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A. Zarrouk - One of the best experts on this subject based on the ideXlab platform.
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synthesis antibacterial study and corrosion inhibition potential of newly synthesis oxathiolan and triazole derivatives of 8 Hydroxyquinoline experimental and theoretical approach
Surfaces and Interfaces, 2020Co-Authors: M Rbaa, B. Lakhrissi, I. Warad, Asharf S Abousalem, Z Rouifi, R Benkaddour, Parul Dohare, M Lakhrissi, A. ZarroukAbstract:Abstract Present work deals with the synthesis, antibacterial, and anticorrosion studies of novel oxathiolan and triazole compounds based on 8-Hydroxyquinoline derivatives on mild steel in 1.0 M HCl. It is found that these heterocycles based on 8-Hydroxyquinoline substituted compounds act as very good corrosion inhibitors and their inhibition performances influenced by the type of the 8-Hydroxyquinoline substituent used. In order to explore their potential biological activity, the “in vitro” antibacterial activity was investigated against [E. coli (ATCC35218), S. aureus (ATCC29213), V. parahaemolyticus (ATCC17802), and P. aeruginosa (ATCC27853)] using the agar disk diffusion method. The electrochemical behavior of different ratios of novel oxathiolan and triazole compounds based on 8-Hydroxyquinoline derivatives was evaluated by EIS and Potentiodynamic polarization spectroscopy. Quantum chemical calculations (DFT) and Monte Carlo (MC) simulations were used to understand metal inhibitor interactions and the orientation of adsorption of studied inhibitors. Surface morphology and UV–visible spectroscopy (UV–vis) and scanning electron microscope (SEM) of the mild steel have also been studied.
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corrosion protection of carbon steel by two newly synthesized benzimidazol 2 ones substituted 8 Hydroxyquinoline derivatives in 1 m hcl experimental and theoretical study
Surfaces and Interfaces, 2019Co-Authors: M. El Faydy, B. Lakhrissi, I. Warad, A. Zarrouk, M Rbaa, Loubna Lakhrissi, I B ObotAbstract:Abstract Two new organic compounds composed of 8-Hydroxyquinoline and benzimidazol-2-one units have been successfully prepared, and identified by different spectroscopic methods (IR, NMR and Elemental analysis). The synthesized heterocyclic namely 1-((8-hydroxyquinolin-5-yl)methyl)-3-(prop‑1-en-2-yl)-1H-benzimidazol-2(3H)-one (HMPB) and 1,3-bis((8‑hydroxy-quinolin-5-yl)methyl)-1H-benzimidazol-2(3H)-one (BHMB) are assessed as corrosion inhibitors for carbon steel (CS) in 1 M hydrochloric acid media utilizing gravimetric measurements, electrochemical impedance spectroscopy, potentiodynamic polarization and UV − visible spectroscopy at 298 K. The inhibiting action is more pronounced by BHMB compared to HMPB and affected a maximum value of 91% at the 10−3 M attributed to BHMB and 89% achieved by HMPB, the shift in corrosion potentials obtained suggested that the two compounds are cathodic-type inhibitors. The adsorption of benzimidazol-2-ones substituted 8‑hydroxy-quinoline derivatives on the carbon steel surface follows the Langmuir adsorption isotherm and was found to involve chemisorption. The EIS spectra expressed principally as a slightly depressed semi-circle shape corresponding to a single time constant in Bode diagrams for the two organic compounds in the both concentration and temperature effects. In addition, all thermodynamic parameters such as Δ G a d s ∘ Ea, ΔSa and ΔHa were estimated and discussed. Finally, the combination of density functional theory (DFT) and Monte Carlo simulations were used to understand the regions in the BHMB and HMPB molecules where interaction with steel surface can occur.
