Abstract
The band structure of TiO2 nanoparticles doped with La3+, Y3+ and Eu3+ rare earth ions, respectively, was calculated by CASTEP inmaterials Studio software. La3+/Y3+/Eu3+ co-doped TiO2 nano powder was prepared by sol-gel method and loaded on nickel foam by dropping method. Photocatalytic degradation performances of methyl orange under ultraviolet light and visible light were studied. The result indicates that La3+/Y3+/Eu3+ co-doped TiO2 is constituted by anatase phase which is single and stable, and its average grain size is 8 nm. The metallic ion doping changes the forbidden bandwidth of TiO2 nanoparticles. Its absorption coefficient is enhancement compared with pure TiO2 under visible light and the red shift phenomenon appears. The photocatalytic degradation of La3+/Y3+/Eu3+ co-doped TiO2 loading on nickel foam for methyl orange solution is 49% after 60 mins under visible light, which increases 345% compared with pure TiO2.
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