Metal(II) Complexes as Potential Anticorrosion and Antifouling Agents—A Review

The reason for this view is to introduce a number of novel anticorrosion and antifouling agents that are friendlier to the environment in diverse situations. These days, the use of metal complexes plays an essential and vital role in anticorrosion activity due to free electron pairs. Inhibitor adsorbed on the surface of the metal in the form of a wall, which performs an imperative role in putting a stop to the corrosion activity and consequently inhibits the cathodic and anodic reactions. Advanced factors like electrochemical impedance study, weight loss, adsorption isotherms, and thermodynamic parameters were elaborated here. The current review addressed the presence of heteroatoms like oxygen, nitrogen, sulfur, and π electron clouds in conjugation and the inhibitory competence of metal complexes, which is greatly appreciable. We focused on the study of new complexes that are more potent in antifouling activity.