Zhang Yinshan, Wang Yingcai, Dong Zhimin, Wang Youqun, Liu Yuhui, Cao Xiaohong, Zhang Zhibin, Xu Chao, Wang Ning, Liu Yunhai
State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang, Jiangxi, PR China.
School of Nuclear Science and Engineering, East China University of Technology, Nanchang, Jiangxi, PR China.
Nat Commun. 2024 Oct 23;15(1):9124. doi: 10.1038/s41467-024-53366-3.
Efficient extraction of uranium from seawater is expected to provide virtually infinite fuel sources to power nuclear reactors and thus enable sustainable development of nuclear energy. The extraction efficiency for uranium greatly depends on the availability of active adsorption sites on the adsorbents. Maximization of the utilization rate of the binding sites in the adsorbent is vital for improving adsorption capacity. Herein, micro-redox reactors functioned by Cu(I)/Cu(II) conversion are constructed internally in an adsorbent bearing both amidoxime and carboxyl groups to induce active regeneration of the inactivated binding sites to enhance uranium capture. This adsorbent has high adsorption capacity (962.40 mg-U/g-Ads), superior anti-fouling ability as well as excellent uranium uptake (14.62 mg-U/g-Ads) in natural seawater after 56 days, placing it at the top of high-performance sorbent materials for uranium harvest from seawater.
从海水中高效提取铀有望提供几乎无限的燃料来源，为核反应堆提供动力，从而实现核能的可持续发展。铀的提取效率很大程度上取决于吸附剂上活性吸附位点的可用性。最大化吸附剂中结合位点的利用率对于提高吸附容量至关重要。在此，通过Cu(I)/Cu(II)转化起作用的微氧化还原反应器在同时含有偕胺肟和羧基的吸附剂内部构建，以诱导失活结合位点的活性再生，从而增强铀捕获能力。这种吸附剂具有高吸附容量（962.40 mg-U/g-Ads），优异的抗污能力以及在天然海水中56天后出色的铀摄取量（14.62 mg-U/g-Ads），使其处于从海水中收获铀的高性能吸附剂材料之首。
Zotero 插件