Structure–Activity Relationship of the Polymerized Cobalt Phthalocyanines for Electrocatalytic Carbon Dioxide Reduction

Polymeric frameworks composed of molecular complexes have been attractive for the outstanding activity, selectivity, and stability toward CO2-to-CO conversion. In this work, polymerized cobalt phthalocyanines (CoPPc) with different functionalities were investigated with a series of spectroscopy char...

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Bibliographic Details
Published in:Journal of physical chemistry. C 2020-07, Vol.124 (30), p.16501-16507
Main Authors: Chen, Jiacheng, Zhu, Minghui, Li, Jiayu, Xu, Jing, Han, Yi-Fan
Format: Article
Language:English
Subjects:
C: Surfaces, Interfaces, Porous Materials, and Catalysis
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Summary:Polymeric frameworks composed of molecular complexes have been attractive for the outstanding activity, selectivity, and stability toward CO2-to-CO conversion. In this work, polymerized cobalt phthalocyanines (CoPPc) with different functionalities were investigated with a series of spectroscopy characterizations, controlled-potential electrolysis, Tafel analysis, cyclic voltammetry analysis, and isotope labeling studies. The electronic structure of the Co center was revealed to be directly affected by the peripheral substituents via an inductive effect. Besides, the relationship between electronic structure and activity of the CoPPc-based catalysts for CO2 electroreduction was successfully elucidated at the molecular level.
ISSN:1932-7447
1932-7455
DOI:10.1021/acs.jpcc.0c04741