Efficient Electroreduction of CO_(2)to CH_(4)on Ultrasmall Copper Nanoparticles  

作　　者：Yichi Zhang Dawei Zhou Min Wang Zijun Zhang Shuaiqiang Jia Mingyuan He Chunjun Chen Haihong Wu Buxing Han 

机构地区：[1]Shanghai Key Laboratory of Green Chemistry and Chemical Processes,State Key Laboratory of Petroleum Molecular&Process Engineering,School of Chemistry and Molecular Engineering,East China Normal University,Shanghai 200062 [2]State Key Laboratory of Petroleum Molecular and Process Engineering,SKLPMPE,Sinopec Research Institute of Petroleum Processing Co.,LTD.,Beijing 100083 [3]East China Normal University,Shanghai 200062 [4]Institute of Eco-Chongming,Chongming District,Shanghai 202162 [5]Beijing National Laboratory for Molecular Sciences,CAS Key Laboratory of Colloid and Interface and Thermodynamics,CAS Research/Education Center for Excellence in Molecular Sciences,Center for Carbon Neutral Chemistry,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190

出　　处：《CCS Chemistry》2024年第12期2876-2881,共6页中国化学会会刊(英文)

基　　金：the National Key Research and Development Program of China(grant no.2023YFA1507901);National Natural Science Foundation of China(grant nos.22003070,22293015,and 22121002).

摘　　要：Electroreduction of carbon dioxide(CO_(2))into valuable chemicals and fuels is a promising strategy to mitigate energy and environmental problems.However,the poor selectivity and inadequate electrochemical stability prevent practical applications.In this work,we prepared ultrasmall copper(Cu)nanoparticles by using tannic acid as a complexing agent and stablizer.The ultrasmall Cu nanoparticles(3.4 nm)exhibited outstanding performance for CO_(2)electroreduction to CH_(4).The Faradaic efficiency of CH_(4)could reach up to 68%at-1.2 V versus reversible hydrogen electrode(RHE),with high current density of 475 mA·cm^(-2).The ultrasmall Cu nanoparticles could enhance the CO adsorption and H2O activation,resulting in the high selectivity of CH_(4).

关 键 词：CO_(2) METHANE ELECTROCHEMICAL ultrasmall nanoparticle green chemistry 

分 类 号：O64[理学—物理化学]