GREEN TECHNOLOGY TO SYNTHESIS AND CHARACTERIZATION OF ZERO VALENT IRON NANOPARTICLES FROM EXTRACT OF CLITORIA TERNATEAR. SELVARAJ, S. YOGESH AND K. HARIHARANAbstract Nanoparticles are solid colloidal particles ranging from 1 to 100 nm in size, they consist of macromolecular materials in which the active ingredients is dissolved, entrapped, or encapsuled, or absorbed. For environmental remediation the recent studies indicate the potential of iron nanoparticles. Biological resources such as bacteria, algae, fungi and plants have been used for the production of low-cost, energy-efficient and nontoxic environmentally friendly products. Nano scaled irons were synthesized from the plant Clitoria ternatea extract of under environmental condition at room temperature by using 0.01M FeCl3 (ferric chloride) at 30 oC in 30 min. The zero valent iron nanoparticles are synthesized in oxidation state. Box Behnken design optimization tool was used to predict the nanoparticles yield with three variables. The reductants present in the plant extracts act as reducing and stabilizing agent. A systematic characterization of nano scaled iron particles was performed using UV-Vis, pH, FT-IR and SEM studies. The diameter of iron nanoparticles was found within the range 50-100 nm. In the green nanotechnology the valuable approach of synthesis of nanoparticles by the exploitation of different biomaterials. This study focuses on various studies outlining the novel routes for biosynthesis of these nanoparticles by plant resources along with outlining the future scope of work in this area |