文献类型：期刊文献

英文题名：Fabricating pyridinic N-B sites in porous carbon as efficient metal-free electrocatalyst in conversion CO2 into CH4

作者：Zhao, Yuying[1,2,3,4,5] Yuan, Qixin[4,5] Fan, Mengmeng[1,2,3,4,5] Wang, Ao[1,2,3] Sun, Kang[1,2,3] Wang, Zeming[6] Jiang, Jianchun[1,2,3,4,5]

第一作者：Zhao, Yuying

通信作者：Fan, MM[1];Jiang, JC[1];Fan, MM[2];Jiang, JC[2];Fan, MM[3];Jiang, JC[3];Fan, MM[4];Jiang, JC[4]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Nanjing 210042, Jiangsu, Peoples R China;[2]Key Lab Biomass Energy & Mat, Nanjing 210042, Jiangsu, Peoples R China;[3]Natl Engn Lab Biomass Chem Utilizat, Nanjing 210042, Peoples R China;[4]Nanjing Forestry Univ, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat Fo, Nanjing 210037, Peoples R China;[5]Nanjing Forestry Univ, Coll Chem Engn, Int Innovat Ctr Forest Chem & Mat, Nanjing 210037, Peoples R China;[6]Shanghai Univ, Sch Environm & Chem Engn, Inst Nanochem & Nanobiol, Shanghai 200444, Peoples R China

年份：2023

卷号：34

期号：8

外文期刊名：CHINESE CHEMICAL LETTERS

收录：;Scopus(收录号：2-s2.0-85161721665);WOS:【SCI-EXPANDED(收录号:WOS:001022505100001)】；

基金：This work was 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 Utiliza-tion 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

外文关键词：Carbon-based electrocatalyst; Porous carbon; Pyridinic N-B; CO 2 reduction; CH 4 selectivity

摘要：Electrochemical reduction of CO2 (CO2RR) to value-added chemicals is an attractive strategy for green-house 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 CO2RR, respectively. This carbon electrocatalyst exhibits excellent selectivity toward CO2 reduction to CH4 with the faradaic efficiency of 68% at -0.50 V vs. RHE. As demon-strated by density functional theory, a proper adsorbed energy of *CO and *CH2O are generated on the pyridinic N-B site resulting into high CH4 selectivity. Therefore, this study provides a novel method to modulate active sites of carbon-based electrocatalyst to obtain high CH4 selectivity.& COPY; 2023 Published by Elsevier B.V. on behalf of Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences.