| Autor: |
Dong Jiang, Ran Bu, Wei Xia, Yichen Hu, Mengchen Zhou, Enqing Gao, Toru Asahi, Yusuke Yamauchi, Jing Tang |
| Předmět: |
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| Zdroj: |
Materials Reports: Energy; Feb2023, Vol. 3 Issue 1, p1-7, 7p |
| Abstrakt: |
Electrocatalytic conversion of carbon dioxide to high value-added chemicals is a promising method for solving the energy crisis and global warming. Electrochemical active metal-containing conjugated polymers have been widely studied for heterogeneous carbon dioxide reduction. In the present contribution, we designed and synthesized a stable cobalt phthalocyanine-based conjugated polymer, named CoPPc-TFPPy-CP, and also explored its electrocatalytic application in carbon dioxide reduction to liquid products in an aqueous solution. In the catalyst, cobalt phthalocyanine acts as building blocks connected with 1,3,6,8-tetrakis(4-formyl phenyl)pyrenes via iminelinkages, leading to mesoporous formation polymers with the pore size centered at 4.1 nm. And the central cobalt atoms shifted to a higher oxidation state after condensation. With these chemical and structural natures, the catalyst displayed a remarkable electrocatalytic CO2 reduction performance with an ethanol Faradaic efficiency of 43.25% at -1.0 V vs RHE. While at the same time, the electrochemical reduction process catalyzed by cobalt phthalocyanine produced only carbon monoxide and hydrogen. To the best of our knowledge, CoPPc-TFPPy-CP is the first example among organic polymers and metal-organic frameworks that produces ethanol from CO2 with a remarkable selectivity. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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