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Enhanced CO 2 Electroreduction on Neighboring Zn/Co Monomers by Electronic Effect
Author(s) -
Zhu Wenjin,
Zhang Lei,
Liu Sihang,
Li Ang,
Yuan Xintong,
Hu Congling,
Zhang Gong,
Deng Wanyu,
Zang Ketao,
Luo Jun,
Zhu Yuanmin,
Gu Meng,
Zhao ZhiJian,
Gong Jinlong
Publication year - 2020
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201916218
Subject(s) - xanes , monomer , density functional theory , extended x ray absorption fine structure , chemistry , x ray absorption spectroscopy , electronic structure , faraday efficiency , absorption spectroscopy , metal , absorption (acoustics) , spectroscopy , inorganic chemistry , crystallography , materials science , electrochemistry , computational chemistry , electrode , polymer , organic chemistry , physics , quantum mechanics , composite material
It is of great significance to reveal the detailed mechanism of neighboring effects between monomers, as they could not only affect the intermediate bonding but also change the reaction pathway. This paper describes the electronic effect between neighboring Zn/Co monomers effectively promoting CO 2 electroreduction to CO. Zn and Co atoms coordinated on N doped carbon (ZnCoNC) show a CO faradaic efficiency of 93.2 % at −0.5 V versus RHE during a 30‐hours test. Extended X‐ray absorption fine structure measurements (EXAFS) indicated no direct metal–metal bonding and X‐ray absorption near‐edge structure (XANES) showed the electronic effect between Zn/Co monomers. In situ attenuated total reflection‐infrared spectroscopy (ATR‐IR) and density functional theory (DFT) calculations further revealed that the electronic effect between Zn/Co enhanced the *COOH intermediate bonding on Zn sites and thus promoted CO production. This work could act as a promising way to reveal the mechanism of neighboring monomers and to influence catalysis.