Tio2 Semiconductor - A Smart Self-Cleaning Material

Smart surfaces that required no activation of ultraviolet light to induce the uniform water sheeting across the surface was developed. The TiO2 thin films exhibited stable superhydrophilic wetting and anti-fogging behaviours after repetitive cycles of heat and wet treatment. Evidences have indicated that the superhydrophilic wetting and anti-fogging performance are affected by porosity and surface hydroxyl contents. In this paper, the effect of multilayer assembly and the mechanism of which Carbowax interacted with TiO2 to induce the pore formation are discussed. Furthermore, the role of Carbowax in facilitating the formation of -OH is also presented.