Abstract
New antimicrobial silver nanoparticles (Ag NPs) can be synthesized using recycled X-ray and photographic films by green, simple, easy, cost effective and environment-friendly chemical method. It is based on stripping both Ag+ ions and gelatin layer of recycled films followed by reducing silver ions in an aqueous media in the absence and presence of glucose and poly(vinylpyrrolidone), PVP, as reducing and stabilizing agents. In this study, gelatin acts as a reducing and stabilizing agent for the first time. The optimum conditions such as stripping time, temperature, gelatin and PVP concentrations, crystalline structure, particle distribution and size of Ag NPs was investigated. Ultraviolet - visible spectra was used to study the chemical stability of Ag NPs in 1M HCl to be applied as a thin antimicrobial layer to protect the steel surface from corrosion.