TiO2的光催化机理及在制冷设备中的消毒、杀菌作用

TiO2利用光催化反应，能产生一些具有强氧化性的小尺寸离子，运用于制冷设备中可以消毒、杀菌。文中介绍了光催化机理，消毒、杀灭细菌的作用以及提高TiO2光催化效率的途径，提出TiO2作为光催化剂还存在的一些问题及应用前景。

TiO2 Photocatalysis and its Effect of Sterilizing and Killing Bacterium in Low Temperature Equipment

Some small particles can be produced from TiO 2 by using photocatalytic reaction. These small particles have high oxidation ability and can be usedi n refrigeration equipments in order to sterilize and kill bacterium. The principle of TiO 2 photocatalysis and the actions of sterilizing and killing bcterium were introduced. It is explained that different structures of TiO 2 have different photocatalytic performances and clarify the ways of combining large band gap semiconductor with small band gap semiconductor and doping impurity to enhance TiO 2 photocatalytic efficiency. Some problems of TiO 2 photocatalysis and application prospects were put forward.