1. Department of Environmental Science and Engineering, Huaqiao University, Xiamen 361021, China; 2. Industrial Wastewater Treatment Engineering Research Center of Fujian Provincial, Xiamen 361021, China
Abstract：Advanced electrochemical oxidation is one technical method for organic dye wastewater treatment, its application is limited by the high cost, easy toxicity and deactivation of noble metal electrode. Therefore, the cheap and easily prepared Graphene oxide (GO) instead of Graphene (GN) was used for the reactive black 5 (RBk5) dye electrocatalytic degradation. The structure and electrochemical properties of the prepared material was analyzed by transmission electron microscopic (TEM), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared (FTIR), Raman spectroscopy, cyclic voltammetry (CV), and electrochemical impedance spectra (EIS). It was indicated that the GO had high electronic transfer rate, excellent hydrophilicity and electrocatalytic activity. Effects of various factors such as different concentration of RBk5, applied current, electrolyte and initial pH were evaluated and investigated. The results showed that the electrolyte had a great influence on the material performance. The removal rate of RBk5 could reach 100% under the conditions of RBk5 concentration of 10mg/L, applied current of 20mA, reaction time of 35min and NaCl as electrolyte.
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