吉首大学学报（自然科学版）2025，Vol.46Issue(3)：46-61,16.DOI:10.13438/j.cnki.jdzk.2025.03.007
Fe3O4@SiO2@Fe-MIL-101的制备及其对硫酸锌电解液中氟化物的吸附去除
Preparation of a Fe3O4@SiO2@Fe-MIL-101 for the Adsorption Removal of Fluoride in Zinc Sulfate Electrolyte
摘要
Abstract
To remove the fluoride in zinc sulfate electrolyte to an appropriate level,mitigate environmental fluoride pollution,and drive the development of the hydrometallurgy industry of zinc,a novel Fe3O4@SiO2@Fe-MIL-101 magnetic composite material was successfully synthesized via the one-pot meth-od.Preparation conditions were optimized and structural characterization of this material conducted using FTIR,SEM,EDS,XRD and Hysteresis analysis.The results show that this composite exhibits a more rapid fluoride adsorption dynamics and a higher fluoride adsorption capacity(18.34 mg/g)and its ad-sorption behavior fitted for the first order dynamic model and the Freundlich isotherm model.The ad-sorption of fluorine by this composite is mainly physical adsorption according to the mean adsorption en-ergy(1.216 kJ/mol).The interfering ions co-existed in fluoride-containing solutions,like HCO3-,NO-and Cl-,have a significant effect on fluorine adsorption.This composite has also been proved with magnetism,higher adsorption selectivity and satisfactory reusability.When this composite is employed as an adsorbent for adsorption removing fluoride in zinc sulfate electrolyte,it exhibits higher pH-depend-ent behavior as well as high fluoride removal efficiency at pH 6.5.关键词
Fe3O4@SiO2@Fe-MIL-101复合材料/氟化物/去除/吸附/硫酸锌电解液Key words
Fe3O4@SiO2@Fe-MIL-101 composite/fluoride/removal/adsorption/zinc sulfate electrolyte分类
冶金工业引用本文复制引用
廖佳,王春梅,李飞,杨城城,郭先育,谭文涛,李辉..Fe3O4@SiO2@Fe-MIL-101的制备及其对硫酸锌电解液中氟化物的吸附去除[J].吉首大学学报（自然科学版）,2025,46(3):46-61,16.基金项目
National Natural Science Foundation of China(21865011) （21865011）
2024 Innovation and Entrepreneurship Project of College Student in Jishou University(JDCX20241122) （JDCX20241122）
