Title of article
Mentha spicata L. Extract as a Green Corrosion Inhibitor for Carbon Steel in HCl Solution
Author/Authors
shahidi, m Department of Chemistry - Kerman Branch - Islamic Azad University , golestani, gh Department of Chemistry - Kerman Branch - Islamic Azad University , gholamhosseinzadeh, m.r Department of Chemistry - Kerman Branch - Islamic Azad University
Pages
15
From page
293
To page
307
Abstract
The effect of Mentha spicata L. extract on the corrosion behaviour of carbon steel in 1.0 M HCl solution was investigated using polarization, electrochemical impedance spectroscopy (EIS) and electrochemical noise (EN) techniques. The solution containing 250 ppm of the ethanolic solution of extract showed the highest inhibition efficiency (IE). The effect of temperature on the rate of corrosion in the absence and presence of inhibitor was also studied. Adsorption of extract on the carbon steel surface obeyed the Langmuir adsorption isotherm. Polarization measurements indicated that the inhibitor was of mixed type. The IE values from EN measurements showed a reasonable agreement with those obtained from polarization and EIS techniques. The EN method was applied as a complementary quantitative technique to study the corrosion behaviour of the inhibitor.
Keywords
plant extract , Green inhibitor , Electrochemical Impedance Spectroscopy (EIS) , Electrochemical noise (EN) wavelet analysis
Journal title
Physical Chemistry Research
Serial Year
2017
Record number
2511625
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