Enhanced corrosion resistance of carbon steel in an aggressive environment by a recently developed pyrazole derivative: Electrochemical, SEM/XPS/AFM, and theoretical investigation

In this paper, a new pyrazole derivative, namely, (2-(((3,5-dimethyl-1H-pyrazol-1-yl)methyl)amino)-5-nitrophenyl)(phenyl) methanone (2-DPM) was uniquely used as an inhibitor of corrosion for carbon steel (C-S) in acidic solution (1 M HCl). Numerous techniques include electrochemical impedance spectr...

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Bibliographic Details
Published in:Journal of solid state electrochemistry 2024, Vol.28 (8), p.2837-2860
Main Authors: Timoudan, N., Faydy, M. El, Titi, A., Warad, I., Benhiba, F., Alsulmi, Ali, Dikici, B., Touzani, A., Dafali, A., Bellaouchou, A., Bentiss, F., Zarrouk, A.
Format: Article
Language:English
Subjects:
Analytical Chemistry
Atomic force microscopy
Carbon steel
Carbon steels
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Condensed Matter Physics
Contact angle
Corrosion
Corrosion inhibitors
Corrosion resistance
Corrosion resistant steels
Electrochemical impedance spectroscopy
Electrochemistry
Electrode polarization
Energy Storage
Metal surfaces
Molecular dynamics
Original Paper
Photoelectrons
Physical Chemistry
Pyrazole
Quantum chemistry
Scanning electron microscopy
Spectroscopic analysis
X ray photoelectron spectroscopy
X-ray spectroscopy
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Summary:In this paper, a new pyrazole derivative, namely, (2-(((3,5-dimethyl-1H-pyrazol-1-yl)methyl)amino)-5-nitrophenyl)(phenyl) methanone (2-DPM) was uniquely used as an inhibitor of corrosion for carbon steel (C-S) in acidic solution (1 M HCl). Numerous techniques include electrochemical impedance spectroscopy (EIS), potentiodynamic polarization (PDP), surface morphology analysis (SEM), energy-dispersive X-ray spectrometry (EDX), atom force microscopy (AFM), angle of contact, X-ray diffraction analysis (XRD), X-ray photoelectron spectroscopy (XPS), and UV-visible analysis. Molecular dynamic simulations (MDs) and quantum chemical computations (DFT) were utilized to assess the 2-DPM ability. The results show that the inhibitor, acting in a mixed inhibitory mode, considerably reduces the incidence of C-S corrosion by protecting the metal surface with an effective protective layer. The chemically adsorbed novel pyrazole (2-DPM) molecule has an improved corrosion performance of nearly 96% at 303 K, which is supported by EIS and theoretical analyses. The Langmuir isotherm model was shown to regulate the adsorption of 2-DPM on the surface of C-S. Finally, there is a strong correlation between theoretical research and experimental findings.
ISSN:1432-8488
1433-0768
DOI:10.1007/s10008-024-05846-1