Silver Nanoparticles - A Review

Demand of silver nanoparticle (AgNPs) is increasing rapidly in many of the streams like in medical, pharmaceutical companies, healthcare, food, consumer, cosmetics etc. Due to its uses it has been used for its several applications like antibacterial properties, household, medical devices, and food industry, wound dressing, in diagnostic, orthopaedics and an anticancer agent. These nano-sized particles are found to be in unique in nature and are also able to change their `physical, chemical and biological property that's why they can be exploited in for various purposes. Methods for preparation for preparation of AgNPs are physical, chemical and biological.. Out of all three methods biological method is found to be simple, environmental, commercial and single step method and doesn't need elevated temperature, 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 check the safety issue of any of the prepared nanoparticle. Analytical techniques that are used for the analysis of this AgNPs are UV-Vis spectroscopy, XRD, FTIR, DLS, XPS, SEM, TEM, AFM etc. AgNPs have applications like anticancer, antifungal, anti-bacterial, anti-cancer etc.