Coral-shaped 3D assemblies of gold nuclei induced by UV irradiation and its disintegration

Shengchun Yang; Ruili Zhang; Qingfeng Wang; Binjun Ding; Yaping Wang

doi:10.1016/j.colsurfa.2007.06.018

Coral-shaped 3D assemblies of gold nuclei induced by UV irradiation and its disintegration

Shengchun Yang
, Ruili Zhang
, Qingfeng Wang
, Binjun Ding
, Yaping Wang

School of Physics

Xi'an Jiaotong University

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

In this paper, a coral-shaped three-dimensional (3D) assembly of gold nuclei was formed by UV irradiation of HAuCl₄ solution in the presence of citric acid. Such coral-shaped nanostructure was built up of numerous nuclei less than 5 nm in diameter. The results showed that the initially formed nuclei spontaneously experienced a self-assembly process to form this 3D nanostructure. Transmission electron microscopy (TEM) images indicated that this coral-shaped 3D nanostructure was disintegrated during the ripening process. The UV irradiation-assisted ripening process induced the formation of single-crystalline nanonetworks. However, when the ripening process was performed without UV irradiation, the nanoparticles with various shapes were observed. UV-vis spectra indicated that the unreduced AuCl₄^- was responsible for the formation of the coral-shaped 3D nanostructure.

Original language	English
Pages (from-to)	174-179
Number of pages	6
Journal	Colloids and Surfaces A: Physicochemical and Engineering Aspects
Volume	311
Issue number	1-3
DOIs	https://doi.org/10.1016/j.colsurfa.2007.06.018
State	Published - 1 Dec 2007

Keywords

Continuous synthesis
Coral-shaped nanostructure
Nanonetworks
UV irradiation

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10.1016/j.colsurfa.2007.06.018

Cite this

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title = "Coral-shaped 3D assemblies of gold nuclei induced by UV irradiation and its disintegration",

abstract = "In this paper, a coral-shaped three-dimensional (3D) assembly of gold nuclei was formed by UV irradiation of HAuCl4 solution in the presence of citric acid. Such coral-shaped nanostructure was built up of numerous nuclei less than 5 nm in diameter. The results showed that the initially formed nuclei spontaneously experienced a self-assembly process to form this 3D nanostructure. Transmission electron microscopy (TEM) images indicated that this coral-shaped 3D nanostructure was disintegrated during the ripening process. The UV irradiation-assisted ripening process induced the formation of single-crystalline nanonetworks. However, when the ripening process was performed without UV irradiation, the nanoparticles with various shapes were observed. UV-vis spectra indicated that the unreduced AuCl4- was responsible for the formation of the coral-shaped 3D nanostructure.",

keywords = "Continuous synthesis, Coral-shaped nanostructure, Nanonetworks, UV irradiation",

author = "Shengchun Yang and Ruili Zhang and Qingfeng Wang and Binjun Ding and Yaping Wang",

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doi = "10.1016/j.colsurfa.2007.06.018",

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TY - JOUR

T1 - Coral-shaped 3D assemblies of gold nuclei induced by UV irradiation and its disintegration

AU - Yang, Shengchun

AU - Zhang, Ruili

AU - Wang, Qingfeng

AU - Ding, Binjun

AU - Wang, Yaping

PY - 2007/12/1

Y1 - 2007/12/1

N2 - In this paper, a coral-shaped three-dimensional (3D) assembly of gold nuclei was formed by UV irradiation of HAuCl4 solution in the presence of citric acid. Such coral-shaped nanostructure was built up of numerous nuclei less than 5 nm in diameter. The results showed that the initially formed nuclei spontaneously experienced a self-assembly process to form this 3D nanostructure. Transmission electron microscopy (TEM) images indicated that this coral-shaped 3D nanostructure was disintegrated during the ripening process. The UV irradiation-assisted ripening process induced the formation of single-crystalline nanonetworks. However, when the ripening process was performed without UV irradiation, the nanoparticles with various shapes were observed. UV-vis spectra indicated that the unreduced AuCl4- was responsible for the formation of the coral-shaped 3D nanostructure.

AB - In this paper, a coral-shaped three-dimensional (3D) assembly of gold nuclei was formed by UV irradiation of HAuCl4 solution in the presence of citric acid. Such coral-shaped nanostructure was built up of numerous nuclei less than 5 nm in diameter. The results showed that the initially formed nuclei spontaneously experienced a self-assembly process to form this 3D nanostructure. Transmission electron microscopy (TEM) images indicated that this coral-shaped 3D nanostructure was disintegrated during the ripening process. The UV irradiation-assisted ripening process induced the formation of single-crystalline nanonetworks. However, when the ripening process was performed without UV irradiation, the nanoparticles with various shapes were observed. UV-vis spectra indicated that the unreduced AuCl4- was responsible for the formation of the coral-shaped 3D nanostructure.

KW - Continuous synthesis

KW - Coral-shaped nanostructure

KW - Nanonetworks

KW - UV irradiation

UR - https://www.scopus.com/pages/publications/35648993509

U2 - 10.1016/j.colsurfa.2007.06.018

DO - 10.1016/j.colsurfa.2007.06.018

M3 - 文章

AN - SCOPUS:35648993509

SN - 0927-7757

VL - 311

SP - 174

EP - 179

JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects

JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects

IS - 1-3

ER -

Coral-shaped 3D assemblies of gold nuclei induced by UV irradiation and its disintegration

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Keywords

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