Expression of Concern: Luminescence study of monodispersed ZnS nanoparticles. (25th June 2012)

• Record Type: Journal Article
• Authors: Murugadoss, G.; Ramasamy, V.
• Is Part Of: Luminescence. Volume 28:Number 2(2013:Mar./Apr.)
• Page Start: 195
• Page End: 201
• Publication Date: 2012-06-25
• Subjects: nanoparticles -- PVP -- SHMP -- photoluminescence -- quantum confinement; Luminescence -- Periodicals; Bioluminescence -- Periodicals; Chemiluminescence -- Periodicals; Luminescence -- Periodicals; 535.35
• DOI: 10.1002/bio.2363
• Languages: English
• ISSNs: 1522-7235

Abstract

ABSTRACT: Monodispersed ZnS nanoparticles have been successfully synthesized by a chemical precipitation method in an air atmosphere using polyvinylpyrrolidone (PVP) and sodium hexametaphosphate (SHMP) as surfactants. The synthesized nanoparticles were characterized by X‐ray diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared spectrometer (FT‐IR), UV–Vis optical absorption and photoluminescence (PL) spectra. Prepared surfactants capped ZnS nanoparticles are highly homogeneous and well dispersed. Optical absorption spectra showed a strong blue shift from the uncapped particles due to the quantum confinement effect. The capped ZnS emission intensity is enhanced than more the uncapped particles. The size of the synthesized particles is around 4–6.5 nm range. Copyright © 2012 John Wiley & Sons, Ltd.