Abstract
Nanocrystalline copper sulphide (Cu2-xS) powders were synthesized by chemical precipitation from their aqueous solutions composed of different molar ratio of copper sulfate dehydrate (CuSO4.5H2O) and thiorea (NH2)2CS as source of Cu+2, S-2 ions respectively, and sodium ethylene diamine tetra acetic acid dehydrate (EDTA) as a complex agent. The compositions, morphological and structural properties of the nanopowders were characterized by energy dispersive spectroscopy (EDS), scanning electron microscope (SEM), and X-ray diffraction (XRD), respectively. The compositional results showed that the copper content was high and the Sulfur content was low for both CuS and Cu2S nanopowders. SEM images shows that all products consist of aggregate of fine nanospheres with uniform distribution and the size of the particles formed are in nanometer range. XRD results revealed that the obtained powders contains a mixture of copper sulfide phases specially the intermediate phases and the rough estimate of the average crystallite size using the Scherrer formula gives a range of values (4.1-36.9) nm.
Highlights
The development of nanostructured materials in the form of thin films has appropriate place in the research of solid state technology, it has high surface area to volume ratio it have different structural, optical, electrical, magnetic and dielectric properties than bulk [1]
Iraqi Journal of Physics, 2018 chalcogenides, like selenides, sulfides, and telluride are being studied widely due to their quantum confinement effects that associated to their small crystalline size [2, 3], which give them a large potential applications in the light emitting diodes, solar cells, fuel cell, drug delivery, catalysts for industrial transformation, gas and photo-sensing mechanism [2, 4]
Cu2-xS nanocrystalline powders were obtained by chemical precipitation from their aqueous solutions composed of different molar ratios of Cu, using copper sulfate pent hydrate (CuSO4.5H2O), thiorea ((NH2)2CS) as source of Cu+2, S-2 ions respectively, with disodium ethylenediamine tetraacetate (Na2EDTA.2H2O)
Summary
The development of nanostructured materials in the form of thin films has appropriate place in the research of solid state technology, it has high surface area to volume ratio it have different structural, optical, electrical, magnetic and dielectric properties than bulk [1]. The present paper deals with the synthesis Cu2-xS nanocrystalline powders with different molar ratio of Cu/S, and study the compositional, structural, and morphological properties of these powders.
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