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Electrochemical study on using aminated MIL–101(Cr) as corrosion inhibitor for mild steel in acidic environment

Hassan M. Hassan (Department of Chemistry, College of Science, Jouf University, Sakaka, Saudi Arabia)
Ibrahim H. Alsohaimi (Department of Chemistry, College of Science, Jouf University, Sakaka, Saudi Arabia)
Mohamed R. El-Aassar (Department of Chemistry, College of Science, Jouf University, Sakaka, Saudi Arabia)
Mohammed A. El-Hashemy (Department of Chemistry, College of Science, Jouf University, Sakaka, Saudi Arabia and Air Pollution Research Department, Environmental and Climate Change Research Institute, National Research Centre, Giza, Egypt)
Thamer S. Alraddadid (Department of Chemistry, University of Jeddah, Jeddah, Saudi Arabia)

Anti-Corrosion Methods and Materials

ISSN: 0003-5599

Article publication date: 13 December 2022

Issue publication date: 2 January 2023

39

Abstract

Purpose

The purpose of this paper is to confirm the importance of using metal–organic frameworks (MOFs) in the field of corrosion control due to their potential use as corrosion inhibitors.

Design/methodology/approach

NH2–MIL–101(Cr), an amine-functionalized chromium-based MOF [Cr(III)-MOF], was prepared by solvothermal technique. Thereafter, Cr-MOF was used as an anticorrosion additive for mild steel (MS) in 1 m HCl solution. This inhibition behavior was tested by electrochemical tests including electrochemical impedance spectroscopy and potentiodynamic polarization (PDP).

Findings

Increasing the added amount of Cr-MOF enhances its inhibition performance, which attained 96.40% at 30 ppm. The obtained data from PDP measurements describe Cr-MOF as a mixed-type inhibitor. Based on SEM/EDS and FTIR analysis, the adsorption of Cr-MOF on the surface of MS that prevents MS corrosion has been demonstrated. Furthermore, Langmuir model is the most adequate adsorption isotherm for the obtained experimental data.

Originality/value

This study revealed that NH2–MIL–101(Cr), an amine-functionalized chromium-based MOF (Cr(III)-MOF), is a potential corrosion inhibitor for MS in 1 m HCl solution.

Keywords

Acknowledgements

The authors are grateful to the deanship of Scientific Research at Jouf University for funding this work under Grant No. (DSR-2021-03-0358).

Citation

Hassan, H.M., Alsohaimi, I.H., El-Aassar, M.R., El-Hashemy, M.A. and Alraddadid, T.S. (2023), "Electrochemical study on using aminated MIL–101(Cr) as corrosion inhibitor for mild steel in acidic environment", Anti-Corrosion Methods and Materials, Vol. 70 No. 1, pp. 34-41. https://doi.org/10.1108/ACMM-08-2022-2686

Publisher

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Emerald Publishing Limited

Copyright © 2022, Emerald Publishing Limited

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