Premium
Layered Confinement Reaction: Atomic‐level Dispersed Iron–Nitrogen Co‐Doped Ultrathin Carbon Nanosheets for CO 2 Electroreduction
Author(s) -
Tuo Jinqin,
Zhu Yihua,
Cheng Ling,
Li Yuhang,
Yang Xiaoling,
Shen Jianhua,
Li Chunzhong
Publication year - 2019
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201901058
Subject(s) - catalysis , electrochemistry , materials science , electrocatalyst , carbon fibers , metal , faraday efficiency , reversible hydrogen electrode , nitrogen , hydrogen , nanotechnology , inorganic chemistry , chemical engineering , electrode , chemistry , working electrode , organic chemistry , composite material , composite number , engineering , metallurgy
High electrochemical over‐potential and low product selectivity are regarded as the main limitations of electroreduction of CO 2 . Here, we proposed a new strategy to synthesize metal porphyrin‐hybridized porous and ultra‐thin carbon nanosheets (MPPCN) by the confinement function of the layered template. The layered confinement reaction protects the coordination structure of metal and nitrogen atoms during subsequent high‐temperature treatment while ensuring the formation of ultra‐thin structures. This method effectively prevents the aggregation of metal atoms, so that the metal atoms exhibit a dispersed state of a single atomic level. MPPCN exhibit unexpected catalytic activity for electroreduction of CO 2 , and the catalytic reaction can be carried out at an over‐potential of 0.39 V. The faradaic efficiency of CO can reach 95.9 % at the potential of −0.7 V versus the reversible hydrogen electrode.