Abstract: TiO2-based self-cleaning coatings have the ability to remove the pollutants on their surfaces due to photo-induced catalytic decomposition of organic pollutants and photo-induced supra-hydrophilic surface, which present an important application prospect in industries of building,traffic, and new energy source. They can be divided into two categories: inorganic TiO2 coatings and TiO2-based nanocomposite coatings. In this paper, the preparation method, development trend, and application status of both TiO2-based self-cleaning coatings were systematically reviewed, and the existing problems were analyzed. It is proposed that the development of nano-TiO2 self-cleaning coating agent suitable for high density film surface can extend the application field, and the diversity development and its practical application research help to achieve diversification and matching of the self-cleaning coating agent.
Keywords: nanocomposite coating; titania; self-cleaning;supra-amphiphilic
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