Preparation of carbon coated Fe3O4 nanoparticles for magnetic separation of uranium

被引：25
作者：
Zhang, Xiaofei [1 ,2 ]
Wang, Jun [2 ,3 ]
机构：
[1] Chengde Petr Coll, Dept Chem Engn, Chengde 067000, Peoples R China
[2] Harbin Engn Univ, Coll Mat Sci & Chem Engn, Harbin 150001, Heilongjiang, Peoples R China
[3] Harbin Engn Univ, Minist Educ, Key Lab Superlight Mat & Surface Technol, Harbin 150001, Heilongjiang, Peoples R China
来源：
SOLID STATE SCIENCES | 2018年 / 75卷
关键词：
Uranium; Carbon coated Fe3O4 nanoparticles; Adsorption; Desorption; CORE-SHELL MICROSPHERES; AQUEOUS-SOLUTION; SELECTIVE ENRICHMENT; OXIDE NANOPARTICLES; REMOVAL; ADSORPTION; SORPTION; PHOSPHOPEPTIDES; GROUNDWATER; REDUCTION;
D O I：
10.1016/j.solidstatesciences.2017.11.003
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Uranium(VI) was removed from aqueous solutions using carbon coated Fe3O4 nanoparticles (Fe3O4@C). Batch experiments were conducted to study the effects of initial pH, shaking time and temperature on uranium sorption efficiency. It was found that the maximum adsorption capacity of the Fe3O4@C toward uranium(VI) was similar to 120.20 mg g(-1) when the initial uranium(VI) concentration was 100 mg L-1, displaying a high efficiency for the removal of uranium(VI) ions. Kinetics of the uranium(VI) removal is found to follow pseudo-second-order rate equation. In addition, the uranium(VI)-loaded Fe3O4@C nanoparticles can be recovered easily from aqueous solution by magnetic separation and regenerated by acid treatment. Present study suggested that magnetic Fe3O4@C composite particles can be used as an effective and recyclable adsorbent for the removal of uranium(VI) from aqueous solutions. (C) 2017 Elsevier Masson SAS. All rights reserved.
引用
收藏
页码：14 / 20
页数：7
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