Radiation synthesis of a new amidoximated UHMWPE fibrous adsorbent with high adsorption selectivity for uranium over vanadium in simulated seawater
文献类型：期刊论文
| 作者 | Gao, QH; Hu, JT; Li, R; Xing, Z; Xu, L; Wang, MH; Guo, XJ; Wu, GZ |
| 刊名 | RADIATION PHYSICS AND CHEMISTRY
 |
| 出版日期 | 2016 |
| 卷号 | 122期号:-页码:1—8 |
| 关键词 | EMULSION GRAFT-POLYMERIZATION MOLECULAR-WEIGHT POLYETHYLENE URANYL-ION ADSORPTION AMINE-TYPE ADSORBENTS GLYCIDYL METHACRYLATE RECOVERY FIBER ACRYLONITRILE EXTRACTION HYDROGELS |
| ISSN号 | 0969-806X |
| 通讯作者 | Wu, GZ (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, CAS Ctr Excellence TMSR Energy Syst, 2019 Jialuo Rd, Shanghai 201800, Peoples R China. ; Wu, GZ (reprint author), POB 800-204, Shanghai 201800, Peoples R China. |
| 英文摘要 | A new kind of highly efficient adsorbent material has been fabricated in this study for the purpose of extracting uranium from seawater. Ultra-high molecular weight polyethylene (UHMWPE) fiber was used as a trunk material for the adsorbent, which was prepared by a series of modification reactions, as follows: (1) grafting of glycidyl methacrylate (GMA) and methyl acrylate (MA) onto UHMWPE fibers via Co-60 gamma-ray pre-irradiation; (2) aminolyzation of UHMWPE fiber by the ring-opening reaction between of epoxy groups PGMA and ethylene diamine (EDA); (3) Michael addition of amino groups with acrylonitrile (AN) to yield nitrile groups; (4) amidoximation of the attached nitrile moieties by hydroxylamine in dimethyl sulfoxide-water mixture. Modified UHMWPE fibers were characterized by means of attenuated total reflectance-Fourier transformed infrared spectroscopy (ATR-FTIR), thermogravimetric analysis (TGA) and scanning electron microscopy (SEM) to confirm the attachment of amidoxime (AO) groups onto the UHMWPE fibers. The results of X-ray diffraction (XRD) and single fiber tensile strength verified that the modified UHMWPE fiber retained excellent mechanical properties at a low absorbed radiation dose. The adsorption performance of the UHMWPE fibrous adsorbent was evaluated by subjecting it to an adsorption test in simulated seawater using a continuous-flow mode. The amount of uranium adsorbed by this AO-based UHMWPE fibrous adsorbent was 1.97 mg-U/g after 42 days. This new adsorbent also showed high selectivity for the uranyl ion, and its selectivity for metal ions was found to decrease in the following order: U > Cu > Fe > Ca > Mg > Ni > Zn > Pb > V > Co. The adsorption selectivity for uranium is significantly higher than that for vanadium. In addition, preparation of this modified adsorbent consumes much smaller amounts of the toxic acrylonitrile monomer than the conventional preparation methods of AO-based polyethylene fibers. (C) 2016 Published by Elsevier Ltd. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000370900800001 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/25821]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 推荐引用方式 GB/T 7714 | Gao, QH,Hu, JT,Li, R,et al. Radiation synthesis of a new amidoximated UHMWPE fibrous adsorbent with high adsorption selectivity for uranium over vanadium in simulated seawater[J]. RADIATION PHYSICS AND CHEMISTRY,2016,122(-):1—8. |
| APA | Gao, QH.,Hu, JT.,Li, R.,Xing, Z.,Xu, L.,...&Wu, GZ.(2016).Radiation synthesis of a new amidoximated UHMWPE fibrous adsorbent with high adsorption selectivity for uranium over vanadium in simulated seawater.RADIATION PHYSICS AND CHEMISTRY,122(-),1—8. |
| MLA | Gao, QH,et al."Radiation synthesis of a new amidoximated UHMWPE fibrous adsorbent with high adsorption selectivity for uranium over vanadium in simulated seawater".RADIATION PHYSICS AND CHEMISTRY 122.-(2016):1—8. |
入库方式： OAI收割
来源：上海应用物理研究所
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