Fe-Doped NiMoO4 Nanoparticles as New Non-Enzymatic Catalyst in Glucose Sensing

In this work, a new non-enzymatic sensor for the determination of glucose was constructed using Fe-doped NiMoO 4 nanoparticles (NiFeMoO 4 ). Hydrothermal and calcination techniques were successfully used to synthesis different proportion nanoparticles of Ni 1−x Fe x MoO 4 (x = 0, 0.01, 0.03, 0.05). A set of electrochemical measurements demonstrated that all of the Ni 1−x Fe x MoO 4 have electrocatalytic properties to glucose. Especially, Ni 0.99 Fe 0.01 MoO 4 (x = 0.01) displayed the most excellent amperometric response to glucose in the range of 0.01∼13 mM with a limit of detection (LOD) of 0.29 μ M (S/N = 3). This amperometric sensor also showed satisfactory anti-interference performance and stability. More significantly, the sensor’s applicability was tested using a glucose assay in actual serum samples with acceptable results.