Environmentally conscience corrosion inhibitors for mild steel in corrosive hydrochloric acid solution by Uncaria Cordata extract: experimental and theoretical studies

The Uncaria Cordata as corrosion inhibitors for mild steel (MS) in a 1.0 M hydrochloric acid (HCl) solution. The EIS, polarization, and LPR measurements were used as experimental measurements to confirm the anti-corrosion performances of the Uncaria Cordata at room temperature. The corrosion inhibit...

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Main Authors: Othman, Nor Affanizam, Marwan Ali, Ab Malik, Sams, Noor Syafiqah, Salim, Fatimah, Panuh, Dedikarni, Yaakob, Muhamad Kamil, Embong, Zaidi, Md Sauri, Ahmad Shalabi, Che Isa, Nik Norziehana, Nor Hashim, Nor Zakiah
Format: Article
Language:English
Published: Taylor&francis 2023
Subjects:
Online Access:http://eprints.uthm.edu.my/9224/1/J16009_e19c91a8c7372eecb1f31e92cd69ecae.pdf
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author Othman, Nor Affanizam
Marwan Ali, Ab Malik
Sams, Noor Syafiqah
Salim, Fatimah
Panuh, Dedikarni
Yaakob, Muhamad Kamil
Embong, Zaidi
Md Sauri, Ahmad Shalabi
Che Isa, Nik Norziehana
Nor Hashim, Nor Zakiah
author_facet Othman, Nor Affanizam
Marwan Ali, Ab Malik
Sams, Noor Syafiqah
Salim, Fatimah
Panuh, Dedikarni
Yaakob, Muhamad Kamil
Embong, Zaidi
Md Sauri, Ahmad Shalabi
Che Isa, Nik Norziehana
Nor Hashim, Nor Zakiah
author_sort Othman, Nor Affanizam
collection UTHM
description The Uncaria Cordata as corrosion inhibitors for mild steel (MS) in a 1.0 M hydrochloric acid (HCl) solution. The EIS, polarization, and LPR measurements were used as experimental measurements to confirm the anti-corrosion performances of the Uncaria Cordata at room temperature. The corrosion inhibitors, even at a low dosage range, achieved inhibition efficiencies to a maximum of 97.0% for 400 ppm of Uncaria Cordata. Surface morphology via AFM and SEM/EDX was carried out to validate the presence of protected film and an optimum concentration of each extract above the metal’s surface in the corrosive acidic solution. The DGo ads value � 19.70 kJ/mol proved a spontaneous merge of physical and chemical adsorption by the extract compounds at the interface of MS and the HCl solution. DFT was governed to accommodate the elevated inhibition efficiency upshot obtained by the electrochemical tests and recommend a synergy mechanism for most of the adsorbed active compounds in Uncaria Cordata inhibitors with the MS surface. Monte Carlo simulation indicates three active compounds, namely 1, 2, and 8, found to have parallel adsorption on MS. This encourages the highest surface coverage and shields the MS surface from the intrusion of corrosive agents.
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spelling uthm.eprints-92242023-07-17T07:41:03Z http://eprints.uthm.edu.my/9224/ Environmentally conscience corrosion inhibitors for mild steel in corrosive hydrochloric acid solution by Uncaria Cordata extract: experimental and theoretical studies Othman, Nor Affanizam Marwan Ali, Ab Malik Sams, Noor Syafiqah Salim, Fatimah Panuh, Dedikarni Yaakob, Muhamad Kamil Embong, Zaidi Md Sauri, Ahmad Shalabi Che Isa, Nik Norziehana Nor Hashim, Nor Zakiah T Technology (General) The Uncaria Cordata as corrosion inhibitors for mild steel (MS) in a 1.0 M hydrochloric acid (HCl) solution. The EIS, polarization, and LPR measurements were used as experimental measurements to confirm the anti-corrosion performances of the Uncaria Cordata at room temperature. The corrosion inhibitors, even at a low dosage range, achieved inhibition efficiencies to a maximum of 97.0% for 400 ppm of Uncaria Cordata. Surface morphology via AFM and SEM/EDX was carried out to validate the presence of protected film and an optimum concentration of each extract above the metal’s surface in the corrosive acidic solution. The DGo ads value � 19.70 kJ/mol proved a spontaneous merge of physical and chemical adsorption by the extract compounds at the interface of MS and the HCl solution. DFT was governed to accommodate the elevated inhibition efficiency upshot obtained by the electrochemical tests and recommend a synergy mechanism for most of the adsorbed active compounds in Uncaria Cordata inhibitors with the MS surface. Monte Carlo simulation indicates three active compounds, namely 1, 2, and 8, found to have parallel adsorption on MS. This encourages the highest surface coverage and shields the MS surface from the intrusion of corrosive agents. Taylor&francis 2023 Article PeerReviewed text en http://eprints.uthm.edu.my/9224/1/J16009_e19c91a8c7372eecb1f31e92cd69ecae.pdf Othman, Nor Affanizam and Marwan Ali, Ab Malik and Sams, Noor Syafiqah and Salim, Fatimah and Panuh, Dedikarni and Yaakob, Muhamad Kamil and Embong, Zaidi and Md Sauri, Ahmad Shalabi and Che Isa, Nik Norziehana and Nor Hashim, Nor Zakiah (2023) Environmentally conscience corrosion inhibitors for mild steel in corrosive hydrochloric acid solution by Uncaria Cordata extract: experimental and theoretical studies. JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY. pp. 1-29. https://doi.org/10.1080/01694243.2023.2196905
spellingShingle T Technology (General)
Othman, Nor Affanizam
Marwan Ali, Ab Malik
Sams, Noor Syafiqah
Salim, Fatimah
Panuh, Dedikarni
Yaakob, Muhamad Kamil
Embong, Zaidi
Md Sauri, Ahmad Shalabi
Che Isa, Nik Norziehana
Nor Hashim, Nor Zakiah
Environmentally conscience corrosion inhibitors for mild steel in corrosive hydrochloric acid solution by Uncaria Cordata extract: experimental and theoretical studies
title Environmentally conscience corrosion inhibitors for mild steel in corrosive hydrochloric acid solution by Uncaria Cordata extract: experimental and theoretical studies
title_full Environmentally conscience corrosion inhibitors for mild steel in corrosive hydrochloric acid solution by Uncaria Cordata extract: experimental and theoretical studies
title_fullStr Environmentally conscience corrosion inhibitors for mild steel in corrosive hydrochloric acid solution by Uncaria Cordata extract: experimental and theoretical studies
title_full_unstemmed Environmentally conscience corrosion inhibitors for mild steel in corrosive hydrochloric acid solution by Uncaria Cordata extract: experimental and theoretical studies
title_short Environmentally conscience corrosion inhibitors for mild steel in corrosive hydrochloric acid solution by Uncaria Cordata extract: experimental and theoretical studies
title_sort environmentally conscience corrosion inhibitors for mild steel in corrosive hydrochloric acid solution by uncaria cordata extract experimental and theoretical studies
topic T Technology (General)
url http://eprints.uthm.edu.my/9224/1/J16009_e19c91a8c7372eecb1f31e92cd69ecae.pdf
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