粉体TiO2光催化剂的溶胶－凝胶制备及其活性测试

he semiconductor oxide as photocatalyst is a promising technique for the environmental mediation, and has been the hottest area for researchers. Titanium dioxide (TiO2) semiconductor has extensively studied due to its desirable properties of chemical stability, relatively high safety and low cost. This paper discusses preparation of titanium dioxide by Sol-Gel method. In the Sol-Gel process, the precursor (Ti(OC4H9)4 ), solvent (C2H5OH), chelating agent (CH3COOH) ,water and thermal treatment temperature is named to be factors, and their effects are studied by degradation of methyl orange, which is the maximum condition: the molar ratio of water to Ti(OC4H9)4 is 14:1 ,the volume ratio of Ti(OC4H9)4 to C2H5OH to CH3COOH is 1: 6: 0.12 ,the pH value is about 2, and the temperature 600℃.