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Green chemistry approach to corrosion control: parthenium hysterophorus extract as an inhibitor for AZ31 alloys

Kavimani V., Gopal P.M., Arulmurugan R., Saravana Mani Kailasam

World Journal of Engineering

ISSN: 1708-5284

Article publication date: 31 January 2025

3

Abstract

Purpose

The purpose of this study is to develop a green corrosion inhibitor (GCI) from the parthenium hysterophorus (PHS) leaf and identifying its efficiency in corrosion inhibition of AZ31 alloy.

Design/methodology/approach

GCI from PHS leaf is extracted with the aid of Soxhlet apparatus and analysed through Fourier transform infrared spectroscopy (FTIR) and phytochemical tests to identify the functional groups and chemical compounds present. Inhibition efficiency (IE) of PHS extract is identified through polarization analysis and immersion tests in which concentration of PHS extract (0–300 ppm) and temperature (303–353 K) is varied.

Findings

Maximum IE of 84% is exhibited by the prepared PHS extract at a concentration of 250 ppm at 303 K and further addition diminishes IE. The developed GCI is found effective in room temperature (303 K) as it exhibits lower IE when temperature increased. Both physical and chemical absorption mechanisms were identified for PHS extract over AZ31 surface, whereas FTIR and SEM analysis confirms the development of passivation layer.

Originality/value

Development of GCI from the leaf of a weed (PHS) that disturbs the ecosystem and identifying its efficiency in preventing corrosion of AZ31 under saline environment.

Keywords

Acknowledgements

Competing interests: The authors declare that they have no competing interests.

Data availability: The data used to support the findings of this study are included within the article. Further data or information is available from the corresponding author upon request.

Conflicts of interest: The authors declare that there are no conflicts of interest regarding the publication of this paper.

Citation

V., K., P.M., G., R., A. and Kailasam, S.M. (2025), "Green chemistry approach to corrosion control: parthenium hysterophorus extract as an inhibitor for AZ31 alloys", World Journal of Engineering, Vol. ahead-of-print No. ahead-of-print. https://doi.org/10.1108/WJE-06-2024-0347

Publisher

:

Emerald Publishing Limited

Copyright © 2025, Emerald Publishing Limited

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