Mentha pulegium extract as a natural product for the inhibition of corrosion. Part I: electrochemical studies

The inhibitory effect of Mentha pulegium extract (MPE) on steel corrosion in 1 M HCl solution was investigated using potentiodynamic polarisation and electrochemical impedance spectroscopy. The inhibition efficiency of MPE was found to increase with the concentration and reached 88% at 33% (v/v). Po...

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Bibliographic Details
Published in:Natural product research 2014-01, Vol.28 (15), p.1206-1209
Main Authors: Khadraoui, Abdelkader, Khelifa, Abdellah, Boutoumi, Hocine, Hammouti, Belkheir
Format: Article
Language:English
Subjects:
Adsorption
Algorithms
Biological Products - chemistry
Biological Products - isolation & purification
Biological Products - pharmacology
Corrosion
extract
green inhibitor
Mentha pulegium
Mentha pulegium - chemistry
natural plant
Plant Extracts - chemistry
Plant Extracts - isolation & purification
Plant Extracts - pharmacology
Steel
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Summary:The inhibitory effect of Mentha pulegium extract (MPE) on steel corrosion in 1 M HCl solution was investigated using potentiodynamic polarisation and electrochemical impedance spectroscopy. The inhibition efficiency of MPE was found to increase with the concentration and reached 88% at 33% (v/v). Polarisation measurements show that the natural extract acted as a mixed inhibitor. The remarkable inhibition efficiency of MPE was discussed in terms of blocking of electrode surface by adsorption of inhibitor molecules through active centres. The adsorption of MPE was found to accord with the Temkin isotherm.
ISSN:1478-6419
1478-6427
DOI:10.1080/14786419.2014.919288