Ahmed A. Farag, W. Ahmed, Khaled Zakaria, Ibrahim M. Nassar
Abstract: Nanocomposite material based on Iron nanoparticles colloidal (FeNPC) and Purine were used through this work. (FeNPC) was biosynthesized and characterized by dynamic light scattering (DLS) and UV-visible spectroscopy. FeNPC was evaluated as synergistic inhibition with two purine inhibitors namely 1H-pyrazolo[3, 4-d]pyrimidin-4 (2H) -one (PU1) and 6-[ (1-methyl-4-nitro-5-imidazolyl) sulfanyl] purine (PU2) on the corrosion of carbon steel in 0.5 mol dm-3 H2SO4 solution by electrochemical techniques. The potentidynamic polarization curves indicated that PU1 and PU2 behave as a mixed-type inhibitor while in the presence of FeNPC and its mixture with PU1 and PU2 behave as a cathodic inhibitor. There is a synergism between purine inhibitors and the biosynthesis FeNPC, and the values of synergism parameter (S) are higher than unity.
Keywords: Metals, Nanostructures, Organic compounds, Electrochemical techniques, and Corrosion