Porous CoO nanosheets as a high-performance non-enzymatic sensor for glucose detection.

Novel porous CoO nanosheets (NSs) were synthesized on the flexible carbon cloth (CC) substrate by a facile hydrothermal method and applied to construct a non-enzymatic sensor for glucose detection. The sensor is based on the electro-catalytic oxidation of glucose on the surface of CoO NSs. Since this particular nanostructure can provide large surface area and more active sites, the CoO NSs non-enzymatic sensor exhibits excellent analytical performance, such as a high sensitivity (8506 μA mM cm), a fast response time (less than 6 s), low detection limit of 1 μM, good selectivity, and long-term stability. The results suggest that the porous CoO NSs have great potential applications in the development of sensors for enzyme-free detection of glucose.