Thiosulfate-mediated seeded growth of Au@AuAg yolk–shell nanocubes with surface concavity: optical and catalytic properties

Min, Yuanyuan; Li, Xiaoyu; Wang, Yingying; Zhao, Yan; Liu, Feng; Liu, Maochang; Zheng, Yiqun

doi:10.1039/d3ce00717k

CrystEngComm

2023

DOI: 10.1039/d3ce00717k

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Thiosulfate-mediated seeded growth of Au@AuAg yolk–shell nanocubes with surface concavity: optical and catalytic properties

Yuanyuan Min,

Xiaoyu Li,

Yingying Wang

et al.

Abstract: Gold-Silver (Au-Ag) nanocrystals with the combination of concave surfaces and hollow interiors can be of great interest due to the distinctive structural merits. Herein, we introduce a facile strategy based...

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Cited by 2 publications

References 39 publications

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Preparation of Au@AuAg yolk-shell nanoparticles with porous surface and their catalytic reduction of 4-nitrophenol

Yao,

Zhao,

et al. 2025

Vacuum

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Preparation of Au@AuAg yolk-shell nanoparticles with porous surface and their catalytic reduction of 4-nitrophenol

Yao,

Zhao,

et al. 2025

Vacuum

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Selenium-Doped Seeded Growth of Truncated Octahedral Gold Nanocrystals with Surface Concavities for Surface-Enhanced Raman Spectroscopy

Han,

Chen,

Sun

et al. 2024

Langmuir

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Concave nanocrystals stand out as a testament to the importance of the nanoscale morphology in dictating the functional properties of materials. In this report, we introduce a facile synthesis method for producing gold (Au) nanocrystals with a truncated octahedral morphology that features surface concavities (Au CNTOs). The incorporation of selenium (Se) doping into the truncated octahedral Au seeds was essential for their enlargement and the formation of concave structures. By simply adjusting the quantity of seeds, we could control the size of the nanocrystals while maintaining their distinctive morphology and surface concavity. The formation mechanism suggests that Se doping likely passivates the side faces, thereby slowing growth and promoting atomic deposition at the edges and corners. The resulting Sedoped Au CNTOs exhibited strong localized surface plasmon resonance (LSPR) absorptions in the visible spectrum and the SERS performance of their assemblies was demonstrated through crystal violet detection, reaching enhancement factors around 10 5 . This study presents an innovative approach to synthesizing concave Au nanocrystals through the incorporation of selenium during a seeded growth process, offering insights into the strategic design of plasmonic nanostructures.

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Thiosulfate-mediated seeded growth of Au@AuAg yolk–shell nanocubes with surface concavity: optical and catalytic properties

Abstract: Gold-Silver (Au-Ag) nanocrystals with the combination of concave surfaces and hollow interiors can be of great interest due to the distinctive structural merits. Herein, we introduce a facile strategy based...

Cited by 2 publications

References 39 publications

Preparation of Au@AuAg yolk-shell nanoparticles with porous surface and their catalytic reduction of 4-nitrophenol

Preparation of Au@AuAg yolk-shell nanoparticles with porous surface and their catalytic reduction of 4-nitrophenol

Selenium-Doped Seeded Growth of Truncated Octahedral Gold Nanocrystals with Surface Concavities for Surface-Enhanced Raman Spectroscopy

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