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Core-shell structure nanoparticles with silver core and tin dioxide shell were
synthesized via a facile soft-chemical process. Optical absorption spectra of tin dioxide
deposited silver core nanoparticles, obtained by UV-Visible spectroscopy, showed distinct
shifts, both in peak position and its intensity, compared with bare silver nanoparticles, which
indicated that silver-tin dioxide core-shell nanoparticles appeared to be formed. The core-shell
structure formation was characterized by X-ray diffraction (XRD) and transmission electron
microscopy (TEM). XRD pattern showed distinct major peaks corresponding to cubic silver
and minor peaks due to tetragonal tin dioxide phases. TEM results, from which we could
estimate the nanoparticles size as well as their shell thickness, demonstrated that thin tin
dioxide shells encapsulated the silver core particles.
Keywords: silver; tin dioxide; core-shell; nanoparticles; nanocomposite |
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