Improved Biosynthesis and Characterization of Silver Nanoparticles Using Laggera crispata (Vahl) Hepper and J.R.l Wood Leaves Extract

Abstract

Biosynthesis of nanoparticles is attractive to researchers because some of the biologically active ingredients in the plants help in green synthesis. In this study, we have developed a single-step, cost-effective, and eco-friendly method for the synthesis of Silver nanoparticles (AgNPs) using the aqueous plant leaves extract of Laggera crispata (Vahl) Hpper and J.R.l Wood. AgNPs were biosynthesized using Laggera crispata (Vahl) Hpper and J.R.l Wood leaves extract as reducing, capping, and stabilizing agent. The AgNPs began to form just after the addition of aqueous extract of Laggera plant to the aqueous solution of Silver nitrate (AgNO3) at room temperature. The biosynthesized AgNPs were characterized by different techniques, such as Fourier Transform Infrared (FTIR) spectroscopy, X-ray Diffraction (XRD), and UV Visible Spectroscopy. The absorption spectra obtained from UV-Visible spectroscopy showed a sharp Surface Plasmon Resonance (SPR) peak at 451 nm which confirmed the formation of AgNPs. The average particle size of AgNPs was 53 nm as determined by X-ray Diffraction measurement. The FTIR study showed characteristic peaks corresponding to the functional groups that act as capping and stabilizing agent to AgNPs.