Enhanced Photocatalytic Removal of Uranium(VI) from Aqueous Solution by Magnetic TiO2/Fe3O4 and Its Graphene Composite
| العنوان: | Enhanced Photocatalytic Removal of Uranium(VI) from Aqueous Solution by Magnetic TiO2/Fe3O4 and Its Graphene Composite |
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| المؤلفون: | Zhifang Chai, Wei-Qun Shi, Lirong Zheng, Lin Wang, Zijie Li, Wen-Lu Guo, Zhiwei Huang |
| المصدر: | Environmental Science & Technology. 51:5666-5674 |
| بيانات النشر: | American Chemical Society (ACS), 2017. |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | Aqueous solution, Materials science, Graphene, Inorganic chemistry, chemistry.chemical_element, 02 engineering and technology, General Chemistry, Uranium, 010402 general chemistry, 021001 nanoscience & nanotechnology, medicine.disease_cause, 01 natural sciences, 0104 chemical sciences, law.invention, chemistry, Wastewater, law, Ionic strength, Photocatalysis, medicine, Environmental Chemistry, Irradiation, 0210 nano-technology, Ultraviolet, Nuclear chemistry |
| الوصف: | 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 TiO2/Fe3O4 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 TiO2/Fe3O4 for the reduction of U(VI) was 19.3 times higher than that of pure TiO2, which is strongly correlated with the Fe0 and additional Fe(II) generated from the reduction of Fe3O4 by TiO2 photoelectrons. The effects of initial uranium concentration, solution pH, ionic strength, the composition of wastewater, and organic pollutants on the U(VI) removal by TiO2/Fe3O4 were systematically investigated. The results demonstrated its excellent performance in the cleanup of uranium contamination. As graphene can efficiently attract the TiO2 photoelectrons and thus decrease their transfer to Fe3O4, the photodi... |
| تدمد: | 1520-5851 0013-936X |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::ab8e98a8754bb32449ad3651d7a64d0c https://doi.org/10.1021/acs.est.6b05313 |
| رقم الأكسشن: | edsair.doi...........ab8e98a8754bb32449ad3651d7a64d0c |
| قاعدة البيانات: | OpenAIRE |
Find this issue from the American Chemical Society | تدمد: | 15205851 0013936X |
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