Morphology control and texture of Fe3O4 nanoparticle-coated polystyrene microspheres by ethylene glycol in forced hydrolysis reaction

被引：43

作者：

Huang, ZB ^{[1
]}

Tang, FQ ^{[1
]}

Zhang, L ^{[1
]}

机构：

[1] Chinese Acad Sci, Tech Inst Phys & Chem, Beijing 100101, Peoples R China

来源：

THIN SOLID FILMS | 2005年 / 471卷 / 1-2期

关键词：

magnetite; polystyrene; porous coating; X-ray diffraction;

D O I：

10.1016/j.tsf.2004.04.042

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effects of ethylene glycol (EG) on morphology and texture of the magnetite shell/core polystyrene microspheres produced from a forced hydrolysis reaction of FeCl2 solution were investigated. The morphology of magnetite-shell of synthetic composite spheres was dependent on EG concentration. They changed from large sphere with the shell-thickness of ca. 35 nm to corrugated films with increasing EG concentration in the coating solution accompanying a reduction of their shell-particles size to 10 nm. The magnetite coating on latex is formed by a phase transformation from beta-FeOOH to magnetite due to the oxidation from Fe (2+) to Fe3+ and adsorption of a lot of Fe2+ ions. The shell magnetite formed with EG was hydro-magnetite with a crystal lattice distortion, and they exhibited a polycrystalline nature. The nanoporous magnetite shell was produced in the presence of EG acting as a templating agent. This paper indicates that good superparamagnetic magnetite particles in shell have been synthesized at 5% EG concentration. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：105 / 112

页数：8

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