首页|Elucidating the structure-activity relationship of Cu-Ag bimetallic catalysts for electrochemical CO2 reduction
Elucidating the structure-activity relationship of Cu-Ag bimetallic catalysts for electrochemical CO2 reduction
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Developing bimetallic catalysts is an effective strategy for enhancing the activity and selectivity of elec-trochemical CO2 reduction reactions,where understanding the structure-activity relationship is essential for catalyst design.Herein,we prepared two Cu-Ag bimetallic catalysts with Ag nanoparticles attached to the top or the bottom of Cu nanowires.When tested in a flow cell,the Cu-Ag catalyst with Ag nanopar-ticles on the bottom achieved a faradaic efficiency of 54％for ethylene production,much higher than the catalyst with Ag nanoparticles on the top.The catalysts were further studied in the H-cell and zero-gap MEA cell.It was found that placing the two metals in the intensified reaction zone is crucial to triggering the tandem reaction of bimetallic catalysts.Our work elucidates the structure-activity relationship of bimetallic catalysts for CO2 reduction and demonstrates the importance of considering both catalyst structures and cell characteristics to achieve high activity and selectivity.
Electrochemical CO2 reductionBimetallic catalystCu-AgStructure-activity relationship
Qining Huang、Lili Wan、Qingxuan Ren、Jingshan Luo
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Institute of Photoelectronic Thin Film Devices and Technology,State Key Laboratory of Photovoltaic Materials and Cells,Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin,Ministry of Education Engineering Research Center of Thin Film Photoelectronic Technology,Nankai University,Tianjin 300350,China
Frontiers Science Center for New Organic Matter,Nankai University,Tianjin 300071,China
Haihe Laboratory of Sustainable Chemical Transformations,Tianjin 300192,China
National Key Research and Development Program of ChinaTianjin Distinguished Young Scholars FundMajor Science and Technology Project of Anhui ProvinceAnhui Conch Group Co.,Ltdthe"111"ProjectNatural Science Foundation of Chinafellowship of China Postdoctoral Science Foundation
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