The preparation of PZS-OH/CNT composite and its adsorption of U(VI) in aqueous solutions

被引：0
|
作者：
Yan Liu
Ying Dai
Dingzhong Yuan
Yun Wang
Lixia Zou
机构：
[1] East China University of Technology,Key Laboratory for Radioactive Geology and Exploration Technology, Fundamental Science for National Defense
[2] East China University of Technology,School of Chemistry, Biology and Material Science
来源：
Journal of Radioanalytical and Nuclear Chemistry | 2017年 / 314卷
关键词：
Polyphosphazene; Carbon nanotubes; Uranium; Adsorption;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In this paper, polycyclotriphosphazene coated carbon nanotubes (PZS-OH/CNT) composite material has been synthesized via a facial method. The prepared PZS-OH/CNT was characterized by FTIR, BET, zeta potential and SEM. The material was investigated as an adsorbent for the adsorption towards U(VI) from aqueous solutions. Several parameters like solution pH, contact time and temperature were used to evaluate the sorption efficiency. The results indicated that the adsorption capacity of uranium on PZS-OH/CNT was improved from 41.48 mg g−1 for CNT to 338.98 mg g−1 due to the presence of functional groups on PZS-OH/CNT. The U(VI) sorption on PZS-OH/CNT was well fitted to the Langmuir adsorption isotherm and pseudo-second kinetics models. The thermodynamic parameters (ΔH, ΔS and ΔG) showed the U(VI) adsorption on CNT and PZS-OH/CNT was endothermic and spontaneous in nature.
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页码：1747 / 1757
页数：10
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