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two new 8 Hydroxyquinoline derivatives as an efficient corrosion inhibitors for mild steel in hydrochloric acid synthesis electrochemical surface morphological uv visible and theoretical studies
Journal of Molecular Liquids, 2019Co-Authors: M Rbaa, B. Lakhrissi, I. Warad, F Benhiba, I B Obot, H Oudda, A. ZarroukAbstract:Abstract The novel heterocyclic compounds, mainly based on the 8-Hydroxyquinoline moiety, namely (8-hydroxyquinolin-5-yl) methyl-4-chlorobenzoate Q1 and (8-hydroxyquinolin-5-yl) methyl-4-nitrobenzoate Q2 have been synthesized and identified through different spectroscopic methods (FTIR, 1H, 13C NMR, and Elemental analysis (EA)). Q1 and Q2 were estimated as corrosion inhibitors of mild steel (MS) in the aggressive environment (1 M HCl) utilizing a weight technique (weight loss measurements) and the non-weight techniques (electrochemical techniques), Density Functional Theory (DFT) and Monte Carlo Simulations (MC). However, to better gather information on bonding mechanism of MS surface/inhibitors/1 M HCl medium, the corrosion protection was once also investigated with the aid of ultraviolet-visible spectrophotometry (UV–Vis). Surface studies (SEM) revealed that the HCl medium protected by Q1 and Q2 could prevent the surface damage and decrease the roughness. The results clearly exhibit that the inhibition performance (η %) will increase with an increase in the concentration of Q1 and Q2 achieves maximum value of 96% (Q1) and 92% (Q1) at optimal concentration (10−3 M). Withal, potentiodynamic polarization test results exhibited the influence of Q1 and Q2 on both anodic and cathodic reactions suppression. Inhibitors formed protective layers on metal surface through adsorption as per Langmuir model. The metal dissolution and inhibitor adsorption phenomena have been studied through the estimation of thermodynamic parameters. DFT calculations and MC simulations were exploited to describe the electronic and adsorption properties of Q1 and Q2. The records of both techniques supported the experimental findings.
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In situ synthesis, electrochemical, surface morphological, UV-visible, DFT and Monte Carlo simulations of novel 5-substituted-8-Hydroxyquinoline for corrosion protection of carbon steel in a hydrochloric acid solution
Journal of Molecular Liquids, 2019Co-Authors: M. El Faydy, B. Lakhrissi, A. Guenbour, S. Kaya, F. Bentiss, I. Warad, A. ZarroukAbstract:Two new organic compounds based on 8-Hydroxyquinoline have been successfully synthesized, and characterized by FT-IR, 1H, C-13 NMR and Elemental analysis. The synthesized compounds namely tert-butyl((8-hydroxyquinolin-5-yl)-methyl)-carbamate (BHQC) and Ethyl 3-(((8-hydroxyquinolin-5-yl)-methyl)-amino)-3-oxopropanoate (EHQP) are evaluated as corrosion inhibitors for carbon steel (CS) in 1 M HCl solution using electrochemical techniques, UV - visible and SEM at 298 K. Electrochemical measurements showed that these organic compounds are mixed type inhibitors. The adsorption of both inhibitors on the carbon steel surface followed Langmuir adsorption isotherm. Furthermore, DFT calculations and Monte Carlo simulation were performed to theoretically establish the relationship between molecular structure and inhibition efficiency.
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Corrosion inhibition performance of newly synthesized 5-alkoxymethyl-8-Hydroxyquinoline derivatives for carbon steel in 1 M HCl solution: experimental, DFT and Monte Carlo simulation studies
Physical Chemistry Chemical Physics, 2018Co-Authors: M. El Faydy, B. Lakhrissi, A. Zarrouk, Lukman Olasunkanmi, Eno Ebenso, R. Touir, M. Ebn Touhami, C. Jama, F. BentissAbstract:Three new organic compounds primarily based on 8-Hydroxyquinoline have been successfully synthesized and characterized via different spectroscopic methods (FTIR, H-1, and C-13 NMR). The synthesized compounds, namely 5-propoxymethyl-8-Hydroxyquinoline (PMHQ), 5-methoxymethyl-8-Hydroxyquinoline (MMHQ) and 5-hydroxymethyl-8-Hydroxyquinoline (HMHQ), were evaluated as corrosion inhibitors for carbon steel in 1 M HCl solution using electrochemical impedance spectroscopy, potentiodynamic polarization and weight loss measurements at 298 K. Electrochemical measurements confirmed that the newly synthesized 5-alkoxymethyl-8-Hydroxyquinoline derivatives are mixed type corrosion inhibitors and confirmed maximum protection efficiencies of 94, 89 and 81% for PMHQ, MMHQ, and HMHQ, respectively, at the optimum concentration of 10(-3) M. The EIS spectra confirmed a slightly depressed semi-circle profile with a single time constant in Bode diagrams for the three organic compounds over the whole concentration and temperature ranges studied. The adsorption of PMHQ, MMHQ, and HMHQ on the carbon steel surface followed the Langmuir adsorption isotherm. In addition, the kinetic and thermodynamic parameters for carbon steel corrosion and inhibitor adsorption, respectively, were determined and discussed. Scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) analyses supported the formation of a protective film on carbon steel in the presence of PMHQ, MMHQ, and HMHQ. Density functional theory calculations (DFT) showed that the effectiveness of the inhibitive actions of the studied compounds correlates well with their electron donating ability, whilst Monte Carlo simulations revealed that the extent and favourability of adsorption of inhibitor molecules on the carbon steel surface establish their corrosion inhibition performances.
