Uncovering the synergistic photocatalytic behavior of bimetallic molecular catalysts  

作　　者：Lin Yuan Lei Zhang Xiao-Xin Li Jiang Liu Jing-Jing Liu Long-Zhang Dong Dong-Sheng Li Shun-Li Li Ya-Qian Lan 

机构地区：[1]Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials,Jiangsu Key Laboratory of New Power Batteries,College of Chemistry and Materials Science,Nanjing Normal University,Nanjing 210023,China [2]School of Chemistry,South China Normal University,Guangzhou 510006,China [3]School of Chemistry and Chemical Engineering,Southeast University,Nanjing 211189,China [4]Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials,China Three Gorges University,Yichang 443002,China

出　　处：《Chinese Chemical Letters》2023年第1期487-492,共6页中国化学快报（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(NSFC,Nos.92061101,21871141,21871142 and 22071109);Project funded by China Postdoctoral Science Foundation(No.2018M630572)。

摘　　要：Bimetallic catalysts usually exhibit better performance than monometallic catalysts due to synergistic effect.However,there is a lack of exploring the synergistic effect on catalytic performance caused by the introduction of inactive metal ion.In this work,we design a molecular model system that can precisely regulate the metal site number and catalytic property.When these molecular metal compounds are used as homogeneous catalysts for photocatalytic CO_(2)reduction,the dinuclear heterometallic CuNi-L2shows the highest CO_(2)-to-CO conversion,which is 2.1 and 3.0 times higher than that of dinuclear homometallic Ni2-L2and mononuclear Ni-L1.Density functional theory calculations demonstrate that,in CuNi-L2,the introduction of inactive CuⅡis easier to promote the photo-generated electrons transferring to the coupled active NiⅡsite to achieve the highest activity.In addition,this work also provides insights to design and construct more efficient bimetallic catalysts in future.

关 键 词：Dinuclear metal compounds Crystalline photocatalyst Synergistic effect Photocatalytic CO_(2)RR Artificial photosynthesis 

分 类 号：O643.36[理学—物理化学]