界面和价态对提高 La2CuO4 的电化学二氧化碳还原活性的协同效应

IF 3.4 3区化学 Q2 CHEMISTRY, PHYSICAL

Catalysis Communications Pub Date : 2024-01-01 DOI:10.1016/j.catcom.2023.106836

Shiya Bian , Xuekun Jin , Jinxing Mi , Fengjuan Chen , Li Cai , Ziyu Wang , Junhua Li , Jianjun Chen

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引用次数: 0

摘要

电化学二氧化碳还原反应（CER）转化为甲烷（CH4）受到了极大关注。在此，我们提出了一种有效的方法，通过在脲修饰的 La2CuO4 催化剂上创建两相界面来促进 CO2 到 CH4 的转化。最优化的催化剂对 CH4 的选择性最高（22%），在与可逆氢电极相比-1 V 的电位下，活性（14 mA cm-2）和稳定性（5 h）最佳。CER 性能的提高可归因于两相内界面效应的建立，这有利于 Cu2+ 的还原并促进活性位点的富集。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Synergistic effects of interface and valence state on boosting electrochemical CO2 reduction activity of La2CuO4

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Synergistic effects of interface and valence state on boosting electrochemical CO2 reduction activity of La2CuO4

The electrochemical CO₂ reduction reaction (CER) to methane (CH₄) has received great attention. Here, we proposed an efficient method to facilitate the conversion of CO₂-to-CH₄ by creating a two-phase interface over urea-modified La₂CuO₄ catalyst. The most optimized one exhibits the highest selectivity (22%) for CH₄ and the best activity (14 mA cm⁻²) and stability (5 h) at the potential of −1 V vs. reversible hydrogen electrode. The enhanced CER performance can be attributed to the establishment of interfacial effect within the two-phase, which facilitates the reduction of Cu²⁺ and promotes the active sites concentration.

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来源期刊

Catalysis Communications 化学-物理化学

CiteScore

6.20

自引率

2.70%

发文量

183

审稿时长

46 days

期刊介绍： Catalysis Communications aims to provide rapid publication of significant, novel, and timely research results homogeneous, heterogeneous, and enzymatic catalysis.