Multifunctional nanoparticles as effective adsorbents for fluoride removal from synthetic and drinking waters: equilibrium, kinetics, and thermodynamics

IF 1.7 4区化学 Q4 CHEMISTRY, PHYSICAL Reaction Kinetics, Mechanisms and Catalysis Pub Date : 2024-08-09 DOI:10.1007/s11144-024-02681-3

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

{"title":"Multifunctional nanoparticles as effective adsorbents for fluoride removal from synthetic and drinking waters: equilibrium, kinetics, and thermodynamics","authors":"Nesrine Kamoun, Sahar Raissi, Mohamed Kadri Younes, Hamza Elfil","doi":"10.1007/s11144-024-02681-3","DOIUrl":null,"url":null,"abstract":"<div><p>In this work, a series of bimetallic nano-oxide ZrO<sub>2</sub>–CeO<sub>2</sub> xerogel adsorbent with different Ce/Zr molar ratio (0.1, 0.2, 0.3 and 0.5) were prepared in one step via sol–gel method in order to obtain the highest-performing composition for fluoride removal from drinking water. BET, SEM, EDX, TEM, FTIR spectroscopy, and XRD techniques were performed to characterize the solids before and after fluoride adsorption. The selected material exhibits a high surface area (S<sub>BET</sub> = 255 m<sup>2</sup> g<sup>−1</sup>) and a large porosity (V<sub>P</sub> = 0.30 cm<sup>3</sup> g<sup>−1</sup>). FTIR spectroscopy demonstrated the significant role played by the adjunct sulfate anion and superficial hydroxyl groups in the defluorination process. Thermodynamic study confirms that the sorption is spontaneous and endothermic. Our adsorbent's behavior for the removal of fluoride is described by the Freundlich isotherm model. The pseudo-second order kinetic model represents the adsorption kinetic process. Less than 1 min, 100% of fluoride removal is reached in a wide pH range (2–8). The results of this study were effectively applied to natural drinking water in Tunisia. The development of innovative water treatment technology can be effectively advanced by using our multifunctional nano-oxide.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":750,"journal":{"name":"Reaction Kinetics, Mechanisms and Catalysis","volume":"137 6","pages":"3393 - 3415"},"PeriodicalIF":1.7000,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Reaction Kinetics, Mechanisms and Catalysis","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s11144-024-02681-3","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}

引用次数: 0

Abstract

In this work, a series of bimetallic nano-oxide ZrO₂–CeO₂ xerogel adsorbent with different Ce/Zr molar ratio (0.1, 0.2, 0.3 and 0.5) were prepared in one step via sol–gel method in order to obtain the highest-performing composition for fluoride removal from drinking water. BET, SEM, EDX, TEM, FTIR spectroscopy, and XRD techniques were performed to characterize the solids before and after fluoride adsorption. The selected material exhibits a high surface area (S_BET = 255 m² g⁻¹) and a large porosity (V_P = 0.30 cm³ g⁻¹). FTIR spectroscopy demonstrated the significant role played by the adjunct sulfate anion and superficial hydroxyl groups in the defluorination process. Thermodynamic study confirms that the sorption is spontaneous and endothermic. Our adsorbent's behavior for the removal of fluoride is described by the Freundlich isotherm model. The pseudo-second order kinetic model represents the adsorption kinetic process. Less than 1 min, 100% of fluoride removal is reached in a wide pH range (2–8). The results of this study were effectively applied to natural drinking water in Tunisia. The development of innovative water treatment technology can be effectively advanced by using our multifunctional nano-oxide.

Graphical abstract

Abstract Image

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

多功能纳米颗粒作为有效吸附剂去除合成水和饮用水中的氟化物：平衡学、动力学和热力学

本研究通过溶胶-凝胶法一步制备了一系列具有不同Ce/Zr摩尔比（0.1、0.2、0.3和0.5）的双金属纳米氧化物ZrO2-CeO2异凝胶吸附剂，以获得去除饮用水中氟化物的最高性能成分。对吸附氟化物前后的固体进行了 BET、SEM、EDX、TEM、傅立叶变换红外光谱和 XRD 表征。所选材料具有较高的比表面积（SBET = 255 m2 g-1）和较大的孔隙率（VP = 0.30 cm3 g-1）。傅立叶变换红外光谱显示，硫酸根阴离子和表面羟基在脱氟过程中发挥了重要作用。热力学研究证实，吸附过程是自发的，并且是内热的。Freundlich 等温线模型描述了我们的吸附剂去除氟化物的行为。伪二阶动力学模型表示了吸附动力学过程。在较宽的 pH 值范围（2-8）内，不到 1 分钟就能达到 100% 的氟去除率。这项研究的结果被有效地应用于突尼斯的天然饮用水。利用我们的多功能纳米氧化物，可以有效推动创新水处理技术的发展。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

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.