| Wu Zhenyu,Wang Zhongwen,Wang Yun.Uranium adsorption on amide functionalized graphene oxide nanoribbons[J].Chinese Journal of Radiological Medicine and Protection,2020,40(4):308-314 |
| Uranium adsorption on amide functionalized graphene oxide nanoribbons |
| Received:January 09, 2020 |
| DOI：10.3760/cma.j.issn.0254-5098.2020.04.011 |
| KeyWords:Graphene oxide nanoribbons Amide group Uranium Adsorption |
| FundProject:江西省卫健委科技计划项目（20203878） |
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| 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. |
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