Zinc oxide nanomaterials as good inhibitors of steel corrosion in chloride solution

The usefulness of zinc oxide nanoparticles (ZnONPs) prepared by the sol-gel method using coffee powder extract and zinc nitrate hexahydrate Zn(NO3).6H2O is investigated in this work. At room temperature, the zinc resource is Zn(NO3).6H2O. infrared spectroscopy, diffraction ray, UV spectrophotometer, transmission electron microscopy, and scanning electron microscopy techniques were applied. To detect produced nanoparticles. Due to the presence of single ionized oxygen vacancies, the UV-Vis absorption spectra exhibit an absorption band at 382 nm. According to XRD, the end product is highly crystalline ZnO with a size range of 10-40 nm. A spherical particles zinc oxide nano film network with an average size of 40 nm and a thickness of around 8 nm exists, according to SEM observations. The corrosion inhibiting effect of carbon steel in molar hydrochloric acid solution was also investigated through loss in weight and polarization curves studies. The findings revealed that as the concentration of ZnONPs increased, so increased the effectiveness of prevention. The anti-corrosion adsorption process on the surface of carbon steel follows Langmuir's behavior rather than Freundlich's, depending on the isotherm models. Mixed adsorption, spontaneously adsorb, and exothermic adsorption have already been found in the adsorption mechanism, according to thermodynamic parameters. ZnONPs appear to be excellent carbon steel corrosion inhibitors in acidic settings, and per the research. ZnONPs developed a good protective coating on the steel surface of, according to scanning electron microscopy (SEM) photographs.