Catalytic Potential of Phyto-Synthesized Silver Nanoparticles for the Degradation of Pollutants
Dhruti Sundar Pattanayak, Dharm Pal, Chandrakant Thakur, Pranay Raut, K. L. Wasewar
Abstract
Green nanotechnology provides a wide area for research in the field of science and engineering. The development of an inexpensive and environmentally responsive preparation method for the production of nano-size materials, particularly metal nanoparticles is a promising area of research. In the recent past, the green synthesis of metal nanoparticles has attracted the researchers as it is a hazard free, less toxic, quick, and environmentally benign synthesis techniques. Among the metal nanoparticles silver nanoparticle (AgNPs) has especially fascinated the researchers owing to its dynamic properties. Researches have been carried out on the synthesis of AgNPs through biological, chemical, and physical methods. Among these, the biological method is one of the promising methods because it is benign to the natural environment. Bacteria, plant, fungus, etc., were used for biosynthesis of AgNPs. However, plant-based synthesis of AgNPs is the best biogenic procedure, due to some drawbacks associated with biosynthesis using bacteria. It is difficult to maintain the bacterial culture under specific environment and to avoid contamination before utilization. 466In the past decade, researchers have attempted the production of AgNPs by using different parts of several plants. Different biomolecules such as protein, amino acid, enzymes, cyclic peptides, flavonoids, polyphenols, and other substances available in plant as the natural reductants are mainly responsible for the synthesis of AgNPs. Phytosynthesized AgNPs has shown enhanced activity and favorable performance in biomedical, antimicrobial, diagnostics, and environmental applications. The effluent from various industries poses a serious threat to the receiving environment. The photocatalytic system had shown outstanding efficiency for the degradation of different kinds of pollutants from wastewater with economic feasibility. AgNPs can play a specific role in different catalytic reactions. This review provides a systematic and brief account on the eco-friendly, Phyto-assisted synthesis of AgNPs and its catalytic potential for degradation of various environmental pollutants.