Ultralight sulfonated graphene aerogel for efficient adsorption of uranium from aqueous solutions

被引：0
|
作者：
Zhibin Zhang
Jian Huang
Zhimin Dong
Bingkun Luo
Yuhui Liu
Ying Dai
Xiaohong Cao
Youqun Wang
Rong Hua
Yunhai Liu
机构：
[1] East China University of Technology,State Key Laboratory of Nuclear Resources and Environment
[2] North China Electric Power University,MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering
来源：
Journal of Radioanalytical and Nuclear Chemistry | 2019年 / 321卷
关键词：
Graphene aerogel; Sulfonation; Uranium; Adsorption; Interaction mechanism;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
An ultralight sulfonated graphene aerogel (GA-SO3H) was synthesized via simply gas phase sulfonation and was adopted to adsorb U(VI) from radioactive wastewater. The characterization confirmed plentiful sulfonate groups on GA-SO3H surfaces. GA-SO3H exhibited high U(VI) sorption capacity with maximum amount of 148.4 mg g−1 and reached maximum separation selectivity of 61.38% at 298 K and pH 5.0 due to the surface complexation between the O atoms of sulfonate groups and uranyl ions. Furthermore, GA-SO3H exhibited satisfied regeneration and excellent structural stability. This paper highlighted ultralight GA-SO3H as an efficient adsorbent for effective adsorption/recovery of uranyl ions from radioactive wastewater.
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页码：1045 / 1055
页数：10
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