A novel thiophene Schiff base as an efficient corrosion inhibitor for mild steel in 1.0 M HCl: Electrochemical and quantum chemical studies

Tezcan F., Yerlikaya G., Mahmood A., KARDAŞ G.

JOURNAL OF MOLECULAR LIQUIDS, cilt.269, ss.398-406, 2018 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 269
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1016/j.molliq.2018.08.025
  • Dergi Adı: JOURNAL OF MOLECULAR LIQUIDS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.398-406
  • Anahtar Kelimeler: Mild steel, Schiff base, EIS, Polarization, ICP-OES, DFT, HYDROCHLORIC-ACID SOLUTION, CARBON-STEEL, THEORETICAL EVALUATION, CHLORIDE SOLUTION, ORGANIC-COMPOUNDS, DERIVATIVES, MEDIA, ADSORPTION, POLARIZATION, PERFORMANCE
  • Çukurova Üniversitesi Adresli: Evet

Özet

This study presents the synthesis, structural characterization, and inhibition efficiency of a new sulphur containing Schiff base (4-((thiophene-2-ylmethylene)amino)benzamide) (4-TAB) on mild steel in 1.0 M HCl solution. The inhibition efficiency of the 4-TAB is analysed by using electrochemical analysis, solution assay analysis, and theoretical calculation. Electrochemical impedance spectroscopy and linear polarization resistance results show the highest inhibitor efficiency of 96.8% and 96.5%. respectively. The potentiodynamic polarization measurements indicate a decreasing corrosion rate from 9.104 to 0.481 mm year(-1) by addition of 4-TAB. Theoretical calculations are performed using the density functional theory to further confirm and compare our experimental results. (C) 2018 Elsevier B.V. All rights reserved.