Photocatalytic degradation performance of nanometer Titania of Zn²⁺and Sn⁴⁺ composite doping

Photocatalyst TiO2 of Zn2+ and Sn4+ composite doping was prepared by the sol-gel method.And the samples were analyzed by XRD,TEM and UV-Vis methods.As the target contamination,P-nitrophenol was degraded by TiO2 catalyst.The results show that Zn2+ and Sn4+ composite doping can improve the absorbency from 200 nm to 450 nm,and it causes the red-shift.By irradiation of xenon lamp,the photocatalytic activity is better than that of pure TiO2.