Abstract In the present research, the inhibitive potency of (E)-1-(phenyldiazenyl)naphthalen-2-ol (EPNO) for carbon steel (CS) in molar HCl acid was investigated using potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS). Based on the examination of Tafel data, it was revealed that EPNO displayed a mixed-type nature. EIS plots evinced that increasing the concentration of EPNO resulted in a significant 12-fold increase in polarization resistance (Rp) and a corresponding alteration in the double layer capacitance (Cdl) from 116.2 to 45.9 μF·cm–2 . The inclusion of 10–3 M of EPNO to the solution resulted in a maximum inhibition efficiency of 91.7%. Thermodynamic activation descriptors were also assessed as a function of EPNO concentration. The adsorption of EPNO on the CS substrate followed the Langmuir isotherm. The formation of a barrier layer was confirmed by scanning electron microscopy (SEM) coupled with energy-dispersive X-ray spectroscopy (EDX) and UVVisible assays. Overall, the findings revealed that EPNO effectively provided an adequate

Title

Ismail

Publisher

warad

Publisher Country

Palestine

Publication Type

Prtinted only

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Year

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