Existing inhibitors are mainly based on inorganic salts. For instance, calcium nitrite is the most common corrosion inhibitor for reinforced structures. Calcium nitrites suppress corrosion by acting as anodic inhibitors, increasing the corrosion potential, and converting ferrous ions into Fe₂O₃ to enhance steel protection. Sodium hydroxide is another corrosion inhibitor used in the industry; it prevents corrosion by acting on the oxygen reduction reaction at the cathode. However, the molecular-level corrosion prevention mechanisms of these inhibitors are not well understood, and their impact on steel structures is rarely studied.