Enhanced and fast fluoride adsorption using cerium organic frameworks based hydrotalcite hybrid material  

作　　者：Antonysamy Jeyaseelan Ilango Aswin Kumar MuNaushad Natrayasamy Viswanathan 

机构地区：[1]Department of Chemistry,Anna University,University College of Engineering-Dindigul,Reddiyarchatram,Dindigul,624622,Tamilnadu,India [2]Faculty of Civil Engineering,Departmentof Landscapeand Water Conservation,CzechTechnical University in Prague,Thakurova 6629,Prague6,Czch Republic [3]Department of Chemistry,College of Science,King Saud University,P.0.Box 2455,Riyadh,11451,Saudi Arabia

出　　处：《Journal of Rare Earths》2023年第12期2010-2017,I0007,共9页稀土学报（英文版）

基　　金：Project supported by Council of Scientific and Industrial Research (CSIR),New Delhi,India (01/(2965)/19/EMR-Ⅱ)。

摘　　要：In this present study,hydrotalcite(HT) implanted Ce-BTC metal organic frameworks(MOFs) abbreviated as HT-CeMOFs were developed for rapid fluoride adsorption.The microscopic properties of the prepared HT-CeMOFs material were studied with different characterization techniques.To identify the fluoride adsorption route,the batch experiments such as pH,dosage,adsorption time,interfering anions,initial ion concentration,selectivity,temperature and pHzpcstudies were portrayed towards fluoride removal by HT-CeMOFs.The utmost defluoridation capacity(DC) of HT-CeMOFs is found to be 4662 mg/(F·kg).Fluoride adsorption route onto HT-CeMOFs is followed by Langmuir isotherm and pseudo-second-order with intraparticle diffusion model.Fluoride removal by HT-CeMOFs is spontaneous with endothermic nature.Adsorption mechanism of HT-CeMOFs towards fluoride is followed by electrostatic interaction,ion-exchange and complexation.The regeneration and field exploration of HT-CeMOFs towards fluoride adsorption were performed and their results reveal that the HT-CeMOFs are regenerable and more suitable at field conditions.

关 键 词：HYDROTALCITE Metal organic frameworks CERIUM REGENERATION DEFLUORIDATION Rare earths 

分 类 号：TB34[一般工业技术—材料科学与工程]