A novel method to prepare Au nanocage@SiO2 nanoparticle

Gold （Au） nanocage@SiO2 nanoparticles are prepared by a novel approach. The silver （Ag） nanocube@SiO2 structure is synthetized firstly. Next, the method of etching a SiO2 shell by boiling water is adopted to change the penetration rate of AuCl4- through the SiO2 shell. AuCl4- can penetrate through s...

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Bibliographic Details
Published in中国物理B：英文版 no. 12; pp. 358 - 363
Main Author 蒋童童 尹乃强 刘玲 雷洁梅 朱立新 许小亮
Format Journal Article
LanguageEnglish
Published 01.12.2013
Subjects
二氧化硅
准备金
培养时间
硅纳米颗粒
红外区域
纳米SiO2
纳米笼
表面等离子体共振
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ISSN1674-1056
2058-3834
DOI10.1088/1674-1056/22/12/126102

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Summary:Gold （Au） nanocage@SiO2 nanoparticles are prepared by a novel approach. The silver （Ag） nanocube@SiO2 structure is synthetized firstly. Next, the method of etching a SiO2 shell by boiling water is adopted to change the penetration rate of AuCl4- through the SiO2 shell. AuCl4- can penetrate through silica shells of different thickness values to react with the Ag nanocube core by changing the incubation time. The surface plasma resonance （SPR） peak of synthetic Au nanocage@SiO2 can be easily tuned into the near-infrared region. Besides, CdTeS quantum dots （QDs） are successfully connected to the surface of Au nanocage@SiO2, which testifies that the incubation process does not change the property of silica.
Bibliography:Ag nanocube Au nanocage silica nanostructure
Jiang Tong-Tong, Yin Nai-Qiang, Liu Ling, Lei Jie-Mei, Zhu Li-Xin, Xu Xiao-Liang （Department of Physics, University of Science and Technology of China, Hefei 230026, China ）
Gold （Au） nanocage@SiO2 nanoparticles are prepared by a novel approach. The silver （Ag） nanocube@SiO2 structure is synthetized firstly. Next, the method of etching a SiO2 shell by boiling water is adopted to change the penetration rate of AuCl4- through the SiO2 shell. AuCl4- can penetrate through silica shells of different thickness values to react with the Ag nanocube core by changing the incubation time. The surface plasma resonance （SPR） peak of synthetic Au nanocage@SiO2 can be easily tuned into the near-infrared region. Besides, CdTeS quantum dots （QDs） are successfully connected to the surface of Au nanocage@SiO2, which testifies that the incubation process does not change the property of silica.
11-5639/O4
ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/22/12/126102