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Construction of HAnW-based nanotwigs for removing inorganic fluorion in wastewater

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Abstract

The environmental pollution with fluoride compounds was currently being paid more and more attention as it threatens the safety of animal and human life in an ecosystem. In this study, an eco-friendly adsorbing material for removing fluoride ion (F) was prepared by hydroxyapatite nanowires (HAnWs), a typical biocompatible inorganic conjugates. UiO66, a typical zirconium-based metal–organic framework (MOF), was conjugated onto HAnW by a simple in situ hydrothermal reaction, which afforded a novel HAnW-based nanotwigs of conjugates like millet (UiO66@HAnWs). Being characterized by SEM, EDS, FT-IR, XRD, XPS, and TGA, the obtained UiO66@HAnWs were applied to removing F in wastewater, and its adsorption capacity was optimized. It was found that UiO66@HAnWs had a bigger specific surface area (115.310 m2/g), and its efficiency for removing F got to 99.3%, which was greatly improved than that of related materials. It was considered that the adsorption of F on UiO66@HAnWs was mainly multi-molecular layer adsorption, which fluoride ions aggregate on the Zr(IV) active sites to attain ligand switching, and the nanoconjugated structure like nanotwigs of millet greatly improved its adsorption capacity. In summary, a novel eco-friendly UiO66@HAnWs with nanoconjugated structure could be constructed by simple hydrothermal method, which the agglomeration defects of MOFs were not only ameliorated, but also its adsorption capacity was greatly improved.

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All data generated or analyzed during this study are included in this published article [and its supplementary information files].

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Funding

This study was financially supported by the National Natural Science Foundation of China (21865030).

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Meiling Zhou: validation; writing—review and editing. Hua Yang: validation; writing—review and editing. Zejun Wang: writing—original draft; data curation; formal analysis; writing. Jiarui Ren: investigation, conceptualization. Rongmin Wang: supervision; project administration; funding acquisition; conceptualization; writing—review and editing. Yufeng He: project administration, visualization.

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Correspondence to Yufeng He.

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Responsible Editor: Tito Roberto Cadaval Jr.

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The original online version of this article was revised: The correct affiliation of Rongmin Wang is modified in the original published proof.

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Zhou, M., Yang, H., Wang, Z. et al. Construction of HAnW-based nanotwigs for removing inorganic fluorion in wastewater. Environ Sci Pollut Res 30, 32641–32654 (2023). https://doi.org/10.1007/s11356-022-24436-0

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  • DOI: https://doi.org/10.1007/s11356-022-24436-0

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