Facile synthesis of Zn（Ⅱ）-doped g-C3N4 and their enhanced photocatalytic activity under visible light irradiation  

作　　者：Zhao-Tian Wang Jun-Li Xu Hui Zhou Xia Zhang 

机构地区：[1]College of Science, Northeastern University

出　　处：《Rare Metals》2019年第5期459-467,共9页稀有金属（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(No.51574071)

摘　　要：Zn(Ⅱ)-doped graphitic carbon nitride(g-C3N4)with high photodegradation activity was prepared by one facile step.The morphology and structure of the prepared Zn(Ⅱ)-doped g-C3N4 were investigated,and the results showed that Zn(Ⅱ)could self-disperse during the pyrolysis process and Zn–N bond was formed between g-C3N4 and Zn.The dope of Zn(Ⅱ)influenced the structure of g-C3N4.The performance of photocatalytic activity of Zn(Ⅱ)-doped g-C3 N4 series indicated that the doped g-C3N4 with a small quantity of Zn(0.10 wt%)exhibits the best photocatalytic performance.The photodegradation activity for methyl orange was 2 times higher than that of pure g-C3N4.However,the photocatalytic activity decreased with the further increased content of Zn,which may be attributed to the structure change of g-C3N4 and the interaction of Zn–N bond between Zn and g-C3N4.Moreover,Zn(Ⅱ)-doped g-C3N4 showed good recycling photocatalytic stability.Zn（Ⅱ）-doped graphitic carbon nitride（g-C3 N4）with high photodegradation activity was prepared by one facile step. The morphology and structure of the prepared Zn（Ⅱ）-doped g-C3 N4 were investigated, and the results showed that Zn（Ⅱ） could self-disperse during the pyrolysis process and Zn–N bond was formed between g-C3 N4 and Zn. The dope of Zn（Ⅱ） influenced the structure of g-C3 N4.The performance of photocatalytic activity of Zn（Ⅱ）-doped g-C3 N4 series indicated that the doped g-C3 N4 with a small quantity of Zn（0.10 wt%） exhibits the best photocatalytic performance. The photodegradation activity for methyl orange was 2 times higher than that of pure g-C3 N4.However, the photocatalytic activity decreased with the further increased content of Zn, which may be attributed to the structure change of g-C3 N4 and the interaction of Zn–N bond between Zn and g-C3 N4. Moreover, Zn（Ⅱ）-doped g-C3 N4 showed good recycling photocatalytic stability.

关 键 词：Zn(Ⅱ)dope g-C3N4 Visible light irradiation PHOTODEGRADATION Photocatalytic stability 

分 类 号：O643.36[理学—物理化学] O644.1[理学—化学]