Abstract

SILVER NANOPARTICLES, SYNTHESIS, PROPERTIES AND APPLICATIONS – AN OVERVIEW

M. Sangeetha*, C. Rubina Reichal, A. Subhasri, P. Lakshmi, K. Sankari, S. Mohammed Ashif and A. S. Jihas

ABSTRACT

In recent years nanoparticals of noble metals such as gold, Silver and palladium have drawn immense attention due to the wide range of new applications in various industry. Widely silver nanoparticles (AgNPs) have gained significant interest due to unique optical, antimicrobial, electrical, physical properties and their possible applications. The change of energy level from continuous band to discrete band AgNPs with decrease in size of particles gives strong size dependent chemical and physical properties. AgNPs show lower toxicity to human health while AgNPs show higher toxicity to various micro-organisms. Silver nanoparticals have been investigated because they exhibit unusual optical, Electronic and chemical properties, Depending on their size and shape, thus opening many possibilities with respect to technological applications. silver nanoparticals are the metal of choice as they hold the promise to kill microbes effectively and effect on both extracellularly as well as intracellularly. Green synthesis of silver nano particles is non- toxic, eco friendly and cost effective. In this review paper different synthesis process especially green synthesis, properties, application of silver nano particles and their recent advances are presented.

Keywords: Nanoparticles, Properties, Applications.