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

Zaidi K., Elmsellem H., Daoudi W., Dagdag O., Al-Moubaraki A. H., Al-Ahmari J. M., ...Daha Fazla

Colloids and Surfaces A: Physicochemical and Engineering Aspects, cilt.726, 2025 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 726
  • Basım Tarihi: 2025
  • Doi Numarası: 10.1016/j.colsurfa.2025.137802
  • Dergi Adı: Colloids and Surfaces A: Physicochemical and Engineering Aspects
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Biotechnology Research Abstracts, Chemical Abstracts Core, Chimica, Compendex, EMBASE, INSPEC
  • Anahtar Kelimeler: Adsorption isotherm, Corrosion inhibition, HCl, Methionine-based inhibitor, Mild steel, Pyrazole derivative, Theoretical modeling
  • Atatürk Üniversitesi Adresli: Evet

Özet

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.