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Polypyrrole reinforced ZIF-67 with modulated facet exposure and billion-fold electrical conductivity enhancement towards robust photocatalytic CO_(2) reduction

查看全文 作　　者：Xuzhou [1,2]Yuan;Qiaoqiao [1,2]Mu;Songlin [1,2]Xue;Yanhui [1,2]Su;Yanlei [1,2]Zhu;Hao [1,2]Sun;Zhao [1,2]Deng;Yang [1,2]Peng 高影响力作者 机构地区：[1]Soochow Institute for Energy and Materials Innovations,College of Energy,Soochow University,Suzhou 215006,China;[2]Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province,Soochow University,Suzhou 215006,China高影响力机构 出　　处：《Journal of Energy Chemistry》索引2021年第30卷第9期,共7页高影响力期刊 基　　金：supported by the National Natural Science Foundation of China (Nos. 22072101, 22075193, 51911540473);the Natural Science Research Project of Jiangsu Higher Education Institutions of China (18KJA480004);the Key Technology Initiative of Suzhou Municipal Science and Technology Bureau (SYG201934) Six Talent Peaks Project in Jiangsu Province (TD-XCL-006);the Priority Academic Program Development (PAPD) of Jiangsu Higher Education Institutions;the support from the Honorary Professor Program of Jiangsu Province。 摘　　要：The implementation of metal organic frameworks(MOFs) as the co-catalysts in hybrid photocatalytic systems puts requirements on both their charge-carrying capability and solvent stability. In the current study, in order to simultaneously promote the electrical conductivity and water stability of ZIF-67, an insitu monomer trapping strategy is deployed to synthesize polypyrrole(PPy)-reinforced ZIF-67 ensembles.Through coordination modulation, the incremental addition of pyrrole monomers enables to alter the crystal morphology of ZIF-67 from rhombic dodecahedra to truncated rhombic dodecahedra, and further to cubes. Upon polymerization, the resulted composite, in comparison to ZIF-67, demonstrates a billionfold conductivity enhancement, much improved chemical stability in pronated solvents, as well as largely retained specific surface area and porosity, enabling it functioning as an outstanding co-catalyst for catalyzing robust photocatalytic CO_(2) reduction. Furthermore, a PPy-mediated electron harvest and relay mechanism is proposed for rationalizing the enhanced photocatalytic performance. 关 键 词：ZIF-67 POLYPYRROLE Coordination modulation Electrical conductivity Photocatalytic CO_(2)RR
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