Coco Monoethanolamide Surfactant as a Sustainable Corrosion Inhibitor for Mild Steel: Theoretical and Experimental Investigations
Recent studies indicate that surfactants are a relatively new and effective class of corrosion inhibitors that almost entirely meet the criteria for a chemical to be used as an aqueous phase corrosion inhibitor. They possess the ideal hydrophilicity to hydrophobicity ratio, which is crucial for effe...
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MDPI AG
2023-02-01
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| Online Access: | https://www.mdpi.com/1420-3049/28/4/1581 |
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| author | Richika Ganjoo Shveta Sharma Praveen K. Sharma O. Dagdag Avni Berisha Eno E. Ebenso Ashish Kumar Chandrabhan Verma |
| author_facet | Richika Ganjoo Shveta Sharma Praveen K. Sharma O. Dagdag Avni Berisha Eno E. Ebenso Ashish Kumar Chandrabhan Verma |
| author_sort | Richika Ganjoo |
| collection | DOAJ |
| description | Recent studies indicate that surfactants are a relatively new and effective class of corrosion inhibitors that almost entirely meet the criteria for a chemical to be used as an aqueous phase corrosion inhibitor. They possess the ideal hydrophilicity to hydrophobicity ratio, which is crucial for effective interfacial interactions. In this study, a coconut-based non-ionic surfactant, namely, coco monoethanolamide (CMEA), was investigated for corrosion inhibition behaviour against mild steel (MS) in 1 M HCl employing the experimental and computational techniques. The surface morphology was studied employing the scanning electron microscope (SEM), atomic force microscope (AFM), and contact measurements. The critical micelle concentration (CMC) was evaluated to be 0.556 mM and the surface tension corresponding to the CMC was 65.28 mN/m. CMEA manifests the best inhibition efficiency (η%) of 99.01% at 0.6163 mM (at 60 °C). CMEA performs as a mixed-type inhibitor and its adsorption at the MS/1 M HCl interface followed the Langmuir isotherm. The theoretical findings from density functional theory (DFT), Monte Carlo (MC), and molecular dynamics (MD) simulations accorded with the experimental findings. The MC simulation’s assessment of CMEA’s high adsorption energy (−185 Kcal/mol) proved that the CMEA efficiently and spontaneously adsorbs at the interface. |
| first_indexed | 2024-03-11T08:22:23Z |
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| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-11T08:22:23Z |
| publishDate | 2023-02-01 |
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| spelling | doaj.art-8f0ba85c9c73456c9a175bfbf8e092d12023-11-16T22:20:28ZengMDPI AGMolecules1420-30492023-02-01284158110.3390/molecules28041581Coco Monoethanolamide Surfactant as a Sustainable Corrosion Inhibitor for Mild Steel: Theoretical and Experimental InvestigationsRichika Ganjoo0Shveta Sharma1Praveen K. Sharma2O. Dagdag3Avni Berisha4Eno E. Ebenso5Ashish Kumar6Chandrabhan Verma7Department of Chemistry, School of Chemical Engineering and Physical Sciences, Lovely Professional University, Phagwara 144402, IndiaDepartment of Chemistry, School of Chemical Engineering and Physical Sciences, Lovely Professional University, Phagwara 144402, IndiaDepartment of Chemistry, School of Chemical Engineering and Physical Sciences, Lovely Professional University, Phagwara 144402, IndiaCentre for Materials Science, College of Science, Engineering and Technology, University of South Africa, Johannesburg 1710, South AfricaDepartment of Chemistry, Faculty of Natural and Mathematics Science, University of Prishtina, 10000 Prishtina, KosovoCentre for Materials Science, College of Science, Engineering and Technology, University of South Africa, Johannesburg 1710, South AfricaNCE, Department of Science and Technology, Government of Bihar, Patna 803108, IndiaInterdisciplinary Research Center for Advanced Materials, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi ArabiaRecent studies indicate that surfactants are a relatively new and effective class of corrosion inhibitors that almost entirely meet the criteria for a chemical to be used as an aqueous phase corrosion inhibitor. They possess the ideal hydrophilicity to hydrophobicity ratio, which is crucial for effective interfacial interactions. In this study, a coconut-based non-ionic surfactant, namely, coco monoethanolamide (CMEA), was investigated for corrosion inhibition behaviour against mild steel (MS) in 1 M HCl employing the experimental and computational techniques. The surface morphology was studied employing the scanning electron microscope (SEM), atomic force microscope (AFM), and contact measurements. The critical micelle concentration (CMC) was evaluated to be 0.556 mM and the surface tension corresponding to the CMC was 65.28 mN/m. CMEA manifests the best inhibition efficiency (η%) of 99.01% at 0.6163 mM (at 60 °C). CMEA performs as a mixed-type inhibitor and its adsorption at the MS/1 M HCl interface followed the Langmuir isotherm. The theoretical findings from density functional theory (DFT), Monte Carlo (MC), and molecular dynamics (MD) simulations accorded with the experimental findings. The MC simulation’s assessment of CMEA’s high adsorption energy (−185 Kcal/mol) proved that the CMEA efficiently and spontaneously adsorbs at the interface.https://www.mdpi.com/1420-3049/28/4/1581non-ionic surfactantcoco mono ethanol amidecorrosion inhibitionelectrochemical and theoretical techniques |
| spellingShingle | Richika Ganjoo Shveta Sharma Praveen K. Sharma O. Dagdag Avni Berisha Eno E. Ebenso Ashish Kumar Chandrabhan Verma Coco Monoethanolamide Surfactant as a Sustainable Corrosion Inhibitor for Mild Steel: Theoretical and Experimental Investigations Molecules non-ionic surfactant coco mono ethanol amide corrosion inhibition electrochemical and theoretical techniques |
| title | Coco Monoethanolamide Surfactant as a Sustainable Corrosion Inhibitor for Mild Steel: Theoretical and Experimental Investigations |
| title_full | Coco Monoethanolamide Surfactant as a Sustainable Corrosion Inhibitor for Mild Steel: Theoretical and Experimental Investigations |
| title_fullStr | Coco Monoethanolamide Surfactant as a Sustainable Corrosion Inhibitor for Mild Steel: Theoretical and Experimental Investigations |
| title_full_unstemmed | Coco Monoethanolamide Surfactant as a Sustainable Corrosion Inhibitor for Mild Steel: Theoretical and Experimental Investigations |
| title_short | Coco Monoethanolamide Surfactant as a Sustainable Corrosion Inhibitor for Mild Steel: Theoretical and Experimental Investigations |
| title_sort | coco monoethanolamide surfactant as a sustainable corrosion inhibitor for mild steel theoretical and experimental investigations |
| topic | non-ionic surfactant coco mono ethanol amide corrosion inhibition electrochemical and theoretical techniques |
| url | https://www.mdpi.com/1420-3049/28/4/1581 |
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