Ionic porous polyamide derived N-doped carbon towards highly selective electroreduction of CO_(2)  

作　　者：Mingdong Sun Dongxin Pan Tingting Ye Jing Gu Yu Zhou Jun Wang 

机构地区：[1]State Key Laboratory of Materials-Oriented Chemical Engineering,College of Chemical Engineering,Nanjing Tech University,Nanjing 210009,China [2]School of Chemistry and Chemical Engineering,Anhui University of Technology,Maanshan 243002,China

出　　处：《Chinese Journal of Chemical Engineering》2023年第3期212-221,共10页中国化学工程学报（英文版）

基　　金：support from the National Natural Science Foundation of China ( 22072065, 22178162, U1662107, and 21476109);Six talent peaks project in Jiangsu Province (JNHB-035);State Key Laboratory of Materials-Oriented Chemical Engineering (KL18-09);the Project of Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)。

摘　　要：Electrochemical CO_(2) reduction reaction(CO_(2) RR) has attracted growing attention in energy storage and sustainable production of fuels and chemicals. N-doped carbon materials are preferred metal-free electrocatalysts, but it remains one challenge to finely engineer the active sites and porosity. Herein, we demonstrated that ionic porous polyamides were a kind of versatile precursors to prepare functional carbon materials in a one-step pyrolysis process. The polyamide precursors allowed the maintenance of abundant N species at high temperatures. The existence of ionic moieties and large specific surface area of the precursors promoted the formation of larger porosity carbon with a large specific surface area and sufficient active graphitic-N species by controlling the pyrolysis temperature. The catalyst was highly selective in the CO_(2) RR to produce CO with a maximum Faraday efficiency above 99%, attributable to the improved mass transfer in a large porosity system. This work shows that ionic polyamides are promising carbon precursors for the fabrication of metal-free electrocatalysts for CO_(2) RR.

关 键 词：Carbon dioxide ELECTROCHEMISTRY Reduction Ionic mesoporous polyamide N-doped carbon material 

分 类 号：TQ426[化学工程] X701[环境科学与工程—环境工程]