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缺陷诱导的CuBi集群的三重协同调制,用于增强的尿素电合成

Yingchao Yu¹, Xiandi Ma², Yanmei Huang¹

¹Institute of Molecular Plus, Department of Chemistry, School of Science, Tianjin University, Tianjin, 300072, China.

Angewandte Chemie (International ed. in English)

|December 29, 2025

概括

富含缺陷的CuBi集群通过稳定关键中间体来增强电化学尿素合成. 这种缺陷工程方法显著提高了从二氧化碳和酸盐中生产尿素的效率.

科学领域:

电化学电化学电化学
材料科学材料科学材料科学
催化剂是一种催化剂.

背景情况:

二氧化碳 (CO2) 和酸盐 (NO3-) 的电化学C-N合为尿素合成提供了一个可持续的途径.
动力限制和中间稳定阻碍了高效的尿素电合成.
催化剂的缺陷工程提出了一个克服这些挑战的策略.

研究的目的:

为了研究富含缺陷的CuBi集群 (D-CuBi) 对尿素电合成性能的影响.
阐明缺陷在促进C-N合和稳定关键中间体中的作用.
了解缺陷功能如何影响反应动力学和整体效率.

主要方法:

富有缺陷的CuBi集群 (D-CuBi) 的合成.
在尿素合成中对D-CuBi性能进行系统的研究.
密度函数理论 (DFT) 计算和现场电化学光谱分析.

主要成果:

D-CuBi中的缺陷促进了CO2吸附,并阻止了关键*NO2中间体的脱附.
缺陷部位促进活跃的水分子吸附,加速反应动力学.
D-CuBi 在 -1.0 V 和 RHE 之间实现了 53.1% 的法拉代克尿素效率和 2.57 μmol h-1 cm-2 的产率,比完整的 CuBi.Bi 提高了十倍.

结论:

CuBi集群的缺陷工程是增强尿素电合成的可行策略.
由于改善的中间稳定性和加速的动力学,D-CuBi催化剂表现出卓越的性能.
这项工作为优化通过缺陷处理从CO2和NO3中生产尿素提供了关键的见解.

关键词:

一个 CuBi 集群.在CN合器上.缺陷的缺陷缺陷的缺陷三重协同调制的三重协同调制尿素的电合成尿素的电合成.

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