In situ construction of thiol-silver interface for selectively electrocatalytic CO_(2)reduction  

作　　者：Ying Chen Feng Hu Yanan Hao Yonghan Wang Yaoyi Xie Hui Wang Lijie Yin Deshuang Yu Hongchao Yang Jun Ma Dan Kai Linlin Li Shengjie Peng 

机构地区：[1]College of Materials Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China [2]CAS Key Laboratory of Nano-Bio Interface,Suzhou Institute of Nano-Tech and Nano-Bionics,Chinese Academy of Sciences,Suzhou 215123,China [3]Institute of Materials Research and Engineering(IMRE),Singapore 138634,Singapore [4]Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education),College of Chemistry,Nankai University,Tianjin 300071,China

出　　处：《Nano Research》2022年第4期3283-3289,共7页纳米研究（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China(No.2210011636);the Natural Science Foundation of Jiangsu Province(No.BK20210311);China Postdoctoral Science Foundation(Nos.2021M691561 and 2021T140319);Jiangsu Planned Projects for Postdoctoral Research Funds(No.2021K547C);CAS Key Laboratory of Nano-Bio Interface(No.21NBI02);the Fundamental Research Funds for the Central Universities(No.NS2021037).

摘　　要：Electrochemical CO_(2)reduction(ECR)is one of the most effective methods to obtain carbonaceous chemicals and reduce greenhouse gases passingly under the ambient condition.However,efficient electrocatalysts featured with high selectivity and stability are still lacking.A novel molecule-mediated Ag electrocatalyst with capped thiols is rationally designed for high-performance ECR.The thiol-capped and carbon-supported Ag nanostructures(Ag-TC)are formed by in situ electrochemical reduction from three-dimentional(3D)Ag-thiol metal-organic compound with cysteine as the anchor agent and carbon source.Ag-TC exhibits high selectivity and stability for CO_(2)conversion to CO(86.7%),which is more catalytically active than that of common Ag nanoparticles.The function of thiols for ECR is proved by replacing cysteine with alanine without thiol group.Meanwhile,alternatively replacing and removing the surface molecules on the Ag foil further demonstrate the effct of thiols.This work enlightens the promise of in situ construction method for molecule capped metal electrocatalyst towards selective and stable ECR.

关 键 词：electrochemical CO_(2)reduction molecule-mediated catalyst THIOLS Ag nanoparticle 

分 类 号：O64[理学—物理化学]