Shuli You - One of the best experts on this subject based on the ideXlab platform.
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iridium catalyzed intramolecular asymmetric allylic alkylation of Hydroxyquinolines simultaneous weakening of the aromaticity of two consecutive aromatic rings
Journal of the American Chemical Society, 2018Co-Authors: Zepeng Yang, Ru Jiang, Chao Zheng, Shuli YouAbstract:Intramolecular asymmetric allylic alkylation reactions of 5- and 7-Hydroxyquinoline derivatives were realized by a chiral Ir/NHC catalyst. A series of functionalized cyclic enones were afforded in excellent yields (up to 99%) and high enantioselectivity (up to 97% ee). Theoretical computations revealed that the aromaticity of the two consecutive rings of Hydroxyquinoline substrates is significantly weakened. A highly efficient formal synthesis of (−)-gephyrotoxin was accomplished based on this method.
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Iridium-Catalyzed Intramolecular Asymmetric Allylic Alkylation of Hydroxyquinolines: Simultaneous Weakening of the Aromaticity of Two Consecutive Aromatic Rings
2018Co-Authors: Zepeng Yang, Ru Jiang, Chao Zheng, Shuli YouAbstract:Intramolecular asymmetric allylic alkylation reactions of 5- and 7-Hydroxyquinoline derivatives were realized by a chiral Ir/NHC catalyst. A series of functionalized cyclic enones were afforded in excellent yields (up to 99%) and high enantioselectivity (up to 97% ee). Theoretical computations revealed that the aromaticity of the two consecutive rings of Hydroxyquinoline substrates is significantly weakened. A highly efficient formal synthesis of (−)-gephyrotoxin was accomplished based on this method
F. Bentiss - One of the best experts on this subject based on the ideXlab platform.
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Electrochemical, surface and computational studies on the inhibition performance of some newly synthesized 8-Hydroxyquinoline derivatives containing benzimidazole moiety against the corrosion of carbon steel in phosphoric acid environment
Journal of Materials Research and Technology, 2020Co-Authors: M. El Faydy, B. Lakhrissi, Charafeddine Jama, Abdelkader Zarrouk, Lukman Olasunkanmi, Eno Ebenso, F. BentissAbstract:Four new 8-Hydroxyquinoline derivatives, namely 5-((1H-benzimidazol-2-yl)methyl)quinolin-8-ol (BIMQ), 5-((5-methyl-1H-benzimidazol-2-yl)methyl)quinolin-8-ol (MBMQ), 5-((5-chloro-1H-benzimidazol-2-yl)methyl)quinolin-8-ol (CBMQ) and 5-((5,6-dichloro-1H-benzimidazol-2-yl)methyl)quinolin-8-ol (DCBMQ) were prepared in moderate to good yields through the condensation of 5-(carboxymethyl)-8-Hydroxyquinoline and substituted o-phenylenediamine. H-1, C-13 NMR and elemental analysis confirm the formation of the desired compounds. The anti-corrosive potential of these heterocyclic compounds has been studied on carbon steel in 2M phosphoric acid (H3PO4) electrolyte by means of electrochemical measurements. The inhibition efficiency of these heterocyclic compounds was strongly linked to the concentration and the structure of the molecules; reached a maximum of 94.7% for DCBMQ at 10(-3) M. Data generated from potentiodynamic revealed that the investigated 8-Hydroxyquinoline derivatives are mixed type inhibitors. The influence of temperature on the corrosion behaviour was assessed. The four quinoline derivatives adsorbed according to the Langmuir's adsorption isotherm. Surface analysis (SEM and XPS) confirmed the formation of a protective layer adsorbed on the steel surface. DFT calculations suggested that 8-Hydroxyquinoline derivatives adsorb on the metal via the 8-Hydroxyquinoline ring and their corrosion inhibition potential have some linear correlation with the degree of co-planarity of the benzimidazole and Hydroxyquinoline rings. Monte Carlo simulations showed that the molecules adsorbed on Fe(1 1 0) surface through the 8-Hydroxyquinoline in a near-flat mode and the adsorption energies both in the absence and presence of aqueous phosphate ions agree with the observed trends of inhibition efficiencies. (C) 2019 The Authors. Published by Elsevier B.V.
