Tuning C─N Coupling Mode by Cu─In Dual Metal Sites in Covalent Organic Framework for Enhanced Urea Electrosynthesis DOI Open Access

Nan Wang,

Yuan Zhang, Chunfeng Shao

и другие.

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 28, 2025

Abstract Electrochemical conversion of CO 2 and NO 3 − to high value‐added urea is a win–win strategy for both resources the environment. However, yield rate selectivity are still low. In this work, Cu metals grafted into interlayers an imine‐linked covalent organic framework (COF) form stable Cu─In dual metal sites by strong coordination hydroxyl O imine N atoms in framework. It found that optimal CuIn 1.07 ‐COF electrocatalyst exhibits impressive 2924.4 µg h −1 mg Faradaic efficiency (FE) 54.7% H‐cell, which surpasses most previously reported catalysts electrosynthesis. situ spectroscopy theoretical calculations reveal due stronger electronic interaction between In, * NH intermediate generated on site from reduction, then couples with neighbor produce lower energy barrier, effectively promotes electrochemical co‐reduction urea. The work provides new clues understanding structure‐performance relationship

Язык: Английский

Tuning C─N Coupling Mode by Cu─In Dual Metal Sites in Covalent Organic Framework for Enhanced Urea Electrosynthesis DOI Open Access

Nan Wang,

Yuan Zhang, Chunfeng Shao

и другие.

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 28, 2025

Abstract Electrochemical conversion of CO 2 and NO 3 − to high value‐added urea is a win–win strategy for both resources the environment. However, yield rate selectivity are still low. In this work, Cu metals grafted into interlayers an imine‐linked covalent organic framework (COF) form stable Cu─In dual metal sites by strong coordination hydroxyl O imine N atoms in framework. It found that optimal CuIn 1.07 ‐COF electrocatalyst exhibits impressive 2924.4 µg h −1 mg Faradaic efficiency (FE) 54.7% H‐cell, which surpasses most previously reported catalysts electrosynthesis. situ spectroscopy theoretical calculations reveal due stronger electronic interaction between In, * NH intermediate generated on site from reduction, then couples with neighbor produce lower energy barrier, effectively promotes electrochemical co‐reduction urea. The work provides new clues understanding structure‐performance relationship

Язык: Английский

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