林业工程学报2018，Vol.3Issue(3)：52-56,5.DOI:10.13360/j.issn.2096-1359.2018.03.009
Fe3O4@SiO2@PAA多层核-壳结构复合微球的制备及吸附染料研究
Preparation of Fe3O4@SiO2@PAA multilayer core-shell structural composite microspheres and its dye adsorption performance
摘要
Abstract
In the present study, Fe3 O4 magnetic nanoparticles were fabricated by solvothermal method. Tetraethyl ortho-silicate ( TEOS) was used as precursor to fabricate a layer of SiO2 on the surface of Fe3 O4 nanoparticles. 3-( methac-ryloyl oxygen) trimethoxy silane ( APTES) was used as silane coupling agent to modify the surface of SiO2@Fe3 O4 with double carbon bonds, then Fe3 O4/silicon dioxide/poly ( acrylate acid) ( Fe3 O4@SiO2@PAA) multi-layer core-shell structural composite microspheres were prepared by cross-linking precipitation polymerization of acrylate acid and divinyl benzene monomers without the use of surfactants and stabilizers. The as-synthesized particles have been charac-terized by means of transmission electron microscopy ( TEM) , Fourier transform infrared spectroscopy ( FT-IR) and thermogravimetric analysis ( TGA) . The size of the prepared Fe3 O4 nanoparticles was about 150-250 nm. The Fe3 O4 nanoparticles exhibited good water-solubility and were successfully encapsulated by SiO2 shell. The PAA was success-fully grafted onto the surface of SiO2 to form Fe3 O4@SiO2@PAA multilayer core-shell composite microspheres. The results of Fe3 O4@SiO2@PAA microspheres showed high performance in the adsorption of Rhodamine 6G and meth-ylene blue. The 10-minute adsorption reached 1.04 mg/g and 1.14 mg/g.关键词
多层核壳结构/复合微球/染料/吸附性能Key words
multilayer core-shell structural/composite microspheres/dye/adsorptive property分类
化学化工引用本文复制引用
徐鹏,梁旭光,曹小勇,刘松灿,王利莹,高勤卫..Fe3O4@SiO2@PAA多层核-壳结构复合微球的制备及吸附染料研究[J].林业工程学报,2018,3(3):52-56,5.基金项目
江苏省自然科学基金(青年基金) ( BK20130969) （青年基金）
江苏省生物质绿色燃料与化学品重点实验室开放课题( JSBGFC14015). （ JSBGFC14015）
