In this research we are synthesized CuO nanoparticles (NPs) using water extract of. Also the total phenolic content of Sambucusnigra L. leaves water extract was measured by the Folin-Ciocalteu method. For confirmation the structure of synthesized bio-CuO-NPs we are employed X-ray Diffraction (XRD), Ultraviolet-visible (UV–vis), Fourier Transform Infrared (FTIR) spectroscopies, Scanning Electron Microscopy (SEM), and […]