Visible-light-driven CeO2/black phosphorus heterostructure with enhanced photocatalytic performance
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CeO2/black phosphorus (BP) heterostructure nanocomposite was synthesized via a two-step assembly method. The structure and optical property of the prepared composites were characterized by X-ray diffraction, transmission electron microscopy, UV–Vis diffuse reflectance spectroscopy (UV–Vis), Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. Photocatalytic degradation of bisphenol A (BPA) in simulated waste water was performed by using CeO2/BP nanocomposite as catalyst. Results indicated that the degradation rate of BPA reached 82.3% within 180 min, which was remarkably improved compared with pure CeO2 and BP due to the formation of indirect Z-scheme heterostructure intermediated by oxygen vacancies originated from CeO2. The unique heterostructure facilitated the charge transfer and preserved the high redox potential leading to improve the photocatalytic degradation performance.
This work was supported by the National Science Foundation of China (Grant Nos. 51674043, 51702026), Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology (Grant No. BM2012110) and Postgraduate Research & Practice Innovation Program of Jiangsu Province (SJCX18_0951).
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