胶体颗粒制备二氧化钛空心球及其光催化性能研究

摘要

二氧化钛基空心球由于低密度、高比表面积、单分散性和高稳定性等特性,以及空心部分能容纳其它材料,可以产生一些奇特的基于微观“包裹”效应的性质,在微尺度反应器、药物传输载体、光子晶体、催化剂和能量存储等诸多技术领域都有重要的应用.系统评述了以不同胶体颗粒(聚合物微球、SiO2微球、微纳米尺寸碳球)为模板制备二氧化钛基空心球的方法过程,介绍了二氧化钛基空心球的光催化应用的最新进展.%The TiO2 hollow sphere have been one of the research frontiers and focuses in nanomaterials field due to their low density, high specific surface area, monodispersity, stability, and novel muhifunctional properties arising from combining different materials into the hollow interiors and potential applications in microanoscale chemical reactors,drug-delivery carriers, photonic building blocks, efficient catalysts, energy-storage media and so on. Solid-template methods preparing hollow inorganic spheres based on different colloid particles (PS,SiO2,C spheres) template are systematically highlighted,and the involved photocatality applications of the TiO2 hollow sphere and its research progress are summarized.