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Removal of rhodamine B from aqueous solution by BiPO4 hierarchical architecture |
Lei LI1,2,3, Jian XU1,2(), Changsheng GUO1,2, Yuan ZHANG1,2 |
1. State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; 2. Laboratory of Riverine Ecological Conservation and Technology, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; 3. Jinan Environmental Protection Planning & Design Research Institute, Jinan 250001, China |
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Abstract Hexahedron-like BiPO4 microcrystals were sucessfully synthesized via a template-free hydrothermal method. The resulting samples were characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM) and UV–vis spectroscopy. The BiPO4 samples were of pure monoclinic phase, and the initial amount of PO43- during synthesis did not show obvious effect on the phase properties of the materials. The hexahedron-like BiPO4 microcrystal had explicitly cut edges, and its thickness was about 1 μm. The photocatalytic performance of the BiPO4 catalysts was evaluated by photodegradation of RhB under UV light irradiation with commerial Degussa P25 TiO2 as reference. Compared with P25, the BiPO4 catalysts displayed higher photocatalytic activity, with 98.7% of RhB degraded during 60-min experiment. Cost evaluation analysis was adopted to describe the energy consumption of the degradation process, and the results suggested the potential application of this material in the field of dye-contaminated wastewater treatment or environmental matrices remediation.
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Keywords
BiPO4
photocatalysis
Rhodamine B
cost evaluation
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Corresponding Author(s):
XU Jian,Email:xujian@craes.org.cn
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Issue Date: 01 June 2013
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