Theoretical-experimental study of new synthesized hydrazine-hydrazone benzenesulfonamide inhibitors for carbon steel in a 1.0 M hcl: DFT, QSAR.

Walid E Elgammal, Reema H Aldahiri, Shereen M Al-Shomar, Saber M Hassan, Amr Gangan, N S Abdelshafi

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Article in Scientific reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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6 authors.

Walid E ElgammalChemistry Department, Faculty of Science (Boys), Al-Azhar University, Nasr City, 11884, Cairo, Egypt. walidebaied.sci85@azhar.edu.eg.ORCID http://orcid.org/0000-0002-5982-5635

Reema H AldahiriDepartment of Chemistry, College of Science, University of Jeddah, Jeddah, 21959, Saudi Arabia.

Shereen M Al-ShomarDepartment of Physics, College of Science, University of Ha'il, P.O. Box 2440, Ha'il, Saudi Arabia.

Saber M HassanChemistry Department, Faculty of Science (Boys), Al-Azhar University, Nasr City, 11884, Cairo, Egypt.

Amr GanganChemistry Department, Faculty of Science (Boys), Al-Azhar University, Nasr City, 11884, Cairo, Egypt.

N S AbdelshafiChemistry Department, Faculty of Education, Ain Shams University, Roxy, 11711, Cairo, Egypt. nashwasaad@edu.asu.edu.eg.ORCID http://orcid.org/0000-0001-5170-1745

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6 · The paper itself

Abstract

In this study, quantitative structure-activity relationship (QSAR) modeling using genetic function approximation was applied to predict the corrosion inhibition efficiency of three synthesized hydrazone derivatives, IHE, BHE, and AHE, on N80 carbon steel in 1.0 M HCl solution at various concentrations (50-400 ppm) and temperatures (298-358 K). The inhibitors' performance was evaluated via electrochemical impedance spectroscopy (EIS), potentiodynamic polarization (PDP), weight loss (WL), and surface analysis techniques. Corrosion inhibition increased with concentration, reaching maximum efficiencies of 90.34% (IHE), 85.93% (BHE), and 67.97% (AHE) at 400 ppm. Adsorption followed the Langmuir isotherm, indicating monolayer formation. High adsorption equilibrium constants (K

Indexed as

AC and DC techniquesAnticorrosion, QSAR, DFTCarbon steelHydrazone inhibitors

Identifiers

PMID42215526

DOI10.1038/s41598-026-39947-w

PMCPMC13236985

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