Boosting the corrosion inhibition efficiency of the Clerodendrum serratum extract for steel in the presence of KCl

The impact of an extract from the Clerodendrum serratum plant on steel corrosion in a sulfuric acid solution was examined using weight loss analysis and electrochemical impedance spectroscopy (EIS). This research delves into the synergistic corrosion inhibition efficiency of Clerodendrum serratum in the presence of KCl. This extract contains Apigenin, Hispidulin, 7- hydroxyflavanone, Oleanolic acid, β-sitosterol, Campesterol, Stigmasterol, Ursolic acid, Serratin, Spinasterol, Queretaroic acid etc. The anti-corrosive properties of this extract are primarily attributed to the presence of numerous bonds and heteroatoms in its phytochemical composition. Instrumentation such as UV analysis provides detailed insights into molecular interactions, aiding in the understanding of inhibitive mechanisms. The effectiveness of corrosion inhibition improves as the concentration of plant extract is raised up to 3000 ppm. Utilizing Potentiodynamic polarization (PDP) examination, achieving 88.6 % efficiency without KCl and 93.05 % in the presence of KCl demonstrates a comprehensive approach for improving protective characteristics in practical applications.