Effect of Schiff's bases on corrosion protection of mild steel in hydrochloric acid medium: Electrochemical, quantum chemical and surface characterization studies

Kalkhambkar, Arjun G; Rajappa, S. K.

doi:10.1016/j.ceja.2022.100407

Cited by 12 publications

(3 citation statements)

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“…The mechanism of preventing corrosion of the MS surface in an acidic environment in the presence of a Schiff base inhibitor has been examined by FE-SEM and EDX analysis methods in many studies in the literature (Gupta et al , 2022; Khanna et al , 2024; Kalkhambkar and Rajappa, 2022). FE-SEM data and EDX results of MS in 1 M HCl media without (a) and with (b) of 5 × 10 −2 M HEMAP taken after 24 h are given in Figure 6.…”

Section: Resultsmentioning

confidence: 99%

A novel corrosion inhibitor based on a Schiff base for mild steel in 1M HCl: synthesis and anticorrosion study

Baran Aydın,

Başaran,

Ateş

et al. 2024

ACMM

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Purpose The aim of this study was to investigate the activity of 4-((4-((2-hydroxyethyl)(methyl)amino)benzylidene) amino)-1,5-dimethyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one (HEMAP), a Schiff base synthesized and characterized for the first time, to the authors’ knowledge, as a novel inhibitor against corrosion of mild steel (MS) in hydrochloric acid solution. Design/methodology/approach HEMAP was characterized by some spectroscopic methods including High-Resolution Mass Spectrometry (HRMS), Proton Nuclear Magnetic Resonance (1H NMR), Carbon-13 (C13) nuclear magnetic resonance (13C NMR) and Fourier Transform Infrared Spectroscopy (FT-IR). Then, the inhibition efficiency of HEMAP on MS in a hydrochloric acid solution was investigated by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). To explain the inhibition mechanism, the surface charge, adsorption isotherms and thermodynamic parameters of MS in the inhibitor solution were studied. Findings EIS tests displayed that the highest inhibition efficiency was calculated approximately as 99.5% for 5 × 10−2 M HEMAP in 1 M HCl solution. The adsorption of HEMAP on the MS surface was found to be compatible with the Langmuir model isotherm. The thermodynamic parameter results showed that the standard free energy of adsorption of HEMAP on the MS surface was found to be more chemical than physical. Originality/value This study is important in terms of demonstrating the performance of the first synthesized HEMAP molecule as an inhibitor against the corrosion of MS in acidic media. EIS tests displayed that the highest inhibition efficiency was calculated approximately as 99.5% for 5 × 10−2 M HEMAP in 1 M HCl solution.

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Section: Resultsmentioning

confidence: 99%

A novel corrosion inhibitor based on a Schiff base for mild steel in 1M HCl: synthesis and anticorrosion study

Baran Aydın,

Başaran,

Ateş

et al. 2024

ACMM

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“…According to Fukui’s theory, the HOMO and LUMO boundary molecular orbitals could be utilized to predict the reactivity of the inhibitor toward the metallic surface. This theory is based on the principle that only Frontier molecular orbitals are of real interest when studying a chemical reaction with Frontier control ( Kalkhambkar and Rajappa, 2022 ; Swathi et al, 2022 ). HOMO energy is often linked to the molecule’s capacity to release electrons into available orbits.…”

Section: Resultsmentioning

confidence: 99%

Unraveling the corrosion inhibition behavior of prinivil drug on mild steel in 1M HCl corrosive solution: insights from density functional theory, molecular dynamics, and experimental approaches

Thakur,

Kumar,

Dagdag

et al. 2024

Front. Chem.

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The deterioration of mild steel in an acidic environment poses a significant challenge in various industries. The emergence of effective corrosion inhibitors has drawn attention to studies aimed at reducing the harmful consequences of corrosion. In this study, the corrosion inhibition efficiency of Prinivil in a 1M HCl solution through various electrochemical and gravimetric techniques has been investigated for the first time. The results demonstrated that the inhibition efficiency of Prinivil expanded from 61.37% at 50 ppm to 97.35% at 500 ppm concentration at 298 K. With a regression coefficient (R2) of 0.987, Kads value of 0.935 and Ea value of 43.024 kJ/mol at 500 ppm concentration of inhibitor, a strong affinity of Prinivil for adsorption onto the metal surface has been significantly found. Scanning electron microscopy (SEM) and contact angle measurement analyses further support the inhibitory behavior of Prinivil, demonstrating the production of a defensive layer on the surface of mild steel. Additionally, molecular dynamics (MD) and Monte Carlo simulations were employed to investigate the stability and interactions between Prinivil and the metallic surface (Fe (1 1 0)) at the atomic level. The computed results reveal strong adsorption of Prinivil upon the steel surface, confirming its viability as a corrosion inhibitor.

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“…Organic inhibitors are thought to be able to suppress corrosion in aggressive acidic media by adsorption on metal-electrolyte interfaces, which leads to the formation of an electric double layer. 1,42 The ndings in Table 4 demonstrate that the R ct values for the inhibited case are much greater than that for the noninhibited condition. This result suggests that the difficulty of charge transfer in the presence of MISB is due to its adhesion to the metal-electrolyte interfaces.…”

Section: Electrochemical Impedance Spectroscopymentioning

confidence: 95%

Melamine–isatin tris Schiff base as an efficient corrosion inhibitor for mild steel in 0.5 molar hydrochloric acid solution: weight loss, electrochemical and surface studies

et al. 2023

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Effect of Schiff's bases on corrosion protection of mild steel in hydrochloric acid medium: Electrochemical, quantum chemical and surface characterization studies

Cited by 12 publications

References 50 publications

A novel corrosion inhibitor based on a Schiff base for mild steel in 1M HCl: synthesis and anticorrosion study

A novel corrosion inhibitor based on a Schiff base for mild steel in 1M HCl: synthesis and anticorrosion study

Unraveling the corrosion inhibition behavior of prinivil drug on mild steel in 1M HCl corrosive solution: insights from density functional theory, molecular dynamics, and experimental approaches

Melamine–isatin tris Schiff base as an efficient corrosion inhibitor for mild steel in 0.5 molar hydrochloric acid solution: weight loss, electrochemical and surface studies

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