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Abstract:
Fluoride pollution is a serious environmental problem that is a risk to human health. Hence, the effective elimination of fluoride is urgent. Herein, a novel trimetallic Zr-La-Ce MOF was fabricated with a hydrothermal method and adapted to eliminate fluoride from water media. Characterization showed that the adsorbent presented a flower-like morphological structure with a large specific surface area of 682 m2 g-1. The adsorption property was further evaluated by examining the impact of fluoride concentration, solution pH, and coexisting anions. The adsorption capacity of Zr-La-Ce MOFs is above 110 mg g-1 at pH 2-9, indicating that Zr-La-Ce MOFs have a wide applied pH range, and the coexisting ions have a tiny impact on the fluoride removal performance, demonstrating an excellent fluoride selectivity. The sorption process adhered well to the Langmuir model and pseudo-second order kinetic model, and the maximum Langmuir sorption capacity was 167.61 mg g-1. Practical application investigation, regeneration performance evaluation, and safety experiments demonstrated that the Zr-La-Ce MOFs had excellent recycling performance, with the treated water lower than 1 mg L-1, and no precipitation of metal ions, which has certain potential for practical application and can provide insights and references for the preparation of multimetal MOFs.
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ACS APPLIED MATERIALS & INTERFACES
ISSN: 1944-8244
Year: 2025
Issue: 24
Volume: 17
Page: 35353-35363
8 . 5 0 0
JCR@2023
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ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 0
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