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From Hollow Olive-Shaped BiVO4 to n−p Core−Shell BiVO4@Bi2O3 Microspheres: Controlled Synthesis and Enhanced Visible-Light-Responsive Photocatalytic Properties
Abstract
In this study, hollow olive-shaped BiVO(4) and n-p core-shell BiVO(4)@Bi(2)O(3) microspheres were synthesized by a novel sodium bis(2-ethylhexyl)sulfosuccinate (AOT)-assisted mixed solvothermal route and a thermal solution of NaOH etching process under hydrothermal conditions for the first time, respectively. The as-obtained products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy, Brunauer-Emmett-Teller surface area, and UV-vis diffuse-reflectance spectroscopy in detail. The influence of AOT and solvent ratios on the final products was studied. On the basis of SEM observations and XRD analyses of the samples synthesized at different reaction stages, the formation mechanism of hollow olive-shaped BiVO(4) microspheres was proposed. The photocatalytic activities of hollow olive-shaped BiVO(4) and core-shell BiVO(4)@Bi(2)O(3) microspheres were evaluated on the degradation of rhodamine B under visible-light irradiation (λ > 400 nm). The results indicated that core-shell BiVO(4)@Bi(2)O(3) exhibited much higher photocatalytic activities than pure olive-shaped BiVO(4). The mechanism of enhanced photocatalytic activity of core-shell BiVO(4)@Bi(2)O(3) microspheres was discussed on the basis of the calculated energy band positions as well. The present study provides a new strategy to enhancing the photocatalytic activity of visible-light-responsive Bi-based photocatalysts by p-n heterojunction.
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Cites
Biologically erodable microspheres as potential oral drug delivery systems
Mathiowitz, E., Jacob, J. S., Jong, Y. S., Carino, G. P., Chickering, D. E., Chaturvedi, P., Santos, C. A., Vijayaraghavan, K., Montgomery, S., Bassett, M., et al. (1997) · Nature · doi:10.1038/386410a0 · Cited by 823
Cited by
Recent advances and perspectives for solar-driven water splitting using particulate photocatalysts
Tao, X., Zhao, Y., Wang, S., Li, C., & Li, R. (2022) · Chemical Society Reviews · doi:10.1039/d1cs01182k · Cited by 871
BiOCl/BiVO4 p–n Heterojunction with Enhanced Photocatalytic Activity under Visible-Light Irradiation
He, Z., Shi, Y., Gao, C., Wen, L., Chen, J., & Song, S. (2014) · The Journal of Physical Chemistry C · doi:10.1021/jp409598s · Cited by 434
Rational design of yolk–shell nanostructures for photocatalysis
Li, A., Zhu, W., Li, C., Wang, T., & Gong, J. (2019) · Chemical Society Reviews · doi:10.1039/c8cs00711j · Cited by 346
Metadata
- Authors
- Guan, M.-L., Ma, D.-K., Hu, S.-W., Chen, Y.-J., & Huang, S.-M.
- Venue
- Inorganic Chemistry
- Publisher
- American Chemical Society (ACS)
- Published
- 2010-12-20
- Volume
- 50
- Issue
- 3
- Pages
- 800-805
- ISSN
- 0020-1669 (ISSN-L)
- 1520-510X
- OpenAlex
- W2313500558
- Cited by
- 275
- References
- 1
- FWCI
- 6.82
- Type
- journal article
- Language
- en
- Open access
- closed
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- Guan, M.-L., Ma, D.-K., Hu, S.-W., Chen, Y.-J., & Huang, S.-M. (2011). From Hollow Olive-Shaped BiVO4 to n−p Core−Shell BiVO4@Bi2O3 Microspheres: Controlled Synthesis and Enhanced Visible-Light-Responsive Photocatalytic Properties. Inorganic Chemistry. https://doi.org/10.1021/ic101961z
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