A new developed method is described to prepare monodisperse silver nanoparticles to enhance yield by adding a trace amount of Fe3+ ions into the reaction of AgNO3 with oleic acid and oleylamine to produce monodsiperse nanoparticles. The core-shell silver nanoparticle coated with copolymers of styrene acrylamide nanogels with controllable particle size produced via emulsion polymerization at room temperature. The crosslinking polymerization was carried out in the presence of N,N`-methylenebisacrylamide (MBA) as a crosslinker, N,N,N`,N`-tetramethylethylenediamine (TEMED) and potassium peroxydisulfate (KPS) as redox initiator system. The structure and morphology of the silver nanogels were characterized by Fourier transform infrared spectroscopy (FTIR), transmission and scanning electron microscopy (TEM and SEM). The effectiveness of the synthesized compounds as corrosion inhibitors for carbon steel in 1 M HCl was investigated by various electrochemical techniques such as potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). Monolayers of silver nanoparticles and oleic oleyl amine were self-assembled on the fresh active surface of the carbon steel electrode. The self-assembled monolayers of Ag nanoparticles have more effective corrosion inhibition for carbon steel as indicated by the high charge-transfer resistance shown in cyclic voltammetry (CV) and EIS. The results showed the nanogel particles act as mixed inhibitors. Adsorption of nanogel particles was found to fit the Langmuir isotherm and was chemisorption.Email: hlohedan@ksu.edu.saDivision of colloid and surface chemistry, fundamental research in colloids, surfaces and nanomaterial (poster).

Synthesis and application of modified silver nanoparticles with high yield as anticorrosion self-assembled nanoparticles films on the surface of carbon steel alloys

247th National Meeting (2014)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.