Facet effects on bimetallic ZnSn hydroxide microcrystals for selective electrochemical CO_(2)reduction  

作　　者：Liu Han Cheng-wei Wang Shan-shan Luo Ying-tang Zhou Bing Li Ming Liu 

机构地区：[1]School of Chemistry and Chemical Engineering,Harbin Institute of Technology,Heilongjiang Province,150000,China [2]National Engineering Research Center for Marine Aquaculture,Marine Science and Technology College,Zhejiang Ocean University,Zhoushan,Zhejiang Province,316004,China

出　　处：《Green Energy & Environment》2024年第8期1314-1320,共7页绿色能源与环境（英文版）

基　　金：the Fundamental Research Funds for the Central Universities and the Fundamental Science Research of Harbin Institute of Technology(No.AUGA2160100119,AUGA9803100120,AUGA5710001120).

摘　　要：Employing crystal facets to regulate the catalytic properties in electrocatalytic carbon dioxide reduction reaction(eCO_(2)RR)has been well demonstrated on electrocatalysts containing single metals but rarely explored for bimetallic systems.Here,we synthesize ZnSn(OH)_(6)(ZSO)microcrystals(MCs)with distinct facets and investigate the facet effects in eCO_(2)RR.Electrochemical studies and in situ Fourier Transform Infrared Spectroscopy(in situ-FTIR)reveal that ZSO MCs produce mainly C1 products of HCOOH and CO.The{111}facet of the ZSO MCS exhibits higher selectivity and faradaic efficiency(FE)than that of the{100}facet over a wide range of potentials(-0.9 V∼-1.3 V versus RHE).Density Functional Theory(DFT)calculations elucidate that the{111}facet is favorable to the adsorption/activation of CO_(2)molecules,the formation of intermediate in the rate-determining step,and the desorption of C1 products of CO and HCOOH molecules.

关 键 词：ZnSn(OH)_(6) Crystal facets Electrochemical carbon dioxide reduction C1 product Density functional theory 

分 类 号：X701[环境科学与工程—环境工程] O643.36[理学—物理化学]