Add time:08/08/2019         Source:sciencedirect.com

A nanocomposite was fabricated comprising nanoparticles of carbon and poly(ortho-aminophenol) by electropolymerization technique. The nanocomposite was characterized by field emission-scanning electron microscopy. The kinetics of charge transfer between the nanocomposite and the adjacent electrolyte was measured using cyclic voltammetry (CV). The kinetics of the electroreduction of iodate on the nanocomposite surface was then evaluated by CV and chronoamperometry. Iodate was electroreduced by low-valence redox species of poly(ortho-aminophenol) in an electrocatalytic manner. The nanocomposite was applied as an amperometric sensor for iodate, and an amperometry route was proposed for determination of iodate. Sensitivity and detection limit of the amperometry method were attained as 242.6 mA L mol−1 cm−2 and 0.01 mmol L−1, respectively.

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