Molecular Engineering of Metal Complexes for Electrocatalytic Carbon Dioxide Reduction: From Adjustment of Intrinsic Activity to Molecular Immobilization

The electrocatalytic CO2 reduction reaction (ECO2RR) is one promising method for storing intermittent clean energy in chemical bonds and producing fuels. Among various kinds of catalysts for ECO2RR, molecular metal complexes with well‐defined structures are convenient for studies of their rational d...

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Published in:Angewandte Chemie International Edition Vol. 61; no. 44; pp. e202205301 - n/a
Main Authors: Yang, Zhi‐Wen, Chen, Jin‐Mei, Qiu, Li‐Qi, Xie, Wen‐Jun, He, Liang‐Nian
Format: Journal Article
Language:English
Published: Weinheim Wiley Subscription Services, Inc 02.11.2022
Edition:International ed. in English
Subjects:
Carbon Dioxide
Catalysts
Chemical bonds
Chemical reduction
Clean energy
Coordination compounds
Electrocatalytic Reduction
Immobilization
Ligand Modification
Metal Complex Catalysts
Metal complexes
Molecular Immobilization
Organic chemistry
ISSN:1433-7851, 1521-3773, 1521-3773
Online Access:Get full text
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Summary:The electrocatalytic CO2 reduction reaction (ECO2RR) is one promising method for storing intermittent clean energy in chemical bonds and producing fuels. Among various kinds of catalysts for ECO2RR, molecular metal complexes with well‐defined structures are convenient for studies of their rational design, structure–reactivity relationships, and mechanisms. In this Review, we summarize the molecular engineering of several N‐based metal complexes including Re/Mn bipyridine compounds and metal macrocycles, concluding with general modification strategies to devise novel molecular catalysts with high intrinsic activity. Through physical adsorption, covalent linking, and formation of a periodic backbone, these active molecules can be heterogenized into immobilized catalysts with more practical prospects. Finally, significant challenges and opportunities based on molecular catalysts are discussed. This Review focuses on molecular catalysts for the electrocatalytic CO2 reduction reaction (ECO2RR) including metal bipyridines and macrocycle complexes, and summarizes the molecular engineering strategies developed to regulate the intrinsic catalytic efficiency and modify the electrode. Guidelines are provided for the rational design of ECO2RR catalytic systems.
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ISSN:1433-7851
1521-3773
1521-3773
DOI:10.1002/anie.202205301