Wei Wang, Xiaoyi Shen*, Yan Liu, Mingyu Han and Yuchun Zhai,
{"title":"新型Zr4+掺杂mg - al层状双氢氧化物除氟吸附剂的合成及除氟性能","authors":"Wei Wang, Xiaoyi Shen*, Yan Liu, Mingyu Han and Yuchun Zhai, ","doi":"10.1021/acs.iecr.4c0497910.1021/acs.iecr.4c04979","DOIUrl":null,"url":null,"abstract":"<p >In this study, a novel fluoride removal adsorbent of the Zr<sup>4+</sup>-doped Mg–Al-layered double hydroxide (MgAlZr-LDH) was synthesized by a facile hydrothermal method, and the adsorbents before and after adsorption were characterized by SEM, XRD, FTIR, and XPS. The results of the adsorption experiments showed that adsorption reached equilibrium within 10 min. The adsorption kinetics and thermodynamics fitting indicated that the adsorption process followed the pseudo-second-order kinetic model and the Langmuir isotherm model. Its capacity for fluoride could reach up to 51.92 mg·g<sup>–1</sup> at room temperature. Additionally, the adsorbent is effective across a wide pH range and exhibits good selectivity for fluoride. Its adsorption capacity still remained above 75% after 5 reusability cycles. Additionally, the defluorination mechanism is proposed, including electrostatic attraction, ion exchange, and ligand exchange. MgAlZr-LDH can be used as an effective adsorbent for removing fluoride from wastewater and has promising application prospects.</p>","PeriodicalId":39,"journal":{"name":"Industrial & Engineering Chemistry Research","volume":"64 11","pages":"5949–5961 5949–5961"},"PeriodicalIF":3.9000,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A Novel Fluoride Removal Adsorbent of a Zr4+-Doped Mg–Al-Layered Double Hydroxide: Synthesis and Fluoride Removal Performance\",\"authors\":\"Wei Wang, Xiaoyi Shen*, Yan Liu, Mingyu Han and Yuchun Zhai, \",\"doi\":\"10.1021/acs.iecr.4c0497910.1021/acs.iecr.4c04979\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >In this study, a novel fluoride removal adsorbent of the Zr<sup>4+</sup>-doped Mg–Al-layered double hydroxide (MgAlZr-LDH) was synthesized by a facile hydrothermal method, and the adsorbents before and after adsorption were characterized by SEM, XRD, FTIR, and XPS. The results of the adsorption experiments showed that adsorption reached equilibrium within 10 min. The adsorption kinetics and thermodynamics fitting indicated that the adsorption process followed the pseudo-second-order kinetic model and the Langmuir isotherm model. Its capacity for fluoride could reach up to 51.92 mg·g<sup>–1</sup> at room temperature. Additionally, the adsorbent is effective across a wide pH range and exhibits good selectivity for fluoride. Its adsorption capacity still remained above 75% after 5 reusability cycles. Additionally, the defluorination mechanism is proposed, including electrostatic attraction, ion exchange, and ligand exchange. MgAlZr-LDH can be used as an effective adsorbent for removing fluoride from wastewater and has promising application prospects.</p>\",\"PeriodicalId\":39,\"journal\":{\"name\":\"Industrial & Engineering Chemistry Research\",\"volume\":\"64 11\",\"pages\":\"5949–5961 5949–5961\"},\"PeriodicalIF\":3.9000,\"publicationDate\":\"2025-03-06\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Industrial & Engineering Chemistry Research\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://pubs.acs.org/doi/10.1021/acs.iecr.4c04979\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Industrial & Engineering Chemistry Research","FirstCategoryId":"5","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acs.iecr.4c04979","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
A Novel Fluoride Removal Adsorbent of a Zr4+-Doped Mg–Al-Layered Double Hydroxide: Synthesis and Fluoride Removal Performance
In this study, a novel fluoride removal adsorbent of the Zr4+-doped Mg–Al-layered double hydroxide (MgAlZr-LDH) was synthesized by a facile hydrothermal method, and the adsorbents before and after adsorption were characterized by SEM, XRD, FTIR, and XPS. The results of the adsorption experiments showed that adsorption reached equilibrium within 10 min. The adsorption kinetics and thermodynamics fitting indicated that the adsorption process followed the pseudo-second-order kinetic model and the Langmuir isotherm model. Its capacity for fluoride could reach up to 51.92 mg·g–1 at room temperature. Additionally, the adsorbent is effective across a wide pH range and exhibits good selectivity for fluoride. Its adsorption capacity still remained above 75% after 5 reusability cycles. Additionally, the defluorination mechanism is proposed, including electrostatic attraction, ion exchange, and ligand exchange. MgAlZr-LDH can be used as an effective adsorbent for removing fluoride from wastewater and has promising application prospects.
期刊介绍：
ndustrial & Engineering Chemistry, with variations in title and format, has been published since 1909 by the American Chemical Society. Industrial & Engineering Chemistry Research is a weekly publication that reports industrial and academic research in the broad fields of applied chemistry and chemical engineering with special focus on fundamentals, processes, and products.
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