Amino acid-derived imidazole zwitterion as green interfacial corrosion inhibitor for cold rolled steel

Q1 Environmental Science

Case Studies in Chemical and Environmental Engineering Pub Date : 2025-01-10 DOI:10.1016/j.cscee.2025.101103

Wan Mohd Norsani Wan Nik , Jiyaul Haque , Mohd Sabri Mohd Ghazali , Atria Pradityana , Izionworu Vincent Onuegbu , Walid Daoudi , Elyor Berdimurodov , Ahmed Abdulamier Al-Amiery

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Abstract

A natural amino acid methionine-derived imidazole zwitterion was synthesized and investigated as a corrosion inhibitor on cold-rolled steel in an acid environment using weight loss, electrochemistry, and SEM techniques. The synthesized imidazole zwitterion inhibitor was fulfilled with green parameters: multicomponent single-step reaction, reaction at ambient temperature, and water used as a solvent. The corrosion study results show that imidazole zwitterion exhibits effective inhibition efficiency (84 %) at very low concentrations (100 ppm). The imidazole zwitterion exhibited excellent inhibition efficiency (72 %) at high temperature (95 °C). SEM results supported the experimental findings. The adsorption of imidazole zwitterion obeys the Langmuir adsorption isotherm with a uniform inhibitor film achieved via physical and chemical adsorption mechanisms. Imidazole zwitterion can be useful in low inhibitor concentration applications such as pipeline flushing and cleaning.

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