Study on the Photocatalytic Degradation of Bisphenol A by La~(3+) Doping TiO_2 under Sunshine Irradiation

摘要

Lanthanum doping TiO_2 powders were prepared using sol-gel method, and characterized by XRD. The doping quantity, time of solar irradiation and the added quantity of catalyst were investigated for the influence on the photocatalytic degradation of bisphenol A. The results show the structure of La~(3+) doped TiO_2 powders were anatase, particle size were 16 nm. For the initial concentration of bisphenol A solution were 50 mg/L, when the doping quantity of La were 1.0 wt %, the dosing quantity of TiO_2 were 3.6 g/L, PH value were acid, irradiation time were 2 h, the photocatalytic activity of TiO_2 was the best.