Biosynthesis of Gold Nanoparticles Using Aqueous Extract of Stem of Periploca Aphylla Plant

Abstract

This present work reports an ecofriendly approach for the synthesis of gold nanoparticles (Au NPs) using aqueous stem extract of Periploca aphylla as a reducing and stabilizing agent, has been discussed. This approach is simple, cost-effective and stable for a long time, reproducible at room temperature and in an eco-friendly manner to obtain a self-assembly of Au NPs. Two parameters were optimised for the fabrication of gold nanoparticles including the pH and contact time. The resulting nanoparticles are characterized using UV–vis, TEM, XRD and FT-IR spectroscopic techniques. UV–visible spectra of the aqueous medium containing gold nanoparticles showed a surface plasmon resonance peak at 535 nm. Uniform spherical shapes were observed for biosynthesized Au NPs within range of 25–30 nm by transmission electron microscopy. XRD results confirmed the presence of gold nanoparticles with face centered cubic structure. FT-IR analysis was performed to analyze the biomolecules responsible for the reduction of Au NPs.