Investigations of Adsorption of 1-Dodecyl-3-Methyl Imidazolium Chloride on Iron Surface as Corrosion Inhibitor

Abstract:

1-dodecyl-3-methyl imidazolium chloride ([C₁₂mim]Cl) was adsorbed on iron surface to form an inhibitive film. The adlayer inhibited the metal corrosion in 0.2 M H₂SO₄ efficiently. The inhibitive effect of [C₁₂mim]Cl was characterized by electrochemical impedance spectroscopy (EIS) and scanning electron microscopy (SEM). Impedance spectra demonstrated that the values of charge-transfer resistance increased when adding [C₁₂mim]Cl into 0.2 M H₂SO₄. The inhibition efficiency increased with increasing the concentration of [C₁₂mim]Cl. Scanning electron microscopy (SEM) analysis showed that the corrosion of iron surface had been inhibited by [C₁₂mim]Cl.

• Periodical: Advanced Materials Research (Volumes 306-307)
• Pages: 1545-1548
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.306-307.1545
• Online since: August 2011
• Authors: Qi Zhao, Mei Shan Pei, Wen Juan Guo, Sheng Nian Wang
• Keywords: Electrochemical Impedance Spectroscopy (EIS), Imidazolium, Iron, Scanning Electron Microscope (SEM)

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