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International Journal of Photoenergy
Volume 2016 (2016), Article ID 8730806, 8 pages
http://dx.doi.org/10.1155/2016/8730806
Research Article

Synthesis and Characterization of Graphene Oxide-Modified Bi2WO6 and Its Use as Photocatalyst

Department of Chemical and Biological Engineering, University of Ottawa, Ottawa, ON, Canada K1N 6N5

Received 7 May 2016; Revised 28 July 2016; Accepted 14 August 2016

Academic Editor: Xuxu Wang

Copyright © 2016 Xiaoyue Hu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A Bi2WO6 photocatalyst modified with graphene was synthesized in a two-step template-free hydrothermal process. The prepared samples were characterized to explore their properties. The photocatalytic activities of the prepared samples were investigated by degrading dye model, Rhodamine B (RhB), under visible light irradiation. This showed that the modified Bi2WO6 photocatalyst with 1.2 wt% of graphene greatly improved photocatalytic activity during the degradation of dye pollutants, compared to pure Bi2WO6. The enhancement can be interpreted as the integrated effects of ultrahigh charge carriers’ mobility and high adsorption of RhB on graphene. Additionally, effects including catalysts dosage amount, pH of RhB solution, and temperature of reactor on the photocatalytically degrading RhB were also studied and discussed.