SYNTHESIS AND CHARACTERIZATION OF SILVER NANOPARTICLE FROM ERYTHRINA INDICA

Abstract

Silver nanoparticle (AgNPs) is synthesized using novel aqueous leaf extract of Erythrina indica as a reducing and stabilizing agent. This leaf contains bio molecules such as alkaloids, flavonoids, carbohydrates, amino acids and phenolic compounds. Formations of stable nanoparticles were observed after the addition of aqueous leaf extract into silver nitrate solution. The silver nanoparticles were characterized by UV-visible Spectroscopy (UV), Fourier Transform Infra-red Spectroscopy (FT-IR), Scanning Electron Microscope (SEM), Transmission electron microscope (TEM), Energy dispersive spectroscopy (EDX), Particle size analysis (DLS) and X-ray diffraction (XRD). A peak at 396 nm was obtained in UV-visible spectroscopy which is due to the surface plasmon resonance. XRD proves the crystalline nature of silver nanoparticle. Highly mono dispersed silver nanoparticles with the range of 70 to 90nm are revealed from SEM analysis. TEM analysis also shows the particles are in nano size.