Abstract
Abstract The porous NiCo2O4 nanobelt arrays on nickel foam has been fabricated through a chemical co-precipitation route. Due to this porous NiCo2O4 nanobelt nanostructure, this electro/ion efficiency transfer between electrode and electrolyte during the electrochemical reaction process. The electrochemical detection of glucose is investigated by cyclic voltammetry and single-potential amperometry measurement in a three-electrode system. The porous NiCo2O4 nanobelt arrays on nickel foam sensor exhibits high sensitivity (5000 μA mM−1 cm−2) in a wide range (0.9–67.2 μM) and 727 μA mM−1 cm−2 in the linear range (0.067–1.373 mM). This porous NiCo2O4 nanobelt sensor exhibits a low limit of detection of 0.9 μM and a fast sensing performance of 4 s. The excellent electrochemical performances originate from the improved electronic conductivity as well as rich redox reaction sites of the sensor material surface. Our results indicate that the porous NiCo2O4 nanobelt arrays on nickel foam is a great potential sensor for non-enzyme glucose detection.
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