EC1.3 - Synthesis of ZnMn2O4 microspheres for electrochemical sensing of hydrogen peroxide

In this work, ZnMn 2 O 4 microspheres (ZMO-MSs) were synthesized by solvothermal method.The synthesized microspheres were characterized by X-ray diffraction, scanning electron microscopy, energy-dispersive spectroscopy and X-ray photoelectron spectroscopy.The ZMO-MSs exhibited excellent electro-reduction performance towards H 2 O 2 in alkaline media.The ZMO-MSs modified glassy carbon electrode was investigated by cyclic voltammetry and amperometry.Linear amperometric responses for H 2 O 2 was obtained in a wide range from 0.02 to 15 mM with detection limit of 0.13 M and high sensitivity of 277.1 mA mM -1 cm -2 .The proposed sensor was successfully applied for the determination of H 2 O 2 in milk, indicating a promising platform for practical applications.