期刊
MATERIALS CHEMISTRY FRONTIERS
卷 5, 期 17, 页码 6522-6529出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1qm00770j
关键词
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资金
- National Natural Science Foundation of China [22075152, 21776140, 22073052]
- Science and Technology Projects Fund of Nantong City [JC2020134, JC2020133]
- Nantong University Analytical Testing Center
CeVO4 hierarchical hollow microspheres with various morphologies were synthesized via a glycerol-assisted solvothermal route. The adjustable structural variations and enhanced photocatalytic performance of the CeVO4 materials suggest new possibilities for the development of efficient hollow micro/nanostructures in the future.
CeVO4 hierarchical hollow microspheres with various morphologies have been synthesized via a simple glycerol (Gl)-assisted solvothermal route. They are constructed using different morphological nanoscaled units (nanoflakes, nanorods and nanowires) by adjusting the solvent ratio of the system. The Gl and l-aspartic acid (l-Asp) molecules act as structure-directing agents, meaning the CeVO4 hierarchical materials feature adjustable structural variations with 0D, 1D, and 2D structures. A possible formation mechanism is proposed based on the Gl content-dependent and time-dependent morphological evolution results. Under visible-light irradiation, the degradation results towards methylene blue (MB) indicate that the photocatalytic performance of the CeVO4/BiVO4 composites could be easily tuned by simply varying the Gl content ratio and the amount of BiVO4 NPs. Compared with pristine CeVO4, the photodegradation efficiency of the hierarchical nanowires-assembled CeVO4/BiVO4 hollow microspheres exhibit a two-fold increase after doping with 10% BiVO4 and the degradation rate reached 97.8% in 30 min. Owing to the easy fabrication, our strategy may provide broad possibilities for the future development of other hollow micro/nanostructures that exhibit an efficient performance.
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