Open Access

Characterization of MgO Cubic Nanocrystals Synthesized and Deposited on rGO Nanosheets

V. Shanmugam, nvsgacphy@gmail.com
Department of Physics, Government Arts College, Affiliated to Bharathidasan University, Karur, TN, India T. Seethalakshmi, Department of Physics, Government Arts College, Affiliated to Bharathidasan University, Karur, TN, India M. Vishnu Devan, Department of Chemistry, Government Arts College, Affiliated to Bharathidasan University, Karur, TN, India T. Deepa Department of Chemistry, Government Arts College, Affiliated to Bharathidasan University, Karur, TN, India

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Abstract

         The present study focuses on synthesizing rGO and MgO/rGO nanoparticles using Hummer’s and co-precipitation methods. Using X-ray diffraction (XRD), High-resolution transmission electron microscopy (HR-TEM), Energy dispersive X-ray analysis (EDAX), Fourier transform infrared spectroscopy (FTIR), Ultraviolet-visible spectroscopy (UV-Vis), Photo-luminescence spectroscopy (PL), and Cyclic voltammetry (CV), the synthesized rGO and MgO/rGO nanoparticles were characterized structurally, morphologically, and optically. The XRD data revealed the cubic structure of the nanoparticles. The dislocation density value was 0.3185×10¹⁵ and the Debye-Scherrer formula determined the crystallite size as 56.0316 nm. According to UV data, the absorption peak was located at a wavelength of 267 nm, and the band gap value was 4.6441 eV. The vibration frequency parameters of MgO at 548 cm^-1 were in good agreement with the published research. The elements in magnesium and oxygen were verified by Energy-dispersive X-ray analysis. The photoluminescence spectrum displayed green, blue, and violet emissions from rGO and MgO/rGO nanoparticles. For rGO and MgO/rGO nanoparticles, the specific capacitance values were determined to be 18 F/g and 51F/g, respectively.

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Reference

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