Anticorrosive properties of Hexa (3-methoxy propan-1,2-diol) cyclotri-phosphazene compound for carbon steel in 3% NaCl medium: gravimetric, electrochemical, DFT and Monte Carlo simulation studies

Omar Dagdag*, Ahmed El Harfi, Mustapha El Gouri, Zaki Safi, Ramzi T.T. Jalgham, Nuha Wazzan, Chandrabhan Verma, E. E. Ebenso, U. Pramod Kumar

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

69 Scopus citations

Abstract

The corrosion inhibition performance of Hexa (3-methoxy propan-1,2 diol) cyclotriphosphazene (HMC) on carbon steel in 3% NaCl solution was investigated by weight loss (WL), potentiodynamic polarization (PDP), electrochemical impedance spectroscopy (EIS) measurements, Density functional theory (DFT) and Monte Carlo (MC) simulation. The corrosion inhibition efficiency at optimum concentration (10 −3 M) is 99% of HMC at 298 K. The corrosion inhibition efficiency at 10 −3 M decreases with increase in temperature. The adsorption of HMC on the surface of carbon steel obeyed Langmuir isotherm. Potentiodynamic polarization study confirmed that inhibitor anodic-type. DFT and Monte Carlo (MC) simulations based computational approaches were under taken to support the experimental findings. DFT studies revealed that HMC interact with metallic surface through donor-acceptor interactions in which the anionic parts act as electron donor (HOMO) and cationic parts behaved as electron acceptor (LUMO). The MC simulations study showed that studied HMC adsorb spontaneously on Fe (110) surface.

Original languageEnglish
Article numbere01340
JournalHeliyon
Volume5
Issue number3
DOIs
StatePublished - Mar 2019
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2019

Keywords

  • Inorganic chemistry
  • Materials chemistry
  • Theoretical chemistry

ASJC Scopus subject areas

  • General

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