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Updated: Jun 25, 2025

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在酸性介质中,Pd诱导的极化Cu⁰-Cu⁺位点用于电催化CO₂-to-C₂₊的转化

Bowen Wang¹, Lu Song¹, Chen Peng¹

¹Laboratory of Advanced Materials, Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200438, China.

Journal of colloid and interface science

|May 26, 2024

概括

铜催化剂中的合物增强了酸性CO2降低到C2+产品的作用,通过稳定活性点和抑制进化. 这一策略提高了能源效率和碳转化在酸性电解质.

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:

酸性二氧化碳减排反应 (CO2RR) 面临的挑战包括二氧化碳损失和碳酸盐沉积在中性/性介质中.
演化反应 (HER) 在酸性环境中竞争,降低多碳 (C2+) 产品的能效.

研究的目的:

开发一种 (Pd) 合铜 (Cu) 基催化剂,用于在酸性电解质中增强CO2RR.
稳定极化Cu0-Cu+活性位点,改善C-C合步骤,同时抑制HER.

主要方法:

在一个基于铜 (Cu) 的催化剂上使用了 (Pd) 兴奋剂策略.
在6%的单原子分散度的最佳Pd兴奋剂比率下研究了催化剂性能.
分析了催化剂结构,活性点和电化学性能.

主要成果:

最佳 6% Pd 注稳定了地下氧气 (O_Sub) 和极化 Cu0-Cu+ 位点,减少了 C-C 合能障碍.
在2.18V与RHE相比,C2+产品的峰值法拉代效率 (FE) 为64.0%,达到2.18V.
证明了高的二氧化碳单通转换效率 (SPCE) 的73.2%和稳定性~150小时.

结论:

Pd-doped Cu/Cu2O 催化剂为在酸性介质中高效的电催化 CO2 转化提供了一个有前途的方法.
该战略通过稳定活性位点和抑制HER来提高C2+产品的选择性和能源效率.
获得的高碳转化效率和电化学稳定性表明工业相关性.

关键词:

C(2+) 的产品.减少反应反应的二氧化碳.一个单个原子的Pd.两极分化的网站.强酸是一种强酸.

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