Poly-nile Blue Based Electrochemical Sensor for Catechol and Hydroquinone
An electrochemical sensor was developed for the electroanalysis of catechol (CC) and hydroquinone (HQ) using poly-nile blue (NB) modified glassy carbon electrode (MGCE) i.e., poly-NB/MGCE. The fabricated electrode showed an excellent electrocatalytic activity towards the electrooxidation of CC and HQ in 0.2 M phosphate buffer solution (PBS) of pH 7.4 by using cyclic voltammetry (CV) and differential pulse voltammetry (DPV) techniques. The effect of scan rate suggests the adsorption and diffusion controlled electrode process for CC and HQ respectively. The limit of detection of CC and HQ was found to be 53.2 nM and 31.5 nM by CV techniques. Overall, the sensitivity, selectivity, stability, linearity and reproducibility were obtained at the poly-NB/MGCE
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