By maintaining other parameters constant, such as current (100mA), electrolyte (sodium hydroxide), time (2 hrs), and solvent (pure water, water-methanol, or water-acetonitrile), an easy, straightforward electrochemical method to fabricate morphologically different copper oxide nanoparticles (CuO NPs) has been developed. An undivided cell with a sacrificed copper anode and an inert platinum cathode was used to conduct the electrolysis, which was done at ambient temperature and under amperostatic conditions. Systematic FTIR, XRD, SEM, and TEM characterization of CuO NPs isolated after electrolysis and calcinations at 900°C has been completed.