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Marsoul A, Ijjaali M, Elhajjaji F, Taleb M, Salim R, Boukir A. Phytochemical screening, total phenolic and flavonoid methanolic extract of pomegranate bark (Punica granatum L): Evaluation of the inhibitory effect in acidic medium 1 M HCl. ACTA ACUST UNITED AC 2020. [DOI: 10.1016/j.matpr.2020.04.202] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Tan B, Zhang S, Qiang Y, Li W, Li H, Feng L, Guo L, Xu C, Chen S, Zhang G. Experimental and theoretical studies on the inhibition properties of three diphenyl disulfide derivatives on copper corrosion in acid medium. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2019.111975] [Citation(s) in RCA: 123] [Impact Index Per Article: 30.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Dagdag O, Safi Z, Hsissou R, Erramli H, El Bouchti M, Wazzan N, Guo L, Verma C, Ebenso EE, El Harfi A. Epoxy pre-polymers as new and effective materials for corrosion inhibition of carbon steel in acidic medium: Computational and experimental studies. Sci Rep 2019; 9:11715. [PMID: 31406200 PMCID: PMC6691106 DOI: 10.1038/s41598-019-48284-0] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 08/01/2019] [Indexed: 11/09/2022] Open
Abstract
Present study is designed for the synthesis, characterization and corrosion inhibition behavior of two diamine aromatic epoxy pre-polymers (DAEPs) namely, N1,N1,N2,N2-tetrakis (oxiran-2-ylmethyl) benzene-1,2-diamine (DAEP1) and 4-methyl-N1,N1,N2,N2-tetrakis (oxiran-2-ylmethyl) benzene-1,2-diamine (DAEP2) for carbon steel corrosion in acidic medium. Synthesized DAEPs were characterized using spectral (Nuclear magnetic resonance (1H NMR) and Fourier transform infrared-attenuated total reflection (FTIR-ATR)) techniques. Viscosity studies carried out at four different temperatures (20-80 °C) increase in temperature causes significant reduction in their viscosities. The anticorrosive properties of DAEPs differing in the nature of substituents, for carbon steel corrosion in 1 M HCl solution was evaluated using several experimental and computational techniques. Both experimental and computational studies showed that inhibitor (DAEP2) that contains electron releasing methyl (-CH3) showed higher protectiveness as compared to the inhibitor (DAEP1) without substituent (-H). Electrochemical results demonstrate that DAEPs act as reasonably good inhibitors for carbon steel in 1 M HCl medium and their effectiveness followed the sequence: DAEP2 (92.9%) > DAEP1 (91.7%). The PDP results show that the diamine aromatic epoxy pre-polymers molecules (DAEPs) act as mixed type inhibitors. Electrochemical study was also supported using scanning electron microscopy (SEM) method were significant improvement in the surface morphology of inhibited (by DAEPs) metallic specimens was obtained. Results derived from computational density functional theory (DFT) and molecular dynamics (MD) simulationsand studies were consistent with the experimental results derived from SEM, EIS and PDP electrochemical studies. Adsorption of the DAEPs obeyed the Langmuir adsorption isotherm model.
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Affiliation(s)
- Omar Dagdag
- Laboratory of Agroresources, Polymers and Process Engineering (LAPPE), Department of Chemistry, Faculty of Science, Ibn Tofail University, BP 133, 14000, Kenitra, Morocco
| | - Zaki Safi
- Al Azhar University-Gaza, Chemistry Department, Faculty of Science, P.O Box 1277, Gaza, Palestine
| | - Rachid Hsissou
- Laboratory of Agroresources, Polymers and Process Engineering (LAPPE), Department of Chemistry, Faculty of Science, Ibn Tofail University, BP 133, 14000, Kenitra, Morocco
| | - Hamid Erramli
- Laboratory of Materials, Electrochemistry and Environment, Department of Chemistry, Faculty of Sciences, Ibn Tofail University, Kenitra, Morocco
| | - Mehdi El Bouchti
- Higher School of Textile and Clothing Industries, Laboratory REMTEX, BP 7731, Oulfa, Casablanca, Morocco
| | - Nuha Wazzan
- King Abdulaziz University, Chemistry Department, Faculty of Science, P.O Box 42805, Jeddah, 21589, Saudi Arabia
| | - Lei Guo
- School of Materials and Chemical Engineering, Tongren University, Tongren, 554300, China
| | - Chandrabhan Verma
- Material Science Innovation & Modelling (MaSIM) Research Focus Area, Faculty of Natural and Agricultural Sciences, North-West University, Private Bag X2046, Mmabatho, 2735, South Africa.
- Department of Chemistry, Faculty of Natural and Agricultural Sciences, School of Chemical and Physical Sciences, North-West University, Private Bag X2046, Mmabatho, 2735, South Africa.
| | - E E Ebenso
- Material Science Innovation & Modelling (MaSIM) Research Focus Area, Faculty of Natural and Agricultural Sciences, North-West University, Private Bag X2046, Mmabatho, 2735, South Africa.
