Abstract
Copper oxide nanoparticles (CuO NPs) were synthesized by a simple green method using Camellia sinensis (Tea) extract as a reducing agent. The CuO NPs were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Field emission scanning electron microscope (FESEM) with energy dispersive X-ray spectroscopy (EDX), High resolution transmission electron microscope (HRTEM) and Selected area electron diffraction (SAED) techniques. The crystallite size estimated by Scherrer method was 35nm. The maximum absorbance of the CuO NPs was observed at 264 nm. The average particle size from HR-TEM was found to be 40-45nm. In this work we demonstrate the degradation of Malachite Green (MG) in aqueous solutions under sonocatalytic treatment. The dissimilarity of dye absorbance under UV-Vis spectrophotometer was used to calculate the degradation efficiency of CuO NPs. Moreover the kinetic process from the degradation result shows the MG dye follows the pseudo-first order kinetics.
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