二维层状ZnNiAl-LDH负载氧化亚铜光催化剂的制备及其降解性能  

Preparation and Degradation Performance of Composite Photocatalyst of Two-Dimensional Layered ZnNiAl-LDH/Cuprous Oxide Particles

作　　者：郭智楠 赵强[1,2] 李淑英 王俊丽 许琳[1] 尚建鹏[1,2] 郭永 GUO Zhinan;ZHAO Qiang;LI Shuying;WANG Junli;XU Lin;SHANG Jianpeng;GUO Yong(School of Chemistry and Chemical Engineering,Shanxi Datong University,Datong 037009,China;Engineering Research Center of Coal-based Ecological Carbon Sequestration Technology of the Ministry of Education,Datong 037009,China;Shanxi Province Union laboratory of Clean Energy Materials,Shanxi Datong University,Datong 037009,China)

机构地区：[1]山西大同大学化学与化工学院,大同037009 [2]山西省清洁能源材料联合实验室,大同037009 [3]煤基生态碳汇技术教育部工程研究中心,大同037009

出　　处：《材料研究学报》2024年第6期423-429,共7页Chinese Journal of Materials Research

基　　金：国家自然科学基金(21908135);山西省自然科学基金(201901D111308,201901D211435,201801D221057);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-01,2020-B-02);山西大同大学研究生创新基金(21CX22,22CX17);山西省大学生创新创业训练计划项目(20220807,2016172)。

摘　　要：用沉淀法将ZnNiAl-LDH掺杂在Cu_(2)O中制备出一种可见光光催化剂。用这种催化剂可见光降解四环素(TC),研究其光催化性能。结果表明,这种ZnNiAl-LDH/Cu_(2)O的催化活性比纯Cu_(2)O的更高,掺杂7%ZnNiAl-LDH的ZnNiAl-LDH/Cu_(2)O光催化剂其降解活性最优,在50 min内能将TC降解89.6%。这表明,ZnNiAl-LDH/Cu_(2)O催化剂对TC的光催化降解活性较高。7%ZnNiAl-LDH/Cu_(2)O具有较高光降解效率的原因是,在Cu_(2)O与ZnNiAl-LDH之间高效的界面电荷转移和协同作用提高了光生电子空穴对的分离效率。A highly active and stable visible light photocatalyst of composite ZnNiAl-LDH/Cu_(2)O was successfully prepared by using co-precipitation method to depositing two-dimensional layered ZnNiAl-Zn-NiAl-LDH on Cu_(2)O particles.The photocatalytic activity of the prepared composite catalyst was evaluated by the degradation of tetracycline(TC)under visible light.It is found that the developed ZnNiAl-LDH/Cu_(2)O exhibited higher activity than the pure Cu_(2)O,while the ZnNiAl-LDH/Cu_(2)O photocatalyst doped with 7%of ZnNiAl-LDH exhibited the highest photodegradation activity,by which 89.6%of TC was decomposed within 50 minutes.The ZnNiAl-LDH/Cu_(2)O photocatalyst present considerably high photocatalytic degradation activities on TC.The high photodegradation efficiency of 7%ZnNiAl-LDH/Cu_(2)O could be ascribed to the efficient interfacial charge transfer at the composite and the synergistic effect between Cu_(2)O and ZnNiAl-LDH,which resulted in the enhanced separation efficiency of photogenerated electron-hole pairs.

关 键 词：无机非金属材料 沉淀法 CU2O ZnNiAl-LDH 四环素 光降解性能 

分 类 号：O643[理学—物理化学] X703[理学—化学]