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HomeInternational Letters of Chemistry, Physics and...International Letters of Chemistry, Physics and...Protecting Mild Steel from Acid Corrosion Using...

Protecting Mild Steel from Acid Corrosion Using Extract from Ocimum gratissimum Leaves

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Abstract:

The anti-corrosion properties of the ethanol extract of Ocimum gratissimum (OG) leaves on the corrosion of mild steel in both 1 M HCl and 0.5 M H₂SO₄was studied using gravimetric, electrochemical, Fourier transform Infrared spectroscopy and scanning electron microscopy methods of corrosion monitoring. The gravimetric results revealed that the inhibitor maintained good inhibition efficiency even at 120 hours of immersion. The electrochemical results showed that OG extract functioned as a mixed type corrosion inhibitor for mild steel in both 1 M HCl and 0.5 M H₂SO_4,inhibiting both the anodic and cathodic partial reactions via adsorption of the extract constituents on the metal/solution interface. Fourier Transform Infrared Spectroscopy and surface examination results confirmed the adsorption of the extract, organic constituents on the mild steel surface. The results showed that OG ethanol extract functioned as a good corrosion inhibitor for mild steel in both 1 M HCl and 0.5 M H₂SO₄ solutions.

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Periodical:

International Letters of Chemistry, Physics and Astronomy (Volume 73)

Pages:

9-21

DOI:

https://doi.org/10.56431/p-ayz8lz

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Cite this paper

Online since:

April 2017

Authors:

Chinonso Blessing Adindu, Maduabuchi Arinzechukwu Chidiebere, Francis Chizoruo Ibe, Cynthia E. Ogukwe, Emmanuel Emeka Oguzie*

Keywords:

Adsorption, Fourier Transform Infrared Spectroscopy, Mild Steel, Ocimum gratissimum, Potentiodynamic Polarization

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Creative Commons CC BY 4.0

* - Corresponding Author

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