Author/Authors :
-، - نويسنده Nanoscience, PG & Research Department of Chemistry, V.O. Chidambaram College, Thoothukudi-628008, Tamil Nadu, India. Ponvel, K. M. , -، - نويسنده Nanoscience, PG & Research Department of Chemistry, V.O. Chidambaram College, Thoothukudi-628008, Tamil Nadu, India. Narayanaraja, T. , -، - نويسنده Nanoscience, PG & Research Department of Chemistry, V.O. Chidambaram College, Thoothukudi-628008, Tamil Nadu, India. Prabakaran, J.
Abstract :
A facile and green approach has been developed to synthesize silver nanoparticle (Ag-NPs). This was carried out by a biosynthetic route using Justicia Adhatoda root extract as reducing and stabilizing agent. The structure, composition, average particle size (~25 nm) and surface morphology of Ag-NPs were characterized by the X-ray diffraction, transmission electron microscope and atomic force microscope analyses. The possible functional groups in the plant extracts were identified by FT-IR analysis. Electrochemical property of the Ag-NPs was analysed by cyclic voltammetry that displayed an oxidation peak potential at Epa = 0.438 V. Mechanism of the formation of Ag-NPs was proposed which showed that the phenolic compounds of the root extract respond for the reduction of silver ions to silver nanoparticles. Ag-NPs exhibit good antioxidant and antibacterial activities. This biosynthetic approach could open a path for environmentally friendly, simple, cost effective, alternate for conventional synthesis. This prevented hazardous chemicals and was useful for applications in medicine and large scale production of metallic nanoparticles.
