Morphology control of colloidal silver bio-nanoparticles leaves shape using Sesbania sesban

Sesbania sesban extract solution (SSL) was used as a reducing and stabilizing agent for the synthesis of colloidal silver nanoparticles (AgNPs). The effect of time on the formation of nanoparticles was investigated using ultraviolet–visible spectroscopy. The AgNPs were synthesized after 25 min and characterized by high-resolution transmission electron microscopy, scanning electron microscopy (SEM) and X-ray diffraction (XRD). The average sizes of nanoparticles were estimated to be between 10 and 30 nm. The XRD of AgNPs, after 4 months, showed the stability of nanoparticles in air. The effects of silver nitrate concentrations and SSL concentrations on the morphology and size of synthesized AgNPs were observed by SEM.