中文摘要：

采用含有氯化镉和硫脲的钛溶胶对钛酸纳米管载体进行修饰,再经焙烧制得不同CdS含量的一维CdS/TiO2纳米材料.运用X射线衍射、透射电子显微镜、N2吸附-脱附、紫外-可见光谱和X射线光电子能谱等手段表征了材料的结构和性质,并考察了CdS/TiO2样品在紫外光及模拟日光条件下光催化降解甲基橙溶液的活性.结果表明,经高温焙烧后,钛酸纳米管晶型发生变化,生成一维TiO2晶片,经CdS修饰后,其光催化性能明显提高,其中400oC焙烧所得的3%CdS/TiO2光催化性能最好.

英文摘要：

By using hydrogen titanate nanotubes as support and titanium sol composed of CdCl2 and thiourea as modifying precursor,one-dimensional CdS/TiO2 catalysts with different CdS contents were prepared after calcination.The prepared materials were characterized by X-ray diffraction,transmission electron microscopy,N2 adsorption,UV-Vis diffuse reflectance spectroscopy,and X-ray photoelectron spectroscopy.Using methyl orange solution as wastewater,the photocatalytic activity of CdS/TiO2 was investigated under UV light and simulated sunlight irradiation.The results indicate that the tubular structure of titanate nanotubes is damaged and one-dimensional TiO2 crystals form after the calcination process at high temperature.After TiO2 is modified by CdS,improved photocatalytic performance is obtained,and 3% CdS/TiO2 calcined at 400 oC exhibits the best catalytic performance.