Application of Fe3O4/graphene oxide composite for the separation of Cs(I) and Sr(II) from aqueous solution

作者：Wang Xu; Yu Jitao^*

来源：Journal of Radioanalytical and Nuclear Chemistry, 2015, 303(1): 807-813.

DOI：10.1007/s10967-014-3431-4

• Sr(II)
• Cs(I)
• Graphene oxide
• Magnetite adsorbent
• Adsorption

The composite of Fe3O4 and graphene oxide (denoted as Fe3O4/GO) with excellent adsorption capacity of Cs(I) and Sr(II) was prepared by chemical coprecipitation method. The characterization results Fe3O4/GO confirmed the successful preparation of Fe3O4/GO. Fe3O4/GO was applied as adsorbent for the separation of Cs(I) and Sr(II) from aqueous solution. At pH 5.0 and 293 K, the maximum adsorption capacities of Cs(I) and Sr(II) on Fe3O4/GO can achieve to 15.8 and 38.4 mg/g, respectively. Adsorptions of Cs(I) and Sr(II) on Fe3O4/GO surface were an endothermic and spontaneous process, and were enhanced at high pH and low ionic strength. Fe3O4/GO can be separated from aqueous solution by a simple magnetic process. The results of this work highlight the application of Fe3O4/GO as an adsorbent for the separation of Cs(I) and Sr(II) from radionuclide waste water.

• 出版日期2015-1
• 单位河南理工大学; 中国地质大学（北京）