Comprehensive adsorption characteristics of a newly synthesized and sustainable anti-corrosion catalyst on mild steel surface exposed to a highly corrosive electrolytic solution

Raman Kumar, Hansung Kim, Reddicherla Umapathi, Ompal Singh Yadav, Gurmeet Singh

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

A new environmental-friendly imine compound viz. 4-(2-amino-3-methylphenyl)imino)methyl)benzaldehyde (AMIB) was sustainably synthesized at room temperature utilizing green solvents, reagents and assessed as an anti-corrosion catalyst for the commercially important mild steel (MS) alloy subjected to highly aggressive 0.5 M sulphuric acid (H2SO4) solution by several electrochemical methods (polarization techniques and Electrochemical impedance spectroscopy) allied with various surface characterization techniques such as attenuated total reflectance (ATR), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and atomic force microscopy (AFM). Furthermore, the experimental results were theoretically supplemented by density functional theory (DFT) treatment. AMIB delivered significant corrosion protection even at very low concentrations and at various temperatures. The findings from electrochemical and surface characterization techniques were also supplemented by temperature kinetics study. The adsorption mechanism of AMIB molecules on metal substrate follow Langmuir's adsorption isotherm. The overall corrosion mitigation mechanism assessed from various techniques and methods was found to be comprehensive in nature. The present study may pave the way for combating corrosion with this cost effective and eco-friendly strategy.

Original languageEnglish
Pages (from-to)37-48
Number of pages12
JournalJournal of Molecular Liquids
Volume268
DOIs
Publication statusPublished - 2018 Oct 15

Bibliographical note

Funding Information:
This research work was supported by Korea Institute of Energy Technology Evaluation and Planning (KETEP) ( 20162010103990 ) grant funded by the Korean Ministry of Trade, Industry and Energy. All the authors would also like to thank the financial support provided from UGC-Major Research Project ( 42-319/2013 , SR) and the research facilities provided by the Department of Chemistry and the University Science Instrumentation Centre (USIC), University of Delhi, India.

Publisher Copyright:
© 2018

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

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