Studies on Corrosion Inhibition Effect of o-Vanillin – Tryptophan Schiff Base on Low Carbon Steel in Acid Medium Using Density Functional Theory

Authors

  • Archana T V  Department of chemistry, Pioneer kumaraswamy college, Nagercoil, Tamil Nadu, India
  • G. Rexin thusnavis  Department of chemistry, Pioneer kumaraswamy college, Nagercoil, Tamil Nadu, India
  • P. Palanisamy  Department of chemistry, Pioneer kumaraswamy college, Nagercoil, Tamil Nadu, India

Keywords:

Low carbon steel, Schiff base, corrosion inhibitors, Weight loss, DFT

Abstract

The inhibition effect of o-Vanillin – Tryptophan Schiff base (2- Hydroxy-3-methoxybenzylideneamino)-3-(1H-indol-3-yl) propanoic acid has been studied for low carbon steel corrosion inhibition in acid medium. The inhibition efficiency of Schiff base inhibitor was investigated using weight loss method and Density Function Theory (DFT/B3LYP-6-31G (d)) methods. The DFT studies reveals the corrosion control mechanism by the use of quantum chemical parameters such as EHOMO, ELUMO, Energy gap(ΔΕ), dipole moment (µ), electronegativity (χ), electrophilicity index (ω), electron affinity (A), global hardness (η), global softness (σ), ionization potential (I) and the fraction of electrons transferred (∆N) and the fraction of electron transferred (ΔΝ). The results explain that the Schiff base (2- Hydroxy-3-methoxybenzylideneamino)-3-(1H-indol-3-yl) propanoic acid is a new inhibitor for corrosion inhibition of low carbon steel in acid medium.

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International Journal of Scientific Research in Science and Technology

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Published

2021-04-10

Issue

Volume 9, Issue 1, March-April-2021

Section

Research Articles

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How to Cite

[1]
Archana T V, G. Rexin thusnavis, P. Palanisamy, " Studies on Corrosion Inhibition Effect of o-Vanillin – Tryptophan Schiff Base on Low Carbon Steel in Acid Medium Using Density Functional Theory, International Journal of Scientific Research in Science and Technology(IJSRST), Online ISSN : 2395-602X, Print ISSN : 2395-6011, Volume 9, Issue 1, pp.363-368, March-April-2021.