The Preparation And Photocatalytic Performance of Ni-trogen-doped Titanium Dioxide

Chenqi ZHANG

School of Civil Engineering of Chongqing Jiaotong University, Chongqing, 400074 , China

Abstract: In recent years the traditional represented by nanometer TiO2 semiconductor materials, with its ad-vantages of non-toxic, economy, chemical stability and become a promising photocatalyst, however, TiO2 photocatalyst exist two problems: with wider band gap, can only be shorter wavelength ultraviolet excitation, utilization rate is low. Inspire photoproduction of electrons and holes is easy to compound, led to the decrease of the photocatalytic activity, the decomposition rate is reduced.Modification of TiO2 can effectively improve the catalytic ability under visible light to reduce the recombination of photo-generated carriers. Doping modification is an effective modification method. this paper adopts hydrothermal method to prepare TiO2 photocatalysts with different N dosage respectively. I also have done a sample performance characterization by X-ray diffraction (XRD).

Keywords: N-doped ; TiO2 ; Methylene blue ; Photocatalytic activity