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一个与乙烯结合的共价有机框架,经过修改,具有胺基组,用于从强酸溶液中选择性提取

Fuqiang Zhao¹, Yaoyao Bai¹, Xiaoyuan Zhou²

¹State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X) Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou, 215123, China.

Chemistry (Weinheim an der Bergstrasse, Germany)

|October 7, 2023

概括

一种新的共价有机框架 (COF-316-DM) 有效地从酸性核废物中去除离子. 这种稳定的材料表现出高容量和选择性,即使在恶劣的辐射和酸性条件下.

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:

有效的离子去除对于核废物玻璃化安全至关重要.
现有的吸附剂在恶劣的酸性和放射性环境中缺乏稳定性和选择性.

研究的目的:

设计和合成一种强大的吸附剂,用于从酸性核废物中选择性捕获离子.
在模拟废物条件下评估新型吸附剂的稳定性,容量和可重复使用性.

主要方法:

合成一种与乙烯结合的共价有机框架 (COF-316-DM),其功能与二甲基thiocarbamoyl组.
在酸中评估吸附性能,包括动力学,容量,选择性和可重复使用性.
在高剂量的β/γ辐射下对稳定性的评估.

主要成果:

在200-400kGy辐射下,COF-316-DM具有很高的稳定性.
在4M酸中实现了147 mg/g的高吸附能力,具有快速的动力学和出色的可重复使用性.
在模拟的高水平液体废物场景中,对离子比其他17个离子具有显著的选择性.

结论:

设计的COF-316-DM为在具有挑战性的核废物环境中捕获离子提供了有希望的解决方案.
强大的聚乙烯连接和胺基功能组有助于材料的卓越性能.
这项工作强调了量身定制的共价有机框架在选择性金属离子修复方面的潜力.

关键词:

吸附吸附是一种吸附.共价有机框架是共价有机框架.帕拉是一种.稳定的稳定性稳定的稳定性胺胺的 thioamide 的使用

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