Hierarchical hollow CuO/Cu2O and Cu2O/Cu/C derived from metal-organic framework for non-enzymatic oxidation toward glucose

A hierarchical tubular MOF-74 (Cu), which is regarded as self-sacrificed template, can be calcined directly in air atmosphere and Ar atmosphere, respectively, for preparing composites of CuO/Cu2O and Cu2O/Cu/C with hierarchical hollow structure. The obtained hollow copper-based oxide composites possess higher sensitivity, lower limitation of detection and wider detection range toward non-enzymatic detection of glucose than corresponding solid copper-based oxide composites.