Biomediated AgNPS from Some Ethnobotanical Weeds—Pyllanthus amarus

ABSTRACT Biomolecules found in plants such as enzymes/proteins, amino acids, polysaccharides, and vitamins induce formation of nanoparticles. In this study, plant broth of Phyllanthus amarus containing a number of secondary metabolites was selected for the formation of silver nanoparticles (AgNPs) at room temperature. The UV-visible spectrum of the aqueous medium containing silver ions demonstrated a peak at 425,356 nm corresponding to the plasmon absorbance of silver nanoparticles. High-resolution transmission electron microscopy (HRTEM) showed the formation of well-dispersed silver nanoparticles in the range of 10–20 nm. The X-ray diffraction (XRD) spectrum of the AgNPS exhibited 2θ values corresponding to the silver nanocrystal.