Hierarchical CuO/NiO-Carbon Nanocomposite Derived from Metal Organic Framework on Cello Tape for the Flexible and High Performance Nonenzymatic Electrochemical Glucose Sensors

The orchestrated network of octahedron shaped Cu organic framework is developed via a simple aging protocol, and the partial cation swap reactions between Cu and Ni nodes in the Cu2-paddlewheel units of Cu-MOF generates Cu-Ni-MOF with similar octahedron morphology. Exploiting Cu-Ni-MOF as a template, the uniformly disseminated and tightly pinned CuO/NiO spherical nanoparticles with hierarchical carbon are developed under controlled thermal and atmospheric conditions. The MOFs and metal oxide-carbon nanocomposites coated over the cello tapes (CTs) are exploited as electrochemical sensor probes for nonenzymatic glucose sensing. It adequately swamps the impediments of prevailing glucose sensor probes including time depletion, high cost, monotonous electrode cleaning and modification processes, and use of swellable inactive binders. Owing to the subsistence of an interconnected network and synergistic effect of bimetallic oxides, CuO/NiO-C expedites the considerable electrocatalytic behavior toward glucose sensing. Furthermore, the fabricated CuO/NiO-C/CT exercises the diagnosis of glucose in human serum samples. These flexible electrochemical sensor probes acquiesce the device to sustain deformation with high efficacy, opening an appealing access for the evolution of cost-efficient, binder-free, reliable, flexible, and eco-friendly sensing platforms for the development of futuristic electrochemical sensor devices.