Graphene oxides for simultaneous highly efficient removal of trace level radionuclides from aqueous solutions

被引：0

作者：

Xiangxue Wang ^{[1
,2
]}

Zhongshan Chen ^{[1
]}

Xiangke Wang ^{[1
,2
,3
]}

机构：

[1] School of Chemistry and Environment, North China Electric Power University

[2] Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions

[3] Faculty of Engineering, King Abdulaziz University

来源：

Science China(Chemistry) | 2015年 / 11期

关键词：

D O I：

暂无

中图分类号：

X771 [原子能工业]; O613.71 [碳C];

学科分类号：

083002 ; 070301 ; 081704 ;

摘要：

Graphene oxides(GOs) were synthesized via modified Hummers method, and were applied as adsorbents to remove radionuclides from large volumes of aqueous solutions. The single and competitive sorption of four radionuclides(i.e., U(VI), 152+154Eu(III), 85+89Sr(II) and 134Cs(I)) on the GOs from aqueous solutions were investigated as a function of p H, ionic strength and radionuclide initial concentrations using batch technique. The results showed that the GOs had much higher sorption capacity than many other contemporary materials, for the preconcentration of radionuclides from large volumes of aqueous solutions. The sorption of radionuclides on GOs obeyed the Langmuir model, and was mainly attributed to surface complexation via the coordination of radionuclides with the oxygen-containing functional groups on GO surfaces. The competitive sorption results indicated that the selectivity sorption capacities were U(VI)>Eu(III)>Sr(II)>Cs(I). The GOs are suitable materials for the efficient removal and preconcentration of radionuclides from aqueous solutions in nuclear waste management and environmental pollution cleanup.

引用

页码：1766 / 1773

页数：8

共 16 条

[1]

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[2]

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[3]

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[4]

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[5]

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[6]

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[8]

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[9]

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