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GREEN SYNTHESIS, CHARACTERIZATION AND APPLICATIONS OF SILVER NANOPARTICLES OF PADINA TETRASTROMATICA HAUCK.
A. Kingslin and P. Ravikumar*
ABSTRACT
Green synthesis of noble metal nanoparticles (NPs) is a developing area of current nanotechnology research. In this paper we report the green synthesis of silver nanoparticles (AgNPs) using the aqueous extract of brown seaweed Padina tetrastromatica as reducing agent and stabilizing agent. The reduction of silver ions occurred when silver nitrate solution was treated with aqueous extract of seaweed at40c. The AgNPs obtained were characterized by UV-Visible Spectroscopy, FESEM, EDAX, XRD and FTIR techniques. The formation of AgNPs is confirmed by the appearance signatory dark brown colour of the solution and a characteristic peak at 422 nm in the UV-Vis spectrum. The AgNP lattice is unaffected by other molecules in the algal extract as revealed in the XRD pattern. FESEM images revealed that the Keywords: Green synthesis, Silver nanoparticles, Padina tetrastromatica, Characterization, Seed germination, Embryonic axis length, Lampito mauritii, Antioxidant activity. [Download Article] [Download Certifiate] |