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亚纳米 Cu 集群的原子协调工程,用于选择性 CO₂ 电还原到多碳醇

Qingfeng Hua¹, Guang Feng¹, Lina Su¹

¹School of Chemistry and Chemical Engineering, Beijing Key Laboratory for Chemical Power Source and Green Catalysis, Beijing Institute of Technology, Beijing, 100081, P.R. China.

Angewandte Chemie (International ed. in English)

|October 25, 2025

概括

硫和协调的铜亚纳米集群 (Cu/SNC) 提高了对多碳 (C2+) 酒精的选择性,而不是乙烯. 这一二氧化碳电减的突破为生产有价值的化学品提供了新的途径.

科学领域:

电化学电化学电化学
催化剂是一种催化剂.
材料科学材料科学材料科学

背景情况:

二氧化碳 (CO2) 到多碳 (C2+) 醇的电化学转化受到竞争性乙烯路径的阻碍.
控制关键中间体的键能量对于将选择性转向酒精或乙烯至关重要.

研究的目的:

通过二氧化碳电还原开发一种催化剂,通过二氧化碳电还原优先产生C2+酒精而不是乙烯.
调查硫 (S) 和 (N) 协调在调整铜亚纳米集群 (Cu/SNC) 针对特定反应路径的电子特性中的作用.

主要方法:

合成S和N协调的Cu亚纳米集群 (Cu/SNC).
电化学表征以评估二氧化碳减排性能.
机制研究,以了解S和N dopants在中间吸附和反应途径中的作用.

主要成果:

/SNC实现了59.1%的C2+酒精选择性和7.21.21的酒精与乙烯比率.
S和N的协调调节了关键中间体 (*CO和*OCHCH2) 的键能量,削弱了Cu-O相互作用并加强了C-O键.
N和S补充剂协同促进了CO2激活,并促进了C2+物种形成的不对称C-C合.

结论:

S 和 N 协调的 Cu 亚纳米集群提供了一个框架,用于精确调节 CO2 电还原中的反应路径.
这种方法使得C2+酒精的高度选择性生产成为可能,为可持续的化学合成提供了一个有前途的途径.

关键词:

原子协调工程原子协调工程 C2+ 酒精产品的产品二氧化碳的电还原 CO2 的电还原.亚纳米 Cu 集群的 Cu 集群.

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