PLANT EXTRACT MEDIATED GREEN SYNTHESIS OF NANOPARTICLES: A BRIEF REVIEW

Abstract

Nanoparticles (NPs) are particles with size lesser than 100nm, having a characteristic of high surface to volume ratio which provide unique surface interaction properties to these particles. The routine synthesis of such smaller particles requires harsh physical or chemical treatments to the bulk materials, which utilises either a high energy source (laser, UV, sputtering, electro-explosion etc.) or costly and hazardous chemicals (oxidizing or reducing agents). On the other hand, Green Synthesis provides a path via which nanoparticles may be obtained in an eco-friendly manner at a comparatively lower cost. Green synthesis describes the use of biogenic ways or application of greener regents (eg.Plant extracts, green solvents) for the purpose of reduction, oxidation or capping of nanoparticles which is particularly a crucial step for the nanoparticle synthesis, regulating the shape and size of NPs. In the current article, brief analyses of some green synthesis techniques using various plant parts have been reviewed to establish the concept for the eco-friendly and green methodologies for the nanoparticle synthesis.