应用化学2025，Vol.42Issue(9)：1245-1256,12.DOI:10.19894/j.issn.1000-0518.250086
基于(2-乙基己基胺基)甲基膦酸单-2-乙基己基酯的离子印迹材料及其在微量钪去除方面的应用
Preparation of Ion-Imprinted Material Based on 2-Ethylhexylamino Methyl Phosphonic Acid Mono-2-Ethylhexyl Ester Extractant and Its Application for the Removal of Trace Scandium
摘要
Abstract
Ion-imprinted material P-IIM was prepared using Sc3+-2-ethylhexylamino methyl phosphonic acid mono-2-ethylhexyl ester(HEHAMP)chelate as a template for the selective adsorption of scandium and characterized by Fourier transform infrared(FT-IR)spectrometer,thermal gravimetric analyzer(TGA),and scanning electron microscopy(SEM),etc.P-IIM can not be obtained when the percentage of HEHAMP extractant is more than 50%.The adsorption of Sc3+ions in chloride solution by P-IIM was investigated and the effects of extractant mass,initial pH value,time,initial Sc3+concentration and other coexisting metals were evaluated.The adsorption of Sc3+by P-IIM increases gradually with the increasing content of HEHAMP extractant,while it first increases and then decreases as the initial pH of the solution increases.The adsorption capacity is the highest when the pH is 2.The adsorption of Sc3+follows a quasi-two-stage kinetic model and is dominated by monolayer adsorption.P-IIM can be applied in the removal of trace scandium from rare earth solutions.The removal rate of scandium is more than 98%.关键词
(2-乙基己基胺基)甲基膦酸单-2-乙基己基酯/离子印迹材料/吸附/钪/选择性Key words
2-Ethylhexylamino methyl phosphonic acid mono-2-ethylhexyl ester/Ion-imprinted material/Adsorption/Scandium/Selectivity分类
化学化工引用本文复制引用
李成,李艳玲,李松松,罗小龙,邓必成,廖伍平..基于(2-乙基己基胺基)甲基膦酸单-2-乙基己基酯的离子印迹材料及其在微量钪去除方面的应用[J].应用化学,2025,42(9):1245-1256,12.基金项目
国家重点研发项目(No.2022YFC2905201)资助 Supported by the National Key Research and Development Project(No.2022YFC2905201) （No.2022YFC2905201）
