Synthesis of Zinc Oxide Nanoparticle as Corrosion Resistance of Steel Metal

Abstract

Corrosion resistance is a material applied as iron or steel coating metal to avoid corrosion or rust. The addition of ZnO nanoparticles (ZnO-NP) in paint is functions as a protective coating of the steel metal from corrosion. The ZnO-NP was prepared by the reaction of Zn(CH3COO)2.2H2O with cetyltrimethylammonium bromide surfactant and NaOH. The paint composition as a coating material was ZnO-NP powder, epoxy, thinner, pigment, and solvent. XRD characterized ZnO-NP powder, and the performance of ZnO-NP coatings on corrosion was evaluated by linear sweep polarization. The first layer scheme produces the lowest corrosion current. The size of the ZnO-NP obtained was 23.29 nm. A thermodynamic study of corrosion of ZnO-NP had Gibbs energy at transition state (ΔG*) of 74.13 kJ mol-1 at 303 K. The kinetics study demonstrated that the activation energy (Ea) of ZnO-NP was higher than the blank. Based on these studies, ZnO-NP is shown to be potential material corrosion resistance of steel metal.