How can one use the electrochemical impedance plots to distinguish or describe the difference between the chemisorption or physisorption of an adsorbate on the metal surface?
After my knowledge can not be used for the stated purpose . Even if it were possible I would not know the interpretation procedure .
Hello Akshay,
Impedance spectroscopy is a interfacial technique, i.e., measures the dieletric properties of double layer between electrode and electrolyte. Adsorpotion is a process that can be seen in impedance spectra directly by an inductance loop (or negative impedance values like maganese corrosion mechanism) or indirectly by changing the Rct (like a corrosion inhibitor in a steel electrode). I really don't know if you can differentiate a chemsorption/physisorption only by impedance analysis because both spectra situations can occur.
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