Structural and optical investigations of SiO2-CdS core-shell particles

Hebalkar, Neha ; Kharrazi, Sharmin ; Ethiraj, Anita ; Urban, J. ; Fink, R. ; Kulkarni, S. K. (2004) Structural and optical investigations of SiO2-CdS core-shell particles Journal of Colloid and Interface Science, 278 (1). pp. 107-114. ISSN 0021-9797

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Cadmium sulfide nanoparticles (~5 nm), chemically capped using thioglycerol molecules, have been anchored onto silica particles (~80 nm) functionalized with 3-aminopropyltrimethoxysilane. Transmission electron microscopy clearly showed that at a low concentration of cadmium sulfide, nanoparticles were discretely and more or less uniformly attached onto the silica particles. At a high concentration of cadmium sulfide nanoparticles, an approximately 6-nm-thick compact shell of cadmium sulfide was formed on the silica particles. In both cases the nanocrystalline nature of cadmium sulfide particles was preserved, as is evident from X-ray diffraction and optical absorption spectra.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Core-shell Particles; Nanoparticles; Transmission Electron Microscopy; Fourier Transform Infrared Spectroscopy; Cadmium Sulfide; Silica
ID Code:18010
Deposited On:17 Nov 2010 13:21
Last Modified:04 Jun 2011 08:46

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