一维CdS/TiO_2纳米材料的制备及其光催化性能  

Preparation and Photocatalytic Performance of One-Dimensional CdS/TiO_2

作　　者：朱宝林[1] 赵伟玲[1] 曾晨婕[1] 陈洁[1] 韩骐伟[1] 黄唯平[1] 

机构地区：[1]南开大学先进能源材料化学教育部重点实验室,天津300071

出　　处：《催化学报》2011年第10期1651-1655,共5页

基　　金：国家自然科学基金(21071086);高等学校博士学科点专项科研基金(200800551036);中央高校基本科研业务费专项资金(南开大学65010031);国家大学生创新性实验计划(091005508)~~

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.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.

关 键 词：钛酸纳米管 载体 硫化镉 二氧化钛 光催化活性 

分 类 号：TB383.1[一般工业技术—材料科学与工程]