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Preparation and optical properties of three-dimensional navel-like Bi2WO6 hierarchical microspheres |
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| Authors: | Qiang Chen Yuqin Mao Naici Bing Yongjin Zou Luping Zhu |
| Institution: | School of Environmental and Materials Engineering, Research Center of Resource Recycling Science and Engineering, Shanghai Polytechnic University (SSPU), Shanghai 201209, China; Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology (GUET), Guilin 541004, China; Shanghai Innovation Institute for Materials, Shanghai 200444, China |
| Abstract: | Three-dimensional (3D) navel-like Bi2WO6 (BWO) hierarchical microspheres (HMSs) were successfully prepared using a simple hydrothermal method. The as-obtained BWO samples were characterized by a variety of techniques. XRD result indicated that the as-synthesized samples were well-crystallized orthorhombic phase Bi2WO6 structure. SEM observations revealed that the hierarchical microspheres with an average diameter of 2 μm were built from several dozen of nanosheets. UV-vis diffuse reflectance spectrum study revealed that the obtained BWO sample had band gap energy of about 3.3 eV. Photoluminescence (PL) result showed that the sample had weak emission intensity. The BET specific surface area of the BWO sample was about 35.40 m2/g. The photocatalytic efficiency of the as-obtained BWO was evaluated by the degradation of norfloxacin (NOR) antibiotic. The result showed an about 67% NOR degradation in 8 h. |
| Keywords: | Semiconductors Crystal growth Microstructure Optical properties |
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