BiVO4/BiO0.67F1.66 heterojunction enhanced charge carrier separation to boost photocatalytic activity
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BiVO4/BiO0.67F1.66 heterojunction composites with cake-like morphology have been successfully synthesized by a two-step hydrothermal route for the first time. As-prepared BiVO4/BiO0.67F1.66 microstructures were characterized with X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), X-ray photoelectron spectroscopy (XPS), ultraviolet-visible (UV-vis) diffuse absorption spectroscope, and Brunauer-Emmett-Teller (BET) surface area measurements. The photocatalytic performance of the BiVO4/BiO0.67F1.66 composites was evaluated by studying the visible-light decomposition of rhodamine B (RhB) and phenol molecules in water solution. The BiVO4/BiO0.67F1.66 composites exhibit an obviously improved photocatalytic activity in comparison with the pure BiVO4, as a result of the increased surface area and the unique p–n heterojunction between BiO0.67F1.66 and BiVO4.
KeywordsBismuth vanadate Hydrothermal synthesis Heterostructure Photocatalysis Nanostructured catalysts
This work was financially supported by the National Natural Science Foundation of China (No. 21776317).
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Conflict of interest
The authors declare that they have no conflict of interest.
- Chen F, Yang Q, Wang Y, Zhao J, Wang D, Li X, Zeng G (2017) Novel ternary heterojunction photocatalyst of Ag nanoparticles and g-C3N4 nanosheets co-modified BiVO4 for wider spectrum visible-light photocatalytic degradation of refractory pollutant. Appl Catal B Environ 205:133–147CrossRefGoogle Scholar
- Zhu M, Liu Q, Chen W, Yin Y, Ge L, Li H, Wang K (2017) Boosting the visible-light photoactivity of BiOCl/BiVO4/N-GQD ternary heterojunctions based on internal Z-scheme charge transfer of N-GQDs: simultaneous band gap narrowing and carrier lifetime prolonging. ACS Appl Mater Interfaces 9(44):38832–38841CrossRefGoogle Scholar