Effective green corrosion inhibition of aluminium using analgin in acidic medium: an experimental and theoretical study

The anti-corrosion potency of analgin on the corrosion of aluminum in 0.5 M HCl solution was examined at various concentrations and temperatures (298-328 K) through methods viz., weight loss studies, potentiodynamic polarization techniques, electrochemical impedance spectroscopy (EIS), computational...

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Bibliographic Details
Published in:Chemical engineering communications 2021-08, Vol.208 (8), p.1121-1130
Main Authors: Bashir, Sumayah, Lgaz, Hassane, Chung, Ill-Min, Kumar, Ashish
Format: Article
Language:English
Subjects:
Adsorption
Aluminum
analgin
Corrosion
Corrosion prevention
Corrosion tests
Electrochemical impedance spectroscopy
inhibition efficiency
inhibitor
Metal surfaces
Molecular dynamics
Montecarlo simulation
Surface chemistry
Weight loss
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Summary:The anti-corrosion potency of analgin on the corrosion of aluminum in 0.5 M HCl solution was examined at various concentrations and temperatures (298-328 K) through methods viz., weight loss studies, potentiodynamic polarization techniques, electrochemical impedance spectroscopy (EIS), computational studies and AFM studies. PDP data reveal that all analgin acts as a significant mixed-type effect at high inhibitor concentrations of 4000 ppm. EIS data reveal better adsorption of analgin on aluminum surface at increased inhibitor concentrations reaching a maximum efficiency of 92% at 4000 ppm. Analgin was inclined toward the Langmuir adsorption-isotherm. Furthermore, molecular dynamics simulations have been performed to illustrate the most conceivable adsorption configuration between the inhibitor and metal surface.
ISSN:0098-6445
1563-5201
DOI:10.1080/00986445.2020.1752680