磁性Fe_(3)O_(4)@SiO_(2)-HEHEHP复合材料的制备及其对Y(Ⅲ)的吸附  

Preparation of Magnetic Fe_(3)O_(4)@SiO_(2)-HEHEHP Composite and Its Adsorption on Y(Ⅲ)

作　　者：昝苗苗 刘嘉铭 王杰 周键 彭家庆 何世伟 肖燕飞[1,2] ZAN Miaomiao;LIU Jiaming;WANG Jie;ZHOU Jian;PENG Jiaqing;HE Shiwei;XIAO Yanfei(Faculty of Materials Metallurgy and Chemistry,Jiangxi University of Science and Technology,Ganzhou 341000,Jiangxi,China;Ganzhou Engineering Technology Research Center of Green Metallurgy and Process Intensification,Ganzhou 341000,Jiangxi,China;Key Laboratory of Ionic Rare Earth Resources and Environment,Ministry of Natural Resources,Jiangxi University of Science and Technology,Ganzhou 341000,Jiangxi,China)

机构地区：[1]江西理工大学材料冶金化学学部,江西赣州341000 [2]赣州市绿色冶金与过程强化工程技术研究中心,江西赣州341000 [3]江西理工大学自然资源部离子型稀土资源与环境重点实验室,江西赣州341000

出　　处：《有色金属（冶炼部分）》2023年第11期113-121,共9页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家重点研发计划项目(2021YFC2902202,2020YFC1909002);国家自然科学基金资助项目(52274351,51964018));江西省“双千计划”科技创新高端人才(青年)项目(jxsq2019201116);江西省青年井冈学者奖励计划资助项目(QNJG2019056);自然资源部离子型稀土资源与环境重点实验室开放基金资助项目(2022IRERE203)。

摘　　要：稀土常规提取过程会产生大量稀土废液,对环境造成污染,并导致稀土资源流失。针对此问题,采用溶胶-凝胶法制备了Fe_(3)O_(4)@SiO_(2)-HEHEHP磁性杂化材料,将其作为吸附剂,对水相低浓度稀土离子进行富集回收,通过XRD、SEM、EDS、FT-IR、BET、磁性能分析等测试方法探究了FSP的结构形貌等物相特征,研究了FSP对于Y(Ⅲ)的吸附行为。结果表明,FSP具有核壳结构,外层的SiO_(2)能够在酸性环境下保护内部的Fe_(3)O_(4)纳米颗粒,HEHEHP萃取剂成功负载在磁性吸附材料表面;FSP表面含有较多的孔隙结构,对吸附具有一定的促进效果。磁性FSP可再生使用,三次循环使用后的吸附率仍达86.29%。The conventional extraction process of rare earth will produce a large amount of rare earth waste solution,which will pollute the environment and lead to the loss of rare earth resources.To solve this problem,Fe_(3)O_(4)@SiO_(2)-HEHEHP(hereafter referred to as FSP)magnetic hybrid material was prepared by sol-gel method and used as adsorbent to enrich and recover rare earth ions with low concentration in aqueous phase.The structural morphology and other physical and chemical characteristics of FSP were investigated by testing methods such as XRD,SEM,EDS,FT-IR,BET,and magnetic property analysis.The adsorption behavior of FSP on Y(Ⅲ)was investigated.The results show that the FSP has a core-shell structure and the outer layer of SiO_(2) can protect the inner Fe_(3)O_(4) nanoparticles under the acidic environment,and the HEHEHP extractant is successfully loaded on the surface of the magnetic adsorption material.FSP has a large number of porous structures on its surface,which has a certain promoting effect on adsorption.The magnetic FSP can be regenerated and used,and the adsorption rate still reaches 86.29%after three cycles.

关 键 词：溶胶-凝胶法 稀土吸附 Fe_(3)O_(4)@SiO_(2)-HEHEHP 磁性杂化材料 

分 类 号：X703[环境科学与工程—环境工程]