Influence of sulfate ions on adsorption properties of nano-zirconia: a crucial factor in the defluoridation of tap water

IF 1.7 4区化学 Q4 CHEMISTRY, PHYSICAL Reaction Kinetics, Mechanisms and Catalysis Pub Date : 2025-01-02 DOI:10.1007/s11144-024-02785-w

Nesrine Kamoun, Sahar Raissi, Mohamed Kadri Younes, Hamza Elfil

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Abstract

In the present investigation, we study the effect of the calcination temperature on the stability of sulfate ions in nano-sulfated zirconia, which play an important role in water defluoridation. Nano-sulfated zirconia adsorbents were developed for fluoride uptake from water. It showed excellent efficiency for Tunisian tap water treatment. This performance is due to the particular synthesis process using sol–gel approach in one- pot coupled to supercritical drying. The morphology and structure of the prepared materials were examined using N₂ physisorption, FTIR spectroscopy, SEM, pH_PZC, XRD, TEM and EDX spectroscopy. Textural properties revealed that all prepared nanoscale materials develop a mesoporous texture, a high porosity, and a large surface area, reaching 340 m² g⁻¹. FTIR spectroscopy and SEM analysis showed the formation of highly functionalized solids with various active sites and numerous cavities. TEM results confirmed the nanocrystalline nature of our solids. The different findings indicated that the functionalization of zirconia produces a particular material’s structure affected by calcination temperature. In the broad pH range of 2–8, the selected nano-sulfated zirconia exhibited a high fluoride removal rate of almost 99% in a shorter equilibrium time of 5 min. Investigations were conducted into the economic value, reusability, and regeneration potential.

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来源期刊

Reaction Kinetics, Mechanisms and Catalysis CHEMISTRY, PHYSICAL-

CiteScore

3.30

自引率

5.60%

发文量

201

审稿时长

2.8 months

期刊介绍： Reaction Kinetics, Mechanisms and Catalysis is a medium for original contributions in the following fields: -kinetics of homogeneous reactions in gas, liquid and solid phase; -Homogeneous catalysis; -Heterogeneous catalysis; -Adsorption in heterogeneous catalysis; -Transport processes related to reaction kinetics and catalysis; -Preparation and study of catalysts; -Reactors and apparatus. Reaction Kinetics, Mechanisms and Catalysis was formerly published under the title Reaction Kinetics and Catalysis Letters.