Abstract

Green biosynthesis of silver and gold nanoparticles is an emerging field with its potential applications in the pharmaceutical field. Preparation of more stable silver, gold, and their nanoparticles is achieved by using Heterocyclic compounds present in Gmelina arborea leaf extracts. Gmelina arborea is a medicinal plant that contains heterocyclic compounds like alkaloids, flavonoids, and polyphenols with a wide range of pharmaceutical applications, and in this study, it acts as a reducing and bio-capping agent. The advanced techniques, like SEM, TEM, XRD, and FTIR, are used to establish the formation of nanoparticles by using plant extract. The synthesised nanoparticles have a size of 20-50 nm and an fcc structure, which is confirmed by TEM analysis. FTIR and TGA study reveals that plant heterocyclic materials are bio-capped on the nanoparticles and hence become stable nanometal and alloy materials.