强大的共价有机框架的后修改,以有效地封存99TcO-ReO
Lei Zhu1, Hai-Ruo Li2, Zhao-Fei Liu2
1Department of Molecular Imaging and Nuclear Medicine, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Centre for Cancer, Tianjin's Clinical Research Centre for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, 300060, China.
一种新型吸收剂COF-polyILs有效地从核废物中去除甲酸 (TcO4-). 这种材料在恶劣的酸性和性条件下表现出高效率和稳定性,克服了当前技术的局限性.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 核工程 核工程是指核工程.
背景情况:
- 核废物再处理产生了高度酸性和性环境.
- 现有用于-99 (TcO4-) 封存的吸附剂在恶劣条件下缺乏稳定性和效率.
研究的目的:
- 开发一种强大的吸附剂,用于从核废物中去除TcO4.
- 在具有挑战性的酸性和性条件下提高吸附剂性能.
主要方法:
- 合成后对共价有机框架 (COFs) 的改造,通过通过乙烯基聚合来接种基于伊米达的离子液体 (ILs).
- 使用乙烯基聚合来制造COF-polyILs复合 Sorbent. 使用乙烯基聚合来制造COF-polyILs复合 Sorbent.
- 在各种条件下测试ReO4- (TcO4-的替代物) 吸附动力学和吸附能力.
主要成果:
- 这种COF-polyILs吸收剂表现出快速吸附动力学 (<5分钟).
- 达到388mg/g的高吸收能力,用于ReO4-.
- 在高度酸性条件和复杂的废物流中表现出优异的ReO4去除.
结论:
- 开发的COF-polyILs复合物为核废物中TcO4-封存提供了一个有前途的解决方案.
- 该材料在恶劣环境中的稳定性和效率解决了当前吸附剂的关键局限性.
- 接种策略为设计用于放射性废物整治的先进吸附剂提供了一条途径.
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