石墨相氮化碳及其改性对有机污染物的光催化降解

Photocatalytic Degradation of Organic Pollutants by Graphite Phase Carbon Nitride and its Modification

光催化技术可以通过半导体材料光催化剂对太阳能进行有效吸收,且在较为温和的条件下可以发生光催化氧化还原反应,促进环境有机污染的降解。石墨相氮化碳(g-C_3N_4)是一种新型非金属半导体光催化剂,因自身独特的类石墨层状结构而具有良好的光催化性能,使其成为近年来光催化领域的研究热点之一。文章分析了g-C_3N_4的结构、性质和光催化机理,阐述了进一步提高其光催化活性的改性方法,并介绍了其在有机污染物光催化降解与环境修复领域的应用前景。

Photocatalytic technology can be used for effective absorption of solar energy through a semiconductor photocatalyst.Under the condition of moderate temperature,photocatalytic oxidation reduction reaction can occur to promote the degradation of organic pollution of the environment.Graphite-phase carbon nitride （g-C 3N 4） is a new type of non-metallic semiconductor photocatalyst with excellent photocatalytic properties due to its unique graphite-like lamellar structure,which makes it one of the hot spots in the field of photocatalysis in the recent years.In this paper,the structure and properties of g-C 3N 4 and light catalytic mechanism are analyzed.Furthermore,the modified method of further improving the photocatalytic activity is illustrated,and its application in the fields of photocatalytic degradation of organic pollutants and environmental remediation is introduced.