Synthesis and corrosion inhibition evaluation of a new schiff base hydrazone for mild steel corrosion in HCl medium: electrochemical, DFT, and molecular dynamics simulations studies

  • Maryam Chafiq
  • , Abdelkarim Chaouiki
  • , Hassane Lgaz
  • , Rachid Salghi*
  • , Santosh L. Gaonkar
  • , K. Subrahmanya Bhat
  • , Riadh Marzouki
  • , Ismat H. Ali
  • , Mohammad I. Khan
  • , Hiroki Shimizu
  • , Ill Min Chung
  • *Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    55 Citations (Scopus)

    Abstract

    The development of cost-effective, sustainable, eco-friendly and efficient compounds is a renovated science and a demanding assignment for today’s chemists and technology specialists. In this context, the anticorrosion effect of a new Schiff base hydrazone, namely (E)-2-(4-(2-(methyl(pyridin-2-yl)amino)ethoxy)benzylidiene)hydrazine-1-carboxamide (MPAH) against the mild steel (MS) surface in 1.0 M HCl has been analyzed utilizing experimental methods, thermodynamic characterizations, and computational studies. MPAH has proven to be an effective inhibitor in 1.0 M HCl solution. Its inhibition performance improved by raising the concentration of the compound to an optimal concentration of 5 × 10−3 M, and 97% efficiency was achieved at 303 K. Inhibitor adsorption on the MS has been explicated with both physical and chemical interactions. The adsorption was in accordance with the isotherm of Langmuir. The impact of MPAH on the surface of MS had been confirmed utilizing SEM/EDX, electrochemical impedance spectroscopy (EIS), gravimetric measurements (WL), and potentiodynamic polarization (PDP). The adsorption of the studied compound on the MS surface has also been investigated by DFT and the molecular dynamics (MD) simulations.

    Original languageEnglish
    Pages (from-to)1283-1314
    Number of pages32
    JournalJournal of Adhesion Science and Technology
    Volume34
    Issue number12
    DOIs
    Publication statusPublished - 17-06-2020

    All Science Journal Classification (ASJC) codes

    • General Chemistry
    • Mechanics of Materials
    • Surfaces and Interfaces
    • Surfaces, Coatings and Films
    • Materials Chemistry

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