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The water-soluble and green thiourea-chitosan (TUCTS) was synthesized and characterized by the Fourier transform infrared spectroscopy (FT-IR) and elemental analysis method. The corrosion inhibition performance and behavior of TUCTS for… Click to show full abstract
The water-soluble and green thiourea-chitosan (TUCTS) was synthesized and characterized by the Fourier transform infrared spectroscopy (FT-IR) and elemental analysis method. The corrosion inhibition performance and behavior of TUCTS for Q235 steel in 1 mol·L HCl were investigated by weight loss method, surface morphology analysis, potentiodynamic polarization curves and electrochemical impedance spectroscopy (EIS). It is found that the synthesized TUCTS is an excellent corrosion inhibitor and the inhibition efficiency exceeds 90% at 25°C. The inhibitor acts as a mixed type inhibitor by geometrical blanketing effect. Thermodynamics analysis demonstrates that the adsorption of TUCTS on Q235 steel surface fit in with the Langmuir model. The adsorption type is both physical and chemical adsorption but chemisorption dominates.
Journal Title: International Journal of Electrochemical Science
Year Published: 2019
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