Anovelmodified carbon ceramic electrode using CuI asmodifier was fabricated. The copper iodidemodified
sol-gel derived carbon ceramic (CIM-SGD-CC) electrode has high catalytic ability for electrooxidation
of hydrogen peroxide. The charge transfer coefficient () and exchange current density (j0) for the
modified electrode were calculated. It has been shown that using the CIM-SGD-CC electrode, hydrogen
peroxide can be determined by cyclic voltammetry and amperometry with limit of detections 26 and 0.31
μmol L–1, respectively. The advantages of the modified CCE are its good stability and reproducibility of
surface renewal by simple polishing, excellent catalytic activity.
