Hydrogen Peroxide Biosensors Based on Horseradish Peroxidase and Hemoglobin

This review focuses recent contributions in the development of the electrochemical biosensors for hydrogen peroxide (H 2 O 2 ), based on the Horseradish Peroxidase (HRP) and Hemoglobin (Hb) modified electrodes.Various modified electrodes have been used for the determination of H 2 O 2 by using electrochemical methods.HRP and Hb are the mostly used materials for the modification of electrodes.Here, we summarize the recent trends of the modification of electrodes, as well as development of the electrochemical H 2 O 2 biosensors.In addition, the detection mechanism of H 2 O 2 for different modified electrodes has been described.