Electrocatalytic Degradation of Bisphenol A in Aqueous Solution
Using -PbO₂/Ti as Anode¹

Chengzhu Zhu^a,z, Caiju Hu^a, Jun Lu^b,z, Xiaohui Wang^a, Li Huang^c, and Tianhu Chen^a

^aSchool of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, P.R. China

^bCenter of Analysis and Measurement, Hefei University of Technology, Hefei 230009, P.R. China

^cWadsworth Center, New York State Department of Health, Albany, NY 12201-0509, USA

Received March 2, 2014

Abstract—In this paper, a novel Ti-base -PbO₂ electrode was successfully prepared by using electrodeposi-
tion. The prepared electrode was characterized by scanning electron microscopy (SEM), X-ray diffraction
(XRD) and anode polarization curves. The electrocatalytic degradation efficiency of bisphenol A by using the
novel Ti-base -PbO₂ as anode were examined as a function of supporting electrolyte types and concentrations,
electrolysis time, initial BPA concentration, initial pH and current efficiency. The results showed that the
removal efficiency of COD_Cr could reach up to 90.6% after 1.5-h electrolysis at initial bisphenol A concentration
of 20 mg L^–1, applied voltage of 20 V, electrode spacing of 7 cm, initial pH of 5, and NaCl concentration of 0.020
mol L^–1. The electrocatalytic degradation of bisphenol A was induced by hydroxyl radical and other oxidative
species attacking parent molecules. The degradation products mainly consisted of small straight chain com-
pounds, CO₂ and H₂O.

Keywords: -PbO₂ anode, electrocatalytic degradation, bisphenol A, OH radicals

DOI: 10.1134/S1023193515040163

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