Rosmarinus officinalis l. Oil as an Eco-Friendly corrosion inhibitor for mild steel in acidic Solution: Experimental and computational studies
- Authors
- Daoudi, W.; Dagdag, O.; Verma, C.; Berdimurodov, E.; Oussaid, A.; Berisha, A.; Oussaid, A.; Abboud, M.; El, Aatiaoui A.
- Issue Date
- Mar-2024
- Publisher
- Elsevier B.V.
- Keywords
- Corrosion inhibitor; DFT; Eco-friendly; Hydrochloric acid; MD and MC simulations; Rosmarinus officinalis L.; Steel
- Citation
- Inorganic Chemistry Communications, v.161
- Journal Title
- Inorganic Chemistry Communications
- Volume
- 161
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/90708
- DOI
- 10.1016/j.inoche.2024.112030
- ISSN
- 1387-7003
1879-0259
- Abstract
- In this research, Rosmarinus officinalis L. (ROL) essential oil extracted from the plant was initially introduced as a green anti-corrosion agent for mild steel (MS) in a 1 M HCl solution. The components of the extract were identified using gas chromatography-mass spectrometry (GC–MS) and UV–Vis method. Gravimetric and electrochemical techniques (EIS and PDP) demonstrated that ROL inhibited steel corrosion by 90 % at a concentration of 1.5 g/l. The PDP experiment indicated that ROL essential oil acted as a mixed-type inhibitor with a cathodic predominance. The morphological and elemental characteristics of the metal surface were examined using SEM and EDX, revealing the formation of a corrosion-resistant film on the metal surface. The inhibited corrosive solutions were characterised before and after immersing MS using UV–visible spectrophotometry, indicating the possibility of iron-ROL complex formation. Finally, theoretical calculations using DFT, MC, and MD simulations were conducted and correlated with experimental results. © 2024 Elsevier B.V.
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