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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 commercial TiO2 (P25) was used as raw material to prepare rod-shaped anatase TiO2 by hydrothermal method. C60 and TiO2 were compounded by chemical adsorption to obtain rod-shaped C60 / TiO2 nanocomposites. The samples were characterized by X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, Raman spectroscopy and UV-vis diffuse reflectance spectroscopy. Rhodamine B (RhB) Photocatalytic activity of C60 / TiO2 nanocomposites. The results showed that the introduction of a small amount of C60 can obviously improve the photocatalytic activity of rod-shaped TiO2, and the photocatalytic activity of 1.0% C60 / TiO2 nanocomposites is the highest, which is better than that of pure rod-shaped TiO2 and commercial P25. The reason is that C60 has a good Accept and conduct electronic properties, reducing the rate of TiO2 photogenerated electron-hole recombination, and thus improve the photocatalytic activity.