Abstract
The aim of this research study was to apply experimental design in the optimization of influencing parameters on the corrosion inhibition efficiency of Methyl Green (MG) dye using the weight loss (WL) technique. Corrosion inhibition of carbon steel (CS) in the presence of different concentrations of MG dye in 1 M HClO4 solution has been studied. Results showed that inhibition efficiency (IE) increased with increasing concentration of MG dye up to 1.0 × 10−3 mol/L, and decreased with raising temperature. The free energy values calculated from the Langmuir adsorption isotherm for MG dye (-36.24 to -38.04 kJ/mol) suggested that MG dye molecules adsorbed onto CS surface via a physicochemical mechanism.
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