光催化纳米材料在环境保护中的应用

Application of Nano-Photocatalysts in Environmental Protection

综述了光催化纳米材料在环境保护领域中的应用进展及环境污染物在光催化纳米材料表面的光催化降解机理,对光催化纳米材料在降解化工废水、农药废水、染料废水、含油废水、造纸废水等有机废水和无机废水、自来水净化、大气污染治理等方面的应用进行了评述,简要介绍了该材料在自清洁涂料、光催化消毒剂、吸收紫外线等方面的应用。指出了目前光催化纳米材料在应用领域中存在的不足,并展望了合成出对可见光有高响应率的光催化剂以及和传统污水处理技术相结合的发展前景。

Recent progresses of nano-photocatalysts used in environmental protection and photocatalytic mechanism of environmental pollutant degradation on surface of nano-photocatalysts were reviewed. Applications of the catalysts in treatment of chemical industry wastewater, such as agricultural pesticide wastewater, dye waste water, oily wastewater, and papermaking wastewater, were introduced. Applications of the catalysts in purification of drinking water and polluted air were also discussed. These materials could be used as self-cleaning coatings, photocatalysis disinfectant and ultraviolet absorbent. Development tendency of photocatalytic materials would depend both on preparation of nano-photocatalytic materials with high responsivity to visible light and combination with traditional environmental protection technologies.