Abstract
3D binder-free CuO nanosheets wrapped nanofilms has been in situ synthesized on Cu substrate by a simple and facile procedure, with an aim of fabricating high-performance glucose sensor. The complex morphology that the nanosheet grown on Cu subtract evolved into nanofilms and eventually converged to nanowires, is benefit for the mass transport and electro-catalysis. Compared the ECSA of the CuO modified electrode to that of the bare Cu electrode, the effective surface area during the electro-catalysis of the CuO/Cu electrode is much larger. The glucose sensor based on CuO products exhibited high sensitivity (4201μAcm−2mM−1), low detection limit (0.5μmol/L) and quick response time (0.7s). And the stability and selectivity is also fantastic. According to the serum sample analysis, it transpires that the CuO/Cu sensor displayed excellent recovery compared to the concentration values measured by medial method. So this material shows great potential applications in glucose sensors.
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