Green synthesis, characterization of silver sulfide nanoparticles and antibacterial activity evaluation

This research work presents a facile and green route for synthesis silver sulfide (Ag₂SNPs) nanoparticles from silver nitrate (AgNO₃) and sodium sulfide nonahydrate (Na₂S.9H₂O) in the presence of rosemary leaves aqueous extract at ambient temperature (27 ^oC). Structural and morphological properties of Ag₂SNPs nanoparticles were analyzed by X-ray diffraction (XRD) and transmission electron microscopy (TEM).  The surface Plasmon resonance for Ag₂SNPs was obtained around 355 nm. Ag₂SNPs was spherical in shape with an effective diameter size of 14 nm. Our novel approach represents a promising and effective method to large scale synthesis of eco-friendly antibacterial activity silver sulfide nanoparticles.