Isolated ultrasmall Bi nanosheets for efficient CO_(2)-to-formate electroreduction
作者机构：Key Laboratory for Ultrafine Materials of Ministry of EducationShanghai Engineering Research Center of Hierarchical NanomaterialsFrontiers Science Center for Materiobiology and Dynamic ChemistrySchool of Materials Science and EngineeringEast China University of Science&TechnologyShanghai 200237China School of Chemical EngineeringEast China University of Science&TechnologyShanghai 200237China
出 版 物：《Nano Research》 (纳米研究（英文版）)
年 卷 期：2022年第15卷第2期
页 面：1409-1414页
核心收录：
学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学]
基 金：supported by the National Natural Science Foundation of China(Nos.21808061,21838003,91834301,and 22008069) the Shanghai Scientific and Technological Innovation Project(Nos.18JC1410500 and 19JC1410400) the Innovation Program of Shanghai Municipal Education Commission,“the Fundamental Research Funds for the Central Universities”(No.222201718002) the Shanghai Sailing Program(No.20YF1410200)
主 题：bismuth CO_(2)reduction electrocatalysis formate ultrasmall nanosheets
摘 要：Electrochemical reduction of CO_(2) to valuable formate as liquid fuel is a promising way to alleviate the greenhouse *** edge active sites in bismuth(Bi)nanosheets play a critical role in the electrochemical reduction of CO_(2) into formate,which enable the operation of CO_(2) reduction with high cathodic energy efficiency,especially under large current densities of≥200 mA/cm^(2).However,the undesirable reconstruction of small Bi nanosheets into large nanosheets leads to the decreasing of edge active sites during *** we report stable isolated ultrasmall bismuth nanosheets-synthesized by in-situ electrochemical transformation of ligands covered bismuth vanadate-on silver nanowires as an efficient electrocatalyst for CO_(2)-to-formate *** cooperative electrocatalyst achieves a formate current density of 186 mA/cm^(2) and a cathodic energy efficiency of 75%for formate,which is the only best compared to the literature ***。Raman and morphologic measurements demonstrate that the excellent energy utilization of the electrocatalyst is originated from the rich edge active sites with Bi-O species of the ultrasmall Bi nanosheets.
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