A new 15% Ni-doped α-Fe₂O₃ nanoplates modified glassy carbon electrode (GCE) was fabricated and used for the sensing of uric acid (UA). The Ni-doped α-Fe₂O₃ nanoplates were prepared by hydrolysis method. The structure and morphology of the sample was characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), UV-Visible spectroscopy (UV-Vis) and field emission scanning electron microscopy (FE-SEM). The modified electrode was prepared by drop coating method. The electrochemical sensing behavior of the Ni-doped α-Fe₂O₃ modified GCE was investigated by cyclic voltammetry (CV). Ni-doped α-Fe₂O₃ modified electrode exhibits a 150 mV shift in the oxidation potential of UA in the cathodic direction with a remarkable enhancement of the current response than the bare GCE. It is much promising for the modified films to be used as an electrochemical sensor for the detection of UA.
Keywords: Ni-Doped α-Fe2O3; Hydrolysis; Nanoplates; Sensor; Uric Acid;