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      https://www.ias.ac.in/article/fulltext/pram/069/02/0277-0283

    • Keywords

       

      Core-shell particles; silica particles; gold particles.

    • Abstract

       

      This paper reports a systematic investigation of the growth and attachment of small gold nanoparticles to the functionalized surface of larger silica nanoparticles by three different methods. Nearly monodispersed silica particles and gold nanoparticles were prepared by sol–gel method. The size of the particle could be altered by changing the concentration of reactants, temperature and the time for which they react. The nanocore-shell particles prepared by three different methods were studied using scanning electron microscopy (SEM), UV–vis spectroscopy and Fourier transform infrared spectroscopy. We have found that the third method (c), a combination of the first two methods (a) and (b), has given better results.

    • Author Affiliations

       

      Deepika Kandpal1 Suchita Kalele2 S K Kulkarni2

      1. Department of Physics, G.B. Pant University of Agriculture & Technology, Pantnagar 263 145, India
      2. Department of Physics, University of Pune, Pune 411 007, India
    • Dates

       
  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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