Immobilization of carboxyl-modified multiwalled carbon nanotubes in chitosan-based composite membranes for U(VI) sorption
Immobilization of carboxyl-modified multiwalled carbon nanotubes in chitosan-based composite membranes for U(VI) sorption
复制标题
羧基改性多壁碳纳米管在壳聚糖基复合膜中的固定化用于 U(VI) 吸附
DOI:
10.1007/s10967-018-5993-z
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发表时间:
2018-06
影响因子:
1.6
通讯作者:
Liu Zhirong
中科院分区:
文献类型:
--
作者:
Ouyang Jinbo;Wang Yun;Li Tianqi;Zhou Limin;Liu Zhirong
The carboxyl-modified multiwalled carbon nanotubes were immobilized in chitosan-based composite membranes (CS-CNTs) which were used as efficient sorbents for U(VI) sorption. The incorporation of CNTs in the CS-CNTs membranes improves their mechanical strength as well as U(VI) sorption performance. XPS analysis indicates that both amine and carboxyl groups are responsible for the complexation of U(VI). The sorption kinetics followed the pseudo-second order equation, whereas the sorption isotherms fitted well with Langmuir model (qm = 126.7 mg g−1 at 298 K). Moreover, the U(VI)-loaded CS-CNT8 can be effectively desorbed by 0.2 M acidified EDTA and reused.
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DOI:
10.1016/j.compositesa.2009.04.001
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2009-07-01
影响因子:
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