European Journal of Chemistry

Inhibitive action of Bridelia retusa leaves extract on corrosion of mild steel in acidic media

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Published: Jun 15, 2010
DOI: https://doi.org/10.5155/eurjchem.1.2.129-133.52
Keywords:
Bridelia retusa, Acid corrosion inhibitor, Electrochemical polarization, Electrochemical impedance spectroscopy, Scanning electron microscopy, Mild steel
Section
Research Article
Issue
Vol. 1 No. 2 (2010): June 2010
Dates
Received 2010-04-09
Accepted 2010-04-27
Published 2010-06-15


Main Article Content

Niketan Patel
Department of Applied Chemistry, Sardar Vallabhbhai National Institute of Technology, Surat-395007, Gujarat, India
Anamika Rawat
Bhanuben and Ratilal Doshi School of Biosciences, Sardar Patel University, Vallabh Vidyanagar Nagar-388120, Gujarat, India
Smita Jauhari
Department of Applied Chemistry, Sardar Vallabhbhai National Institute of Technology, Surat-395007, Gujarat, India
Girish Mehta
Department of Applied Chemistry, Sardar Vallabhbhai National Institute of Technology, Surat-395007, Gujarat, India

Abstract

Extract of Bridelia retusa leaves was investigated as corrosion inhibitor of mild steel in 1 N H2SO4 using conventional weight loss, electrochemical polarizations, electrochemical impedance spectroscopy and scanning electron microscopic studies. The weight loss results showed that the extract of Bridelia retusa leaves is excellent corrosion inhibitor and electrochemical polarizations data revealed the mixed mode of inhibition. While the results of electrochemical impedance spectroscopy have shown that the change in the impedance parameters, charge transfer resistance and double layer capacitance, with the change in concentration of the extract is due to the adsorption of active molecules leading to the formation of a protective layer on the surface of mild steel. Scanning electron microscopic studies provided the confirmatory evidence of improved surface condition, due to the adsorption, for the corrosion protection.

1_2_129_133_800


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How to Cite
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Patel, N.; Rawat, A.; Jauhari, S.; Mehta, G. Inhibitive Action of Bridelia Retusa Leaves Extract on Corrosion of Mild Steel in Acidic Media. Eur. J. Chem. 2010, 1, 129-133.

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