Hana Ferkous - Academia.edu (original) (raw)

Papers by Hana Ferkous

RSC advances, 2024

This study investigates the corrosion inhibition potential of 3,4-dimethoxy phenyl thiosemicarbaz... more This study investigates the corrosion inhibition potential of 3,4-dimethoxy phenyl thiosemicarbazone (DMPTS) for copper in 1 M hydrochloric acid (HCl) solutions, aiming to disclose the mechanism behind its protective action. Through an integrative methodology encompassing electrochemical analyses-such as weight loss measurements, potentiodynamic polarization, and electrochemical impedance spectroscopy (EIS)-we quantitatively evaluate the corrosion protection efficacy of DMPTS. It was determined that the optimal concentration of DMPTS markedly boosts the corrosion resistance of copper, achieving an impressive inhibition efficiency of up to 89% at 400 ppm. The formation of a protective layer on the copper surface, a critical aspect of DMPTS's inhibitory action, was characterized using Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM). These techniques provided empirical evidence of surface morphology modifications and roughness changes, affirming the formation of a protective barrier against corrosion. A significant advancement in our study was the application of Attenuated Total Reflectance Fourier Transform Infrared (ATR-FTIR) spectroscopy, which identified chemical adsorption as the definitive mechanism of corrosion inhibition by DMPTS. The ATR-FTIR results explicitly demonstrated the specific interactions between DMPTS molecules and the copper surface, indicative of a robust protective adsorbed layer formation. This mechanistic insight, crucial to understanding the inhibitory process, aligns with the protective efficacy observed in electrochemical and surface analyses. Theoretical support, provided by the Quantum Theory of Atoms in Molecules (QTAIM) and quantum chemical computations, further validated the strong molecular interaction between DMPTS and copper, corroborating the experimental findings. Collectively, this research not only confirms the superior corrosion inhibition performance of DMPTS in an acidic setting but also elucidates the chemical adsorption mechanism as the foundation of its action, offering valuable insights for the development of effective corrosion inhibitors in industrial applications.

Journal of environmental chemical engineering, Apr 1, 2024

International Journal of Molecular Sciences, Jan 13, 2024

Energy Conversion and Management, Dec 31, 2023

Process safety and environmental protection/Transactions of the Institution of Chemical Engineers. Part B, Process safety and environmental protection/Chemical engineering research and design/Chemical engineering research & design, May 1, 2024

Materials Today Communications

Environmental science and engineering, 2021

Materials Today Communications

Advances in science, technology & innovation, 2018

Atomic Force Microscopy is undoubtedly the most adaptable and dominant microscopic technology for... more Atomic Force Microscopy is undoubtedly the most adaptable and dominant microscopic technology for studying nanoscale samples.

The Open Corrosion Journal, Feb 27, 2009

Presently Zn-Mg coatings are being developed as a contribution to next generation of galvanized s... more Presently Zn-Mg coatings are being developed as a contribution to next generation of galvanized steel. However, the underlying corrosion mechanism is still under debate. In this paper we show that Raman spectroscopy next to electrochemical methods (linear sweep voltammetry and electrochemical impedance spectroscopy) can successfully be used to help in identifying the corrosion products of Zn-Mg coated galvanized steel (ZMS) when dipped into 3 wt. % NaCl aqueous solution at ambient temperature (25 °C). The obtained results are compared to galvanized steel. This study reveals that in the case of ZMS, Mg is mainly anodically dissolved forming a compact layer of Mg(OH) 2 /MgO and MgCO 3. It is believed that the formation of this compact layer and the insulating properties of MgO, due to its large band gap, are responsible for the increased corrosion resistance of the alloy.

Journal of Molecular Liquids, Jun 1, 2020

This is a PDF file of an article that has undergone enhancements after acceptance, such as the ad... more This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

Polymers, Apr 7, 2022

This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY

Journal of Molecular Structure, 2023

Three nonionic surfactants based on azodye and Schiff base condensed with poly ethylene glycol we... more Three nonionic surfactants based on azodye and Schiff base condensed with poly ethylene glycol were prepared. Their inhibition effect towards corrosion of steel in hydrochloric acid was investigated using electrochemical frequency modulation, electrochemical impedance spectroscopy, potentiodynamic polarization, quantum chemical calculations and molecular dynamic simulation. The data revealed that the prepared surfactants had the ability to inhibit corrosion reaction with good agreement between experimental and computational results. The adsorption of surfactants on the carbon steel surface in 1 M HCl was found to obey Langmuir isotherm. Polarization results showed that these inhibitors act as mixed-type inhibitors.