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In situ synthesis, electrochemical, surface morphological, UV-visible, DFT and Monte Carlo simulations of novel 5-substituted-8-Hydroxyquinoline for corrosion protection of carbon steel in a hydrochloric acid solution
Journal of Molecular Liquids, 2019Co-Authors: M. El Faydy, B. Lakhrissi, A. Guenbour, S. Kaya, F. Bentiss, I. Warad, A. ZarroukAbstract:Two new organic compounds based on 8-Hydroxyquinoline have been successfully synthesized, and characterized by FT-IR, 1H, C-13 NMR and Elemental analysis. The synthesized compounds namely tert-butyl((8-hydroxyquinolin-5-yl)-methyl)-carbamate (BHQC) and Ethyl 3-(((8-hydroxyquinolin-5-yl)-methyl)-amino)-3-oxopropanoate (EHQP) are evaluated as corrosion inhibitors for carbon steel (CS) in 1 M HCl solution using electrochemical techniques, UV - visible and SEM at 298 K. Electrochemical measurements showed that these organic compounds are mixed type inhibitors. The adsorption of both inhibitors on the carbon steel surface followed Langmuir adsorption isotherm. Furthermore, DFT calculations and Monte Carlo simulation were performed to theoretically establish the relationship between molecular structure and inhibition efficiency.
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Corrosion inhibition performance of newly synthesized 5-alkoxymethyl-8-Hydroxyquinoline derivatives for carbon steel in 1 M HCl solution: experimental, DFT and Monte Carlo simulation studies
Physical Chemistry Chemical Physics, 2018Co-Authors: M. El Faydy, B. Lakhrissi, A. Zarrouk, Lukman Olasunkanmi, Eno Ebenso, R. Touir, M. Ebn Touhami, C. Jama, F. BentissAbstract:Three new organic compounds primarily based on 8-Hydroxyquinoline have been successfully synthesized and characterized via different spectroscopic methods (FTIR, H-1, and C-13 NMR). The synthesized compounds, namely 5-propoxymethyl-8-Hydroxyquinoline (PMHQ), 5-methoxymethyl-8-Hydroxyquinoline (MMHQ) and 5-hydroxymethyl-8-Hydroxyquinoline (HMHQ), were evaluated as corrosion inhibitors for carbon steel in 1 M HCl solution using electrochemical impedance spectroscopy, potentiodynamic polarization and weight loss measurements at 298 K. Electrochemical measurements confirmed that the newly synthesized 5-alkoxymethyl-8-Hydroxyquinoline derivatives are mixed type corrosion inhibitors and confirmed maximum protection efficiencies of 94, 89 and 81% for PMHQ, MMHQ, and HMHQ, respectively, at the optimum concentration of 10(-3) M. The EIS spectra confirmed a slightly depressed semi-circle profile with a single time constant in Bode diagrams for the three organic compounds over the whole concentration and temperature ranges studied. The adsorption of PMHQ, MMHQ, and HMHQ on the carbon steel surface followed the Langmuir adsorption isotherm. In addition, the kinetic and thermodynamic parameters for carbon steel corrosion and inhibitor adsorption, respectively, were determined and discussed. Scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) analyses supported the formation of a protective film on carbon steel in the presence of PMHQ, MMHQ, and HMHQ. Density functional theory calculations (DFT) showed that the effectiveness of the inhibitive actions of the studied compounds correlates well with their electron donating ability, whilst Monte Carlo simulations revealed that the extent and favourability of adsorption of inhibitor molecules on the carbon steel surface establish their corrosion inhibition performances.
