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Green Synthesis, Characterization and Antimicrobial Activity of Vanadium Nanoparticles using Leaf Extract of Moringa oleifera

Aliyu AO, Garba S and Bognet O

In this study, Vanadium nanoparticles (VNps) were synthesized using Moringa oleifera leaf extract as both reducing and stabilizing agent using green method of synthesis and characterized using Ultraviolet (UV) spectrophotometer, pH, Conductivity, Fourier Transform Infrared (FT-IR) spectroscopy, Scanning Electron Microscopy (SEM). The Antimicrobial activity of the synthesized nanoparticle was tested against Bacteria and fungi. The determination of pH at different time interval shows a gradual decrease as a function of time and stabilizes from 14-24th hour this confirm the stability of the nanoparticles synthesized. The FTIR spectrum reveal the functional groups responsible for the reduction and synthesis of the nanoparticles, this is obvious from the two spectra of biomass and Vanadium that the flavones and phenolic led to the bio-reduction. The SEM Analysis reveals disperse particles that are spherical in shape and a diameter of 100 nm which is due to the different capping agent that adsorb to the surface of the metal. The antimicrobial activity showed a minimal inhibitory effect on bacteria with zone of inhibition (ZOI) of 16 mm for Escherichia coli and 18 mm for Salmonella typhi, but no ZOI on fungi. It can be concluded that Vanadium nanoparticles synthesized using Moringa oleifera can be applied in medicine, as a curative agent.