Abstract
This article presents the effect of hematite phase iron oxide (alpha-Fe2O3) on the electrocatalytic activity of graphene oxide (GO) for electrochemical detection of hydroquinone in aqueous solution. The different weight percentage (wt%) (1, 2 and 3%) of alpha-Fe2O3 added GO nanocomposites were synthesized by wet-impregnation method. The cyclic voltammetry studies using 2% alpha-Fe2O3-GO modified glassy carbon electrodes was found to exhibit an excellent electrocatalytic activity than alpha-Fe2O3 and GO electrodes that may be due to the synergistic effect of alpha-Fe(2)O(3)nanoparicles and GO sheet. In addition, the modified electrode exhibited a good reproducibility as well as long-term stability. Hence, the 2% alpha-Fe2O3-GO can be a promising catalytic material for electrochemical sensor applications.