Phosphate-Functionalized Polyethylene with High Adsorption of Uranium(VI)
Phosphate-Functionalized Polyethylene with High Adsorption of Uranium(VI)
复制标题
高吸附铀(VI)的磷酸盐官能化聚乙烯
DOI：
10.1021/acsomega.7b00375
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发表时间：
2017-07-01
期刊：
影响因子：
4.1
通讯作者：
Marwani, Hadi M.
中科院分区：
文献类型：
--
作者：
Shao, Dadong;Li, Yuying;Marwani, Hadi M.
从海水中提取铀，需要开发新型稳定、可重复使用、对铀（VI）具有高亲和力和良好选择性的吸附剂。本文采用ar喷射等离子体处理PE，在浓H3PO4中合成了一种新型磷酸盐功能化聚乙烯（PO4/PE），并将其用于海水中U（VI）的提取。制备的PO4/PE对海水中痕量U（VI）的萃取性能优越。吸附过程符合二级动力学模型和Langmuir模型。PO4/PE在pH 8.2和298 K条件下对U（VI）的最大吸附量为173.8 mg/g。0.1 mol/L Na2CO3可有效再生PO4/PE， 8次循环后仍能很好地重复利用。实验结果为从海水中吸收U（VI）提供了新的途径。
For uranium extraction from seawater, development of new stable and reusable sorbents with high affinity and good selectivity for U(VI) is required. Herein, a new phosphate-functionalized polyethylene (denoted PO4/PE) was synthesized via a simple Ar-jet plasma treatment of PE in concentrated H3PO4 and was employed in U(VI) extraction from seawater. The prepared PO4/PE shows superior performance in the extraction of trace U(VI) from seawater. The adsorption process followed the second-order kinetics model and the Langmuir model. The maximum adsorption capacity of PO4/PE for U(VI) reaches 173.8 mg/g at pH 8.2 and 298 K. PO4/PE can be effectively regenerated by 0.1 mol/L Na2CO3 and reused well even after eight cycles. Experimental results offer a new approach for U(VI) uptake from seawater.