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CHEMICAL PHYSICS LETTERS · 2025 · IF 3.1

Synthesis of highly selective magnetic Fe3O4@SiO2–HOPO nanoparticles for efficient lutetium removal from wastewater

Huan Wang,Cen Shi,Liangliang Yin,Yanqin Ji

To remove lutetium from wastewater, superparamagnetic Fe 3 O 4 @SiO 2 –HOPO nanoparticles were successfully synthesized, containing approximately 460 μmol·g −1 of 3,2-HOPO. The material demonstrated high stability in 0.1 mol·L −1 HNO 3 and retained 97 % of its adsorption capacity after five cycles. The nanoparticles showed strong selectivity for lutetium, with minimal interference from coexisting ions in different matrices. This selective adsorption was primarily due to monodentate or multidentate chelation of 3,2-HOPO on the particle surface with lutetium. Adsorption equilibrium was achieved within 15 min, with a maximum capacity of 29 mg·g −1 , highlighting its potential for large-scale wastewater treatment.

CAS / MDL: 919-30-2 10025-77-1 7758-94-3 78-10-4

研究领域: 环境科学 · 材料科学

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MOLECULES · 2024 ·Vol. 29 ·期 23 ·5759 · IF 4.2

Preparation and Evaluation of a Combination of Chelating Agents for the Removal of Inhaled Uranium

Lintao Li,Runtian Li,Ruohan Guo,Shuang Guo,Xuan Qiao,Xinru Wu,Peng Han,Yunbo Sun,Xiaoxia Zhu,Zhuona Wu,Hui Gan,Zhiyun Meng,Guifang Dou,Ruolan Gu,Shuchen Liu

Inhalation of aerosolized uranium is recognized as a principal mode of exposure, posing significant risks of damage to the lungs, kidneys, and other vital organs. To enhance nuclide elimination from the body, chelating agents are employed; however, single-component chelators often exhibit limited spectral activity and low effectiveness, resulting in toxicologically relevant concentrations. We have developed a composite chelating agent composed of 3,4,3-Li(1,2-HOPO), DFP, and HEDP in optimized ratios, demonstrating marked improvements in eliminating inhaled uranium. The selection of these components was initially guided by an agarose gel dynamics method, focusing on uranium binding and removal efficacy. Optimization of the formula was conducted through response surface methodology in a cellular model. The compound’s ability to enhance survival rates in mice subjected to acute uranium inhalation was confirmed, showing a dose-dependent improvement in survival in severely affected mice. Comparative assessments indicated that this multifaceted chelating agent substantially surpasses the uranium tissue clearance achieved by individual chelating agents.

CAS / MDL: 30652-11-0

研究领域: 毒理学 · 药理学 · 核医学 · 环境健康

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Synthesis of highly selective magnetic Fe3O4@SiO2–HOPO nanoparticles for efficient lutetium removal from wastewater

Preparation and Evaluation of a Combination of Chelating Agents for the Removal of Inhaled Uranium