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Journal of Nanomaterials
Volume 2016 (2016), Article ID 5646175, 7 pages
http://dx.doi.org/10.1155/2016/5646175
Research Article

Photocatalytic Reduction Activity of Codoped with F and Fe under Visible Light for Bromate Removal

1Department of Civil Engineering, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China
2College of Civil Engineering and Architecture, Zhejiang University of Technology, 18 Chaowang Road, Hangzhou 310014, China

Received 19 August 2016; Revised 25 October 2016; Accepted 1 November 2016

Academic Editor: Ramasamy Karvembu

Copyright © 2016 Yan Zhang 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

The presence of bromate in water is a well-known problem because of its toxic effects on human health, particularly its carcinogenic potential. Photocatalytic reduction is an attractive process for bromate removal. F- and Fe-codoped TiO2 (F-Fe-TiO2) with a facet was successfully prepared, and its bromate-removal activity under visible light was examined. The microstructure, morphology, and chemical state of the doping elements and the optical property of the photocatalysts were examined using transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), electron paramagnetic resonance (EPR), photoluminescence spectroscopy (PLS), and UV-Vis diffuse reflectance spectra (DRS). The results indicate that the optical properties of F-Fe-TiO2 with the facet and cuboid morphology were obviously improved and its photocatalytic activity was significantly enhanced. The bromate solution of 100 μg/L was thoroughly removed with 0.5 g/L dosage of 1.0% F- and 0.08% Fe-codoped TiO2 composite within 1 hour under visible light.