Electrochemical Sensor Based on Nanocomposite of Multi-Walled Carbon Nanotubes / TiO 2 Nanoparticles in Chitosan Matrix for Simultaneous and Separate Determination of Dihydroxybenzene Isomers

Abstract

© 2018 The Electrochemical Society. The present research was conducted to develop a potent electrochemical sensor based on multi-walled carbon nanotubes and TiO nanoparticles in chitosan matrix (CS-MWCNTs+TiO2NPs). In the CS-MWCNTs+TiO2NPs nanocomposite film with excellen catalytic activities, good electrical conductivities and high surface areas of MWCNTs and TiO2NPs, the simultaneous determinatio of hydroquinone (HQ), catechol (CC) and resorcinol (RS) with proper analytical performance was realized in the individual o triple-components solution in comparison with the bare glassy carbon electrode (GCE) and the single component modified GCE The linear response of HQ, CC and RS were obtained in the ranges of 0.4–276.0 μmol dm−3, 0.4–159.0 μmol dm−3 and 3.0–65 μmol dm−3 and the detection limits (S/N = 3) were 0.06 μmol dm−3, 0.07 μmol dm−3, and 0.52 μmol dm−3, respectively. In th real water sam le anal sis b the develo ed sensor satisfactor results were obtained.