石墨相氮化碳基复合光催化剂的研究进展

Research Progress of g-C_3N_4-based Composite Photocatalysts

石墨相氮化碳(g-C3N4)是一种新型的可见光光催化材料。通过构建耦合半导体复合物提高光生载流子的分离效率是目前增强光催化活性的有效方法之一。本文对g-C3N4基复合光催化材料的研究进展进行了综述,主要介绍了金属氧化物、金属硫化物、Ag系半导体、Bi系半导体与g-C3N4构筑复合物的相关研究,此复合物在光催化降解污染物、光解水制氢、光催化抗菌及光催化还原CO2为碳氢燃料等应用领域展现出优于单一g-C3N4的性能。

Graphite carbon nitride（ g-C3 N4） is a novel photocatalytic material with visible light response.To enhance the photocatalytic activity,contruction of coupled semiconductor composites is one of the effective methods with the promoted separation efficiency of photo-induced carriers. This paper reviews recent advances in the g-C3 N4-based composite photocatalysts and mainly introduces the study of g-C3 N4 coupled with metal oxide,metal sulfide,Bi based semiconductor and Ag based semiconductor. These studies show that the photocatalytic activities of composites are more excellent than pure g-C3 N4 in degradation of pollutants,water splitting,disinfection and reducing CO2 to hydrocarbon fuel.