Coral-like Cu-Co-mixed oxide for stable electro-properties of glucose determination

Abstract

Nanowire-constructed coral-like spinel Cu-Co-mixed oxides were synthesized via hydrothermal reaction. Owing to the unique nanoarchitecture, the Cu-Co-O provide abundant electro-active sites and channels for ions transfer. And also because of the synergistic effect of copper and cobalt ions in the spinel crystal, the electrode modified with the Cu-Co-O material shows prominent electrocatalytic performance toward the oxidation of glucose. The rapid amperometric response to glucose was observed with a high sensitivity (8838.26 μA cm-2 mM-1), low detection limit (0.5 μmol/L) and fast response (within 1 s). The mild synthesis method and outstanding electrocatalytic performance make it promising for the reliable and durable determination of glucose.