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Electrochemical synthesis of Au@semiconductor core–shell nanocrystals guided by single particle plasmonic imaging

Plasmonic photocatalysts have opened up a new direction in utilization of visible light and promoting photocatalytic efficiency. An electrochemical deposition method is reported to synthesise metal@semiconductor (M@SC) core–shell nanocrystals. Due to the strong affinity of Au atoms to S(2–) and Se(2...

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Autores principales: Wang, Hui, Zhao, Wei, Xu, Cong-Hui, Chen, Hong-Yuan, Xu, Jing-Juan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Royal Society of Chemistry 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7006628/
https://www.ncbi.nlm.nih.gov/pubmed/32110293
http://dx.doi.org/10.1039/c9sc02804h
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author Wang, Hui
Zhao, Wei
Xu, Cong-Hui
Chen, Hong-Yuan
Xu, Jing-Juan
author_facet Wang, Hui
Zhao, Wei
Xu, Cong-Hui
Chen, Hong-Yuan
Xu, Jing-Juan
author_sort Wang, Hui
collection PubMed
description Plasmonic photocatalysts have opened up a new direction in utilization of visible light and promoting photocatalytic efficiency. An electrochemical deposition method is reported to synthesise metal@semiconductor (M@SC) core–shell nanocrystals. Due to the strong affinity of Au atoms to S(2–) and Se(2–) reduced at negative potential, CdS, CdSe and ZnS were selectively deposited on the surface of the Au core to form a uniform shell with a clear metal/semiconductor interface, which conquered the barrier caused by the large lattice mismatch between the two components. Plasmonic effects increased the photocatalytic performance, as well as provided a chance to in situ monitor the surface nucleation and growth. The structure formation process could be observed under dark-field microscopy (DFM) in real-time and precisely controlled via the scattering color, intensity and wavelength. The proof-of-concept strategy combines the electrochemical deposition and plasmonic imaging, which provides a universal approach in controllable synthesis of core–shell heterostructures, and leads to the improvement of plasmonic photocatalysts.
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spelling pubmed-70066282020-02-27 Electrochemical synthesis of Au@semiconductor core–shell nanocrystals guided by single particle plasmonic imaging Wang, Hui Zhao, Wei Xu, Cong-Hui Chen, Hong-Yuan Xu, Jing-Juan Chem Sci Chemistry Plasmonic photocatalysts have opened up a new direction in utilization of visible light and promoting photocatalytic efficiency. An electrochemical deposition method is reported to synthesise metal@semiconductor (M@SC) core–shell nanocrystals. Due to the strong affinity of Au atoms to S(2–) and Se(2–) reduced at negative potential, CdS, CdSe and ZnS were selectively deposited on the surface of the Au core to form a uniform shell with a clear metal/semiconductor interface, which conquered the barrier caused by the large lattice mismatch between the two components. Plasmonic effects increased the photocatalytic performance, as well as provided a chance to in situ monitor the surface nucleation and growth. The structure formation process could be observed under dark-field microscopy (DFM) in real-time and precisely controlled via the scattering color, intensity and wavelength. The proof-of-concept strategy combines the electrochemical deposition and plasmonic imaging, which provides a universal approach in controllable synthesis of core–shell heterostructures, and leads to the improvement of plasmonic photocatalysts. Royal Society of Chemistry 2019-08-13 /pmc/articles/PMC7006628/ /pubmed/32110293 http://dx.doi.org/10.1039/c9sc02804h Text en This journal is © The Royal Society of Chemistry 2019 http://creativecommons.org/licenses/by-nc/3.0/ This article is freely available. This article is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported Licence (CC BY-NC 3.0)
spellingShingle Chemistry
Wang, Hui
Zhao, Wei
Xu, Cong-Hui
Chen, Hong-Yuan
Xu, Jing-Juan
Electrochemical synthesis of Au@semiconductor core–shell nanocrystals guided by single particle plasmonic imaging
title Electrochemical synthesis of Au@semiconductor core–shell nanocrystals guided by single particle plasmonic imaging
title_full Electrochemical synthesis of Au@semiconductor core–shell nanocrystals guided by single particle plasmonic imaging
title_fullStr Electrochemical synthesis of Au@semiconductor core–shell nanocrystals guided by single particle plasmonic imaging
title_full_unstemmed Electrochemical synthesis of Au@semiconductor core–shell nanocrystals guided by single particle plasmonic imaging
title_short Electrochemical synthesis of Au@semiconductor core–shell nanocrystals guided by single particle plasmonic imaging
title_sort electrochemical synthesis of au@semiconductor core–shell nanocrystals guided by single particle plasmonic imaging
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7006628/
https://www.ncbi.nlm.nih.gov/pubmed/32110293
http://dx.doi.org/10.1039/c9sc02804h
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