Abstract
A novel three-dimensional (3D) hierarchical rose-like Bi2WO6 (BWR) superstructure for use as an efficient visible-driven photocatalyst has been fabricated using a facile template-free hydrothermal strategy to integrate sequentially two-dimensional (2D) nanoplates into the 3D hierarchical structure. The formation mechanism was briefly analyzed. The 3D hierarchical superstructure facilitated migration and separation of photogenerated charge carriers due to the stacked hierarchical subunits, increased surface area for pollution adsorption, and more exposed active sites for surface redox catalysis. Benefiting from its excellent structural features, the BWR exhibited enhanced performance for photodegradation of RhB and photooxidation of NO under visible-light irradiation compared with irregular Bi2WO6. In addition, a trapping experiment was conducted to reveal which active species are involved in the photodegradation of RhB.
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Acknowledgements
This work was financially supported by the Key Project of Chinese National Programs for Research and Development (2016YFC0203800), the National Natural Science Foundation of China (51578288), Industry–Academia Cooperation Innovation Fund Projects of Jiangsu Province (BY2016004-09), Jiangsu Province Scientific and Technological Achievements into a Special Fund Project (BA2015062, BA2016055 and BA2017095), and Top-notch Academic Programs Project of Jiangsu Higher Education Institutions, Postgraduate Research & Practice Innovation Program of Jiangsu Province (KYCX18_0446).
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Wang, Y., Zeng, Y., Zhang, S. et al. Synthesis of 3D Hierarchical Rose-Like Bi2WO6 Superstructure with Enhanced Visible-Light-Induced Photocatalytic Performance. JOM 71, 2112–2119 (2019). https://doi.org/10.1007/s11837-019-03438-3
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DOI: https://doi.org/10.1007/s11837-019-03438-3