2.3. Measurement of Electrochemical Characteristics of Active Species on Composite Electrodes

The cerium nitrate hexahydrate Ce(NO3)3·6H2O, as an active species, was dissolved in solutions of 0.1 M CH3SO3H supporting electrolytes. The CV test was carried out on various composite electrodes in 0.01 M [Ce(NO3)3·6H2O]/0.1 M CH3SO3H solution. The electrochemical properties were defined from the CV test data.

The iodine (I2)/ascorbic acid solutions were obtained through dissolving the potassium iodate (KIO3) and potassium iodide (KI) in H2SO4 acidic reaction. The reaction equation is expressed as Equation (1).

The electrochemical properties were assessed using the CV experiment for 1.0 M I2/2.0 M H2SO4 solutions with different ascorbic acid content.

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