Dielectric properties of copper oxide nanoparticles using AnnonaMuricata leaf

摘要

Present investigation aims the synthesis, characterizationand dielectric properties of Copper Oxide (CuO) nanoparticles using AnonnaMuricata leaf by means of safe, non-toxic, and eco-friendly green method. The biosynthesized nanoparticles of copper oxide are characterized through XRD, FT-IR, SEM, and UV-Vis spectra. Structure and crystallite size of the product were identified by X-Ray Diffraction analysis (XRD). XRD analysis reveals that prepared nanopowder has crystalline nature with monoclinic structure in the space group of c2/c having crystallite size of 21nm. Peak at 525cm~(-1) in Fourier Transform Infrared Spectra (FTIR) corresponds to Cu-O stretching which confirm the formation of CuO nanoparticles. UV-Visible spectrum shows a characteristic absorption peak of CuO nanoparticles at wavelength of 355nm. Dielectric measurements have been carried out using sintered pellet in the frequency range 1Hz-10MHz at room temperature. The obtained values of dielectric constant (ε') and loss factor (tan δ) were 41 and 0.0014 respectively at 1MHz. A.C conductivity (σ_(a.c)) performance shows electrical conductivity increases with increase in temperature, it make applications for electronic devices.