Reverse microemulsion-mediated synthesis of Au@SiO2 hybrid nanoparticles with different morphologies

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• 作者：Yingjie Ren ; Xia Xin ; Weiyue Tang ; Yongjie Zhang…
• 关键词：Gold ; Silica ; Nanoparticles ; Microemulsion ; Morphologies
• 刊名：Colloid & Polymer Science
• 出版年：2015
• 出版时间：June 2015
• 年：2015
• 卷：293
• 期：6
• 页码：1695-1703
• 全文大小：1,610 KB
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• 作者单位：Yingjie Ren (1) (2) (3)
  Xia Xin (1) (2)
  Weiyue Tang (3)
  Yongjie Zhang (3)
  Jinglin Shen (2)
  Lin Wang (2)
  
  1. National Engineering Technology Research Center for Colloidal Materials, Shandong University, Jinan, 250100, People鈥檚 Republic of China
  2. Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan, 250100, People鈥檚 Republic of China
  3. China Research Institute of Daily Chemical Industry, Taiyuan, Shanxi, 030001, People鈥檚 Republic of China
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Polymer Sciences
  Physical Chemistry
  Soft Matter and Complex Fluids
  Characterization and Evaluation Materials
  Food Science
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1435-1536

文摘

In this study, we report a simple synthesis of multiple Au nanodots core-silica shell nanoparticles (multi-Au@SiO<sub>2sub> NPs). The Au@SiO<sub>2sub> hybrid nanoparticles were synthesized in a water-in-oil microemulsion with a composition of polyoxyethylene(10) tertoctylphenyl ether (Triton X-100)/1-hexanol/cyclohexane/H<sub>2sub>O and have been fully characterized by transmission electron microscopy (TEM), high-resolution TEM (HR-TEM) observations, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared (FTIR), UV-vis measurements, and thermogravimetric analysis (TGA). The morphologies of the hybrid nanoparticles of Au@SiO<sub>2sub> can be easily tuned by the molar ratio of HAuCl<sub>4sub> to NaBH<sub>4sub> and the volume ratio of HAuCl<sub>4sub> aqueous solution to TEOS. As the morphologies of Au@SiO<sub>2sub> nanoparticles varied, the optical properties also changed as revealed by UV absorption spectrum. These Au@SiO<sub>2sub> hybrid nanoparticles which possess these properties make them fascinating candidates for a variety of applications such as catalysis and life science.