有序介孔TiO_2的制备及应用进展

Research on preparation and application of ordered mesoporous titanium dioxide

有序介孔二氧化钛(TiO_2)具有高比表面积、孔径连续可调、好的生物相容性等物理化学性质,使其在催化、锂离子电池、保洁除菌、药物载体等领域有广阔的应用前景。对有序介孔TiO_2的合成方法即溶胶-凝胶法、水热法、模板法、Ostwald Ripening法进行了详细介绍,讨论了不同反应条件对合成有序介孔TiO_2形貌的影响。模板剂、钛源用量对TiO_2形貌的影响;反应时间对催化性能的影响;焙烧温度对介孔结构的影响。对有序介孔TiO_2在光解水制氢、保洁除菌、电极、薄层方面的应用进行了详细的阐述,并对TiO_2的应用前景进行了展望。

Ordered mesoporous titanium dioxide（TiO2）has high specific surface area,continuously controllable pore size,good biological compatibility in physical and chemical properties,which has a broad application prospect in the fields of catalysis,lithium ion battery,cleaning and sterilization,medicine carrier,etc.The sol-gel method,hydrothermal method,template method and Ostwald Ripening method were presented on details.The effects of different reaction conditions on the morphology of TiO2 were discussed.The effects of the dosage of template agent and titanium source on morphology of TiO2,the effects of reaction time on catalytic performance of TiO2,the effects of calcination temperature on mesoporous structure of TiO2 were discussed.The application of TiO2 at the photocatalytic decomposition of water into hydrogen,cleaning and sterilization and electrode,thin layer chromatography（TLC）,as well as prospect of TiO2 were also clarified.