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 İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 269
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1016/j.molliq.2018.08.025
  • Dergi Adı: JOURNAL OF MOLECULAR LIQUIDS
  • Sayfa Sayısı: ss.398-406

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.