Mn₂O₃ porous microsheets prepared by a chemical precipitation method as an effective electrochemical sensor for non-enzymatic glucose detection

To conveniently construct an electrochemical non-enzymatic glucose sensor, Mn₂O₃ porous microsheets are utilized as electrode materials in glucose detection. Mn₂O₃ porous microsheets have been prepared by a facile chemical precipitation procedure. The Mn₂O₃ porous microsheets possess a uniform porous structure, which display a nitrogen adsorption–desorption surface area of 38.6 m²/g and the average pore diameter of 16.0 nm. The pores on the Mn₂O₃ porous microsheets afford large specific surface area. Electrochemical tests reveal that the Mn₂O₃ porous microsheets electrode possesses a remarkable capability in glucose detection. Mn₂O₃ porous microsheets electrode shows a wide response range (20 ~ 1.90 mM) and a high glucose detection sensitivity up to 6000 μA mM⁻¹ cm⁻². Moreover, the value of detection limit is 12 μM (S/N = 3). The anti-interference and stability tests prove that the Mn₂O₃ porous microsheets electrode possesses satisfactory selectivity and excellent stability. These results indicate the Mn₂O₃ porous microsheets electrode is potential for developing the non-enzymatic detecting devices.