Silver nano solution: manufacturing methods, characteristics and applicability

Abstract

The development of human society is associated with the development of materials through the ages of stone, copper, iron, polymers and now nano materials. With extremely small sizes, very large surface areas and quantum effects of nanomaterials, nano materials offer many outstanding properties and opens up many special applications. Silver nanoparticles (AgNPs) have both the properties of metallic silver while expanding and adding new properties, so the application scope is also more developed, especially in the fields of environment, medicine and human health protection. Silver nano is prepared according to the principle of "top-down" from metal or "bottom-up" from ion by physical, chemical, physicochemical or biological techniques or a mixture of combinations. The obtained silver nano product is a true colloidal solution whose properties are very dependent on the preparation methods, but the basic properties are the nature of the plasmonic surface resonance of silver nanoparticles by UV-Vis, particle shape, size and structure by TEM, SEM, AFM, FTIR, XPS, XRD, nanoparticle and colloidal size distribution by Laser Scattering Particle Size Distribution Analyzer and Zeta Phoremeter Instrumentation. The concentration of nano silver is usually determined by methods such as AAS, ICP-MS, ICP-OES. Depending on the intended use in the fields of catalysis, photovoltaic, microelectronics, environment, medicine, health, etc., methods to determine the corresponding properties are also applied. AgNPs has many special characteristics, the most prominent of which is in the field of killing many bacteria and viruses to protect the environment and human health, so the AgNPs development research strategy is specially noticed in many countries in the worlds.