Magnetic recyclable metal-organic framework sheets grafted with curcumin for highly efficient adsorption and sensitive detection of fluoride.

IF 5.6 1区化学 Q1 CHEMISTRY, ANALYTICAL

Talanta Pub Date : 2025-10-01 Epub Date: 2025-04-14 DOI:10.1016/j.talanta.2025.128156

Shisen Li, Yinghui Wang, Zhaopeng Yang, Ping Liu, Yanting Ren, Yue Li, Haiyan Jiang, Qingli Yang, Junghwan Kim, Yongchao Ma

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引用次数: 0

Abstract

The contents of fluoride in drinking water should be limited to a safe range. Hence, design and development of a simple and efficient technology for adsorption and detection of fluoride is urgently required. We presented a curcumin in situ grafted MOF magnetic material (Fe₃O₄/MOF-Cur) for dual-functionalized applications of fluoride detection and adsorption. Owing to the electrostatic interaction, ligand exchange at the metal sites and boron-fluorine complexation, the adsorption capacity of Fe₃O₄/MOF-Cur for fluoride is 99.92 mg/g, and the detection limit is 1.17 μM. The fluoride adsorption behavior on different active units was further visualized by theoretical calculations. Favorable stability (79.52 mg/g after 5 adsorption-desorption cycles and insignificant change of fluorescence intensity within 30 days), mild reaction conditions (pH = 3-5) and excellent anti-interference ability promote the application of Fe₃O₄/MOF-Cur in real samples. Finally, the paramagnetic properties (29 emu/g) allow for easy recovery from water. These findings deepen the understanding on the design and development of dual-functionalized MOF materials, and prove the application potential of Fe₃O₄/MOF-Cur for the remediation of fluoride-related environmental pollution.

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姜黄素接枝磁性可回收金属-有机骨架片高效吸附和灵敏检测氟化物。

饮用水中氟化物的含量应控制在安全范围内。因此，迫切需要设计和开发一种简单有效的氟化物吸附和检测技术。我们提出了一种姜黄素原位接枝的MOF磁性材料（Fe3O4/MOF- cur），用于氟检测和吸附的双功能化应用。由于静电相互作用、金属位配体交换和硼氟络合作用，Fe3O4/MOF-Cur对氟的吸附量为99.92 mg/g，检出限为1.17 μM。通过理论计算进一步可视化了不同活性单元对氟的吸附行为。良好的稳定性（吸附-解吸循环5次后为79.52 mg/g， 30天内荧光强度变化不大）、温和的反应条件（pH = 3-5）和优异的抗干扰能力促进了Fe3O4/MOF-Cur在实际样品中的应用。最后，顺磁性（29 emu/g）使其易于从水中回收。这些发现加深了对双功能化MOF材料的设计和开发的认识，并证明了Fe3O4/MOF- cur在氟相关环境污染修复中的应用潜力。

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

Talanta 化学-分析化学

CiteScore

12.30

自引率

4.90%

发文量

861

审稿时长

29 days

期刊介绍： Talanta provides a forum for the publication of original research papers, short communications, and critical reviews in all branches of pure and applied analytical chemistry. Papers are evaluated based on established guidelines, including the fundamental nature of the study, scientific novelty, substantial improvement or advantage over existing technology or methods, and demonstrated analytical applicability. Original research papers on fundamental studies, and on novel sensor and instrumentation developments, are encouraged. Novel or improved applications in areas such as clinical and biological chemistry, environmental analysis, geochemistry, materials science and engineering, and analytical platforms for omics development are welcome. Analytical performance of methods should be determined, including interference and matrix effects, and methods should be validated by comparison with a standard method, or analysis of a certified reference material. Simple spiking recoveries may not be sufficient. The developed method should especially comprise information on selectivity, sensitivity, detection limits, accuracy, and reliability. However, applying official validation or robustness studies to a routine method or technique does not necessarily constitute novelty. Proper statistical treatment of the data should be provided. Relevant literature should be cited, including related publications by the authors, and authors should discuss how their proposed methodology compares with previously reported methods.