GREEN SYNTHESIS OF ZINC OXIDE NANOPARTICLE BY MICROBES AND THEIR ROLE IN HEAVY METALS REMEDIATION

Abstract

Microbes and plant extracts can be used to create nanoparticles. Size and surface of nanoparticles can be easily changed under the right parameters to provide both passive and active medication delivery. By mounting ligands to the surface of the nanoparticle, it can be directed towards the targeted spots. The study of particles with at least one nanometer in dimension is known as nanotechnology. There are three ways to create nanoparticles: physically, chemically, and through green synthesis techniques. Plant extracts, enzymes, or microbes can all be used in green synthesis. Due to its non-toxic and environmentally beneficial procedure, the green synthesis method provides the basis for this project activity. In this experiment, E.coli and other Bacillus species are used to reduce Zinc (II) ion solution into ZnO nanoparticles. Zinc nanoparticles were characterised using a UV-visible spectrophotometer to determine their Surface Plasmon resonance, a SEM to determine their morphologies, and an XRD and FTIR to determine their crystallinity.