The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
Enhanced Photocatalytic Removal of Uranium(VI) from Aqueous Solution by Magnetic TiO2/Fe3O4 and Its Graphene Composite
Abstract
The separation and recovery of uranium from radioactive wastewater is important from the standpoints of environmental protection and uranium reuse. In the present work, magnetically collectable TiO 2 /Fe 3 O 4 and its graphene composites were fabricated and utilized for the photocatalytical removal of U(VI) from aqueous solutions. It was found that, under ultraviolet (UV) irradiation, the photoreactivity of TiO 2 /Fe 3 O 4 for the reduction of U(VI) was 19.3 times higher than that of pure TiO 2, which is strongly correlated with the Fe 0 and additional Fe(II) generated from the reduction of Fe 3 O 4 by TiO 2 photoelectrons. The effects of initial uranium concentration, solution pH, ionic strength, the composition of wastewater, and organic pollutants on the U(VI) removal by TiO 2 /Fe 3 O 4 were systematically investigated. The results demonstrated its excellent performance in the cleanup of uranium contamination. As graphene can efficiently attract the TiO 2 photoelectrons and thus decrease their transfer to Fe 3 O 4, the photodissolution of Fe 3 O 4 in the TiO 2 /graphene/Fe 3 O 4 composite can be largely alleviated compared to that of the TiO 2 /Fe 3 O 4, rendering this ternary composite a much higher stability. In addition, scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray absorption near edge spectroscopy (XANES), and X-ray photoelectron spectroscopy (XPS) were used to explore the reaction mechanisms.
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Cites
Lightcap, I. V., Kosel, T. H., & Kamat, P. V. (2010) · Nano Letters · doi:10.1021/nl9035109 · Cited by 1,044
Cited by
Jiang, X.-H., Xing, Q.-J., Luo, X.-B., Li, F., Zou, J.-P., Liu, S.-S., Li, X., & Wang, X.-K. (2018) · Applied Catalysis B: Environmental · doi:10.1016/j.apcatb.2018.01.062 · Cited by 361
Photoconversion of U(VI) by TiO2: An efficient strategy for seawater uranium extraction
Li, P., Wang, J., Wang, Y., Liang, J., He, B., Pan, D., Fan, Q., & Wang, X. (2019) · Chemical Engineering Journal · doi:10.1016/j.cej.2019.02.013 · Cited by 299
Ghamari Kargar, P., Maleki, B., & Ghani, M. (2025) · Biomass Conversion and Biorefinery · doi:10.1007/s13399-023-05217-2 · Cited by 46
Metadata
- Authors
- Li, Z.-J., Huang, Z.-W., Guo, W.-L., Wang, L., Zheng, L.-R., Chai, Z.-F., & Shi, W.-Q.
- Venue
- Environmental Science & Technology
- Publisher
- American Chemical Society (ACS)
- Published
- 2017-04-28
- Volume
- 51
- Issue
- 10
- Pages
- 5666-5674
- ISSN
- 0013-936X (ISSN-L)
- 1520-5851
- OpenAlex
- W2606341966
- Cited by
- 387
- References
- 1
- FWCI
- 13.70
- Type
- journal article
- Language
- en
- Open access
- closed
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