NiCo2O4 Nanorods Decorated MoS2 Nanosheets Synthesized from Deep Eutectic Solvents and Their Application for Electrochemical Sensing of Glucose in Red Wine and Honey

In this work, cobalt-nickel oxide nanorods decorated molybdenum disulfide nanosheets (NiCo2O4-MoS2) nanocomposite material was synthesized by a simple ionothermal synthesis method in deep eutectic solvents, after which, a glucose sensor based on the (NiCo2O4-MoS2) nanocomposites was constructed. The nanocomposite material was characterized by X-ray diffractometer (XRD), X-ray photoelectron spectroscopy (XPS) and scanning electron microscope (SEM). At the potential of +0.5823 V (vs. NHE), the electrochemical response of the sensor was linear with the glucose concentration ranging from 0.70 μM to 13.78 mM and the sensor exhibited excellent electrocatalytic performance toward the oxidation of glucose with a low detection limit of 0.23 μM (S/N = 3). In addition, it also has a good selectivity, stability, repeatability and reproducibility. Furthermore, the sensor was used to detect the glucose in honey and red wine. All of these suggested that the NiCo2O4-MoS2 nanocomposites might be promising candidate nanomaterials for constructing electrochemical sensors to detect glucose.