Environmental science and engineering, 2021

We present electrochemical impedance spectroscopic (EIS) and two-chamber AFM investigations of th... more We present electrochemical impedance spectroscopic (EIS) and two-chamber AFM investigations of the electrical and mechanical properties of solvent-containing nano-BLMs suspended on chip-based nanopores of diameter of 200, 400, and 700 nm. The chips containing nanoporous silicon nitride membranes are fabricated based on low-cost colloidal lithography with low aspect ratio of the nanopores. BLMs of DPhPC lipid molecules are constructed across the nanopores by the painting method. Two equivalent circuits are compared in view of their adequacy in description of the EIS performances of the nano-BLMs and more importantly the structures associated with the nano-BLMs systems. The BLM resistance and capacitance as well as their size and time dependence are studied by EIS. The breakthrough forces, elasticity in terms of apparent spring constant, and lateral tension of the solvent-containing nano-BLMs are investigated by AFM force measurements. The exact relationship of the breakthrough force of the nano-BLM as a function of pore size is revealed. Both EIS and AFM studies show increasing lifetime and mechanical stability of the nano-BLMs with decreasing pore size. Finally, the robust 200 nm diameter nanopores are used to accommodate functional BLMs containing DPhPC lipid molecules and gramicidins by using a painting method with drop of mixture solutions of DPhPC and gramicidins. EIS investigation of the functional nano-BLMs is also performed.

Advances in science, technology & innovation, 2018

Corrosion control of metal, particularly in acidic media, appears to draw a critical importance f... more Corrosion control of metal, particularly in acidic media, appears to draw a critical importance from an economic, environmental and aesthetical prspective.

Environmental science and engineering, 2021

Environmental science and engineering, 2021

Environmental science and engineering, 2021

RSC advances, 2024

This study investigates the corrosion inhibition potential of 3,4-dimethoxy phenyl thiosemicarbaz... more This study investigates the corrosion inhibition potential of 3,4-dimethoxy phenyl thiosemicarbazone (DMPTS) for copper in 1 M hydrochloric acid (HCl) solutions, aiming to disclose the mechanism behind its protective action. Through an integrative methodology encompassing electrochemical analyses-such as weight loss measurements, potentiodynamic polarization, and electrochemical impedance spectroscopy (EIS)-we quantitatively evaluate the corrosion protection efficacy of DMPTS. It was determined that the optimal concentration of DMPTS markedly boosts the corrosion resistance of copper, achieving an impressive inhibition efficiency of up to 89% at 400 ppm. The formation of a protective layer on the copper surface, a critical aspect of DMPTS's inhibitory action, was characterized using Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM). These techniques provided empirical evidence of surface morphology modifications and roughness changes, affirming the formation of a protective barrier against corrosion. A significant advancement in our study was the application of Attenuated Total Reflectance Fourier Transform Infrared (ATR-FTIR) spectroscopy, which identified chemical adsorption as the definitive mechanism of corrosion inhibition by DMPTS. The ATR-FTIR results explicitly demonstrated the specific interactions between DMPTS molecules and the copper surface, indicative of a robust protective adsorbed layer formation. This mechanistic insight, crucial to understanding the inhibitory process, aligns with the protective efficacy observed in electrochemical and surface analyses. Theoretical support, provided by the Quantum Theory of Atoms in Molecules (QTAIM) and quantum chemical computations, further validated the strong molecular interaction between DMPTS and copper, corroborating the experimental findings. Collectively, this research not only confirms the superior corrosion inhibition performance of DMPTS in an acidic setting but also elucidates the chemical adsorption mechanism as the foundation of its action, offering valuable insights for the development of effective corrosion inhibitors in industrial applications.

