Understanding corrosion inhibition of mild steel in acid medium by new benzonitriles: Insights from experimental and computational studies

  • A. Chaouiki, H. Lgaz, Ill-Min Chung, I.H. Ali, S.L. Gaonkar, K.S. Bhat, R. Salghi, H. Oudda, M.I. Khan
  • Journal of Molecular Liquids, June 2018, Elsevier
  • DOI: 10.1016/j.molliq.2018.06.103

Corrosion inhibition of mild steel in acid medium by new benzonitriles

What is it about?

Two benzonitrilederivatives, namely 4-(isopentylamino)-3-nitrobenzonitrile(PANB) and 3-amino-4-(isopentylamino)benzonitrile(APAB) have been synthesized and evaluated as corrosion inhibitors for mild steel (MS) in 1 M HCl solution at 303K by gravimetric, potentiodynamic polarization (PDP) curves, and electrochemical impedance spectroscopy (EIS) methods, as well as Density Functional Theory (DFT) and Molecular Dynamic (MD) simulations.

Why is it important?

The outcome of this paper may help towards rational design of new corrosion inhibitors. We are currently working on many organic compounds as corrosion inhibitors. Cited by 5 times (update: 16/02/2019).


Dr Subrahmanya Bhat K
Manipal Institute Of Technology, Manipal Academy of Higher Education

Corrosion inhibitors: Many organic compounds have been studied, but too many of the compounds are not subjected for rational design. We contemplate inhibitory action with molecular structure along with cost efficiency of the synthesis. This paper in series of publications involving the use of compounds synthesized which otherwise is discarded as waste. For other papers, please refer; H. Lgaz, K. S. Bhat, R. Salghi, Shubhalaxmi, S. Jodeh, M. Algarra, B. Hammouti, A. Essamri, Insights into corrosion inhibition behavior of three chalcone derivatives for mild steel in hydrochloric acid solution, J. Mol. Liq, Vol 238, 71-83, 2017. H. Lgaz, R. Salghi, K. S. Bhat, A. Chaouiki, Shubhalaxmi, S. Jodeh, Correlated Experimental and Theoretical Study on Inhibition Behavior of Novel Quinoline Derivatives for the Corrosion of Mild Steel in Hydrochloric Acid Solution, J. Mol. Liq., 244, 154-168, 2017. H. Lgaz, R. Salghi, A. Chaouiki, Shubhalaxmi, S. Jodeh, K. S. Bhat, Pyrazoline derivatives as possible Corrosion Inhibitors for Mild Steel in Acidic Media: A combined Experimental and Theoretical approach, Cogent Engg, 2018, Article id: 1441585 (17 pages). A. Chaouiki, H. Lgaz, S. Zehra, Rachid Salghi, Ill-Min Chung, Y. E. Aoufir, K. Subrahmanya Bhat, I. H. Ali, S. L. Gaonkar, M. I. Khan, H. Oudda, Exploring Deep Insights into the Interaction Mechanism of a Quinazoline Derivative with Mild Steel in HCl: Electrochemical, DFT, and Molecular Dynamic Simulation Studies, J. Adhesion Sci. Tech., 33(9), 921-944, 2019, DOI:10.1080/01694243.2018.1554764. A. Chaouiki, H. Lgaz, R. Salghi, M. Chafiq, H. Oudda, Shubhalaxmi, K. S. Bhat, I. Cretescu, I. H. Ali, M. I. Khan, I-M. Chung, Assessing the Impact of Electron-Donating-Substituted Chalcones on Inhibition of Mild Steel Corrosion in HCl Solution: Experimental Results and Molecular level Insights, Coll. Sur. (A): Phy. Eng. Aspects. 588, 124366, 2020.

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The following have contributed to this page: Dr Subrahmanya Bhat K and Dr Santosh L Gaonkar