石墨相氮化碳/三聚氯氰复合光催化剂的制备及其光催化活性  

Synthesis and Photocatalytic Activity of Graphitic Carbon Nitride/Cyanuric Chloride Composite Photocatalyst

作　　者：张晓楠[1] 孙玉东[1] 李乃瑄[1] 

机构地区：[1]天津理工大学化学化工学院,天津300384

出　　处：《应用化学》2016年第7期820-826,共7页Chinese Journal of Applied Chemistry

基　　金：天津市应用基础及前沿技术研究计划(11JCZDJC24400)~~

摘　　要：研制了一种石墨相氮化碳/三聚氯氰(g-C_3N_4/C_3Cl_3N_3)复合型光催化剂。由于该催化剂在g-C_3N_4的基础上有效拓展了π共轭体系,同时引入氯原子,使带隙位置上移,改善了光生电荷的还原能力,在可见光照射下,能有效降解有机污染物。实验结果表明,20 min内对RR染料废水的降解率达94.7%,重复使用5次后,降解率仍达94%。通过在降解体系中加入氧化性活性物种捕获剂的方法,研究了g-C_3N_4/C_3Cl_3N_3吸收可见光降解有机污染物的机理。A graphitic carbon nitride / cyanuric chloride（g-C_3N_4/C_3Cl_3N_3） composite photocatalyst was developed. The obtained catalyst effectively expands π-conjugated system of g-C_3N_4. Moreover,the band gap is significantly shifted,and the reduction ability of the photo generated charge is improved because of the introduction of a chlorine atom. The catalyst can effectively degrade organic pollutants under visible light. The result shows that the degradation ratio of reactive red-dye is 94. 7% and is still kept at 94% after using5 times. The mechanism on the degradation of organic pollutants under visible light was studied.

关 键 词：氮化碳 三聚氯氰 活性红(RR) 可见光催化 

分 类 号：O643.3[理学—物理化学]