硅酸盐学报2016，Vol.44Issue(10)：1522-1531,10.DOI:10.14062/j.issn.0454-5648.2016.10.21
磁性纳米颗粒/SiO2多孔复合干凝胶的制备及表征
Preparation and Characterization of Magnetic Nanoparticles/SiO2 Porous Composite Xerogels
摘要
Abstract
A magnetic porous aerogel composite was preparedvia a sol–gel method and in–situ synthesis of Ni/Cu ferrite spinel. The microstructure, magnetism and adsorption ability were characterized. The results show that the organic molecular chain of glycollic acid in precursor is combined with inorganic phase to form the skeleton and the doublely-connected pore structure, the porosity of as–synthesized composite aerogels is 73.22%, and the bulk density is 0.36 g/cm3, with an average grading of 16 µm; the magnetic nanoparticles distribute uniformly in the SiO2 matrix. The specific surface area of samples decreases and the saturation magnetization increases with the increase of the calcination temperature. The composite as-prepared presents a maximum capacity of 100.67 mg/g, can adsorb Ce(IV) from aqueous solution at a superior performance of recycle ability , and can be separated by a magnetic field.关键词
溶胶-凝胶/磁性/二氧化硅/多孔材料Key words
sol-gel/magnetic/silica/porous material分类
通用工业技术引用本文复制引用
付慧琴,丁新更,任春溶,李文琪,杨辉..磁性纳米颗粒/SiO2多孔复合干凝胶的制备及表征[J].硅酸盐学报,2016,44(10):1522-1531,10.基金项目
中央高校基本科研业务费专项(2016QNA4008)。 （2016QNA4008）
