中国物理B ›› 2013, Vol. 22 ›› Issue (12): 126102-126102.doi: 10.1088/1674-1056/22/12/126102

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

A novel method to prepare Au nanocage@SiO2 nanoparticle

蒋童童, 尹乃强, 刘玲, 雷洁梅, 朱立新, 许小亮   

  1. Department of Physics, University of Science and Technology of China, Hefei 230026, China
  • 收稿日期:2013-03-20 修回日期:2013-04-18 出版日期:2013-10-25 发布日期:2013-10-25
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 51272246 and 81172082) and the Fundamental Research Funds for the Central Universities, China (Grant No. 2030000001).

A novel method to prepare Au nanocage@SiO2 nanoparticle

Jiang Tong-Tong (蒋童童), Yin Nai-Qiang (尹乃强), Liu Ling (刘玲), Lei Jie-Mei (雷洁梅), Zhu Li-Xin (朱立新), Xu Xiao-Liang (许小亮)   

  1. Department of Physics, University of Science and Technology of China, Hefei 230026, China
  • Received:2013-03-20 Revised:2013-04-18 Online:2013-10-25 Published:2013-10-25
  • Contact: Zhu Li-Xin, Xu Xiao-Liang E-mail:lx-zhu@163.com;xlxu@ustc.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 51272246 and 81172082) and the Fundamental Research Funds for the Central Universities, China (Grant No. 2030000001).

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摘要： 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.

关键词: Ag nanocube, Au nanocage, silica, nanostructure

Abstract: 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.

Key words: Ag nanocube, Au nanocage, silica, nanostructure

中图分类号:  (Structure of nanoscale materials)

  • 61.46.-w
78.40.-q (Absorption and reflection spectra: visible and ultraviolet) 78.67.Bf (Nanocrystals, nanoparticles, and nanoclusters) 78.67.Sc (Nanoaggregates; nanocomposites)