Preparation of rutile particle from acid treated BaTiO₃ and application for visible light sensitive photocatalyst

Abstract

Rutile TiO₂ particle was prepared from HNO₃ treated BaTiO₃. The specific surface area and crystallite size of rutile TiO₂ were altered by changing dry temperature of rutile TiO₂ sol. The visible light sensitive photocatalysts were obtained by grafting Cu ions onto the surface of the prepared rutile TiO₂ and their photocatalytic activity was evaluated using 2-propanol decomposition. Decomposition activity was the highest when the Cu concentration was about 0.1 mass%.