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(A) UV spectra of ChCl-TA and ChCl-TA-Fe3+ complex. Inset: pictures of ChCl-TA and ChCl-TA-Fe3+. (B) Pictures of steel surfaces before and after 24 h of exposition to NaCl 0.01 M aqueous solution. Nyquist plot (C) and polarization curves (D) of samples after 24 h of immersion in a NaCl 0.01 M aqueous solution.
