Silver Nanoparticles – A Review

Abstract

Demand of silver nanoparticle (AgNPs) is increasing rapidly in many of the streams like in medical, pharmaceuticalcompanies, healthcare, food, consumer, cosmetics etc. Due to its uses it has been used for its several applications likeantibacterial properties, household, medical devices, and food industry, wound dressing, in diagnostic, orthopaedicsand an anticancer agent. These nano-sized particles are found to be in unique in nature and are also able to changetheir `physical, chemical and biological property that’s why they can be exploited in for various purposes. Methodsfor preparation for preparation of AgNPs are physical, chemical and biological. . Out of all three methods biologicalmethod is found to be simple, environmental, commercial and single step method and doesn’t need elevated tem perature, pressure, force and deadly chemicals. Before application of nanoparticles in any of the purpose like medicine,human welfare, or in healthcare industry, it is very important to characterize the prepared nanoparticles so as to checkthe safety issue of any of the prepared nanoparticle. Analytical techniques that are used for the analysis of this AgNPsare UV-Vis spectroscopy, XRD, FTIR, DLS, XPS, SEM, TEM, AFM etc. AgNPs have applications like anticancer, antifungal,anti-bacterial, anti-cancer etc.