Enhanced photocatalytic removal of uranium(vi) from aqueous solution by magnetic tio2/fe3o4 and its graphene composite
文献类型：期刊论文
| 作者 | Li, Zi-Jie1,2; Huang, Zhi-Wei1,2; Guo, Wen-Lu1,2; Wang, Lin1,2; Zheng, Li-Rong3; Cha, Zhi-Fang4,5; Shi, Wei-Qun1,2 |
| 刊名 | Environmental science & technology
 |
| 出版日期 | 2017-05-16 |
| 卷号 | 51期号:10页码:5666-5674 |
| ISSN号 | 0013-936X |
| DOI | 10.1021/acs.est.6b05313 |
| 通讯作者 | Shi, wei-qun(shiwq@ihep.ac.cn) |
| 英文摘要 | 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 fe 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 photodissolution of fe3o4 in the tio2/graphene/fe3o4 composite can be largely alleviated compared to that of the tio2/fe3o4, 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. |
| WOS关键词 | VISIBLE-LIGHT IRRADIATION ; WASTE-WATER ; EFFICIENT REMOVAL ; TIO2 NANOCRYSTALS ; XPS SPECTRA ; REDUCTION ; CR(VI) ; OXIDE ; U(VI) ; IONS |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
| WOS类目 | Engineering, Environmental ; Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000401674400035 |
| 出版者 | AMER CHEMICAL SOC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2177428 |
| 专题 | 高能物理研究所 |
| 通讯作者 | Shi, Wei-Qun |
| 作者单位 | 1.Chinese Acad Sci, Inst High Energy Phys, Lab Nucl Energy Chem, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst High Energy Phys, Key Lab Biomed Effects Nanomat & Nanosafety, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China 4.Soochow Univ, Sch Radiol & Interdisciplinary Sci RAD X, Suzhou 215123, Peoples R China 5.Soochow Univ, Collaborat Innovat Ctr Radiat Med Jiangsu Higher, Suzhou 215123, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Zi-Jie,Huang, Zhi-Wei,Guo, Wen-Lu,et al. Enhanced photocatalytic removal of uranium(vi) from aqueous solution by magnetic tio2/fe3o4 and its graphene composite[J]. Environmental science & technology,2017,51(10):5666-5674. |
| APA | Li, Zi-Jie.,Huang, Zhi-Wei.,Guo, Wen-Lu.,Wang, Lin.,Zheng, Li-Rong.,...&Shi, Wei-Qun.(2017).Enhanced photocatalytic removal of uranium(vi) from aqueous solution by magnetic tio2/fe3o4 and its graphene composite.Environmental science & technology,51(10),5666-5674. |
| MLA | Li, Zi-Jie,et al."Enhanced photocatalytic removal of uranium(vi) from aqueous solution by magnetic tio2/fe3o4 and its graphene composite".Environmental science & technology 51.10(2017):5666-5674. |
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