Green Synthesis of Gold Nanoparticles using Colchicum autumnaleand its characterization.

Recent interest in the development of new and novel strategies for the generation of gold nanoparticles stems from their potential applications in diversified fields.Biosynthesis of nanoparticles is now established as an emerging area of nanoscience research. A bottom-up ?green? and rapid synthetic route using Colchicum autumnale leaf broth as reducing and stabilizing agent produced gold nanoparticles at ambient conditions. The nanoparticles were characterized by UV?vis spectrophotometer, FTIR, Field Emission Scanning Electron Microscope, X-ray diffraction and DLS. FTIR spectra indicates that the reduction of Au3+ to Au0 was mediated by alkaloids present in the plant leaf broth. The size of synthesized nanoparticles are in the range of 70-120nm, which has been confirmed by DLS and FE-SEM.The size of nanoparticles decreases with increase in broth concentration. The morphology was irregular spherical to polygonal and crystallized in face centered cubic symmetry.