Biferrocenyl Schiff bases as efficient corrosion inhibitors for an aluminium alloy in HCl solution
a combined experimental and theoretical study
Document identifier: oai:DiVA.org:ltu-77795
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10.1039/C9RA10692HKeyword: Natural Sciences,
Chemical Sciences,
Naturvetenskap,
Kemi,
Physical Chemistry,
Fysikalisk kemi,
Chemistry of Interfaces,
Gränsytors kemiPublication year: 2020Relevant Sustainable Development Goals (SDGs):
The SDG label(s) above have been assigned by OSDG.aiAbstract: The corrosion inhibitive capabilities of some ferrocene-based Schiff bases on aluminium alloy AA2219-T6 in acidic medium were investigated using Tafel polarization, electrochemical impedance spectroscopy (EIS), weight loss measurement, FT-IR spectroscopy and scanning electron microscopic (SEM) techniques. The influence of molecular configuration on the corrosion inhibition behavior has been explored by quantum chemical calculation. Ferrocenyl Schiff bases 4,4′-((((ethane-1,2-diylbis(oxy))bis(4,1-phenylene))bis(methaneylylidene))bis(azaneylylidene))bisferrocene (Fcua), 4,4′-((((ethane-1,2-diylbis(oxy))bis(2-methoxy-1,4-phenylene))bis(methaneylylidene))bis(azaneylylidene))bisferrocene (Fcub) and 4,4′-((((ethane-1,2-diylbis(oxy))bis(2-ethoxy-1,4-phenylene))bis(methaneylylidene))bis(azaneylylidene))bisferrocene (Fcuc) have been synthesized and characterized by FT-IR, 1H and 13C NMR spectroscopic studies. These compounds showed a substantial corrosion inhibition against aluminium alloy in 0.1 M of HCl at 298 K. Fcub and Fcuc showed better anticorrosion efficiency as compared with Fcua due to the electron donating methoxy and ethoxy group substitutions, respectively. Polarization curves also indicated that the studied biferrocenyl Schiff bases were mixed type anticorrosive materials. The inhibition of the aluminium alloy surface by biferrocenyl Schiff bases was evidenced through scanning electron microscopy (SEM) studies. Semi-empirical quantum mechanical studies revealed a correlation between corrosion inhibition efficiency and structural functionalities.
Authors
Uzma Nazir
Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
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Zareen Akhter
Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
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Naveed Kausar Janjua
Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
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Muhammad Adeel Asghar
Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
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Sehrish Kanwal
Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
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Tehmeena Maryum Butt
Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
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Asma Sani
Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
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Faroha Liaqat
Department of Chemistry, Quaid-i-Azam University, Islamabad, Pakistan
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Rizwan Hussain
Laboratory for Advanced Materials Processing (LAMP), NCP, Islamabad, Pakistan
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Faiz Ullah Shah
Luleå tekniska universitet; Kemiteknik
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identifier: oai:DiVA.org:ltu-77795
datestamp: 2021-04-19T12:42:33Z
setSpec: SwePub-ltu
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recordContentSource: ltu
recordCreationDate: 2020-02-20
identifier:
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-77795
10.1039/C9RA10692H
2-s2.0-85080860141
titleInfo:
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lang: eng
title: Biferrocenyl Schiff bases as efficient corrosion inhibitors for an aluminium alloy in HCl solution
subTitle: a combined experimental and theoretical study
abstract: The corrosion inhibitive capabilities of some ferrocene-based Schiff bases on aluminium alloy AA2219-T6 in acidic medium were investigated using Tafel polarization electrochemical impedance spectroscopy (EIS) weight loss measurement FT-IR spectroscopy and scanning electron microscopic (SEM) techniques. The influence of molecular configuration on the corrosion inhibition behavior has been explored by quantum chemical calculation. Ferrocenyl Schiff bases 44′-((((ethane-12-diylbis(oxy))bis(41-phenylene))bis(methaneylylidene))bis(azaneylylidene))bisferrocene (Fcua) 44′-((((ethane-12-diylbis(oxy))bis(2-methoxy-14-phenylene))bis(methaneylylidene))bis(azaneylylidene))bisferrocene (Fcub) and 44′-((((ethane-12-diylbis(oxy))bis(2-ethoxy-14-phenylene))bis(methaneylylidene))bis(azaneylylidene))bisferrocene (Fcuc) have been synthesized and characterized by FT-IR 1H and 13C NMR spectroscopic studies. These compounds showed a substantial corrosion inhibition against aluminium alloy in 0.1 M of HCl at 298 K. Fcub and Fcuc showed better anticorrosion efficiency as compared with Fcua due to the electron donating methoxy and ethoxy group substitutions respectively. Polarization curves also indicated that the studied biferrocenyl Schiff bases were mixed type anticorrosive materials. The inhibition of the aluminium alloy surface by biferrocenyl Schiff bases was evidenced through scanning electron microscopy (SEM) studies. Semi-empirical quantum mechanical studies revealed a correlation between corrosion inhibition efficiency and structural functionalities.
subject:
@attributes:
lang: eng
authority: uka.se
topic:
Natural Sciences
Chemical Sciences
@attributes:
lang: swe
authority: uka.se
topic:
Naturvetenskap
Kemi
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authority: uka.se
topic:
Natural Sciences
Chemical Sciences
Physical Chemistry
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authority: uka.se
topic:
Naturvetenskap
Kemi
Fysikalisk kemi
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topic: Chemistry of Interfaces
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topic: Gränsytors kemi
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publication/journal-article
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Published
10
Validerad;2020;Nivå 2;2020-02-24 (johcin)
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Nazir
Uzma
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affiliation: Department of Chemistry Quaid-i-Azam University Islamabad Pakistan
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Akhter
Zareen
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affiliation: Department of Chemistry Quaid-i-Azam University Islamabad Pakistan
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Janjua
Naveed Kausar
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Asghar
Muhammad Adeel
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Kanwal
Sehrish
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Butt
Tehmeena Maryum
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Asma
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Liaqat
Faroha
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affiliation: Department of Chemistry Quaid-i-Azam University Islamabad Pakistan
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Hussain
Rizwan
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affiliation: Laboratory for Advanced Materials Processing (LAMP) NCP Islamabad Pakistan
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Shah
Faiz Ullah
1981-
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roleTerm: aut
affiliation:
Luleå tekniska universitet
Kemiteknik
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faisha
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dateIssued: 2020
publisher: Royal Society of Chemistry
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title: RSC Advances
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2046-2069
2046-2069
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type: volume
number: 10
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type: issue
number: 13
extent:
start: 7585
end: 7599
location:
url: http://ltu.diva-portal.org/smash/get/diva2:1395074/FULLTEXT01.pdf
accessCondition: gratis
physicalDescription:
form: electronic
typeOfResource: text