Volume III Issue II April-June 2023

Name of Author : R Sudha Periathai, S Abarna, M Rajakumari

Title of the paper : A comparative study on the Structural, Electrical, Dielectric and Optical Characterization of Co3O4 and Cu-Doped Co3O4 Nanoparticles synthesized by co-precipitation method

Abstract: Co- Precipitation method is one of the best and simple method for preparing nanoparticles. In the present work, Cobalt Oxide Co3O4 and Copper Cu doped triton capped Co3O4 nanoparticles were synthesized by chemical Co-precipitation method. The synthesized samples were characterized using XRD, AC impedance spectroscopy and UV-Vis spectroscopy studies. Cu doped Co3O4 is capped with surfactant triton x-100 in order to maintain the particle size and restrict the agglomeration. The crystallite sizes are found to be 27 nm and 25 nm respectively for bare and Cu doped Co3O4 nanoparticles. The conductance spectra confirms that the Cu doped Co3O4 possess highest electrical conductivity in the order of 10-5 S cm-1 at ambient temperature than the pristine one. The dielectric properties of the prepared nanomaterials are studied through Dielectric loss and modulus analysis. The optical band gaps are calculated for the prepared samples and it is found to be higher than the bulk Co3O4. Since the Cu doped Co3O4 nanomaterial shows higher ambient conductivity, it is suggested that the material can be used as an efficient electrode material in super capacitor applications.

Keywords : Cobalt Oxide nanoparticles, Copper doped, Triton, XRD, Conductivity, Band gap

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Page No. : 1-6