Like I am doing CV for porphyrins and even for TPP I get good two one electron reduction peaks in DCM at 0.5 V/s but at low scan rate it is difficult.What could be the possible reason behind it?
Nachiket Gokhale
Dear Nivedita,
The peak height is directly proportional to the square root of the scan rate. Hence higher the scan rate higher the peak. Hence you may not see a visible peak at 0.1V/s
Ref: https://en.wikipedia.org/wiki/Randles%E2%80%93Sevcik_equation
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Nivedita Rana
For porphyrin chemistry most CVs are recorded at a scan rate of 0.1 V/s.
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Gamil Gamal Hasan
Generally,At low scan rate, there are usually several reactions, which leads to the appearance of different oxidation and reduction peaks. Usually, increasing the scan rate is to avoid these accidental reactions.
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