Synthesis of excellent visible-light photocatalyst TiO2-xNx nanocrystal using a very simple method
The excellent visible-light responsive (from 400 nm to 550 nm) TiO2-xNx photocatalyst was prepared by a simple wet method. Hydrazine was used as a new nitrogen resource in this paper. The self-made amorphous titanium dioxide precursor powders were dipped into hydrazine hydrate, and calcined at low temperature (110 ℃) in the air. The TiO2-xNx was successfully synthesized, following with spontaneous combustion. The photocatalyst was characterized by X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), transmission electron microscope (TEM), UV-Vis diffuse reflection spectra (DRS), and X-ray photoelectron spectroscopy (XPS). Analysis of XPS indicated that N atoms were incorporated into the lattice of the titania crystal during the process of combust hydrazine on the surface of TiO2. The ethylene was selected as a target pollutant under visible light excitation to evaluate the activity of this photocatalyst. The new prepared TiO2-xNx photocatalyst with strong photocatalytic activity and high photochemical stability under visible light irradiation was firstly demonstrated in the experiment.
TiO2-xNx visible light hydrazine combustion photocatalysis
Hanjie Huang Danzhen Li Zhaohui Li Xianzhi Fu
Research Institute of Photocatalysis,State Key Laboratory Breeding Base of Photocatalysis,Fuzhou University,Fuzhou,350002,P. R. China
国际会议
成都
英文
2007-11-19（万方平台首次上网日期，不代表论文的发表时间）