M. El Faydy - One of the best experts on this subject based on the ideXlab platform.
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Electrochemical, surface and computational studies on the inhibition performance of some newly synthesized 8-Hydroxyquinoline derivatives containing benzimidazole moiety against the corrosion of carbon steel in phosphoric acid environment
Journal of Materials Research and Technology, 2020Co-Authors: M. El Faydy, B. Lakhrissi, Charafeddine Jama, Abdelkader Zarrouk, Lukman Olasunkanmi, Eno Ebenso, F. BentissAbstract:Four new 8-Hydroxyquinoline derivatives, namely 5-((1H-benzimidazol-2-yl)methyl)quinolin-8-ol (BIMQ), 5-((5-methyl-1H-benzimidazol-2-yl)methyl)quinolin-8-ol (MBMQ), 5-((5-chloro-1H-benzimidazol-2-yl)methyl)quinolin-8-ol (CBMQ) and 5-((5,6-dichloro-1H-benzimidazol-2-yl)methyl)quinolin-8-ol (DCBMQ) were prepared in moderate to good yields through the condensation of 5-(carboxymethyl)-8-Hydroxyquinoline and substituted o-phenylenediamine. H-1, C-13 NMR and elemental analysis confirm the formation of the desired compounds. The anti-corrosive potential of these heterocyclic compounds has been studied on carbon steel in 2M phosphoric acid (H3PO4) electrolyte by means of electrochemical measurements. The inhibition efficiency of these heterocyclic compounds was strongly linked to the concentration and the structure of the molecules; reached a maximum of 94.7% for DCBMQ at 10(-3) M. Data generated from potentiodynamic revealed that the investigated 8-Hydroxyquinoline derivatives are mixed type inhibitors. The influence of temperature on the corrosion behaviour was assessed. The four quinoline derivatives adsorbed according to the Langmuir's adsorption isotherm. Surface analysis (SEM and XPS) confirmed the formation of a protective layer adsorbed on the steel surface. DFT calculations suggested that 8-Hydroxyquinoline derivatives adsorb on the metal via the 8-Hydroxyquinoline ring and their corrosion inhibition potential have some linear correlation with the degree of co-planarity of the benzimidazole and Hydroxyquinoline rings. Monte Carlo simulations showed that the molecules adsorbed on Fe(1 1 0) surface through the 8-Hydroxyquinoline in a near-flat mode and the adsorption energies both in the absence and presence of aqueous phosphate ions agree with the observed trends of inhibition efficiencies. (C) 2019 The Authors. Published by Elsevier B.V.
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corrosion protection of carbon steel by two newly synthesized benzimidazol 2 ones substituted 8 Hydroxyquinoline derivatives in 1 m hcl experimental and theoretical study
Surfaces and Interfaces, 2019Co-Authors: M. El Faydy, B. Lakhrissi, I. Warad, A. Zarrouk, M Rbaa, Loubna Lakhrissi, I B ObotAbstract:Abstract Two new organic compounds composed of 8-Hydroxyquinoline and benzimidazol-2-one units have been successfully prepared, and identified by different spectroscopic methods (IR, NMR and Elemental analysis). The synthesized heterocyclic namely 1-((8-hydroxyquinolin-5-yl)methyl)-3-(prop‑1-en-2-yl)-1H-benzimidazol-2(3H)-one (HMPB) and 1,3-bis((8‑hydroxy-quinolin-5-yl)methyl)-1H-benzimidazol-2(3H)-one (BHMB) are assessed as corrosion inhibitors for carbon steel (CS) in 1 M hydrochloric acid media utilizing gravimetric measurements, electrochemical impedance spectroscopy, potentiodynamic polarization and UV − visible spectroscopy at 298 K. The inhibiting action is more pronounced by BHMB compared to HMPB and affected a maximum value of 91% at the 10−3 M attributed to BHMB and 89% achieved by HMPB, the shift in corrosion potentials obtained suggested that the two compounds are cathodic-type inhibitors. The adsorption of benzimidazol-2-ones substituted 8‑hydroxy-quinoline derivatives on the carbon steel surface follows the Langmuir adsorption isotherm and was found to involve chemisorption. The EIS spectra expressed principally as a slightly depressed semi-circle shape corresponding to a single time constant in Bode diagrams for the two organic compounds in the both concentration and temperature effects. In addition, all thermodynamic parameters such as Δ G a d s ∘ Ea, ΔSa and ΔHa were estimated and discussed. Finally, the combination of density functional theory (DFT) and Monte Carlo simulations were used to understand the regions in the BHMB and HMPB molecules where interaction with steel surface can occur.
