Observing atomic layer electrodeposition on single nanocrystals surface by dark field spectroscopy

Shu Hu, Jun Yi, Yue-Jiao Zhang, Kai-Qiang Lin, Bi-Ju Liu, Liang Chen, Chao Zhan, Zhi-Chao Lei, Juan-Juan Sun, Cheng Zong, Jian-Feng Li and Bin Ren ()
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Shu Hu: Xiamen University
Jun Yi: Xiamen University
Yue-Jiao Zhang: Xiamen University
Kai-Qiang Lin: Xiamen University
Bi-Ju Liu: Xiamen University
Liang Chen: Xiamen University
Chao Zhan: Xiamen University
Zhi-Chao Lei: Xiamen University
Juan-Juan Sun: Xiamen University
Cheng Zong: Xiamen University
Jian-Feng Li: Xiamen University
Bin Ren: Xiamen University

Nature Communications, 2020, vol. 11, issue 1, 1-7

Abstract: Abstract Underpotential deposition offers a predominant way to tailor the electronic structure of the catalytic surface at the atomic level, which is key to engineering materials with a high activity for (electro)catalysis. However, it remains challenging to precisely control and directly probe the underpotential deposition of a (sub)monolayer of atoms on nanoparticle surfaces. In this work, we in situ observe silver electrodeposited on gold nanocrystals surface from sub-monolayer to one monolayer by designing a highly sensitive electrochemical dark field scattering setup. The spectral variation is used to reconstruct the optical “cyclic voltammogram” of every single nanocrystal for understanding the underpotential deposition process on nanocrystals, which cannot be achieved by any other methods but are essential for creating novel nanomaterials.

Date: 2020
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DOI: 10.1038/s41467-020-16405-3

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