ZnNiAl-LDH/Bi_(2)WO_(6)光催化剂的制备及降解性能  

Preparation and Photodegradation Performance of ZnNiAl-LDH/Bi_(2)WO_(6)

作　　者：王俊丽[1] 李淑英 吕靖 赵强[1] 赵建国[1] WANG Junli;LI Shuying;LüJing;ZHAO Qiang;ZHAO Jianguo(School of Chemistry and Chemical Engineering,Shanxi Datong University,Datong 037009,Shanxi,China)

机构地区：[1]山西大同大学化学与化工学院,山西大同037009

出　　处：《实验室研究与探索》2022年第7期26-29,共4页Research and Exploration In Laboratory

基　　金：国家自然科学基金项目(21908135);山西省自然科学基金项目(201901D211435,201901D111308);山西省留学回国人员科技活动项目择优资助(2019-20);山西大同大学博士科研启动基金(2018-B-01,2021-B-20)。

摘　　要：采用水热法制备了ZnNiAl-LDH/Bi_(2)WO_(6)复合光催化剂,并通过在可见光下四环素(TC)的光催化降解实验评价了该复合材料的光降解活性。结果表明,当ZnNiAl-LDH的掺杂量达到25%时,ZnNiAl-LDH/Bi_(2)WO_(6)复合光催化剂的光催化活性最佳,50 min内TC的降解率可达89.2%。ZnNiAl-LDH/Bi_(2)WO_(6)复合催化剂对TC具有较高的光催化降解活性,其主要原因可以归因于Bi_(2)WO_(6)与ZnNiAl-LDH之间的协同效应,由于存在效率高的界面电荷转移,使光生电子空穴对分离效率提高,从而使TC的光催化降解效率得到提高。The ZnNiAl-LDH/Bi_(2)WO_(6) composite with excellent photocatalytic performance is prepared by using the simple hydrothermal method.The photocatalytic performance of the as-prepared catalyst is studied by degrading tetracycline(TC) under visible light irradiation.It is found that the ZnNiAl-LDH/Bi_(2)WO_(6) photocatalyst with 25% of ZnNiAl-LDH doping exhibits the highest photocatalytic activity,by which 89.2% of TC is decomposed within 50 minutes.So,the ZnNiAl-LDH/Bi_(2)WO_(6) photocatalyst presents considerably high photocatalytic degradation activities on TC.The excellent photodegradation efficiency is due to the synergy effect between Bi_(2)WO_(6) and ZnNiAl-LDH,resulting in the efficient interfacial charge transfer and the enhanced separation efficiency of photogenerated electron-hole pairs and thus the enhanced photocatalytic efficiency on TC.

关 键 词：ZnNiAl-LDH 钨酸铋 光催化降解 四环素 

分 类 号：O643.3[理学—物理化学]