To create copper oxide (CuO) nanostructures with size- and shape-controlled morphologies, a base-catalyzed sol-gel method is supplemented with a solvent-driven self-assembly procedure at low temperature. CuO nanostructures have been created using very nanoporous thin sheets. The simulated XRD pattern of CuO nanostructures is consistent with the actual XRD patterns, and it indicates that the nanocrystal unit cell structure is monoclinic. The production and characterisation of nanoparticles with prospective applications are assessed in this study. Sol-gel method was used to create nanoscale Cu oxide particles. Transmission electron microscopy (TEM), Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), thermogravimetric analysis (TGA), specific surface area (SSA), and total chemical analysis were used to characterize nanoparticles (NPs). All of the synthesized NPs were in oxide form, and they were all examined for size, shape, surface structure, crystallinity, and elemental ratios. The findings show that all of the produced NPs were in their respective oxide forms of CuO and varied in size from 20 to 50 nm.