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In situ synthesis, electrochemical, surface morphological, UV-visible, DFT and Monte Carlo simulations of novel 5-substituted-8-Hydroxyquinoline for corrosion protection of carbon steel in a hydrochloric acid solution
Journal of Molecular Liquids, 2019Co-Authors: M. El Faydy, B. Lakhrissi, A. Guenbour, S. Kaya, F. Bentiss, I. Warad, A. ZarroukAbstract:Two new organic compounds based on 8-Hydroxyquinoline have been successfully synthesized, and characterized by FT-IR, 1H, C-13 NMR and Elemental analysis. The synthesized compounds namely tert-butyl((8-hydroxyquinolin-5-yl)-methyl)-carbamate (BHQC) and Ethyl 3-(((8-hydroxyquinolin-5-yl)-methyl)-amino)-3-oxopropanoate (EHQP) are evaluated as corrosion inhibitors for carbon steel (CS) in 1 M HCl solution using electrochemical techniques, UV - visible and SEM at 298 K. Electrochemical measurements showed that these organic compounds are mixed type inhibitors. The adsorption of both inhibitors on the carbon steel surface followed Langmuir adsorption isotherm. Furthermore, DFT calculations and Monte Carlo simulation were performed to theoretically establish the relationship between molecular structure and inhibition efficiency.
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Corrosion inhibition performance of newly synthesized 5-alkoxymethyl-8-Hydroxyquinoline derivatives for carbon steel in 1 M HCl solution: experimental, DFT and Monte Carlo simulation studies
Physical Chemistry Chemical Physics, 2018Co-Authors: M. El Faydy, B. Lakhrissi, A. Zarrouk, Lukman Olasunkanmi, Eno Ebenso, R. Touir, M. Ebn Touhami, C. Jama, F. BentissAbstract:Three new organic compounds primarily based on 8-Hydroxyquinoline have been successfully synthesized and characterized via different spectroscopic methods (FTIR, H-1, and C-13 NMR). The synthesized compounds, namely 5-propoxymethyl-8-Hydroxyquinoline (PMHQ), 5-methoxymethyl-8-Hydroxyquinoline (MMHQ) and 5-hydroxymethyl-8-Hydroxyquinoline (HMHQ), were evaluated as corrosion inhibitors for carbon steel in 1 M HCl solution using electrochemical impedance spectroscopy, potentiodynamic polarization and weight loss measurements at 298 K. Electrochemical measurements confirmed that the newly synthesized 5-alkoxymethyl-8-Hydroxyquinoline derivatives are mixed type corrosion inhibitors and confirmed maximum protection efficiencies of 94, 89 and 81% for PMHQ, MMHQ, and HMHQ, respectively, at the optimum concentration of 10(-3) M. The EIS spectra confirmed a slightly depressed semi-circle profile with a single time constant in Bode diagrams for the three organic compounds over the whole concentration and temperature ranges studied. The adsorption of PMHQ, MMHQ, and HMHQ on the carbon steel surface followed the Langmuir adsorption isotherm. In addition, the kinetic and thermodynamic parameters for carbon steel corrosion and inhibitor adsorption, respectively, were determined and discussed. Scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) analyses supported the formation of a protective film on carbon steel in the presence of PMHQ, MMHQ, and HMHQ. Density functional theory calculations (DFT) showed that the effectiveness of the inhibitive actions of the studied compounds correlates well with their electron donating ability, whilst Monte Carlo simulations revealed that the extent and favourability of adsorption of inhibitor molecules on the carbon steel surface establish their corrosion inhibition performances.
