Abstract
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•Facile CuONPs were green synthesized using Albizia amara leaf extract.•The phytoconstituents helps in the bioreduction of Cu2+ ions to form stabilized CuONPs.•Under solar irradiation, Albizia amara mediated synthesis of CuONPs is used as a catalyser for methyl red decolourization.
The present study was explored to synthesis copper oxide nanoparticles (CuONPs) by green route using the leaf extract of Albizia amara. By adding 0.5 mM copper sulphate solution to 1 ml of the leaf extract, the colour change from light brown to green was observed within 60sec.The surface plasmon bands were observed at 270 nm and the Fourier Transform- Infrared (FT-IR) spectra confirmed the presence of functional groups which provoked the synthesis of CuONPs. The characteristic diffraction peaks reveals the crystalline nature of CuONPs through X ray diffractometer (XRD). Field Scanning Electron Microscopy (FESEM) and Energy Dispersive X Ray (EDX) spectroscopy showcased the spherical nature and the presence of copper nanoparticles. The photocatalytic activity of methyl red under solar irradiation decolourised 93% of colour using CuONPs.