Journal
MATERIALS CHARACTERIZATION
Volume 62, Issue 1, Pages 94-98Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.matchar.2010.11.003
Keywords
Nanomaterials; Sonochemical method; Vesicle template; Cadmium sulfide; Nano-hollow spheres
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CdS hollow nanospheres with diameters ranging from 40 to 150 nm have been synthesized by a surfactant-assisted sonochemical route. The successful vesicle templating indicates that the outer leaflet of the bilayer is the receptive surface in the controlled growth of CdS nanoparticles which provide the unique reactor for the nucleation and mineralization growth of CdS nanoparticles. The CdS nanostructures obtained were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, ultraviolet-visible spectroscopy and photoluminescence spectroscopy. Structural characterization of hollow CdS nanospheres indicates that these products packed with square subunits having sizes between 5 and 7 nm in diameter. The formation of the hollow nanostructure was explained by a vesicle template mechanism, in which sonication and surfactant play important roles. The band-edge emission and surface luminescence of the CdS nanoparticles were observed. (C) 2010 Elsevier Inc. All rights reserved.
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