Evidence map›Paper›PMID 40750807›Full record

ArticleScientific reports2025

Electrochemical performance of a novel 1-(benzo[d]thiazol-2-yl)-3-methylguanidine as effective corrosion inhibitor for carbon steel in 1 M hydrochloric acid.

Amal M Abdel-Karim, Rasha A Azzam, Omnia El-Said Shehata, Mohamed A Adly, Omnia A A El-Shamy, Gamal A El Mahdy

Abstract read
In one paragraph

Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

3 citing papers in PubMed.

  1. Effect of 1RSC advances · 2026
    Article
  2. Article
  3. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Amal M Abdel-KarimPhysical Chemistry Department, National Research Centre, 33 El Bohouth St., Dokki, P.O.12622, Giza, Egypt. amalabdelkarim720@gmail.com.ORCID https://orcid.org/0000-0001-9210-084X
Rasha A AzzamCemistry Department, Faculty of Science, Helwan University, Cairo, 11795, Egypt.
Omnia El-Said ShehataPhysical Chemistry Department, National Research Centre, 33 El Bohouth St., Dokki, P.O.12622, Giza, Egypt.
Mohamed A AdlyCemistry Department, Faculty of Science, Helwan University, Cairo, 11795, Egypt.
Omnia A A El-Shamy3Department of Analysis and Evaluation, Egyptian Petroleum Research Institute (EPRI), Nasr City, Cairo, 11727, Egypt.
Gamal A El MahdyCemistry Department, Faculty of Science, Helwan University, Cairo, 11795, Egypt.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Guanidine benzothiazole (G) and 1-(benzo[d]thiazol-2-yl)-3-methylguanidine (AG) were successfully synthesized and characterized by infrared (FT-IR) and nuclear magnetic resonance (NMR) spectroscopy. Both compounds act as novel corrosion inhibitors for carbon steel in 1.0 M hydrochloric acid solution. Their inhibition efficiency was evaluated using potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS). Surface analysis via scanning electron microscope (SEM) and energy dispersive X-ray (EDX) confirmed the formation of a protective film on the steel surface. PDP results indicate that G and AG function as mixed-type inhibitors, with inhibition efficiency increasing with concentrations, reaching a maximum of 80% for G and 91.4% AG. The AG compound was seen to retard the rate of corrosion of carbon steel more effective than PP compound. Adsorption followed the Langmuir isotherm, suggesting monolayer adsorption on the metal surface. The high inhibition efficiencies were attributed to strong adsorption and the formation of a dense, protective barrier film. The corrosion inhibition performance of the synthesized molecule was evaluated using density functional theory (DFT). Quantum chemical parameters, including highest occupied molecular orbital (HOMO) and lowest occupied molecular orbital (LUMO), energy gap, hardness, and dipole moment, and other quantum descriptors were analyzed. Density functional theory (DTF) calculation supported the experimental finding, showing that the high efficiency correlates with a low energy gap and high dipole moment, which promote electron transfer and adsorption strength. Theoretical and experimental results showed strong agreement, confirming the potential of G and AG as effective inhibitors for carbon steel.

Indexed as

AdsorptionCarbon steelCorrosion inhibitorDFTEISGuanidine benzothiazolePDP

Identifiers

PMID40750807
PMCPMC12316920

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.