Article 2025 · 9 citations

A novel methionine-based pyrazole derivative as a corrosion inhibitor in 1 M HCl: Experimental and theoretical insights

Zaidi, Kaoutar, Elmsellem, Hicham, Daoudi, Walid, Dagdag, Omar, Al-Moubaraki, Aisha H., Al-Ahmari, Jamilah M., Kim, Hansang, Berisha, Avni, Aouniti, Abdelouahad, Dikici, Burak, Touzani, Rachid, Hammouti, Belkheir

Abstract

This study reports the synthesis and evaluation of a novel compound, methyl bis((3,5-dimethyl-1H-pyrazol-1-yl) methyl)-DL-methioninate (MMPz), as an eco-friendly corrosion inhibitor for mild steel in 1 M HCl. MMPz exhibited a mixed-type inhibition behavior, predominantly anodic, with a maximum efficiency of 95 % at 10-3 M and 308 K. Surface and electrochemical analyses confirmed the formation of a stable protective film and suggested a chemical adsorption mechanism following the Langmuir isotherm. Computational modeling supported the experimental results by highlighting strong correlations between the molecular structure and inhibition performance. These findings position MMPz as a promising and sustainable corrosion inhibitor for acidic environments.

Keywords

Corrosion inhibition Pyrazole derivative Methionine-based inhibitor Adsorption isotherm Theoretical modeling Mild steel HCl MILD-STEEL CORROSION CARBON-STEEL SCHIFF-BASES ACID ADSORPTION EXTRACT GREEN SURFACE XPS COMBINATION

WoS Categories

Chemistry, Physical

Citation

Journal: COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
Year: 2025
Volume: 726
ISSN: 0927-7757
eISSN: 1873-4359
DOI: 10.1016/j.colsurfa.2025.137802
WoS UID: WOS:001542399300006

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