Study on separation of ReO4 −, a substitute for TcO4 −, using functional ionic liquid impregnated extraction chromatography resins

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-09-12 DOI:10.1515/ract-2024-0290

Meiying Liu, Xupeng Zhi, Peng Liu, Xiaomin Li, Xinlong Chen, Bin Liu, Yinglin Shen

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引用次数: 0

Abstract

99Tc has a long half-life, high fission yield, and good environmental mobility, posing a significant threat to the environment and human health. Therefore, removing technetium from radioactive wastewater is a very important and urgent task. For laboratory safety reasons, ReO4 − is often used as a non-isotopic substitute for 99TcO4 −. From this point of view, the study of the separation behavior of Re in the aqueous phase can provide a reference value for the removal of 99Tc. Here, a new type of extraction chromatography resin was prepared by impregnating the functionalized ionic liquid into the macroporous resin, whose imidazolium cations modified by amide functional groups which can effectively capture ReO4 −/TcO4 − from simulated radioactive wastewater. The results show the resin has good adsorption performance and fast adsorption kinetics (the adsorption equilibrium is about 20 min). The adsorption mechanism was investigated using Fourier transform infrared (FT-IR) spectra and X-ray photoelectron spectroscopy (XPS). It shows that the adsorption process is an anion exchange between Cl− in the resin and ReO4 − in the solution.

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利用功能离子液体浸渍萃取色谱树脂分离锝氧化还原剂 ReO4 - 的研究

99Tc 半衰期长、裂变产率高、环境迁移性好，对环境和人类健康构成重大威胁。因此，从放射性废水中去除锝是一项非常重要和紧迫的任务。出于实验室安全考虑，ReO4 - 通常被用作 99TcO4 - 的非同位素替代物。从这个角度来看，研究水相中 Re 的分离行为可以为 99Tc 的去除提供参考值。本文通过在大孔树脂中浸渍功能化离子液体，制备了一种新型萃取色谱树脂，其咪唑阳离子被酰胺官能团修饰，可有效捕集模拟放射性废水中的 ReO4 -/TcO4 -。结果表明，该树脂具有良好的吸附性能和快速的吸附动力学（吸附平衡时间约为 20 分钟）。利用傅立叶变换红外光谱（FT-IR）和 X 射线光电子能谱（XPS）研究了吸附机理。结果表明，吸附过程是树脂中的 Cl- 与溶液中的 ReO4 - 之间的阴离子交换过程。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.