Specific Adsorption of Halide Ions on Iron Surface: A Combined Electrochemical and Monte Carlo Simulation Investigation


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Guo L., Ou Y., Shen X., KAYA S. , Shi W., Zhang R., ...Daha Fazla

INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE, cilt.12, ss.7064-7074, 2017 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 12 Konu: 8
  • Basım Tarihi: 2017
  • Doi Numarası: 10.20964/2017.08.04
  • Dergi Adı: INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
  • Sayfa Sayıları: ss.7064-7074

Özet

The specific adsorption effect of halide ions (i.e., Cl-, Br-, I-) on the surface of mild steel in acid media has been explored by electrochemical and Monte Carlo simulating methods. The electrochemical impedance spectroscopy (EIS) and Tafel polarization results demonstated that the mild steel was protected from corrsion to some extent when KX (X=Cl, Br, I) exist. The absorption strength was determined by calculating a customized parameter, namely, adsorption efficiency, which suggest that absorption ability, in descending order of magnitude, was I-, Br-, and Cl-. Moreover, Monte Carlo simulation was employed to look for the most stable adsorption configurations of halide ions onto Fe(110) surface. Our experimental findings were in accordance with the theoretical analysis.