Abstract
Objective: In the present study, cupric sulfide (CuS) nanoparticles (NPs) were synthesized in deionized (DIW) water using an eco-benign, simple, and cost-effective chemical route that requires no surfactant or template.
Methods: Polypyrrole/cupric sulfide (PPy/CuS) hybrid nanocomposite (HNC) was synthesized using an in-situ chemical oxidative polymerization method in the presence of obtained CuS NPs. The X-ray diffraction (XRD) analysis confirmed the hexagonal structure of CuS, whose crystalline nature was preserved in the HNC. For CuS NPs and PPy/CuS HNC, elastic properties, such as intrinsic microstrain, internal stress, dislocation density, strain energy density, stacking faults, and intercrystalline separation, were used to analyze the crystal imperfections and distortions.
Results: Field emission scanning electron spectroscopy (FESEM) micrographs revealed that CuS NPs and PPy/CuS HNC have particulate and globular morphology, respectively. The values of the average intrinsic strain, dislocation density, internal stresses, and strain energy density of PPy/CuS HNC were estimated to be ~2 × 10-3, ~8.8166 × 1015 m-2, 164.263 MPa, and 127.278 KJ m−3, respectively, which were observed to be higher than those of CuS NPs.
Conclusion: The DC electrical conductivity of as-synthesized samples was measured at room temperature in pelletized form, using the standard four-probe method, and conductivity values were estimated to be ~480 Scm-1 and ~4 Scm-1 for CuS NPs and PPy/CuS HNC, respectively.
Keywords: CuS, polypyrrole, XRD, FESEM, elastic properties, electrical properties, microstrain, morphology.
Graphical Abstract
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