B. Lakhrissi - One of the best experts on this subject based on the ideXlab platform.
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synthesis antibacterial study and corrosion inhibition potential of newly synthesis oxathiolan and triazole derivatives of 8 Hydroxyquinoline experimental and theoretical approach
Surfaces and Interfaces, 2020Co-Authors: M Rbaa, B. Lakhrissi, I. Warad, Asharf S Abousalem, Z Rouifi, R Benkaddour, Parul Dohare, M Lakhrissi, A. ZarroukAbstract:Abstract Present work deals with the synthesis, antibacterial, and anticorrosion studies of novel oxathiolan and triazole compounds based on 8-Hydroxyquinoline derivatives on mild steel in 1.0 M HCl. It is found that these heterocycles based on 8-Hydroxyquinoline substituted compounds act as very good corrosion inhibitors and their inhibition performances influenced by the type of the 8-Hydroxyquinoline substituent used. In order to explore their potential biological activity, the “in vitro” antibacterial activity was investigated against [E. coli (ATCC35218), S. aureus (ATCC29213), V. parahaemolyticus (ATCC17802), and P. aeruginosa (ATCC27853)] using the agar disk diffusion method. The electrochemical behavior of different ratios of novel oxathiolan and triazole compounds based on 8-Hydroxyquinoline derivatives was evaluated by EIS and Potentiodynamic polarization spectroscopy. Quantum chemical calculations (DFT) and Monte Carlo (MC) simulations were used to understand metal inhibitor interactions and the orientation of adsorption of studied inhibitors. Surface morphology and UV–visible spectroscopy (UV–vis) and scanning electron microscope (SEM) of the mild steel have also been studied.
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Electrochemical, surface and computational studies on the inhibition performance of some newly synthesized 8-Hydroxyquinoline derivatives containing benzimidazole moiety against the corrosion of carbon steel in phosphoric acid environment
Journal of Materials Research and Technology, 2020Co-Authors: M. El Faydy, B. Lakhrissi, Charafeddine Jama, Abdelkader Zarrouk, Lukman Olasunkanmi, Eno Ebenso, F. BentissAbstract:Four new 8-Hydroxyquinoline derivatives, namely 5-((1H-benzimidazol-2-yl)methyl)quinolin-8-ol (BIMQ), 5-((5-methyl-1H-benzimidazol-2-yl)methyl)quinolin-8-ol (MBMQ), 5-((5-chloro-1H-benzimidazol-2-yl)methyl)quinolin-8-ol (CBMQ) and 5-((5,6-dichloro-1H-benzimidazol-2-yl)methyl)quinolin-8-ol (DCBMQ) were prepared in moderate to good yields through the condensation of 5-(carboxymethyl)-8-Hydroxyquinoline and substituted o-phenylenediamine. H-1, C-13 NMR and elemental analysis confirm the formation of the desired compounds. The anti-corrosive potential of these heterocyclic compounds has been studied on carbon steel in 2M phosphoric acid (H3PO4) electrolyte by means of electrochemical measurements. The inhibition efficiency of these heterocyclic compounds was strongly linked to the concentration and the structure of the molecules; reached a maximum of 94.7% for DCBMQ at 10(-3) M. Data generated from potentiodynamic revealed that the investigated 8-Hydroxyquinoline derivatives are mixed type inhibitors. The influence of temperature on the corrosion behaviour was assessed. The four quinoline derivatives adsorbed according to the Langmuir's adsorption isotherm. Surface analysis (SEM and XPS) confirmed the formation of a protective layer adsorbed on the steel surface. DFT calculations suggested that 8-Hydroxyquinoline derivatives adsorb on the metal via the 8-Hydroxyquinoline ring and their corrosion inhibition potential have some linear correlation with the degree of co-planarity of the benzimidazole and Hydroxyquinoline rings. Monte Carlo simulations showed that the molecules adsorbed on Fe(1 1 0) surface through the 8-Hydroxyquinoline in a near-flat mode and the adsorption energies both in the absence and presence of aqueous phosphate ions agree with the observed trends of inhibition efficiencies. (C) 2019 The Authors. Published by Elsevier B.V.
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corrosion protection of carbon steel by two newly synthesized benzimidazol 2 ones substituted 8 Hydroxyquinoline derivatives in 1 m hcl experimental and theoretical study
Surfaces and Interfaces, 2019Co-Authors: M. El Faydy, B. Lakhrissi, I. Warad, A. Zarrouk, M Rbaa, Loubna Lakhrissi, I B ObotAbstract:Abstract Two new organic compounds composed of 8-Hydroxyquinoline and benzimidazol-2-one units have been successfully prepared, and identified by different spectroscopic methods (IR, NMR and Elemental analysis). The synthesized heterocyclic namely 1-((8-hydroxyquinolin-5-yl)methyl)-3-(prop‑1-en-2-yl)-1H-benzimidazol-2(3H)-one (HMPB) and 1,3-bis((8‑hydroxy-quinolin-5-yl)methyl)-1H-benzimidazol-2(3H)-one (BHMB) are assessed as corrosion inhibitors for carbon steel (CS) in 1 M hydrochloric acid media utilizing gravimetric measurements, electrochemical impedance spectroscopy, potentiodynamic polarization and UV − visible spectroscopy at 298 K. The inhibiting action is more pronounced by BHMB compared to HMPB and affected a maximum value of 91% at the 10−3 M attributed to BHMB and 89% achieved by HMPB, the shift in corrosion potentials obtained suggested that the two compounds are cathodic-type inhibitors. The adsorption of benzimidazol-2-ones substituted 8‑hydroxy-quinoline derivatives on the carbon steel surface follows the Langmuir adsorption isotherm and was found to involve chemisorption. The EIS spectra expressed principally as a slightly depressed semi-circle shape corresponding to a single time constant in Bode diagrams for the two organic compounds in the both concentration and temperature effects. In addition, all thermodynamic parameters such as Δ G a d s ∘ Ea, ΔSa and ΔHa were estimated and discussed. Finally, the combination of density functional theory (DFT) and Monte Carlo simulations were used to understand the regions in the BHMB and HMPB molecules where interaction with steel surface can occur.
