Abstract
Abstract Technetium (99Tc), as a radionuclide produced by the fission of enriched uranium, poses a significant threat to human being due to its long half-life and radioactive toxicity. Therefore, developing highly-efficient functional materials that can rapidly and selectively capture 99Tc is of great significance. In this work, rhenium (Re) was employed as a surrogate of 99Tc, and a mesoporous hybrid anion exchanger with silica framework (SiPyR-N4) was studied for its removal from the simulated groundwater. As the results, SiPyR-N4 exhibited unique advantages over traditional commercial organic resins, including large bulk density in solution (0.56 g/ml), extremely fast adsorption kinetics ( O bonding. Even in the simulated groundwater rhenium was also eliminated completely after flowing through the chromatographic extraction column packed with SiPyR-N4. In general, the research not only exhibited an excellent material that can remove low-level rhenium (surrogate of radioactive technetium) from natural water effectively and efficiently, but also provide a new sight for the synthesis or improvement of ion exchange resin.
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