Facet effects on bimetallic ZnSn hydroxide microcrystals for selective electrochemical CO2 reduction

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外文摘要：Employing crystal facets to regulate the catalytic properties in electrocatalytic carbon dioxide reduction reaction(eCO2RR)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 eCO2RR.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 CO2 molecules,the formation of intermediate in the rate-determining step,and the desorption of C1 products of CO and HCOOH molecules.

外文关键词：

ZnSn(OH)6Crystal facetsElectrochemical carbon dioxide reductionC1 productDensity functional theory

作者：

Liu Han、Cheng-wei Wang、Shan-shan Luo、Ying-tang Zhou、Bing Li、Ming Liu

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作者单位：

School of Chemistry and Chemical Engineering,Harbin Institute of Technology,Heilongjiang Province,150000,China

National Engineering Research Center for Marine Aquaculture,Marine Science and Technology College,Zhejiang Ocean University,Zhoushan,Zhejiang Province,316004,China

基金：

中央高校基本科研业务费专项Fundamental Science Research of Harbin Institute of TechnologyFundamental Science Research of Harbin Institute of TechnologyFundamental Science Research of Harbin Institute of Technology

项目编号：

AUGA2160100119AUGA9803100120AUGA5710001120

出版年：

2024

DOI：

10.1016/j.gee.2023.04.004

绿色能源与环境(英文)

CSTPCD

ISSN：

年,卷(期)：2024.9(8)