复合数
吸附
铀
化学
化学工程
磷酸化
材料科学
核化学
复合材料
冶金
有机化学
生物化学
工程类
作者
Ruijuan Wang,Cuicui Li,Wei Wang,Hao Liang,Nana Wang,Hongping Zhang,Fupeng Jin,Ruibin Guo,Zunli Mo,Nijuan Liu
标识
DOI:10.1016/j.jece.2024.112518
摘要
In order to ensure the sustainable development of nuclear energy in the future and reduce the damage of nuclear-contaminated water to the ecological environment and organisms, it is of great significance to extract and remove uranium from the environment. In this work, phosphorylated functionalized MXene (TBP-M-OH(e)) was synthesized using a sacrificial template method. Due to the removal of the template, it exhibited a higher surface phosphoryl grafting rate, a looser structure, and a faster adsorption rate compared with TBP-M-OH. The uranium adsorption capacity measured at 298 K, pH=6, C0=100 mg·g-1, m: V=0.5 g·L-1 was 885.00 mg·g-1 along with high selectivity, exceeding most of the reported adsorbents. Even after five cycles of experiments, the uranium adsorption capacity remains satisfactory. The adsorption mechanism of TBP-M-OH(e) was described by FTIR and XPS. The high adsorption performance was attributed to the strong affinity of the phosphonyl group for uranium, as well as the synergistic effect of the amine group in APTES and the functional group of MXene itself for uranium. In conclusion, TBP-M-OH(e) showd an excellent potential for the treatment of nuclear contaminated water.
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