Fluconazole as an inhibitor for aluminium corrosion in 0.1 M HCl

I. B. Obot; N. O. Obi-Egbedi

doi:10.1016/j.colsurfa.2008.07.058

Fluconazole as an inhibitor for aluminium corrosion in 0.1 M HCl

I. B. Obot^*, N. O. Obi-Egbedi

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

188 Scopus citations

Abstract

The interfacial behavior of fluconazole (FLC) between aluminium and hydrochloric acid has been investigated by using weight loss technique at 30-50 °C. The results showed that fluconazole is an excellent corrosion inhibitor for aluminium in acidic medium. Inhibition efficiency increased with increase in the concentrations of fluconazole but decreased with rise in temperature. The adsorption of the inhibitor on the aluminium surface is found to accord with Temkin adsorption isotherm. Some thermodynamic and activation parameters have been calculated and analysed. The mechanism of physical adsorption is proposed from the values of E_a and Δ G_ads ° obtained. The correlation of inhibition effect and molecular structure of fluconazole was then discussed by quantum chemistry study to further provide insight into the mechanism of the inhibitory action.

Original language	English
Pages (from-to)	207-212
Number of pages	6
Journal	Colloids and Surfaces A: Physicochemical and Engineering Aspects
Volume	330
Issue number	2-3
DOIs	https://doi.org/10.1016/j.colsurfa.2008.07.058
State	Published - 1 Dec 2008
Externally published	Yes

Keywords

Adsorption isotherm
Aluminium
Austin Model 1 (AM1)
Corrosion inhibition
Fluconazole
Quantum chemical studies

ASJC Scopus subject areas

Surfaces and Interfaces
Physical and Theoretical Chemistry
Colloid and Surface Chemistry

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10.1016/j.colsurfa.2008.07.058

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title = "Fluconazole as an inhibitor for aluminium corrosion in 0.1 M HCl",

abstract = "The interfacial behavior of fluconazole (FLC) between aluminium and hydrochloric acid has been investigated by using weight loss technique at 30-50 °C. The results showed that fluconazole is an excellent corrosion inhibitor for aluminium in acidic medium. Inhibition efficiency increased with increase in the concentrations of fluconazole but decreased with rise in temperature. The adsorption of the inhibitor on the aluminium surface is found to accord with Temkin adsorption isotherm. Some thermodynamic and activation parameters have been calculated and analysed. The mechanism of physical adsorption is proposed from the values of Ea and Δ Gads ° obtained. The correlation of inhibition effect and molecular structure of fluconazole was then discussed by quantum chemistry study to further provide insight into the mechanism of the inhibitory action.",

keywords = "Adsorption isotherm, Aluminium, Austin Model 1 (AM1), Corrosion inhibition, Fluconazole, Quantum chemical studies",

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T1 - Fluconazole as an inhibitor for aluminium corrosion in 0.1 M HCl

AU - Obot, I. B.

AU - Obi-Egbedi, N. O.

PY - 2008/12/1

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N2 - The interfacial behavior of fluconazole (FLC) between aluminium and hydrochloric acid has been investigated by using weight loss technique at 30-50 °C. The results showed that fluconazole is an excellent corrosion inhibitor for aluminium in acidic medium. Inhibition efficiency increased with increase in the concentrations of fluconazole but decreased with rise in temperature. The adsorption of the inhibitor on the aluminium surface is found to accord with Temkin adsorption isotherm. Some thermodynamic and activation parameters have been calculated and analysed. The mechanism of physical adsorption is proposed from the values of Ea and Δ Gads ° obtained. The correlation of inhibition effect and molecular structure of fluconazole was then discussed by quantum chemistry study to further provide insight into the mechanism of the inhibitory action.

AB - The interfacial behavior of fluconazole (FLC) between aluminium and hydrochloric acid has been investigated by using weight loss technique at 30-50 °C. The results showed that fluconazole is an excellent corrosion inhibitor for aluminium in acidic medium. Inhibition efficiency increased with increase in the concentrations of fluconazole but decreased with rise in temperature. The adsorption of the inhibitor on the aluminium surface is found to accord with Temkin adsorption isotherm. Some thermodynamic and activation parameters have been calculated and analysed. The mechanism of physical adsorption is proposed from the values of Ea and Δ Gads ° obtained. The correlation of inhibition effect and molecular structure of fluconazole was then discussed by quantum chemistry study to further provide insight into the mechanism of the inhibitory action.

KW - Adsorption isotherm

KW - Aluminium

KW - Austin Model 1 (AM1)

KW - Corrosion inhibition

KW - Fluconazole

KW - Quantum chemical studies

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JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects

JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects

IS - 2-3

ER -

Fluconazole as an inhibitor for aluminium corrosion in 0.1 M HCl

Abstract

Keywords

ASJC Scopus subject areas

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