TiO2/SiO2 hybrid films with self-cleaning property possessed potential application in the fields of outdoor glass constructions, suspended glass disk insulators and auto windshields.

Paper Details

Date Published: 12 April 2012
PDF: 6 pages
Proc. SPIE 8409, Third International Conference on Smart Materials and Nanotechnology in Engineering, 84092K (12 April 2012); doi: 10.1117/12.922192
Show Author Affiliations
Rui Zhang, China Univ. of Geosciences (China)
Yihe Zhang, China Univ. of Geosciences (China)
Caiyun Xu, China Univ. of Geosciences (China)
Li Yu, China Univ. of Geosciences (China)
Fengzhu Lv, China Univ. of Geosciences (China)

Published in SPIE Proceedings Vol. 8409:
Third International Conference on Smart Materials and Nanotechnology in Engineering
Jinsong Leng; Yoseph Bar-Cohen; In Lee; Jian Lu, Editor(s)

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