New imidazole‐based dimers as potential inhibitors for mild steel corrosion in acidic media: Electrochemical and DFT evaluation. Issue 2 (13th August 2019)

• Record Type: Journal Article
• Authors: Abdulazeez, Ismail; Al‐Hamouz, Othman C.; Khaled, Mazen; Al‐Saadi, Abdulaziz A.
• Is Part Of: Materials and corrosion. Volume 71:Issue 2(2020)
• Page Start: 292
• Page End: 299
• Publication Date: 2019-08-13
• Subjects: acid corrosion -- DFT calculations -- imidazole‐based dimers -- metals and alloys -- thin films; Materials -- Periodicals; Metals -- Periodicals; Corrosion and anti-corrosives -- Periodicals; 620.1122305
• DOI: 10.1002/maco.201911123
• Languages: English
• ISSNs: 0947-5117

Abstract

Abstract: We report the synthesis and corrosion inhibition performance of two imidazole‐based materials, 1, 1′‐(4‐methyl‐1, 3‐phenylene)bis(3‐(3‐(1 H ‐imidazol‐1‐yl)propyl)urea) (PIP) and 1, 1′‐(hexane‐1, 6‐diyl)bis(3‐(3‐(1 H ‐imidazol‐1‐yl)propyl)urea) (HIP) dimers, in 1.0 M HCl. Electrochemical assessments indicated that the synthesized dimers facilitated the formation of a protective layer at the metal‐electrolyte interface and, as a result, blocked the active corrosion sites. At a concentration of 100 ppm, PIP behaved as a potential mixed‐type anticorrosive material with an overall efficiency of 99%. Density functional theory calculations showed that the aromaticity existing in the PIP backbone plays a major role in facilitating the corrosion‐inhibition role. Abstract : The synthesis and corrosion‐inhibition performance of two imidazole‐based materials, 1, 1′‐(4‐methyl‐1, 3‐phenylene)bis(3‐(3‐(1H‐imidazol‐1‐yl)propyl)urea) and 1, 1′‐(hexane‐1, 6‐diyl)bis(3‐(3‐(1H‐imidazol‐1‐yl)propyl)urea) dimers, in 1.0 M HCl is reported. Electrochemical assessments indicated that the synthesized dimers facilitated the formation of a protective layer at the metal‐electrolyte interface and, as a result, blocked the active corrosion sites.