Photo Catalytic Activity of Nanocomposite Coating

Titania (TiO2) is largely used as pigment in paints and also in coating materials due to its optical properties, high transparency, high refractive index and chemical stability inthe visible and near-IR regions [1]. Anatase crystalline structures of TiO2 exhibits excellent ability to decomposemany organic compounds and imparts good antibacterial effect and shows high photocatalytic reaction induced by illumination with ultraviolet (UV) radiation [2, 3]. At thisarticle, anatase nanoparticles were prepared at two conditions, namely low temperature and high temperature, from Titanium (IV) tetrabutoxide by sol-gel process. After this step above nanoparticles by Tetraethylorthosilicate sol were converted into TiO2-SiO2 core/shell.