BU Xianzhong, LIANG Huayin

(College of materials and mineral resources, Xi`an University of Architecture and Technology, Xi`an Shanxi 710055)

Abstract:Efficient visible light-responsive photocatalyst has been a hot research topic in the field of photocatalyst. In this paper,nitrogen doped TiO2/rectorite composite photocatalyst was prepared by the sol gel method, and the effect of preparation conditions according to the visible light catalytic performance was analyzed. When N/Ti is 1∶4, Ti/Rectorite is 15mmol/g，the race of the pump is 3rpm，the pH after centrifugation is 2.0~2.5，and calcined at 400℃, the sample show better photocatalytic properties。

Key words :TiO2; Rectorite; Nitrogen doping; Photocatalyst; visible light