In the present work,the synthesized Ag NPs by using the leaf extract of Croton sparsiflorus morong Ag NPs were characterized by using UV–Visible (UV–Vis) absorption spectroscopy, X-ray diffraction (XRD), Field Emission Scanning Electron Microscopy (FE-SEM) along with Energy Dispersive X-ray (EDX) Spectroscopy and Fourier Infrared (FT-IR) Spectroscopy, respectively.