Effects of Heat Treatment on Photocatalytic Property of Sol-Gel Derived Polycrystalline TiO2

摘要: Polycrystalline TiO2 in the bulk form was prepared by hydrothermal treatment of amorphous gel, and its photocatalytic activity for degradation ethanol physical properties were investigated after drying calcination (300–650°C). The maximum reached when polycrystalline calcinated at temperatures from 300 to 500°C, which almost same as a commercial powder. It markedly reduced above 600°C. Photocatalytic affected crystal growth anatase, progress sintering, anatase-rutile transformation morphology TiO2. characteristic this study that did not vary so much with temperature range 300–500°C.