期刊
JOURNAL OF EXPERIMENTAL NANOSCIENCE
卷 4, 期 3, 页码 221-232出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/17458080902920506
关键词
TiO2; hydrophilic; hydrophobic; modification capability
类别
资金
- Department of Science and Technology, Ho Chi Minh City, Vietnam
Self-cleaning hydrophilic and hydrophobic properties of TiO2-based thin films on glass substrates have been investigated in this study. The addition of SiO2 into TiO2 can increase the wettability of films and maintain the hydrophilic state for a long time even in the dark. The contact angle of water on deposited films containing 15% SiO2 is less than 2 degrees after 2 h of UV illumination. These TiO2-SiO2 films exhibit excellent antifogging characteristics. Meanwhile, TiO2-Al2O3 films possess high water repellent ability and the photo-induced self-cleaning can take place even in visible light. The TiO2 thin film containing 33% of Al2O3 shows a high hydrophobic state with a water contact angle of 73 degrees after being irradiated with sunlight for 2 h. A comparison of hydrophilic TiO2-SiO2 and hydrophobic TiO2-Al2O3 films demonstrates the ability to modify the TiO2 thin film properties for self-cleaning applications.
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