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
郭智楠 1赵强 2李淑英 3王俊丽 3许琳 1尚建鹏 2郭永2
作者信息
- 1. 山西大同大学化学与化工学院 大同 037009
- 2. 山西大同大学化学与化工学院 大同 037009;山西省清洁能源材料联合实验室 大同 037009
- 3. 山西大同大学化学与化工学院 大同 037009;煤基生态碳汇技术教育部工程研究中心 大同 037009
- 折叠
摘要
用沉淀法将ZnNiAl-LDH掺杂在Cu2O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/Cu2O的催化活性比纯Cu2O的更高,掺杂7％ZnNiAl-LDH的ZnNiAl-LDH/Cu2O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/Cu2O催化剂对TC的光催化降解活性较高.7％ZnNiAl-LDH/Cu2O具有较高光降解效率的原因是,在Cu2O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.
Abstract
A highly active and stable visible light photocatalyst of composite ZnNiAl-LDH/Cu2O was successfully prepared by using co-precipitation method to depositing two-dimensional layered ZnNiAl-Zn-NiAl-LDH on Cu2O 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/Cu2O exhibited higher activity than the pure Cu2O,while the ZnNiAl-LDH/Cu2O photocatalyst doped with 7% of ZnNiAl-LDH exhibited the highest photodegradation activity,by which 89.6% of TC was decomposed with-in 50 minutes.The ZnNiAl-LDH/Cu2O photocatalyst present considerably high photocatalytic degradation activities on TC.The high photodegradation efficiency of 7% ZnNiAl-LDH/Cu2O could be ascribed to the ef-ficient interfacial charge transfer at the composite and the synergistic effect between Cu2O 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Key words
inorganic non-metallic materials/precipitation method/cuprous oxide/ZnNiAl-LDH/tet-racycline/photodegradation property引用本文复制引用
基金项目
国家自然科学基金(21908135)
山西省自然科学基金(201901D111308)
山西省自然科学基金(201901D211435)
山西省自然科学基金(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)
山西大同大学博士科研启动基金(2020-B-02)
山西大同大学研究生创新基金(21CX22)
山西大同大学研究生创新基金(22CX17)
山西省大学生创新创业训练计划项目(20220807)
山西省大学生创新创业训练计划项目(2016172)
出版年
2024
NETL
NSTL
万方数据