Silver nano solution: manufacturing methods, characteristics and applicability
Abstract
The development of human society is associated with the development of materials through the ages: stone, copper, iron, polymers and now nanomaterials. With extremely small sizes, very large surface areas and quantum effects of nanomaterials, it offers many outstanding properties and opens up many special applications.Silver nanomaterials (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 health protection for humans. Nanosilver is also 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 nanosilver product is a true colloidal solution whose properties are very dependent on the preparation methods, but the basic properties are such as 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 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. Because AgNPS has many special characteristics, the most prominent is the field of killing many bacteria and viruses to protect the environment and human health, the AgNPS development research strategy is specially noticed in many countries in the worlds. Research is very focused on precise control of concentration, particle size, purity, use of environmentally friendly materials and lower costs as well as increasing efficiency and safety in biological water treatment applications. activity, diagnosis and treatment in medicine.