Journal of environmental chemical engineering, Apr 1, 2024

International Journal of Molecular Sciences, Jan 13, 2024

Energy Conversion and Management, Dec 31, 2023

Process safety and environmental protection/Transactions of the Institution of Chemical Engineers. Part B, Process safety and environmental protection/Chemical engineering research and design/Chemical engineering research & design, May 1, 2024

Materials Today Communications

Environmental science and engineering, 2021

Materials Today Communications

Advances in science, technology & innovation, 2018

Atomic Force Microscopy is undoubtedly the most adaptable and dominant microscopic technology for... more Atomic Force Microscopy is undoubtedly the most adaptable and dominant microscopic technology for studying nanoscale samples.

The Open Corrosion Journal, Feb 27, 2009

Presently Zn-Mg coatings are being developed as a contribution to next generation of galvanized s... more Presently Zn-Mg coatings are being developed as a contribution to next generation of galvanized steel. However, the underlying corrosion mechanism is still under debate. In this paper we show that Raman spectroscopy next to electrochemical methods (linear sweep voltammetry and electrochemical impedance spectroscopy) can successfully be used to help in identifying the corrosion products of Zn-Mg coated galvanized steel (ZMS) when dipped into 3 wt. % NaCl aqueous solution at ambient temperature (25 °C). The obtained results are compared to galvanized steel. This study reveals that in the case of ZMS, Mg is mainly anodically dissolved forming a compact layer of Mg(OH) 2 /MgO and MgCO 3. It is believed that the formation of this compact layer and the insulating properties of MgO, due to its large band gap, are responsible for the increased corrosion resistance of the alloy.

Journal of Molecular Liquids, Jun 1, 2020

This is a PDF file of an article that has undergone enhancements after acceptance, such as the ad... more This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

Polymers, Apr 7, 2022

This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY

Journal of Molecular Structure, 2023

Three nonionic surfactants based on azodye and Schiff base condensed with poly ethylene glycol we... more Three nonionic surfactants based on azodye and Schiff base condensed with poly ethylene glycol were prepared. Their inhibition effect towards corrosion of steel in hydrochloric acid was investigated using electrochemical frequency modulation, electrochemical impedance spectroscopy, potentiodynamic polarization, quantum chemical calculations and molecular dynamic simulation. The data revealed that the prepared surfactants had the ability to inhibit corrosion reaction with good agreement between experimental and computational results. The adsorption of surfactants on the carbon steel surface in 1 M HCl was found to obey Langmuir isotherm. Polarization results showed that these inhibitors act as mixed-type inhibitors.

Environmental science and engineering, 2021

We present electrochemical impedance spectroscopic (EIS) and two-chamber AFM investigations of th... more We present electrochemical impedance spectroscopic (EIS) and two-chamber AFM investigations of the electrical and mechanical properties of solvent-containing nano-BLMs suspended on chip-based nanopores of diameter of 200, 400, and 700 nm. The chips containing nanoporous silicon nitride membranes are fabricated based on low-cost colloidal lithography with low aspect ratio of the nanopores. BLMs of DPhPC lipid molecules are constructed across the nanopores by the painting method. Two equivalent circuits are compared in view of their adequacy in description of the EIS performances of the nano-BLMs and more importantly the structures associated with the nano-BLMs systems. The BLM resistance and capacitance as well as their size and time dependence are studied by EIS. The breakthrough forces, elasticity in terms of apparent spring constant, and lateral tension of the solvent-containing nano-BLMs are investigated by AFM force measurements. The exact relationship of the breakthrough force of the nano-BLM as a function of pore size is revealed. Both EIS and AFM studies show increasing lifetime and mechanical stability of the nano-BLMs with decreasing pore size. Finally, the robust 200 nm diameter nanopores are used to accommodate functional BLMs containing DPhPC lipid molecules and gramicidins by using a painting method with drop of mixture solutions of DPhPC and gramicidins. EIS investigation of the functional nano-BLMs is also performed.

Advances in science, technology & innovation, 2018

Corrosion control of metal, particularly in acidic media, appears to draw a critical importance f... more Corrosion control of metal, particularly in acidic media, appears to draw a critical importance from an economic, environmental and aesthetical prspective.

Environmental science and engineering, 2021

Environmental science and engineering, 2021

Environmental science and engineering, 2021