- Department of Chemistry, Faculty of Natural and Agricultural Sciences, School of Chemical and Physical Sciences, North-West University, Private Bag X2046, Mmabatho, 2735, South Africa.
| | - Ahmed El Harfi
- Laboratory of Agroresources, Polymers and Process Engineering (LAPPE), Department of Chemistry, Faculty of Science, Ibn Tofail University, BP 133, 14000, Kenitra, Morocco
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EL Basiony NM, Elgendy A, Nady H, Migahed MA, Zaki EG. Adsorption characteristics and inhibition effect of two Schiff base compounds on corrosion of mild steel in 0.5 M HCl solution: experimental, DFT studies, and Monte Carlo simulation. RSC Adv 2019; 9:10473-10485. [PMID: 35515280 PMCID: PMC9062527 DOI: 10.1039/c9ra00397e] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 03/17/2019] [Indexed: 11/21/2022] Open
Abstract
In this work, we report the synthesis of two Schiff bases of substituted gallic acid derivatives via amidation reaction and their characterization using 1H-NMR spectroscopy to study their inhibition performance on the aggressive attack of HCl on mild steel (MS). The inhibitive performance was examined using chemical (weight loss) and electrochemical (Tafel and EIS) test methods. The results indicate that these derivatives significantly suppress the dissolution rate of mild steel via adsorption phenomena, which correlates to the Langmuir adsorption model. Tafel data display the mixed-type properties of these compounds and EIS results show that increasing Schiff base concentration not only leads to delaying the charge transfer (Rct) of iron from 26.4 ohm cm−2 to 227.7 ohm cm−2 but also decreases the capacitance of the adsorbed double layer (Cdl) from 8.58 (F cm−2) × 10−5 to 2.55 (F cm−2) × 10−5. The inhibition efficiency percentage reaches the peak (90%) at optimum concentration of 250 ppm. The Monte Carlo simulations confirm the adsorption ability of the as-prepared compounds on the Fe (1 1 0) crystal. The SEM/EDX results revealed the presence of a protective film on the mild steel sample. Structures of the synthesized Schiff bases inhibitor.![]()
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Affiliation(s)
| | - Amr. Elgendy
- Egyptian Petroleum Research Institute (EPRI)
- Cairo
- Egypt
| | - H. Nady
- Chemistry Department
- Faculty of Science
- Fayoum University
- Egypt
| | - M. A. Migahed
- Egyptian Petroleum Research Institute (EPRI)
- Cairo
- Egypt
| | - E. G. Zaki
- Egyptian Petroleum Research Institute (EPRI)
- Cairo
- Egypt
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Dagdag O, Safi Z, Erramli H, Cherkaoui O, Wazzan N, Guo L, Verma C, Ebenso EE, El Harfi A. Adsorption and anticorrosive behavior of aromatic epoxy monomers on carbon steel corrosion in acidic solution: computational studies and sustained experimental studies. RSC Adv 2019; 9:14782-14796. [PMID: 35516296 PMCID: PMC9064207 DOI: 10.1039/c9ra01672d] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 04/17/2019] [Indexed: 11/24/2022] Open
Abstract
Herein, the synthesis, characterization and corrosion inhibition effectiveness of two aromatic epoxy monomers (AEMs) namely, 2-(oxiran-2-yl-methoxy)-N,N-bis(oxiran-2-yl-methyl)aniline (AEM1) and N,N-bis(oxiran-2-ylmethyl)-2-((oxiran-2-ylmethyl) thio)aniline (AEM2), in carbon steel corrosive dissolution in 1 M HCl solution is investigated using computational and experimental techniques. AEM1 and AEM2 were characterized using FT-IR, 1H NMR and 13C NMR spectroscopy techniques. Electrochemical results demonstrated that AEMs act as reasonably good corrosion inhibitors for carbon steel in 1 M HCl medium and their effectiveness followed the sequence: AEM2 (95.4%) > AEM1 (94.3%). A PDP study showed that AEMs act as mixed-type inhibitors with slight anodic predominance. Adsorption of the AEMs obeyed the Langmuir isotherm model. Interactions between AEMs and the metallic surface was further studied using DFT and MD simulations that give several computational parameters such as I, A, EHOMO, ELUMO, ΔE, δ, χ, ρ, σ, η, ΔN and Eads. The experimental and computational results were in good agreement and well complimented each other. Herein, the synthesis, characterization and corrosion inhibition effectiveness of two aromatic epoxy monomers (AEMs) in carbon steel corrosive dissolution in 1 M HCl solution was investigated using computational and experimental techniques.![]()
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Affiliation(s)
- Omar Dagdag
- Laboratory of Agroresources
- Polymers and Process Engineering (LAPPE)
- Department of Chemistry
- Faculty of Science
- Ibn Tofail University
| | - Zaki Safi
- Al Azhar University-Gaza
- Chemistry Department
- Faculty of Science
- Palestine
| | - Hamid Erramli
- Laboratory of Materials, Electrochemistry and Environment
- Department of Chemistry
- Faculty of Sciences
- Ibn Tofail University
- Kenitra
| | - Omar Cherkaoui
- Higher School of Textile and Clothing Industries
- Laboratory REMTEX
- Casablanca
- Morocco
| | - Nuha Wazzan
- King Abdulaziz University
- Chemistry Department
- Faculty of Science
- Jeddah
- Saudi Arabia
| | - Lei Guo
- School of Materials and Chemical Engineering
- Tongren University
- Tongren
- China
| | - Chandrabhan Verma
- Material Science Innovation & Modelling (MaSIM) Research Focus Area
- Faculty of Natural and Agricultural Sciences
- North-West University
- Mmabatho 2735
- South Africa
| | - E. E. Ebenso
- Material Science Innovation & Modelling (MaSIM) Research Focus Area
- Faculty of Natural and Agricultural Sciences
- North-West University
- Mmabatho 2735
- South Africa
| | - Ahmed El Harfi
- Laboratory of Agroresources
- Polymers and Process Engineering (LAPPE)
- Department of Chemistry
- Faculty of Science
- Ibn Tofail University
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