文献类型：期刊文献

英文题名：Cobalt phthalocyanine coordinated to pyridine-functionalized carbon nanotubes with enhanced CO2 electroreduction

作者：Zhu, Minghui[1];Chen, Jiacheng[1];Guo, Rong[2];Xu, Jing[1];Fang, Xiangchen[2];Han, Yi-Fan[1,3]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]SINOPEC, Dalian Res Inst Petr & Petrochem, Beijing 116045, Peoples R China;[3]Zhengzhou Univ, Sch Chem Engn & Energy, Res Ctr Heterogeneous Catalysis & Engn Sci, Zhengzhou 450001, Henan, Peoples R China

年份：2019

卷号：251

起止页码：112

外文期刊名：APPLIED CATALYSIS B-ENVIRONMENTAL

收录：;EI(收录号：20191306706127);WOS:【SCI-EXPANDED(收录号:WOS:000468014400012)】；

基金：We gratefully thank the Start-up Grant of East China University of Science and Technology (SG1503A003), National Key R&D Program of China (2018YFB0605803) and Fundamental Research Funds for the Central Universities (222201718002).

语种：英文

外文关键词：Carbon dioxide; Electroreduction; Carbon nanotube; Pyridine; Cobalt phthalocyanine

摘要：Electrochemical reduction of CO2 is promising to utilize the intermittent renewable electricity and transform CO2 into value-added products, simultaneously. Herein, we designed a cobalt phthalocyanine-based catalyst supported on pyridine-functionalized carbon nanotubes (CoPc-py-CNT). This novel hybrid catalyst exhibited a high activity (TOFCO: 34.5 s(-1) at -0.63 V vs. RHE) and selectivity (FECO > 98%) for electrochemical CO2 reduction. To the best of our knowledge, it is the best one among all reported molecular based electrocatalysts for CO2-to-CO conversion. Furthermore, structure characterizations (such as Raman and X-rays photoelectron spectroscopy), loading-dependent electrochemical analysis and mechanistic studies revealed that pyridine groups, through axial coordination with Co, not only functioned as physical promoters to improve the dispersion of cobalt phthalocyanine but also tuned the electronic structure of Co sites to increase the intrinsic turnover frequency.