Production of three-dimensional porous polydopamine-functionalized attapulgite/chitosan aerogel for uranium(VI) adsorption

被引：0
|
作者：
Yun Liao
Meng Wang
Dajun Chen
机构：
[1] Donghua University,State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering
[2] University of South China,School of Nuclear Science and Technology
来源：
Journal of Radioanalytical and Nuclear Chemistry | 2018年 / 316卷
关键词：
Attapulgite; Chitosan; Aerogel; Uranium(VI); Adsorption;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A novel three-dimensional porous polydopamine-functionalized attapulgite/chitosan (AT@PDA/CS) aerogel was designed and prepared for uranium(VI) adsorption, and its morphology and structure were characterized by TEM, SEM-EDS, XRD, FT-IR, Raman and XPS techniques. According to batch experiments, its adsorption equilibrium was reached within 40 min at pH 5.0. The adsorption isotherms was fitted well for Langmuir isotherm model and maximum adsorption capacity was 175.1 mg g−1 at 328 K. The thermodynamic analysis indicated that the adsorption was an endothermic and spontaneous process. Furthermore, the aerogel has superior absorption reusability and the removal efficiency was maintained at 78% after five adsorption–desorption cycles.
引用
收藏
页码：635 / 647
页数：12
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