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two new 8 Hydroxyquinoline derivatives as an efficient corrosion inhibitors for mild steel in hydrochloric acid synthesis electrochemical surface morphological uv visible and theoretical studies
Journal of Molecular Liquids, 2019Co-Authors: M Rbaa, B. Lakhrissi, I. Warad, F Benhiba, I B Obot, H Oudda, A. ZarroukAbstract:Abstract The novel heterocyclic compounds, mainly based on the 8-Hydroxyquinoline moiety, namely (8-hydroxyquinolin-5-yl) methyl-4-chlorobenzoate Q1 and (8-hydroxyquinolin-5-yl) methyl-4-nitrobenzoate Q2 have been synthesized and identified through different spectroscopic methods (FTIR, 1H, 13C NMR, and Elemental analysis (EA)). Q1 and Q2 were estimated as corrosion inhibitors of mild steel (MS) in the aggressive environment (1 M HCl) utilizing a weight technique (weight loss measurements) and the non-weight techniques (electrochemical techniques), Density Functional Theory (DFT) and Monte Carlo Simulations (MC). However, to better gather information on bonding mechanism of MS surface/inhibitors/1 M HCl medium, the corrosion protection was once also investigated with the aid of ultraviolet-visible spectrophotometry (UV–Vis). Surface studies (SEM) revealed that the HCl medium protected by Q1 and Q2 could prevent the surface damage and decrease the roughness. The results clearly exhibit that the inhibition performance (η %) will increase with an increase in the concentration of Q1 and Q2 achieves maximum value of 96% (Q1) and 92% (Q1) at optimal concentration (10−3 M). Withal, potentiodynamic polarization test results exhibited the influence of Q1 and Q2 on both anodic and cathodic reactions suppression. Inhibitors formed protective layers on metal surface through adsorption as per Langmuir model. The metal dissolution and inhibitor adsorption phenomena have been studied through the estimation of thermodynamic parameters. DFT calculations and MC simulations were exploited to describe the electronic and adsorption properties of Q1 and Q2. The records of both techniques supported the experimental findings.
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In situ synthesis, electrochemical, surface morphological, UV-visible, DFT and Monte Carlo simulations of novel 5-substituted-8-Hydroxyquinoline for corrosion protection of carbon steel in a hydrochloric acid solution
Journal of Molecular Liquids, 2019Co-Authors: M. El Faydy, B. Lakhrissi, A. Guenbour, S. Kaya, F. Bentiss, I. Warad, A. ZarroukAbstract:Two new organic compounds based on 8-Hydroxyquinoline have been successfully synthesized, and characterized by FT-IR, 1H, C-13 NMR and Elemental analysis. The synthesized compounds namely tert-butyl((8-hydroxyquinolin-5-yl)-methyl)-carbamate (BHQC) and Ethyl 3-(((8-hydroxyquinolin-5-yl)-methyl)-amino)-3-oxopropanoate (EHQP) are evaluated as corrosion inhibitors for carbon steel (CS) in 1 M HCl solution using electrochemical techniques, UV - visible and SEM at 298 K. Electrochemical measurements showed that these organic compounds are mixed type inhibitors. The adsorption of both inhibitors on the carbon steel surface followed Langmuir adsorption isotherm. Furthermore, DFT calculations and Monte Carlo simulation were performed to theoretically establish the relationship between molecular structure and inhibition efficiency.
