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Highly Selective Electrochemical Reduction of CO 2 to Alcohols on an FeP Nanoarray
Author(s) -
Ji Lei,
Li Lei,
Ji Xuqiang,
Zhang Ya,
Mou Shiyong,
Wu Tongwei,
Liu Qian,
Li Baihai,
Zhu Xiaojuan,
Luo Yonglan,
Shi Xifeng,
Asiri Abdullah M.,
Sun Xuping
Publication year - 2020
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201912836
Subject(s) - electrochemistry , selectivity , catalysis , faraday efficiency , adsorption , density functional theory , reversible hydrogen electrode , chemistry , electrode , electrocatalyst , selective reduction , hydrogen , inorganic chemistry , chemical engineering , organic chemistry , working electrode , computational chemistry , engineering
Electrochemical reduction of CO 2 into various chemicals and fuels provides an attractive pathway for environmental and energy sustainability. It is now shown that a FeP nanoarray on Ti mesh (FeP NA/TM) acts as an efficient 3D catalyst electrode for the CO 2 reduction reaction to convert CO 2 into alcohols with high selectivity. In 0.5 m KHCO 3 , such FeP NA/TM is capable of achieving a high Faradaic efficiency (FECH3 OH ) up to 80.2 %, with a total FECH3 OH + C2 H5 OHof 94.3 % at −0.20 V vs. reversible hydrogen electrode. Density functional theory calculations reveal that the FeP(211) surface significantly promotes the adsorption and reduction of CO 2 toward CH 3 OH owing to the synergistic effect of two adjacent Fe atoms, and the potential‐determining step is the hydrogenation process of *CO.
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