TiO_2光催化氧化技术的研究与发展

简述了TiO_2光催化反应的机理,重点介绍了金属离子掺杂、贵金属表面沉积、非金属元素掺杂、共掺杂、半导体复合、表面光敏化及外场耦合等提高TiO_2光催化性能的途径,总结了TiO_2光催化氧化技术对水中污染物的氧化/还原处理、对大气中挥发性有机物的氧化处理及在抗菌消毒等方面的应用,并针对TiO_2光催化氧化技术研究方面存在的问题,提出其未来的发展方向是污染物降解的动力学与热力学以及光催化反应器的宏观反应动力学的机理研究。

Research Progress in TiO2 Photocatalytic Oxidation Technology

The mechanism of TiO₂ photocatalytic reaction was described briefly.The ways of improving TiO₂ photocatalytic activity including metal ions doping,noble metals surface deposition, nonmetals doping,co-doping,semiconductor coupling,surface photosensitization and external field coupling were introduced emphatically.The application of TiO₂ photocatalytic oxidation technology were summarized including oxidation/reduction treatment to pollutants in water,oxidation treatment to volatile organic compounds in air and sterilization.Besides,based on the actual problems on TiO₂ photocatalytic oxidation technology it was proposed that the mechanism research of kinetics and thermodynamics of pollutants degradation and the macroscopical reaction kinetics of photocatalytic reactor was its further development.