The Electrochemical Behavior and Detection of Catechol on Nanoplatinum Modified Glassy Carbon Electrode

The electrochemical oxidation behavior of catechol on platinum modified glassy carbon electrode has been investigated by cyclic voltammetry technique.The experiment results indicated that the PtNPs/GC electrode significantly improved the electrocatalysis activity toward the oxidation of catechol.The oxidation peak current was increased with the temperature.However,the oxidation peak potential was decreases with the increase of temperature.The polymerization reaction of catechol can occur in the normal temperature to form an electronically conducting polymer.The oxidation peak current of catechol is linear to the catechol concentration in the range of 1.0×10-6 mol/L~5.0×10-5 mol/L.The detection limit is 2.9×10-7 mol/L.