Ag/TiO2 复合物的低温合成及其光催化性能研究.

Ag/TiO2 photocatalyst was prepared by sol-gel and solvothermal method with tetrabutyl titanate and silver nitrate as raw materials at low temperature (120 ℃) . The samples were characterized by SEM, EDS, XRD, XPS and DRS, and the photocatalytic performance of Ag/TiO2 photocatalyst was tested. The results show that the Ag/TiO2 (3 wt%) photocatalyst synthesized at low temperature (120℃) has the best photocatalytic effect. Under 100 W high pressure mercury lamp irradiation, the degradation rate of 30 mg/L reactive Red 24 dye can reach 100% after 90 min photo reaction. Under the irradiation of 500 W xenon lamp for 150 min, the degradation rate of reactive Red 24 of 30 mg/L can reach 92.6%, and the degradation rate of dyes can reach more than 90% under both ultraviolet and visible light. It has excellent ultraviolet/visible light photocatalytic activity, which can provide an effective idea for the research of low temperature synthesis composite photocatalyst. [ABSTRACT FROM AUTHOR]