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在等离子介导电催化CO2减少中发现光电子和光热效应

Yan Wei¹, Zijie Mao¹, Tian-Wen Jiang¹

¹Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Department of Chemistry, Fudan University, Shanghai, 200438, China.

Angewandte Chemie (International ed. in English)

|February 6, 2024

概括

局部表面等离子体共振 (LSPR) 电催化剂可选择性地提高二氧化碳的减少. 这项研究揭示了LSPR.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
催化剂是一种催化剂.

背景情况:

通过等离子体介导的电催化夫妇局部化表面等离子体共振 (LSPR) 与电化学激活.
一个关键的挑战是解开应用潜力下的等离子体衰变的光电子和光热效应.

研究的目的:

在二氧化碳减排中对白银 (Ag) 电催化剂的主要等离子体效应进行定量研究.
了解选择性反应控制的机制,通过合等离子体和电化学.

主要方法:

在Ag电催化剂上利用LSPR介导的二氧化碳减排作为模型系统.
在现场使用减弱的全反射表面增强红外吸收光谱 (ATR-SEIRAS).

主要成果:

光电效应在一个广泛的潜在窗口中对二氧化碳减少占主导地位.
在 -0.6 V RHE 处,LSPR 激发显著提高了 CO 电流效率 (17 倍) 和部分电流密度 (100 倍).
LSPR抑制了H2进化,而光热效应则主导了H2进化在更负的潜力下.

结论:

通过LSPR的光电子效应,证明了减少二氧化碳的选择性增强.
透露了通过含有碳酸的C1中间体,塑促成的桥式结合CO的形成.
提供了通过合等离子体和电化学调节界面反应的机制理解.

关键词:

在ATR-SEIRASAS中使用.减少二氧化碳的反应反应.血电催化剂的使用光电子和光热效应的效应.

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