Green synthesis of silver nanoparticles using Cymbopogon citratus

The aim of this study was green synthesis of silver nanoparticles using leaf extract of Cymbopogon citratus. Silver nanoparticles (AgNPs), having a surface plasmon resonance (SPR) band centered at 406 nm, were synthesized by Cymbopogon citratus leaf extract capping as well as reducing agent with AgNO3 during a time dependent process at room temperature. A synthesized silver nanoparticle was characterized for their size and shape using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The total formation of the AgNPs was observed visually with a color change from pale yellow to brownish-black. Fourier transform infrared spectroscopy (FTIR) and energy dispersive x-ray spectroscopy (EDS/EDX) were conducted to determine the various functional groups and the concentration of metal ions in the nanoparticles. The data analysis showed spherically shaped nanoparticles with a size of 25-30 nm in diameter, as revealed by TEM, thereby complementing the result for SEM.

Autorentext

Gaurav Pal arbeitet als Doktorand am Motilal Nehru National Institute of Allahabad (MNNIT) im Bereich der Schwermetallforschung. Er hat seinen Master in Pflanzenbiotechnologie abgeschlossen und seine Dissertation im Bereich Nanotechnologie an der Rajiv Gandhi South Campus, Banaras Hindu University, Varanasi geschrieben.