Ultrasonic/surfactant assisted of CdS nano hollow sphere synthesis and characterization

Journal Article · Sat Jan 15 04:00:00 EST 2011 · Materials Characterization

DOI:https://doi.org/10.1016/J.MATCHAR.2010.11.003· OSTI ID:22063652

Borujeni, Ahmad Reza Afraz ^[1]; Najafi, Mojgan ^[2]; Bagheri, Ahmad ^[1]

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1. Department of Physical Chemistry, Faculty of Chemistry, Bu-Ali Sina University, P.O. Box 65174, Hamedan (Iran, Islamic Republic of)
2. Department of Materials Engineering, Hamedan University of Technology (HUT), Hamedan (Iran, Islamic Republic of)

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. -Research Highlights: {yields} CdS hollow nanospheres with diameters of 40-150 nm were synthesized. {yields} Nanoparticles were characterized by UV/Vis and photoluminescence. {yields} Nanospheres are composed of smaller nanocrystals with the average size of 6.8 nm. {yields} The band gap energy of the CdS nanoparticles is higher than its bulk value.

• OSTI ID: 22063652
• Journal Information: Materials Characterization, Journal Name: Materials Characterization Journal Issue: 1 Vol. 62; ISSN 1044-5803; ISSN MACHEX
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY
ABSORPTION SPECTROSCOPY
CADMIUM SULFIDES
EMISSION SPECTROSCOPY
LAYERS
MINERALIZATION
NANOSTRUCTURES
NUCLEATION
PARTICLES
PHOTOLUMINESCENCE
SCANNING ELECTRON MICROSCOPY
SPHERES
SURFACES
SURFACTANTS
SYNTHESIS
TRANSMISSION ELECTRON MICROSCOPY
ULTRAVIOLET RADIATION
X-RAY DIFFRACTION