摘要
以二价铁盐和三价铁盐为原料,采用化学共沉淀法制备了磁性纳米四氧化三铁(Fe_3O_4),并采用3-氨基丙基-三甲氧基硅烷对其进行氨基化,制备出氨基化纳米Fe_3O_4。对氨基化纳米Fe_3O_4进行了表征及分析。研究结果表明:氨基已成功在纳米Fe_3O_4颗粒表面修饰,制得的氨基化纳米Fe_3O_4不含羟基铁等其他铁氧化物,改性后材料的磁性并没有发生明显变化。同时,研究了氨基化纳米Fe_3O_4吸附水中氟离子(F-)的动力学吸附机理,对F-的平衡吸附容量为4.7393mg/g,吸附符合动力学二级方程。
Fe3O4 magnetic nanoparticles were prepared with the bivalent iron salt and trivalent iron salt as raw materials,and coprecipitation method.3-Aminopropyltrimethoxysilane was used to prepare amination Fe3O4 nanoparticle.Fe3O4 nanoparticles were characterized and analyzed.It was confirmed that the amino group was successfully modified on the surface of Fe3O4 nanoparticles,and the samples were free of other iron oxides such as hydroxyl iron.And the magnetism of material did not show great change after the modification.At the same time,the kinetic mechanism of adsorption of fluoride ions（F-）in ammoniated nano-Fe3O4 was studied.The equilibrium adsorption capacity of F-was 4.7393 mg/g,and the adsorption conformed to the kinetic second order equation.
作者
曾琪静
王逸峰
杨静
任月明
Zeng Qijing;Wang Yifeng;Yang Jing;Ren Yueming(Xinjiang Academy o{ Environmental Protection Science,Xinjiang Key Laboratory for Environmental Pollution Monitoring and Risk Warning,Urumqi 830011;College of Material Science and Chemical Engineering,Key Laboratory of Superlight Materials and Surface Technology,Ministry of Education,Harbin Engineering University,Harbin 150090)
出处
《化工新型材料》
CAS
CSCD
北大核心
2018年第7期220-223,共4页
New Chemical Materials
基金
国家重点研发计划水资源高效开发利用专项(2016YFC0400505)
国家重点研发计划"政府间国际科技创新合作"重点专项(2016YFE0123800)
新疆维吾尔自治区公益性科研院所基本科研业务经费资助项目(KY2017125)
新疆维吾尔自治区科技支疆项目(2016E02102)
关键词
纳米FE3O4
氨基化
表征
氟离子
吸附机理
Fe3 O4 nanoparticle
amination
characterization
F^-
kinetic mechanism
