| 光谱学与光谱分析 |
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| Preparation of Au@SiO2 Core-Shell Nanoparticles: Controlling the Optical Properties |
| TAN En-zhong1, 2, YIN Peng-gang2*, HUANG Wei-feng2, YU Ge1, YU Chun-na1 |
1. Department of Mathematics and Physics, Beijing Institute of Technology Petrochemical, Beijing 102617, China
2. Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Environment, Beihang University, Beijing 100191, China |
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Abstract The authros developed a new approach to preparing the Au@SiO2 core-shell nanostructure. The morphology and stability of the composite were characterized by the UV-Vis absorption spectroscopy and transmission electron microscopy (TEM) methods. The stable SERS spectra were obtained from the PMBA-functionalized Au@SiO2 composite. In addition, the authros succeeded in adjusting the thickness of SiO2 layer by controlling the precursor consumption. The stability of Au@SiO2 in basic solution was studied and the results showed that the SiO2 shell was facile to be etched. The present work may provide a reference and gist for research on the preparation, storage and application of Au@SiO2.
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Received: 2012-05-18
Accepted: 2012-08-25
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Corresponding Authors:
YIN Peng-gang
E-mail: pgyin@sohu.com
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