Abstract
A promising polymer-modified electrode was established by electropolymerization of acriflavine on the carbon nanotube paste electrode (PAFMCNTPE). Moreover, the developed electrode was used for determining the catechol (CA) by electrochemical technique; cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The constructed electrode surface was characterized by field emission scanning electron microscopy (FE-SEM). The PAFMCNTPE portrayed the electrocatalytic response of CA with lower potential and enhanced peak current. The PAFMCNTPE exhibited the adsorption controlled and Nernst behavior for the electrochemical response of CA. Thus, the modified sensor could be apt for the facile and rapid detection of CA. The detection limit and quantification limit was evaluated to be 0.24 and 0.81μM, respectively, for the wide linear response in the concentration of CA within the range of 20–800μM. The PAFMCNTPE was found to be highly sensitive, reproductive, and stable. This electrode was further applied for the determination of CA in a tap water sample.
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