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Journal of Chemistry
Volume 2015, Article ID 414269, 5 pages
Research Article

Visible Light Catalytic Degradation of Aniline Wastewater over Multishaped BiOBr Microcrystals

Chemical Engineering & Pharmaceutics School, Henan University of Science & Technology, Luoyang 471023, China

Received 5 September 2015; Revised 23 October 2015; Accepted 2 November 2015

Academic Editor: Davide Vione

Copyright © 2015 Jun 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.


The photooxidation process of aniline-containing simulated wastewater under visible light irradiation over BiOBr microcrystal grains with different shapes was studied. The distinctive surface microstructures of the BiOBr microcrystals, like clustered flower petals and quadrate lamellas, were produced by using imidazole ionic liquid and inorganic bromide as Br sources and by solvothermal and hydrothermal route, respectively. The ionic liquid not only can impact the products’ morphology, but also can largely improve the photocatalytic activity of the BiOBr microcrystals due to the soft templating effect. The top degradation ratio of the aniline wastewater photocatalyzed by lamellar BiOBr crystals is 23.71%, but the equivalent value photocatalyzed by flower petal-like BiOBr crystals is almost twice as much; that is, it reaches 46.51%. The photodegradation effect and mechanism over differently shaped BiOBr microcrystals have been compared.