Benzodiazepine Derivatives as Corrosion Inhibitors of Carbon Steel in HCl Media: Electrochemical and Theoretical Studies

Laabaissi, T.; Benhiba, F.; Rouifi, Z.; Rbaa, Mohamed; Oudda, H.; Zarrok, H.; Lakhrissi, B.; Guenbour, A.; Warad, Ismail; Zarrouk, A.

doi:10.1134/s2070205119050149

Cited by 34 publications

(18 citation statements)

References 38 publications

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“…Also, it can be conclude that concentration directly proportional with /θ and the relation is a good linearity as shown in Fig. 8, suggesting the Langmuir model is suitable to describe the adsorption process of inhibitor molecules on AISI surface, furthermore indicates to strong adsorption of PAPM molecules on AISI steel surface (Abdallah et al, 2016;Laabaissi et al, 2017;El Aoufir et al, 2017;Adardour et al, 2016).…”

Section: Adsorption Behavior Of Gemini Surfactant:-mentioning

confidence: 93%

“…Quantum methodology could help in the identify of appropriate sites to interact between the inhibitor and metal surface, also information provide about the configuration lowest adsorption energy onto the metal surface which cannot be experimentally (Khadom,2017;Laabaissi et al, 2017;Shahabi and Norouzi,2017). Electronic characteristics obtained by DFT/B3LYP/6-31G (d) are E LUMO , E HOMO , energy gap, solvation energy and dipole moment.…”

Section: Theoretical Study Through Quantum Methodology:-mentioning

confidence: 99%

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Gemini Surfactant Performance Evaluation as Inhibitive action of PAPM for Treatment of AISI steel Corrosion and Studying Temperatures Influence in Acidic Medium

2019

University of Thi-Qar Journal of Science

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To inhibit corrosion of the AISI 4130 steel in 1M H 2 SO 4 solution at different temperatures, the gemini surfactant was used, namely N,N'-((1,4-phenylenebis(azanediyl)) bis (2-hydroxy propane-3,1-diyl)) bis (N,Ndimethyldecan-1-aminium) (PAPM). The gemini surfactant by electrochemical impedance spectroscopy technique and weight loss method has been evaluated at different temperatures 30, 40 and 50°C. The gemini surfactant showed a very good performance as a corrosion inhibitor in acidic solution, and inhibition efficiency increases with increase inhibitor concentration but decreased with increasing temperatures. Impedance technique results shown, that studied molecule act as mixed-type inhibitor toward AISI steel, also values of standard free energy of adsorption suggest the physisorption and chemisorption were occurred for inhibitor molecules on AISI surface. In addition, the inhibitor adsorption behavior on the AISI surface was investigated at specified temperatures and it coincide with Langmuir's adsorption isotherm. Furthermore, time effect on corrosion inhibition efficiency was studied where results shown that influence was slight. From quantum calculations, the inhibitor act as soft molecule were noted, also it was shown that the inhibitor more responding for reacting with the AISI surface and prefer the electrophilic attack because it contains on a nucleophilic centers. Experimental inhibition efficiency obtained from both two methods are on a good agreement to each other where optimum efficiency reached 90.32% for weight loss method and 87.17% for EIS technique. On other hand, theoretical inhibition efficiency and experimental inhibition efficiency were in a good agreement to each other, where as theoretical efficiency reached 92.35%.

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Section: Adsorption Behavior Of Gemini Surfactant:-mentioning

confidence: 93%

Section: Theoretical Study Through Quantum Methodology:-mentioning

confidence: 99%

Gemini Surfactant Performance Evaluation as Inhibitive action of PAPM for Treatment of AISI steel Corrosion and Studying Temperatures Influence in Acidic Medium

2019

University of Thi-Qar Journal of Science

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“…These G Δ ads 0 values are between the range of the physical and chemical adsorption, indicating that the three studied inhibitors' adsorption on the mild steel surface involves both chemical and physical adsorption (mixed-type). [24,36] 3.4 | SEM An SEM analysis was carried out to study the surface morphology of the mild steel. Figure 6 shows SEM images of the polished mild steel surface sample and the immersed samples for 5 hr in 1 M hydrochloric acid with and without 10 −3 M of methoxyBBD, methylBBD, and chloroBBD inhibitors.…”

Section: Adsorption Isothermmentioning

confidence: 99%

“…The aromatic rings and the presence of oxygen and nitrogen atoms with lone pairs of electrons enable them to perform as corrosion inhibitors. [20,24] Besides the experimental measurements, theoretical tools have useful and powerful applications in corrosion inhibition studies. [25,26] Theoretical and computational means have become increasingly desirable to be used in corrosion inhibition studies.…”

mentioning

confidence: 99%

Effect of substituents on the inhibitive properties of newly synthesized 5‐benzoyl‐4‐methyl‐1,3,4,5‐tetrahydro‐2H‐1,5‐benzodiazepin‐2‐one derivatives against mild steel corrosion in an acidic medium

