PRODUCTION AND CHARACTERIZATION OF SILVER NANOPARTICLES (Agnps) BY BIOLOGICAL (GREEN SYNTHESIS) METHOD FROM NEEM TREE LEAVES (Azadirachta Indica) FROM MULAI WARD, JERE L.G.A BORNO STATE NIGERIA.

Abstract

Nanotechnology is an advanced discipline of science and technology for dealing with material sizes on the nanoscale. Nanoparticles, which have a dimension of less than 100 nm are among those materials. In this study, five different neem tree leaf (Azadirachta indica) were collected from Mulai ward, Maiduguri Borno state and used for the synthesis of silver nanoparticles synthesis for five different mM concentration (1 mM – 5 mM). Morphological and chemical characteristics of the highest yield synthesized AgNPs. The synthesized nanoparticles were characterized using, UV spectrum analysis, and Fourier transform infrared spectroscopy (FT-IR) analysis were done. Color change from yellow to brown, and 400 nm surface plasmon resonance (SPR) peak after were obtained. FT-IR showed 12 peaks with some functional groups contributing to the synthesis of Ag nanoparticle. XRD was done to determine the crystalline nature of AgNPs and the resulted peaks were found at (2?) 15. 5o ,23.2o, 26.4o. Other peaks at 2? values in AgNPs pattern can be ascribed to the residues of the organic content of the plant extract. It was determined that AgNps have elemental (Ag ) and spherical crystalline structure. The mean crystal size was calculated at prominent peak (15.5o ) using the Debye-Scherrer equation