Adsorption of uranium using graphene oxide nanoribbons/manganese oxide composites

被引：0
|
作者：
Hu X.-W. [3 ]
Wang Y. [1 ,2 ,3 ]
Wu P. [3 ]
Yuan D.-Z. [2 ]
Liu Y. [2 ]
Liu Z.-R. [2 ]
机构：
[1] Engineering Research Center of Nuclear Technology Application, East China Institute of Technology, Ministry of Education, Nanchang
[2] State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang
[3] School of Nuclear Science and Engineering, East China University of Technology, Nanchang
来源：
Gao Xiao Hua Xue Gong Cheng Xue Bao/Journal of Chemical Engineering of Chinese Universities | 2019年 / 33卷 / 06期
关键词：
Adsorption; Graphene nanoribbons; Manganese; U(VI);
D O I：
10.3969/j.issn.1003-9015.2019.06.031
中图分类号：
学科分类号：
摘要：
Graphene oxide nanoribbons/manganese dioxide composites (GONRs/MnO2) were successfully prepared by grafting MnO2 onto graphene oxide nanoribbons (GONRs) unzipped from multi-walled carbon nanotubes. The composites were characterized by SEM,XRD,FT-IR and BET, and the adsorption properties of the composites for the removal of U(VI) were further studied. The results show that the adsorption process is a rapid pH-dependent spontaneous and endothermic process. It followed to the quasi-secondary kinetic model and the Langmuir model, and the maximum adsorption capacity was 345 mg∙g-1. The composites can be regenerated using HCl solution and repeatedly used for five times with little loss of sorption capabilities. They are expected to be used for the separation and recovery of uranium from wastewater. © 2019, Editorial Board of "Journal of Chemical Engineering of Chinese Universities". All right reserved.
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页码：1532 / 1540
页数：8
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