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

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Abstract

In this study, we report a simple synthesis of multiple Au nanodots core-silica shell nanoparticles (multi-Au@SiO2 NPs). The Au@SiO2 hybrid nanoparticles were synthesized in a water-in-oil microemulsion with a composition of polyoxyethylene(10) tertoctylphenyl ether (Triton X-100)/1-hexanol/cyclohexane/H2O 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@SiO2 can be easily tuned by the molar ratio of HAuCl4 to NaBH4 and the volume ratio of HAuCl4 aqueous solution to TEOS. As the morphologies of Au@SiO2 nanoparticles varied, the optical properties also changed as revealed by UV absorption spectrum. These Au@SiO2 hybrid nanoparticles which possess these properties make them fascinating candidates for a variety of applications such as catalysis and life science.

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Acknowledgments

We gratefully acknowledge financial support from the National Natural Science Foundation of China (21203109) and Ji’nan Youth Science and Technology Star Program (2013040).

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Authors and Affiliations

  1. National Engineering Technology Research Center for Colloidal Materials, Shandong University, Jinan, 250100, People’s Republic of China

    Yingjie Ren & Xia Xin

  2. Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan, 250100, People’s Republic of China

    Yingjie Ren, Xia Xin, Jinglin Shen & Lin Wang

  3. China Research Institute of Daily Chemical Industry, Taiyuan, Shanxi, 030001, People’s Republic of China

    Yingjie Ren, Weiyue Tang & Yongjie Zhang

Authors
  1. Yingjie Ren
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  2. Xia Xin
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  3. Weiyue Tang
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  4. Yongjie Zhang
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  5. Jinglin Shen
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  6. Lin Wang
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Correspondence to Xia Xin.

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Ren, Y., Xin, X., Tang, W. et al. Reverse microemulsion-mediated synthesis of Au@SiO2 hybrid nanoparticles with different morphologies. Colloid Polym Sci 293, 1695–1703 (2015). https://doi.org/10.1007/s00396-015-3553-4

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  • DOI: https://doi.org/10.1007/s00396-015-3553-4

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