Preparation and Application of Self-Cleaning, Antibacterial, and Photocatalytic Nanocrystalline TiO2 Thin Film Coatings on Glass
Glass has been widely used in modern construction industry. It is used as material not only for constituting common windows and doors as well as French windows, but also for constituting walls of buildings such as housings, offices, shopping malls and hospitals. Glass is also an important media that people communicate with the Nature and with which people can view beauty of the Nature, and enjoy the sunlight under a desired and comfortable environment. It has been known that TiO2 thin films on substrates prepared by suitable processes have anti-bacterial and anti-virus activities. Therefore, it is desired that an optically transparent TiO2 thin film having anti-bacterial and anti-virus activities is formed on the surface of glass used in the buildings mentioned above. It is more preferable if the thin film on glass can not only freshen air of the environment by decomposing organic pollutants existing in the environment but also kill germina and bacteria on contact attached to the glass (clean the glass itself), in view of more and more serious pollution of the environment. Meanwhile, the thin film does not reduce the transparency of the glass and visible light ray irradiation in the sunlight any more. This would greatly improve the environment of human livings. A reverse micelle method has been developed to coat a transparent nanocrystalline titanium dioxide thin film on glass. A uniform thin film is obtained by dip coating the glass in the micelle solution. The coated glass exhibits self-cleaning, antibacterial, and photocatalytic properties. Applications: Curtain Wall in Commercial Buildings, Shopping Mall; Automotive Glass, Indoor/Outdoor Decoration, etc. Advantages: Long-lasting effect; Low Setup/Production Cost; Simple Manufacturing Procedures
電子
半導體
02/SCI/123
Inventor(s): Professor Jimmy YU, Department of Chemistry
Patent Status: Chinese Patent no. ZL03100058.4 HK Standard Patent no. HK1063620
Licensing Status: Available for licensing
香港
