The poly-hematoxylin films undoped (p-HX) and doped with strontium (p-HX-Sr) were prepared on the platinum electrodes (Pt) using cyclic voltammetry. The influence of experimental parameters, such as: anodic potential and number of voltammetric cycles on the films synthesis was investigated by electrochemical impedance spectroscopy (EIS). The results showed that, the optimal conditions to obtain the poly-hematoxylin films on platinum electrode from 10−2 mol L−1 NaNO3 solution, were found by recording 10 voltammetric cycles at an anodic potential of 1.5 V. Electrocatalytic activity of the poly-hematoxylin-platinum (p-HX/Pt) and poly-hematoxylin-strontium-platinum (p-HX-Sr/Pt) electrodes was tested for electrochemical degradation of benzocaine using UV-Vis spectrophotometry. Both, the mechanisms of hematoxylin (HX) polymerization, as well as benzocaine degradation were proposed. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013
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