REE Lanthanum Doping Influence on the Photocatalysis Properties of Titanium Dioxide

摘要

Lanthanum doping TiO_2 were prepared by sol-gel method, an the photocatalytic degradation experiments were performed by using methyl orange solution as a target degradant. The results indicated that Suitable doping quantity of lanthanum can improve the photocatalytic activity of nanometer TiO_2 powders. On the basis of 50 mL methyl orange solution what concentration is 20 mg/L, photocatalytic activity is the best when doping quantity of lanthanum were 1.0 wt%. Through the relatively experiments by using sunshine and ultraviolet as light source, the results indicated that the La~(3+) doping broaden the scope of visible light area what TiO_2 response to.