Correlated experimental and theoretical study on inhibition behavior of novel quinoline derivatives for the corrosion of mild steel in hydrochloric acid solution

Hassane Lgaz, Rachid Salghi, K. Subrahmanya Bhat, Abdelkarim Chaouiki, Shubhalaxmi, Shehdeh Jodeh

Research output: Contribution to journalArticle

48 Citations (Scopus)

Abstract

The corrosion inhibition properties of three quinoline derivatives namely, 2,6-dichloroquinoline-3-carbaldehyde (QA-1), 2-chloro-6-nitroquinoline-3-carbaldehyde (QA-2) and 2,6-dichloro-8-nitroquinoline-3-carbaldehyde (QA-3) for mild steel (MS) in 1.0 M HCl at 303 K were studied by using electrochemical techniques, the density functional theory and molecular dynamic simulations. Experimentally obtained results showed that the quinoline derivatives are excellent inhibitors and that their adsorption on metal surface was found to follow that of the Langmuir adsorption model. Electrochemical findings revealed that quinoline derivatives behave as mixed-type inhibitors. These inhibitors increased the polarization resistance and simultaneously lowered the double layer capacitance, thereby confirming their high potentialities to protect metal against dissolution. Surface morphology of the MS surface in both the absence and presence of quinoline derivatives was examined using Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM). The mechanism of inhibition action of the studied quinolines was discussed in the light of the DFT and molecular dynamic (MD) simulations studies. New insights were brought by a diffusion model and radial distribution function (RDF). Theoretical results agree well with the experimental results.

Original languageEnglish
Pages (from-to)154-168
Number of pages15
JournalJournal of Molecular Liquids
Volume244
DOIs
Publication statusPublished - 01-10-2017

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Hydrochloric Acid
hydrochloric acid
quinoline
Hydrochloric acid
Carbon steel
Nitroquinolines
corrosion
steels
Corrosion
Derivatives
inhibitors
Molecular dynamics
Metals
Quinolines
Adsorption
molecular dynamics
Computer simulation
Corrosion inhibitors
Discrete Fourier transforms
adsorption

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Spectroscopy
  • Physical and Theoretical Chemistry
  • Materials Chemistry

Cite this

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title = "Correlated experimental and theoretical study on inhibition behavior of novel quinoline derivatives for the corrosion of mild steel in hydrochloric acid solution",
abstract = "The corrosion inhibition properties of three quinoline derivatives namely, 2,6-dichloroquinoline-3-carbaldehyde (QA-1), 2-chloro-6-nitroquinoline-3-carbaldehyde (QA-2) and 2,6-dichloro-8-nitroquinoline-3-carbaldehyde (QA-3) for mild steel (MS) in 1.0 M HCl at 303 K were studied by using electrochemical techniques, the density functional theory and molecular dynamic simulations. Experimentally obtained results showed that the quinoline derivatives are excellent inhibitors and that their adsorption on metal surface was found to follow that of the Langmuir adsorption model. Electrochemical findings revealed that quinoline derivatives behave as mixed-type inhibitors. These inhibitors increased the polarization resistance and simultaneously lowered the double layer capacitance, thereby confirming their high potentialities to protect metal against dissolution. Surface morphology of the MS surface in both the absence and presence of quinoline derivatives was examined using Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM). The mechanism of inhibition action of the studied quinolines was discussed in the light of the DFT and molecular dynamic (MD) simulations studies. New insights were brought by a diffusion model and radial distribution function (RDF). Theoretical results agree well with the experimental results.",
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Correlated experimental and theoretical study on inhibition behavior of novel quinoline derivatives for the corrosion of mild steel in hydrochloric acid solution. / Lgaz, Hassane; Salghi, Rachid; Subrahmanya Bhat, K.; Chaouiki, Abdelkarim; Shubhalaxmi; Jodeh, Shehdeh.

In: Journal of Molecular Liquids, Vol. 244, 01.10.2017, p. 154-168.

Research output: Contribution to journalArticle

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AU - Lgaz, Hassane

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AU - Subrahmanya Bhat, K.

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AU - Shubhalaxmi,

AU - Jodeh, Shehdeh

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