Evidence map›Paper›PMID 42231469›Full record

ArticleBMC chemistry2026

Pyrazolo-triazole/hydrazono ester EPMT as a mixed-type corrosion inhibitor for low-carbon steel in 0.5 M HCl: electrochemical, surface, and computational evidence.

Ghada G El-Bana, Mostafa E Salem, Ahmed Z Ibrahim, Ahmed D H Deeb, Mohamed Abdel-Megid, Mansour Alsarrani, Mokhtar Al-Abyadh, Mostafa A A Mahmoud

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Article in BMC chemistry, 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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1 · What the graph read from it

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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

8 authors.

Ghada G El-BanaDepartment of Chemistry, Faculty of Science, Mansoura University, El-Gomhoria Street, Mansoura, 35516, Egypt.ORCID http://orcid.org/0000-0002-3766-8202
Mostafa E SalemChemistry Department, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh, 11623, Saudi Arabia.
Ahmed Z IbrahimChemistry Department, Faculty of Science, Suez Canal University, Ismailia, 41522, Egypt.
Ahmed D H DeebDepartment of Physical Sciences, Chemistry Division, College of Science, Jazan University, Jazan, 45142, Saudi Arabia.ORCID http://orcid.org/0000-0001-5029-2273
Mohamed Abdel-MegidChemistry Department, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh, 11623, Saudi Arabia.
Mansour AlsarraniDepartment of Chemistry, Faculty of Science, Al-Baha University, Alaqiq, Saudi Arabia.
Mokhtar Al-AbyadhCollege of Medicine and Health Science, Department of Pharmacy, University of Science and Technology, Aden, 15201, Yemen. m.alabiad2m4@gmail.com.
Mostafa A A MahmoudChemistry Department, Faculty of Science, Suez Canal University, Ismailia, 41522, Egypt.

Funding

Deanship of Scientific Research, Imam Mohammed Ibn Saud Islamic University IMSIU-DDRSP2602
6 · The paper itself

Abstract

A newly synthesized pyrazolo-triazole/hydrazono ester derivative, EPMT, was evaluated as a corrosion inhibitor for low-carbon steel (LCS) in 0.5 M HCl using weight-loss (WL) measurements, open-circuit potential (OCP), potentiodynamic polarization (PDP), electrochemical impedance spectroscopy (EIS), surface analysis, density-functional theory (DFT), and Monte Carlo (MC) adsorption modeling. The novelty of the work lies not only in the inhibitor performance, but also in the molecular scaffold itself: the EPMT framework merges a pyrazolo-triazole platform with a hydrazono ester/thioether functionality and therefore concentrates multiple adsorption-active centers (N, O, and S atoms together with extended pi-conjugation) within a single molecule. Structural confirmation was supported by FT-IR, 1 H NMR, 13 C NMR, and EI-MS data consistent with the assigned EPMT structure, including the reported molecular-ion peak at m/z 580.40. Experimentally, EPMT showed a strong concentration-response relationship, with WL inhibition efficiency rising from 59.09% at 50 ppm to 93.45% at 300 ppm and 298 K, while remaining 76.00% even at 328 K. PDP and EIS independently confirmed the same trend: the corrosion current density decreased from 0.161 to 0.010 × 10

Indexed as

0.5 M HClDFTElectrochemical impedance spectroscopyEPMTLow-carbon steelMonte Carlo adsorptionPyrazolo-triazole derivativeWeight loss

Identifiers

PMID42231469
PMCPMC13270599

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