{"title":"Synthesis of highly selective magnetic Fe3O4@SiO2–HOPO nanoparticles for efficient lutetium removal from wastewater","authors":"Huan Wang, Cen Shi, Liangliang Yin, Yanqin Ji","doi":"10.1016/j.cplett.2025.141911","DOIUrl":null,"url":null,"abstract":"<div><div>To remove lutetium from wastewater, superparamagnetic Fe<sub>3</sub>O<sub>4</sub>@SiO<sub>2</sub>–HOPO nanoparticles were successfully synthesized, containing approximately 460 μmol·g<sup>−1</sup> of 3,2-HOPO. The material demonstrated high stability in 0.1 mol·L<sup>−1</sup> HNO<sub>3</sub> 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<sup>−1</sup>, highlighting its potential for large-scale wastewater treatment.</div></div>","PeriodicalId":273,"journal":{"name":"Chemical Physics Letters","volume":"864 ","pages":"Article 141911"},"PeriodicalIF":2.8000,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical Physics Letters","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S000926142500051X","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
To remove lutetium from wastewater, superparamagnetic Fe3O4@SiO2–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 HNO3 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.
期刊介绍：
Chemical Physics Letters has an open access mirror journal, Chemical Physics Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review.
Chemical Physics Letters publishes brief reports on molecules, interfaces, condensed phases, nanomaterials and nanostructures, polymers, biomolecular systems, and energy conversion and storage.
Criteria for publication are quality, urgency and impact. Further, experimental results reported in the journal have direct relevance for theory, and theoretical developments or non-routine computations relate directly to experiment. Manuscripts must satisfy these criteria and should not be minor extensions of previous work.
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