Preparation and Photocatalytic Activity of the N-Fe co-doped TiO₂ by Hydrothermal Method

Using tetra-4-butyl titanate as precursor,NH₄NO₃ and Fe(NO₃)₃·9H₂O as dopants,the N-Fe co-doped TiO₂ were synthesized through hydrothermal method.The size,appearance,structure and property of TiO₂ were characterized by XRD,FE-SEM,UV-VIS,BET and FT-IR.The results showed that the co-doped TiO₂ powders were anatase,spherality,possessed specific surface area of 201 m²/g and grain size of 9.2 nm.The experiment results of methyl orange solution degradation show that the degradation rate of methyl orange was 96.4% under Xe-lamp(350 W) irradiation 1 hour,and the photocatalytic activity was higher than P25.Under the sunlight irradiation 4 hour,the degradation rate of methyl orange was 84.5%.