Synthesis and Photocatalytic Property of SiO_2/TiO_2

A series of SiO_2/TiO_2 photocatalysts were successfully synthesized via a solvothermal method using titanium n-butoxide,tetraethoxysilane,acetic acid and water as raw materials.As- synthesized SiO_2/TiO_2 catalyst was characterized by XRD,Raman,BET,TEM,FT-IR and XPS and its phtocatalytic activity was evaluated by the degradation of methylene blue under UV light irradiation. The results show that there is strong interaction between TiO_2 and SiO_2,and Ti-O-Si bonds are formed in the SiO_2/TiO_2 catalysts.The obtained catalysts have large surface area and high crystalline anatase. Compared with pure TiO_2,the SiO_2/TiO_2 photocatalysts show better photocatalytic activity which can completely photodegrade MB after 65min UV light irridation.