Ag/多孔g-C_(3)N_(4)复合光催化剂的制备及其降解四环素性能  

Preparation of Ag/porous g-C_(3)N_(4) composite photocatalyst and its degradation performance of tetracycline

作　　者：杨忠雪 陈建军 王荣荣 李明辉 彭缓缓 宋佳琳 高燕 李永宇 YANG Zhong-xue;CHEN Jian-jun;WANG Rong-rong;LI Ming-hui;PENG Huan-huan;SONG Jia-lin;GAO Yan;LI Yong-yu(Institute of Environmental&Catalytic Engineering,School of Chemistry and Chemical Engineering,Zhengzhou Normal University,Zhengzhou 450044,China)

机构地区：[1]郑州师范学院化学化工学院,环境与催化工程研究所,河南郑州450044

出　　处：《化学研究与应用》2022年第2期335-340,共6页Chemical Research and Application

基　　金：河南省科技攻关项目(212102310513)资助;国家级大学生创新创业训练计划项目(202112949010)资助;郑州师范学院环境催化创新团队项目(702010)资助;郑州师范学院大学生创新创业训练计划项目(DCZ2020017)资助;郑州师范学院青年骨干教师培养计划项目(QNGG-20889)资助。

摘　　要：以三聚氰胺和尿素为原料,通过水热结合热处理工艺得到多孔g-C_(3)N_(4)(PCN),然后以硼氢化钠为还原剂,通过原位还原法制备了Ag/PCN复合材料。利用XRD、FTIR、UV-Vis DRS、TEM和电化学等测试对复合材料进行一系列表征。与相同条件下制备的g-C_(3)N_(4)和多孔g-C_(3)N_(4)相比,Ag/PCN具有更好的光吸收能力和更强的电子空穴分离效率。同时对材料可见光降解四环素的性能进行研究,结果发现15-Ag/PCN具有最优的光催化性能,其对四环素降解速率(0.0295 min^(-1))是g-C_(3)N_(4)(0.0131 min^(-1))的2.3倍。Using melamine and urea as raw materials,the porous g-C_(3)N_(4)(PCN)was obtained through a hydrothermal combined heat treatment process,and then NaBH_(4) was used as a reducing agent to prepare Ag/PCN composites by an in-situ reduction method.The composite materials were characterized by XRD、FTIR、TEM、UV-Vis DRS and electrochemical tests.Compared with g-C_(3)N_(4) and porous g-C_(3)N_(4) prepared under the same conditions,Ag/PCN has better light absorption capacity and stronger electron-hole separation efficiency.At the same time,the visible light degradation performance of tetracycline was studied,and the results showed that 15-Ag/PCN has the best photocatalytic performance,and its degradation rate of tetracycline(0.0295 min^(-1))was 2.3 times of g-C_(3)N_(4)(0.0131 min^(-1)).

关 键 词：多孔g-C_(3)N_(4) AG 四环素 可见光催化 

分 类 号：O643[理学—物理化学]