Abstract
In this study, a simple, ultrasensitive nafion/Co doped BFO/GCE sensor was developed for the electrochemical detection of Hydrogen Peroxide. X-ray diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR) and Brunauer– Emmett-Teller (BET) were used for morphological characterizations of the synthesized cobalt doped bismuth ferrite nanoparticles. The electrochemical behaviors of nafion/Co doped BFO/GCE were examined by cyclic voltammetry. In contrast to the unmodified glassy carbon electrode, nafion/Co doped BFO/GCE revealed distinct and undistorted peak, with much enhanced peak current showing electrocatalytic property of film that may be accounted for increased conductivity and surface area of the nafion/Co doped BFO. Under optimum conditions, amperometric current response of nafion /BFO/GCE showed linear dependence on concentration of H2O2 in the range 10 μM to 100 μM with a regression equation of I = 0.0446C + 5.6 (R2 = 0.9793) with LOD of 0.035. The obtained results demonstrated that the designed nafion/Co doped BFO could be applied for electrochemical sensors.
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