Enhanced corrosion inhibition of mild steel in acidic environments using essential oils of broad-leaved cattail: A comprehensive of electrochemical and theoretical studies

Lebkiri, Azeddine; Amri, Abdelhay; Kharbouch, Otmane; Bouzikri, Said; Merimi, Chaimae; Jebli, Assia; Mortadi, Khadija; Amri, Abdeslam; Ouakki, Moussa; Berisha, Avni; Kaya, SAVAŞ; Hsissou, Rachid; Hbaiz, El; Habsaoui, Amar

doi:10.1016/j.molstruc.2025.144771

Enhanced corrosion inhibition of mild steel in acidic environments using essential oils of broad-leaved cattail: A comprehensive of electrochemical and theoretical studies

Lebkiri A., Amri A. E., Kharbouch O., Bouzikri S., Merimi C., Jebli A., ...Daha Fazla

Journal of Molecular Structure, cilt.1354, 2026 (SCI-Expanded, Scopus)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 1354
Basım Tarihi: 2026
Doi Numarası: 10.1016/j.molstruc.2025.144771
Dergi Adı: Journal of Molecular Structure
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Chemical Abstracts Core, Chimica, Compendex, INSPEC
Anahtar Kelimeler: Chemisorption, Corrosion inhibition, Electrochemical impedance spectroscopy, Essential oil, Hydrochloric acid, Mild steel
Sivas Cumhuriyet Üniversitesi Adresli: Evet

Özet

In this study, high-performance environmental deterrent with natural essential oil (HE) in mild steel corrosion inhibition examined in 1 M HCl solution. Both potentiodynamic polarization (PP) curves and electrochemical impedance spectroscopy (EIS) were performed to study the corrosion behavior of HE. Results indicated that the HE reduced the corrosion current density from 983 to 42 µA cm-2, and the inhibition efficiency reach a maximum of 95.7 % at 0.5 g/L. In addition, the ∆Gads value of -41.023 kJ/mol indicates the electrostatic interactions between studied inhibitor and mild steel by chemisorption. The protective influence of HE was verified by energy-dispersive X-ray analysis (EDS) in conjunction with SEM, which revealed the formation of a stable protective coating on the steel surface. MC, MD and DFT calculations confirmed the experimental data obtained. These results offer crucial new insights into the method by which HE prevents corrosion, contributing to the development of new strategies for protecting metal surfaces in acidic environments.