Abstract
Nanocomposite of copper sulfide (CuS /PVA) have been synthesized according to chemical precipitation method at temperature 65oC by simple reaction between copper acetate (Cu (ac)) and thiourea (H2NCSNH2) at pH=9. Polyvinyl Alcohol (PVA), used as capping agent, was found to play a key role in the confinement process. The characterization of the product was done by UV-VIS spectroscopy, atomic force microscopy (AFM) and x-ray diffraction (XRD). The X-ray diffraction showed the covellite phase of copper sulphides with hexagonal crystal structure. The sizes of the sample as prepared were calculated by Debye-Scherrer formula according to XRD spectra. A UV-VIS optical spectroscopy study was carried out to determine the band gap of the nanocomposite CuS to be about 3.3 eV.
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