A novel high-sensitivity non-enzymatic glucose sensor via Cu2O@CuO@NiCo2O4 nanowires as catalyst

Abstract

Glucose sensors are being urgently needed in many fields and it is very necessary to develop efficient electrode materials for electroanalytical glucose sensor. Herein, Cu2O@CuO@NiCo2O4 nanowires (NWs) are successfully synthesized via a hard-template method for an electrochemical sensor, in which we used Cu nanowire as a template. The results show the Cu2O@CuO@NiCo2O4 NWs-based glucose sensor exhibits a high sensitivity up to 1423.912 μAcm−2mM−1, a linear range up to 5. 664 mM, and 600 nM (S/N = 3) lower limit of detection (LOD), accompanied by good selectivity and stability. In principle, such findings demonstrate that Cu2O@CuO@NiCo2O4 NWs could be a promising electrode material in enzyme-free glucose sensors.