期刊
APPLIED SURFACE SCIENCE
卷 349, 期 -, 页码 129-137出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2015.04.222
关键词
Montmorillonite; Carbon; Uranium; Sorption
类别
资金
- NSFC [41273134, 21477133, 91126020, 20971126]
- Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)
- Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection
The montmorillonite@carbon (MMT@C) composite was synthesized by the one-step hydrothermal carbonization process. U(VI) sorption on MMT@C from aqueous solution was investigated by using batch experiments. The maximum capacity of MMT@C toward U(VI) was 20.76 mg g(-1) at pH 3.95, which was much higher than that of the raw MMT. The decoration of the functional carbonaceous species on the MMT@C improved its sorption capacity. U(VI) sorption on the MMT@C was an endothermic process. The inner-sphere surface complexation might be the primary sorption mechanism. MMT@C was a promising material for pre-concentration and immobilization of U(VI) from large volumes of aqueous solution. (C) 2015 Elsevier B.V. All rights reserved.
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