纳米金红石相二氧化钛的水热法制备及其光催化处理染料废水的研究

Hydrothermal Synthesis and Photocatalytic Properties of Nano Rutile TiO_(2)

以TiCl_(4)为原料,采用水热法在温和的条件下制备出二氧化钛粉体,对粉体进行XRD粉末衍射、N_(2)吸附-脱附等温线、热分析、红外和紫外光谱表征。结果表明,样品为纯金红石相,粒度为6 nm,比表面积为96.2 m^(2)/g,带隙为3.12 eV,样品表面含有7.5%的水。罗丹明B的光催化降解实验表明纯金红石型二氧化钛具有较高的光催化活性。

Titania powders have been synthesized by hydrothermal process under mild conditions using TiCl_(4)as starting materials.The powders were characterized by XRD,Nitrogen adsorption-desorption isotherm,TG,FTIR and UV-Vis spectrum.The results showed that the samples composed of pure rutile structure.The crystalline size is about 6 nm and the specific surface is 96.2 m^(2)/g.Its band gap is about 3.12 eV and there exists about 7.5%adsorbed water on the surface of TiO_(2).