期刊
PRAMANA-JOURNAL OF PHYSICS
卷 69, 期 2, 页码 277-283出版社
INDIAN ACAD SCIENCES
DOI: 10.1007/s12043-007-0128-z
关键词
core-shell particles; silica particles; gold particles
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.
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