The use of laser ablation technique for the synthesis of titanium dioxide nanoparticles synergistic with sulfamethoxazole to prepare an anti-corrosion surface coating for mild steel and study of refraction and absorption

Titanium dioxide nanoparticles (TiO2 NPs) have been prepared by the laser ablation technique.The surface structure and morphology of TiO2 NPs was elucidated by ultraviolet-visible (UV-Vis) and Fourier transform infrared (FTIR) spectroscopies, scanning electron microscopy (SEM) and X-ray diffraction (XRD).The variable size and geometry of the nanoparticles depend on the medium used for the synthesis.Physically, titanium oxide NPs give the optimum refractive index of 1.655, 1.556 and 1.554 for the studied wavelengths (487.1, 587.3 and 600 nm), respectively.This change in refractive indices allowed this material to be a good transmittance component useful in physical and optical applications.The composition of TiO2 NPs and sulfamethoxazole was applied as a corrosion inhibitor for mild steel surface in a hydrochloric acid solution.The inhibition performance was studied by the weight loss method.The results from this study show that the new synergistic compounds act as a coating for mild steel and reduce the corrosion with an inhibition efficiency of 93.6%.The Langmuir adsorption isotherm model was utilized to evaluate the adsorption equilibrium of the corrosion inhibitor.