Electrochemical Reduction of Oxygen at Co(￥±)-3,4-bis(salicylidene diimine)toluene Complex supported Glassy Carbon Electrode

摘要

Electrochemical reduction of oxygen has been carried out at glassy carbon electrode and carbon ultramicroelectrode, the surface of which is modified with a new Co(ケ)-Schiff base complex, Co(ケ)-3,4-bis(salicylidene diimine)toluene in 1 M KOH solution. The results obtained from cyclic voltammetric and chronoamperometric experiments are consistent with the formation of the reasonably stable superoxide ions as a primary electron transfer reaction product. The exchange rate constant obtained for oxygen reduction is about 0.02 cm/s.