文献类型：期刊文献

中文题名：Fabricating pyridinic N-B sites in porous carbon as efficient metal-free electrocatalyst in conversion CO_(2)into CH_(4)

作者：Yuying Zhao[1,2] Qixin Yuan[2] Mengmeng Fan[1,2] Ao Wang[1] Kang Sun[1] Zeming Wang[3] Jianchun Jiang[1,2]

第一作者：Yuying Zhao

机构：[1]Institute of Chemical Industry of Forest Products,Chinese Academy of Forestry,Key Lab.of Biomass Energy and Material,Jiangsu Province,National Engineering Lab for Biomass Chemical Utilization,Nanjing 210042,China;[2]Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources,International Innovation Center for Forest Chemicals and Materials College of Chemical Engineering,Nanjing Forestry University,Nanjing 210037,China;[3]Institute of Nanochemistry and Nanobiology School of Environmental and Chemical Engineering,Shanghai University,Shanghai 200444,China

年份：2023

卷号：34

期号：8

起止页码：291-295

中文期刊名：中国化学快报:英文版

外文期刊名：Chinese Chemical Letters

收录：CSTPCD;;Scopus;CSCD:【CSCD2023_2024】；PubMed;

基金：supported by the Foundation of Jiangsu Key Lab of Biomass Energy and Material(No.JSBEM-S-202101);National Natural Science Foundation of China(No.51902162);the Foundation Research Project of Jiangsu Province(No.BK20221338);Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources,International Innovation Center for Forest Chemicals and Materials,Nanjing Forestry University,merit-based funding for Nanjing innovation and technology projects.

语种：英文

中文关键词：Carbon-based electrocatalyst;Porous carbon;Pyridinic N-B;CO_(2)reduction;CH_(4)selectivity

分类号：O61

摘要：Electrochemical reduction of CO_(2)(CO_(2)RR)to value-added chemicals is an attractive strategy for greenhouse gas mitigation and carbon recycle.Carbon material is one of most promising electrocatalysts but its product selectivity is limited by few modulating approaches for active sites.Herein,the predominant pyridinic N-B sites(accounting for 80%to all N species)are fabricated in hierarchically porous structure of graphene nanoribbons/amorphous carbon.The graphene nanoribbons and porous structure can accelerate electron and ion/gas transport during CO_(2)RR,respectively.This carbon electrocatalyst exhibits excellent selectivity toward CO_(2)reduction to CH_(4)with the faradaic efficiency of 68%at?0.50 V vs.RHE.As demonstrated by density functional theory,a proper adsorbed energy of?CO and?CH_(2)O are generated on the pyridinic N-B site resulting into high CH_(4)selectivity.Therefore,this study provides a novel method to modulate active sites of carbon-based electrocatalyst to obtain high CH_(4)selectivity.