Preparation And Photocatalytic Study Of Fibrous K_(0.3)ti_4o_(7.3)(oh)_(1.7)-anatase Tio_2 Nanocomposite Photocatalyst

摘要

Nanocomposite of K_(0.3)Ti_4O_(7.3)(OH)_(1.7) fiber and anatase TiO_2 nanoparticle was prepared by hydrothermal treatment of the K_(0.3)Ti_4O_(7.3)(OH)_(1.7) which was synthesized by calcination of K_2CO_3 and TiO_2 at 1250 ℃ followed by refluxing in nitric acid. Effects of hydrothermal treatment conditions such as temperature and time on morphology, phase composition and crystal structure of the nanocomposites were extensively studied. Photocatalytic activities of the catalysts prepared at various hydrothermal conditions were evaluated by means of methylene blue decomposition under blacklight irradiation.