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棒状C60/TiO2纳米复合材料的制备及其光催化性能

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Abstract:

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。

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