Al-Fakih

Al-Maqtari

Aziz

et al. 2020

Materials & Corrosion

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Inhibition performance of three newly synthesized 1,5-benzodiazepine derivatives with 4-methoxybenzoyl (methoxyBBD), 3-methylbenzoyl (methylBBD), and 2-chlorobenzoyl (chloroBBD) groups was investigated against mild steel corrosion in 1 M hydrochloric acid. The potentiodynamic polarization, electrochemical impedance spectroscopy, and adsorption isotherms were used for characterization of the corrosion processes. Surface morphology was studied by scanning electron microscope (SEM). Quantum chemical calculations were carried out to establish the active sites of the inhibitors. The results show that the inhibitors inhibit mild steel corrosion and their inhibition efficiencies (IE) increase with the increase in concentration. The methoxyBBD shows a higher inhibiting effect with IE of 89.13% at 10 −3 M, followed by methylBBD. All three inhibitors act as mixed-type inhibitors with predominant control of cathodic reaction for chloroBBD and their adsorption obeys Langmuir isotherm. The SEM analysis confirms the inhibitors' adsorption on the mild steel surface. The active sites of the inhibitors were effectively established using the density functional theory method on the basis of natural atomic charge, highest occupied molecular orbital, and the lowest unoccupied molecular orbital frontier molecular orbitals. The experimental and quantum results prove the inhibition performance trend of the inhibitors as follows: methoxyBBD > methylBBD > chloroBBD.

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“…From the Echem Analyst 5.0 software package installed in the instrument, polarization parameters such as corrosion potential (E corr ), corrosion current (i corr ), anodic (β a ) and cathodic Tafel slopes (β c ) were obtained by extrapolation. Inhibition efficiency (IE %) was calculated using i corr calculated using the following relationship: are the corrosion current densities in the absence and presence of QNMS, respectively [19].…”

Section: Electrochemical Measurementsmentioning

confidence: 99%

New quinoxaline derivative as a green corrosion inhibitor for mild steel in mild acidic medium: Electrochemical and theoretical studies

Laabaissi¹,

Benhiba²,

Rouifi³

et al. 2019

Int. J. Corros. Scale Inhib.

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The influence of new quinoxaline derivative namely (E)-3-(4-methylstyryl)quinoxalin-2(1H)one (QNMS) on the corrosion of mild steel in 1 M HCl was studied using using Tafel polarization and electrochemical impedance spectroscopy. Quantum chemical calculations were performed using methods based on density functional theory (DFT / B3LYP) and Monte Carlo simulations (MCs). The inhibitor studied [(E)-3-(4-methylstyryl)quinoxalin-2(1H)-one (QNMS)] showed a maximum inhibition efficiency of 91% at 10-3 M. Adsorption of QNMS on mild steel surface follows the Langmuir adsorption isotherm in order to discover the mode of adsorption process, various thermodynamic and activation parameters were evaluated. Potentiodynamic polarization studies show that QNMS compound acts as a mixed inhibitor. Data obtained from EIS measurements were analyzed to model the corrosion inhibition process through the appropriate equivalent circuit model. The EIS data bring that, the development of a protective layer of QNMS increases the charge transfer resistance and decreases the double layer capacitance of mild steel in acid medium. Quantum chemical calculations were employed to study the electronic properties of QNMS to ascertain the correlation between the inhibitory effect and the molecular structure. Both the experimental and theoretical (E HOMO , E LUMO , ΔE, µ, ΔN,... and Monte Carlo simulation) results are in good agreement with each other in this regard and confirm that QNMS is an effective inhibitor.

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Benzodiazepine Derivatives as Corrosion Inhibitors of Carbon Steel in HCl Media: Electrochemical and Theoretical Studies

Cited by 34 publications

References 38 publications

Gemini Surfactant Performance Evaluation as Inhibitive action of PAPM for Treatment of AISI steel Corrosion and Studying Temperatures Influence in Acidic Medium

Gemini Surfactant Performance Evaluation as Inhibitive action of PAPM for Treatment of AISI steel Corrosion and Studying Temperatures Influence in Acidic Medium

Effect of substituents on the inhibitive properties of newly synthesized 5‐benzoyl‐4‐methyl‐1,3,4,5‐tetrahydro‐2H‐1,5‐benzodiazepin‐2‐one derivatives against mild steel corrosion in an acidic medium

New quinoxaline derivative as a green corrosion inhibitor for mild steel in mild acidic medium: Electrochemical and theoretical studies

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