A simple and sensitive voltammetric sensor Gr/Bi2O3/GCE is being reported for the quantification ofEllagic acid (EA). The developed sensor was characterized by Scanning Electron Microscopy-EnergyDispersive X-Ray (SEM-EDX), Electrochemical Impedance (EI), Fourier Transformed Infrared(FTIR) and X-Ray Diffraction (XRD). The Electrochemical measurements were performed usingsquare wave and cyclic voltammetry. The fabricated sensor exhibits an excellent catalytic responsetowards the oxidation of EA with a well-defined oxidation peak at 0.6 V in Britton Robinson buffer atpH 3.0. Variation in the peak response through solution variables viz. pH and amount of analyte hasalso been studied. The fabricated sensor depicted an excellent linear calibration curve for EA withsensitivity of 0.07 nM. The fabricated sensor is proficient to quantify EA effectively without anyinterference. The analytical application of the sensor has been authenticated by quantifying the EA inreal samples.
展开▼
