Reversibly Modulating Plasmon‐mediated Chemical Reaction via Electrode Potential on Reliable Copper Nanoelectrode
Reversibly Modulating Plasmon‐mediated Chemical Reaction via Electrode Potential on Reliable Copper Nanoelectrode
复制标题
通过可靠的铜纳米电极上的电极电势可逆地调节等离子体介导的化学反应
DOI：
10.1002/anie.202302215
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
He, Jin
中科院分区：
文献类型：
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作者：
Ghimire, Govinda;Guo, Jing;Halmagian, Robert;He, Jin
等离子体金属纳米结构对于等离子体介导的化学反应（PMCR）和表面增强拉曼光谱（Sers）是必不可少的。纳米结构通常由钴金属金和银制成。铜（Cu）的使用较少，主要是由于在制造稳定的纳米结构的困难。然而，铜是一个有吸引力的选择，其强等离子体性质，高催化活性，和相对便宜的价格。在此，我们制作了可调谐的，可靠的，高效的铜纳米电极（CuNEs）。使用时间分辨电化学Sers，我们全面研究了芳香胺和硝基修饰在CuNE表面上的可逆化学转化。其PMCR通过改变表面粗糙度、Cu的氧化态和施加的电极电位得到良好控制。因此，我们表明，铜纳米结构使更好的调查PMCR，电化学和铜催化之间的相互作用。
Plasmonic metal nanostructures are essential for plasmon‐mediated chemical reactions (PMCRs) and surface‐enhanced Raman spectroscopy (SERS). The nanostructures are commonly made from the coinage metals gold and silver. Copper (Cu) is less used mainly due to the difficulties in fabricating stable nanostructures. However, Cu is an attractive option with its strong plasmonic properties, high catalytic activities, and relatively cheap price. Herein, we fabricated tunable, reliable, and efficient Cu nanoelectrodes (CuNEs). Using time‐resolved electrochemical SERS, we have comprehensively studied the reversible chemical transformations between aromatic amine and nitro groups modified on the CuNE surface. Their PMCRs are well‐controlled by changing the surface roughness, the oxidation states of Cu, and the applied electrode potential. We thus demonstrate that the Cu nanostructures enable better investigations in the interplays between PMCR, electrochemistry, and Cu catalysis.