This article summarizes the Photocatalytic Degradation of Principle and the Photocatalytic nanomate- rials used in environmental protection. It introduces the characteristics of nano-materials and development process. Comprehensive reviews on the application of the photocatalytic nanomaterials in water treatment, air pollution and noise pollution control are introduced. At the same time, it points out that photocatalytic nanomaterials exist the questiones of low utilization rate,low catalytic efficiency and harsh request in work condition. And the combination of photocatalytic nanotechnology materials and traditional method of pollution controlling is propounded.%综述了TiO2光催化纳米材料的光催化降解原理及在环境保护中的应用现状.介绍了光催化纳米材料的特点及发展历程.对光催化纳米材料在处理水污染、治理大气污染、控制噪声污染等方面的应用进行了综合性的评述.同时指出光催化纳米材料存在光利用率低、催化效率低、对工作条件的高要求等问题,并提出了光催化纳米材料与传统环境污染治理方式相结合的发展前景.
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