GREEN SYNTHESIS OF SILVER NANOPARTICLES USING LILAC

Abstract

Silver nanoparticles obtained by green synthesis using various parts of   plants have strong potential for application in medicine and industry. A promising but little-studied direction is the use of lilac (Syringa vulgaris) in the synthesis of silver nanoparticles. The article is devoted to the development of a method for obtaining silver nanoparticles by green synthesis using various parts of lilac (flowers, leaves, bark) and the study of the properties of the resulting product. As a result of the study, it was found that the phytoreagents of common lilac perform a dual role in the synthesis of nanoparticles, namely, a reducer of Ag+ ions and a stabilizer of the formed nanoparticles. The presence of nanoparticles in the solution was confirmed by the Tyndall cone and spectrophotometrically by the presence of an absorption maximum of about 400 nm, which is characteristic of nanosized silver. It was shown that the best reducing agent in the synthesis of silver nanoparticles is the flowers of common lilac, compared to its leaves and bark. By the method of X-ray diffraction, it was established that the obtained silver nanoparticles have a face-centered crystal lattice with particle sizes from 18 nm to 48 nm, depending on the extract used.