Liu Ning, Zhang Jie, Wang Yanhua, Zhu Qingjun, Zhang Xuan, Duan Jizhou, Hou Baorong
Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China.
Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China.
Nanomaterials (Basel). 2022 Jun 6;12(11):1946. doi: 10.3390/nano12111946.
A novel visible light-driven AgBr/AgCl@ZIF-8 catalyst was synthesized by a simple and rapid method. The composition and structure of the photocatalyst were characterized by XRD, SEM, UV-DRS, and XPS. It could be observed that the 2-methylimidazole zinc salt (ZIF-8) exhibited the rhombic dodecahedron morphology with the AgCl and AgBr particles evenly distributed around it. The composite photocatalyst AgBr/AgCl@ZIF-8 showed good photocatalytic degradation and antibacterial properties. The degradation rate of RhB solution was 98%, with 60 min of irradiation of visible light, and almost all (), (), and () were inactivated under the irradiation of 90 min. In addition, the prepared catalyst had excellent stability and reusability. Based on the free radical capture experiment, ·O and h were believed to be the main active substances, and possible photocatalytic degradation and sterilization mechanisms of AgBr/AgCl@ZIF-8 were proposed.
通过一种简单快速的方法合成了一种新型可见光驱动的AgBr/AgCl@ZIF-8催化剂。采用XRD、SEM、UV-DRS和XPS对光催化剂的组成和结构进行了表征。可以观察到，2-甲基咪唑锌盐（ZIF-8）呈现菱形十二面体形态，AgCl和AgBr颗粒均匀分布在其周围。复合光催化剂AgBr/AgCl@ZIF-8表现出良好的光催化降解和抗菌性能。在可见光照射60分钟时，RhB溶液的降解率为98%，在90分钟照射下，几乎所有的（此处原文括号内容缺失）、（此处原文括号内容缺失）和（此处原文括号内容缺失）都被灭活。此外，制备的催化剂具有优异的稳定性和可重复使用性。基于自由基捕获实验，认为·O和h是主要活性物质，并提出了AgBr/AgCl@ZIF-8可能的光催化降解和杀菌机理。
