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Electrochemical oxidation assessment and interaction of 2-aminoethanol and N, N-diethylethanamine propagation in acidic medium

  • Physicochemical Problems of Materials Protection
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Abstract

Electro-oxidation and inhibitor performance of copper specimens in 1 M hydrochloric acid solution was investigated at room temperature by linear potentiodynamic polarization and gravimetric method in the presence of 2-aminoethanol (A) and N, N-diethylethanamine (D) as an inorganic inhibitor. The effect of the inhibitory concentration on the corrosion behavior of copper was studied over 288 hrs at 298°K. The inhibitory efficiency rise up to 96% for single induced and 98% for synergistic behavior. The adsorption mechanism characteristic was supported by SEM/EDX analysis and adsorption isotherm. From all indication, the inhibitive efficiency of these compounds majorly depends on their molecular structure and concentration. The blocking effects of the surface interface were also explained on the basis of the inhibitor active action. 2-aminoethanol and N, N-diethylethanamine inhibits copper in 1 M HCl by strictly affecting both the anodic and cathodic sites. Portion of the surface covered calculated was also found to follow Langmuir adsorption isotherm.

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Authors and Affiliations

  1. Department of Chemical, Metallurgical and Materials Engineering, Tshwane University of Technology, P.M.B. X680, Pretoria, South Africa

    O. S. I. Fayomi & A. P. I. Popoola

  2. Department of Mechanical Engineering, Covenant University, P.M.B 1023, Ota, Ogun State, Nigeria

    O. S. I. Fayomi

Authors
  1. O. S. I. Fayomi
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  2. A. P. I. Popoola
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Correspondence to O. S. I. Fayomi.

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Fayomi, O.S.I., Popoola, A.P.I. Electrochemical oxidation assessment and interaction of 2-aminoethanol and N, N-diethylethanamine propagation in acidic medium. Prot Met Phys Chem Surf 51, 891–898 (2015). https://doi.org/10.1134/S2070205115050081

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  • DOI: https://doi.org/10.1134/S2070205115050081

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