Copper oxide nanoparticles: Synthesis, characterization, optical property and its application for the removal of methyl green dye

In this paper, nanoparticles of copper oxide (CuO) were synthesized using solidstate thermal decomposition of the new copper precursor at 600 ºC for 3 h. The copper precursor was prepared from the mixture of CuCl2.6H2O and benzoic acid in H2O in the presence of KOH. Nanoparticles of copper oxide were characterized by Fourier transform infer-red (FT-IR), UV-Vis and photoluminescence (PL) spectroscopy X-ray powder diffraction (XRD) and transmission electron microscopy (TEM). All results confirmed the preparation of pure phase of CuO nanoparticles. In addition, adsorption of methyl green in aqueous solution of copper oxide nanoparticles as adsorbent was studied at various parameters such as adsorbent dosage and agitation time. It was found that methyl green dye removal increased by adsorbent dosage (0-30 mg) and contact time (0-120 min). This research revealed that the copper oxide nanoparticles could be used as a suitable adsorbent for removal of various organic dyes from aqueous solutions.