Abstract

Copper(II) oxide (CuO) nanoparticles (NPs) were synthesized by the calcination of a mixture of copper acetate and orange peel powder at 600 °C for 4 h. The average crystallite size and structure of the prepared sample was predicted by X-ray diffraction (XRD) analysis. Optical property of the sample was measured by using UV-visible absorption spectroscopy. Fourier transform infrared (FT-IR) spectroscopy was employed to find metal-oxygen bond and surface groups of the sample. Both scanning and transmission electron microscopic analyses reveal that the CuO particles adopt leaf and irregular plate-like morphologies. The average length of CuO nanoleaves is 54 nm. The effect of morphology by different types of orange peel powders was also investigated. Energy dispersive X-ray spectrum (EDX) shows the characteristic peaks of Cu, C and O only. Furthermore, the prepared CuO NPs with or without orange peel powders were applied on H9c2 cardiomyoblasts cells to find their cytotoxicity. Research Highlights Orange peel extract is used to produce Copper (II) oxide nanoparticles. Solvent free synthesis of CuO nanoparticles. Highly stable CuO nanoparticles are produced by this method. Synthesized CuO nanoparticles show leaves-like morphology.