棒状C_(60)/TiO_2纳米复合材料的制备及其光催化性能  

Preparation and Photocatalytic Properties of Rod-like C_(60)/TiO_2 Nanocomposites

作　　者：柴波[1] 宋发坤[1] 周欢[1] 张芬[1] 陈文杰[1] 朱玉婵[1] 

机构地区：[1]武汉工业学院,化学与环境工程学院,武汉430023

出　　处：《硅酸盐学报》2013年第4期560-566,共7页Journal of The Chinese Ceramic Society

基　　金：武汉工业学院引进(培养)人才科研启动项目资助(2012RZ12)

摘　　要：以商业TiO2(P25)为原料,通过水热法制备了棒状锐钛矿型TiO2,再利用化学吸附作用将C60与TiO2复合得到棒状C60/TiO2纳米复合材料。采用X射线衍射、场发射扫描电子显微镜、透射电子显微镜、X射线光电子能谱、Raman光谱、紫外可见漫反射光谱对样品进行表征,以罗丹明B(RhB)为探针分子在紫外光下考察了C60/TiO2纳米复合材料的光催化活性。结果表明:少量C60的引入可明显提高棒状TiO2的光催化活性,且1.0%C60/TiO2纳米复合材料的光催化活性最高,优于单纯的棒状TiO2和商业P25,其原因是由于C60具有良好的接受和传导电子性能,降低了TiO2光生电子–空穴的复合机率,进而提高了光催化活性。The rod-like anatase （TiO2） was prepared by a hydrothermal method with commercial TiO2 （P25） as original materials. The C60/TiO2 nanocomposites were subsequently fabricated via a chemical adsorption route. The samples obtained were characterized by X-ray diffraction, field emission scanning electron microscopy, high resolution transmission electron microscopy, X-ray photoelectron spectroscopy, Raman spectroscopy, and UV-Vis diffuse reflectance spectroscopy, respectively. The photocatalytic activities of as-prepared samples were evaluated under UV light irradiation using Rhodamine B （RhB） as a probe molecule. The results indicate that the introduction of a small amount of C60 in TiO2 can enhance the photocatalytic activity, and l%C60/TiO2 nanocomposite exhibits the optimtun photocatalytic performance. The enhanced photoactivity for this nanocomposite was due to the electron-accepting and electron-transport property of C60 that inhibited the recombination rate of photogenerated electron-hole pairs.

关 键 词：碳60 二氧化钛纳米复合材料 光催化 降解 罗丹明B 

分 类 号：O643[理学—物理化学]