Decavanadate-based Transition Metal Hybrids as Bifunctional Catalysts for Sulfide Oxidation and C-C Bond Construction  

作　　者：Xianqiang Huang Xiaoyu Gu Yuquan Qi Yanru Zhang Guodong Shen Bingchuan Yang Wenzeng Duan Shuwen Gong Zechun Xue Yifa Chen 

机构地区：[1]Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology,School of Chemistry&Chemical Engineering,Liaocheng University,Liaocheng,Shandong 252059,China [2]Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials,Jiangsu Key Laboratory of New Power Batteries,School of Chemistry and Materials Science,Nanjing Normal University,Nanjing,Jiangsu 210023,China

出　　处：《Chinese Journal of Chemistry》2021年第9期2495-2503,共9页中国化学（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.21871125 and 21901122);the Natural Science Foundation of Shandong Province,China(Nos.ZR2019MB043 and ZR2019QB022);the Construction Project of Quality Curriculum for Postgraduate Education of Shandong Province(No.SDYKC19057);the Natural Science Research of Jiangsu Higher Education Institutions of China(No.19KJB150011);Project funded by China Postdoctoral Science Foundation(No.2019M651873).

摘　　要：The development of bifunctional catalysts has drawn much attention in realizing efficient and feasible catalytic systems to meet the diverse dema nd of pote ntial industrial applications.Desig n of stable and powerful bifun ctional catalysts for various catalysis systems is highly desirable yet largely unmet.Here,three kinds of decavanadate-based transition metal hybrids(DTMH)(i.e.,Co-DTMH,Ni-DTMH and Ag-DTMH)have been successfully synthesized through a pH tuning strategy and further characterized.Specifically,the rare M05N six-coordinated transition metal coordination modes have been detected in Co-DTMH and Ni-DTMH,while Ag atoms in Ag-DTMH exhibited three-and five-coordinated geometries with the tuning of specially selected imidazole ligands.Thus-obtained clusters can serve as powerful bifunctional catalysts for both sulfide oxidation and C-C bond construction.Remarkably,Ag-DTMH dem on st rated excellent heteroge ne ous bifunctional catalytic properties in the selective oxidati on of sulfides and construction of C-C bond(yields up to 99%),which enable successful recycling for three cycles with remained catalytic activities and structure stability.The newly designed decavanadate-based transition metal hybrids with bifunctional property hold high promise in the practical applications like continuous catalysis or flow bed reactions.

关 键 词：POLYOXOMETALATES Crystal engineering Bifunctional catalysts Oxidation of sulfides Heterogeneous catalysis 

分 类 号：O64[理学—物理化学]