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- E-ISSN 2288-8985
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- P-ISSN1225-0163
- E-ISSN2288-8985
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Preparation and characterization of CdS nanoparticle on the surface of silica nanoparticles
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2007, v.20 no.5, pp.413-418
&
A.Gopalan,
(2007). Preparation and characterization of CdS nanoparticle on the surface of silica nanoparticles. Analytical Science and Technology, 20(5), 413-418.
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Abstract
Poly(vinylpyrrolidone) stabilized cadmium sulfide (CdS) nanoparticles were loaded onto the surface of silica (<TEX>$SiO_2$</TEX>) nanoparticles by using <TEX>${\gamma}$</TEX>-irradiation. TEM micrograph reveals the presence of ~20nm sized CdS nanoparticles on the surface of <TEX>$SiO_2$</TEX> nanoparticles. XRD patterns confirm the crystalline. PL spectra of the simple PVP-stabilized CdS nanoparticle and <TEX>$SiO_2$</TEX>@CdS composite confirm the differences in the emission characteristics between them. Two prominent emission peaks were noted around 550 nm and 600 nm for PVP-stabilized CdS nanoparticles). The emission peaks noted for the PVP-stabilized CdS nanoparticles were found to be blue shifted for <TEX>$SiO_2$</TEX>@CdS composites. Besides, an additional emission peak around 450 nm was noticed for the <TEX>$SiO_2$</TEX>@CdS composite. The presence of CdS nanoparticles influence the emission characteristics and induce quantum confinement effect.
- keywords
- CdS nanoparticle, <TEX>${\gamma}$</TEX>-Irradiation, Silica nanoparticle, <TEX>$SiO_2$</TEX>@CdS, Emission spectra
Reference
1
Klug, (1974) X-ray diffractionprocedure for polycrystalline and amorphous materialsWiley,
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