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Partial Coordination‐Perturbed Bi‐Copper Sites for Selective Electroreduction of CO 2 to Hydrocarbons
Author(s) -
Wang Rui,
Liu Jiang,
Huang Qing,
Dong LongZhang,
Li ShunLi,
Lan YaQian
Publication year - 2021
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.202105343
Subject(s) - electrochemistry , copper , electronegativity , chemistry , catalysis , coordination complex , inorganic chemistry , halogen , combinatorial chemistry , metal , electrode , organic chemistry , alkyl
Abstract In the electrochemical CO 2 reduction reaction (CO 2 RR), it is challenging to develop a stable, well‐defined catalyst model system that is able to examine the influence of the synergistic effect between adjacent catalytic active sites on the selective generation of C1 or C2 products. We have designed and synthesized a stable crystalline single‐chain catalyst model system for electrochemical CO 2 RR, which involves four homomorphic one‐dimensional chain‐like compounds ( Cu‐PzH , Cu‐PzCl , Cu‐PzBr , and Cu‐PzI ). The main structural difference of these four chains is the substituents of halogen atoms with different electronegativity on the Pz ligands. Consequently, different synergistic effects between bi‐copper centers lead to changes in the faradic efficiency (FECH4:FEC2 H4). This work provides a simple and stable crystalline single‐chain model system for systematically studying the influence of coordination microenvironment on catalytically active centers in the CO 2 RR.