Uranium adsorption on amide functionalized graphene oxide nanoribbons
10.3760/cma.j.issn.0254-5098.2020.04.011
- VernacularTitle:酰胺功能化石墨烯纳米带对铀的吸附性能研究
- Author:
Zhenyu WU
1
;
Zhongwen WANG
;
Yun WANG
Author Information
1. 中国原子能科学研究院，北京 102413(现在江西省职业病防治研究院，南昌 330006)
- From:
Chinese Journal of Radiological Medicine and Protection
2020;40(4):308-314
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To synthesize amide functionalized graphene oxide nanoribbons (GONRs-AM) and investigate their adsorption performance for uranium.Methods:Characterization of the synthesized GONRs-AM was made by using scanning electron microscopy (SEM) and Fourier infrared spectroscopy (FT-IR). The effects of solution pH, adsorbent dosage, adsorption time, initial uranium concentration, temperature and ionic strength on the uranium adsorption on GONRs-AM were investigated by using batch adsorption experiments.Results:The maximum adsorption capacity of GONRs-AM for uranium was 294.5 mg/g, and the adsorption process was a spontaneous exothermic process influenced by pH, which was consistent with the quasi-second-order kinetic model and the Langmuir model.Conclusions:As an adsorbent, GONRs-AM can effectively adsorb uranium from aqueous solution and can be used to separate uranium from radioactive wastewater.
