GREEN SYNTHESIS OF SILVER NANOPARTICLES FROM AQUEOUS STEM EXTRACT OF CERIOPS TAGAL

摘要： Biosynthesis of reliable and eco-friendly nanoparticles is an important branch of green nanotechnology. Ceriops tagal, a mangrove plant has various medicinal properties. Synthesis of C.tagal mediated nanoparticles may further enhance its medicinal potency. The aqueous stem extract of C.tagal was used as a bio-reducing agent for synthesis of silver nanoparticles Reduction of metal ions was confirmed by Ultraviolet-visible absorption spectroscopy, transmission electron microscopy, energy dispersive spectroscopy, and x-ray diffraction. Before and after bio-reduction changes in functional groups of plant extract was recorded by FTIR spectra. The kinetics of particle formation was dependent on time, temperature and metal salt concentration. UV-Visible spectroscopy demonstrated peak at 455 nm. TEM and XRD results revealed shapes, size and structure of synthesized nanoparticles. These results have indicated the formation of silver nanoparticles.