Hydroquinone sensor using carbon paste electrode modified by nickel oxide nanoparticles: a voltammetric investigation

Here, the synthesis of nickel oxide nano particle (NiO NPs) by using a co-precipitation method and characterised by XRD, SEM and EDS techniques. NiO NPs utilised as modified carbon paste electrode (MCPE) with sensing environmental pollutants. The NiO/MCPE brings the excellent sensitivity electrochemical determination of hydroquinone (HQ) in existence of catechol (CC) by using cyclicvoltammetry (CV). The experimental parameter like pH and sweep rate study were carried out for the determination HQ, the NiO/MCPE is utilised for the simultaneous investigation of CC and HQ, The detection limit for HQ were established to be 0.716 µM and 2.38 µM, respectively. For additional environmental contaminants, the suggested modified electrode is applicable.