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Inhibition of the Corrosion of Copper in a Sodium Chloride Solution Using 4-((4-dodecylphenylimino)methyl)phenol

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Figure 1.  FT-IR of 4-((4-dodecylphenylimino) methyl) phenol and the copper sheet modified with 4-((4-dodecylphenylimino) methyl) phenol
Figure 2. SEM of copper surfaces: (a) blank copper sheet; (b) blank copper sheet immersed in 0.5 mol/L NaCl solution for 1 h; (c) copper sheet self-assembled in DPMP-ethanol solution for 2 h; (d) copper sheet immersed in DPMP-ethanol solution for 2 h then immersed in 0.5 mol/L NaCl for 1 h
Figure 3.  Polarization curves of copper electrodes self-assembled in different concentrations of DPMP-ethanol solution for 2 h at room temperature: (a) bare copper; (b) 10-5 mol/L solution; (c) 10-4 mol/L solution; (d) 10-3 mol/L solution; (e) 10-2 mol/L
Figure 5.  Equivalent circuits to fit the impedance spectra with Warburg (a) and without Warburg (b) impedance
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