Green Synthesis of Metal NANO PARTICLES and their Applications in ENVIRONMENTAL REMEDIATION

Abstract

The thesis is entitled Green Synthesis of Metal Nano Particles and their applications in Environmental Remediation . Nanotechnology is profoundly and popularly being used term in these days to label the variety of research activities around the world and it has marked its importance as a revolutionizing tool. During recent decades metallic nanoparticles have been found very interesting due to their unique characteristics which make them suitable for different applications. In recent years, the development of competent green chemistry methods for synthesis of metal nanoparticles have become a main limelight of researchers in the field of nanotechnology. The utilization of secondary metabolites from plant leaf broth has emerged as a novel technology for the synthesis of various nanoparticles. Water pollution due to discharge of textile effluents from textile dyeing mills are one of the major environmental problems, in the world today. Colour effluents released into the aquatic ecosystem poses aesthetic problem and serious ecological problems. Nanoparticles of noble metals like gold and silver and Palladium gained much attention because of their inertness and extraordinary electronic, chemical, and optical properties.The present study includes brief discussion about metal nanoparticles, properties of nanoparticles, nanocatalysis and different synthesis method of nanoparticles. The review also gives a concise discussion of degradation method of dyes and applications of metal nanoparticles in different environmental remediation process. The experimental section gives depiction of several instruments, characterization, analytical techniques and also describing the details of the reagents, chemicals, their solutions with other specifications in the kinetic study of the degradation of dyes. Among various metal NPs, gold nanoparticles (AuNPs) has drawn attention over the past few years owing to their optical and physico-chemical properties. In this work, AuNPs were synthesized using Phyla nodiflora (L.) leaf extract by m