Single site catalyst with enzyme-mimic micro-environment for electroreduction of CO2
Single site catalysts provide a unique platform for mimicking natural enzyme due to their tunable interaction between metal center and coordinated ligand. However, most works have focused on preparing structural and functional models of nature enzyme, with less reports also taking the local chemical...
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Published in | Nano research Vol. 15; no. 3; pp. 1817 - 1823 |
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Main Authors | , , , , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Beijing
Tsinghua University Press
01.03.2022
Springer Nature B.V |
Subjects | |
Online Access | Get full text |
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Summary: | Single site catalysts provide a unique platform for mimicking natural enzyme due to their tunable interaction between metal center and coordinated ligand. However, most works have focused on preparing structural and functional models of nature enzyme, with less reports also taking the local chemical environment, i.e., functional/catalytic residues around the active site which is an essential feature of enzymes, into consideration. Herein, we report a Co-centered porphyrinic polymer containing the enzyme-mimic micro-environment, where the linker triazole over CoN
4
site enables formation of hydrogen bond with the *COOH intermediate, thus promoting the electrocatalytic reduction of CO
2
. As-prepared catalyst achieves the CO
2
-to-CO conversion of 5, 788 h
−1
turnover frequency value and near unit (∼ 96%) faradaic efficiency at −0.61 V versus reversible hydrogen electrode. This strategy will bring new dimension of designing highly active single-site catalysts. |
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ISSN: | 1998-0124 1998-0000 |
DOI: | 10.1007/s12274-021-3756-6 |