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A Stable and Conductive Metallophthalocyanine Framework for Electrocatalytic Carbon Dioxide Reduction in Water
Author(s) -
Huang Ning,
Lee Ka Hung,
Yue Yan,
Xu Xiaoyi,
Irle Stefan,
Jiang Qiuhong,
Jiang Donglin
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.202005274
Subject(s) - catalysis , faraday efficiency , aqueous solution , electrochemical reduction of carbon dioxide , chemical engineering , materials science , cobalt , oxygenate , inorganic chemistry , carbon fibers , metal organic framework , carbon dioxide , chemistry , electrochemistry , carbon monoxide , electrode , organic chemistry , composite material , composite number , adsorption , engineering
Transformation of carbon dioxide to high value‐added chemicals becomes a significant challenge for clean energy studies. Here a stable and conductive covalent organic framework was developed for electrocatalytic carbon dioxide reduction to carbon monoxide in aqueous solution. The cobalt(II) phthalocyanine catalysts are topologically connected via robust phenazine linkage into a two‐dimensional tetragonal framework that is stable under boiling water, acid, or base conditions. The 2D lattice enables full π conjugation along x and y directions as well as π conduction along the z axis across the π columns. With these structural features, the electrocatalytic framework exhibits a faradaic efficiency of 96 %, an exceptional turnover number up to 320 000, and a long‐term turnover frequency of 11 412 hour −1 , which is a 32‐fold improvement over molecular catalyst. The combination of catalytic activity, selectivity, efficiency, and durability is desirable for clean energy production.