Kinetic and Thermodynamic Investigation on Mild Steel Corrosion Inhibition by Terminalia Mantaly Leaf Extract
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042022000300157 |
Resumo: | Abstract Mild steel (MS) corrosion inhibition by Terminalia mantaly (TM), in 1.0 M HCl, was studied using weight loss and linear polarization methods, at different reaction conditions. Gas chromatography-mass spectrometry (GC-MS) was used to determine the possible extract components. Fourier transformed infrared spectroscopy (FTIR) and optical microscopy were used to investigate the interaction of the plant extract phytochemicals with the MS surface. The obtained results revealed that the inhibition efficiency percentage (IE%) increased with a decrease in the TM concentration, and decreased with a rise in temperature (T). The IE% also decreased as the hydrochloric acid (HCl) concentration increased. Inhibition occurred through the TM phyto-molecules adsorption onto the MS surface. The corrosion inhibition kinetics followed a zero order reaction, and it was uni-molecular. The linear polarization showed that TM is a mixed-type inhibitor. Gibb’s free energies values confirmed a spontaneous process, while TM adsorption onto the MS surface was found to obey physisorption, aligning with the Langmuir’s and El-Awady’s adsorption isotherm models. |
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Kinetic and Thermodynamic Investigation on Mild Steel Corrosion Inhibition by Terminalia Mantaly Leaf ExtractTerminalia mantalyactivation energycorrosionGibb’s free energylinear polarizationMSAbstract Mild steel (MS) corrosion inhibition by Terminalia mantaly (TM), in 1.0 M HCl, was studied using weight loss and linear polarization methods, at different reaction conditions. Gas chromatography-mass spectrometry (GC-MS) was used to determine the possible extract components. Fourier transformed infrared spectroscopy (FTIR) and optical microscopy were used to investigate the interaction of the plant extract phytochemicals with the MS surface. The obtained results revealed that the inhibition efficiency percentage (IE%) increased with a decrease in the TM concentration, and decreased with a rise in temperature (T). The IE% also decreased as the hydrochloric acid (HCl) concentration increased. Inhibition occurred through the TM phyto-molecules adsorption onto the MS surface. The corrosion inhibition kinetics followed a zero order reaction, and it was uni-molecular. The linear polarization showed that TM is a mixed-type inhibitor. Gibb’s free energies values confirmed a spontaneous process, while TM adsorption onto the MS surface was found to obey physisorption, aligning with the Langmuir’s and El-Awady’s adsorption isotherm models.Sociedade Portuguesa de Electroquímica2022-06-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articletext/htmlhttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042022000300157Portugaliae Electrochimica Acta v.40 n.3 2022reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAPenghttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042022000300157Chahul,H. F.Kayode,E. S.Wuana,R. A.info:eu-repo/semantics/openAccess2024-02-06T17:07:37Zoai:scielo:S0872-19042022000300157Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:20:29.010834Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Kinetic and Thermodynamic Investigation on Mild Steel Corrosion Inhibition by Terminalia Mantaly Leaf Extract |
title |
Kinetic and Thermodynamic Investigation on Mild Steel Corrosion Inhibition by Terminalia Mantaly Leaf Extract |
spellingShingle |
Kinetic and Thermodynamic Investigation on Mild Steel Corrosion Inhibition by Terminalia Mantaly Leaf Extract Chahul,H. F. Terminalia mantaly activation energy corrosion Gibb’s free energy linear polarization MS |
title_short |
Kinetic and Thermodynamic Investigation on Mild Steel Corrosion Inhibition by Terminalia Mantaly Leaf Extract |
title_full |
Kinetic and Thermodynamic Investigation on Mild Steel Corrosion Inhibition by Terminalia Mantaly Leaf Extract |
title_fullStr |
Kinetic and Thermodynamic Investigation on Mild Steel Corrosion Inhibition by Terminalia Mantaly Leaf Extract |
title_full_unstemmed |
Kinetic and Thermodynamic Investigation on Mild Steel Corrosion Inhibition by Terminalia Mantaly Leaf Extract |
title_sort |
Kinetic and Thermodynamic Investigation on Mild Steel Corrosion Inhibition by Terminalia Mantaly Leaf Extract |
author |
Chahul,H. F. |
author_facet |
Chahul,H. F. Kayode,E. S. Wuana,R. A. |
author_role |
author |
author2 |
Kayode,E. S. Wuana,R. A. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Chahul,H. F. Kayode,E. S. Wuana,R. A. |
dc.subject.por.fl_str_mv |
Terminalia mantaly activation energy corrosion Gibb’s free energy linear polarization MS |
topic |
Terminalia mantaly activation energy corrosion Gibb’s free energy linear polarization MS |
description |
Abstract Mild steel (MS) corrosion inhibition by Terminalia mantaly (TM), in 1.0 M HCl, was studied using weight loss and linear polarization methods, at different reaction conditions. Gas chromatography-mass spectrometry (GC-MS) was used to determine the possible extract components. Fourier transformed infrared spectroscopy (FTIR) and optical microscopy were used to investigate the interaction of the plant extract phytochemicals with the MS surface. The obtained results revealed that the inhibition efficiency percentage (IE%) increased with a decrease in the TM concentration, and decreased with a rise in temperature (T). The IE% also decreased as the hydrochloric acid (HCl) concentration increased. Inhibition occurred through the TM phyto-molecules adsorption onto the MS surface. The corrosion inhibition kinetics followed a zero order reaction, and it was uni-molecular. The linear polarization showed that TM is a mixed-type inhibitor. Gibb’s free energies values confirmed a spontaneous process, while TM adsorption onto the MS surface was found to obey physisorption, aligning with the Langmuir’s and El-Awady’s adsorption isotherm models. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-06-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042022000300157 |
url |
http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042022000300157 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042022000300157 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Portuguesa de Electroquímica |
publisher.none.fl_str_mv |
Sociedade Portuguesa de Electroquímica |
dc.source.none.fl_str_mv |
Portugaliae Electrochimica Acta v.40 n.3 2022 reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799137292470714368 |