Preparation of magnetite nanoparticles in mesoporous copolymer template

被引：64
|
作者：
Rabelo, D
Lima, ECD
Reis, AC
Nunes, WC
Novak, MA
Garg, VK
Oliveira, AC
Morais, PC [1 ]
机构：
[1] Univ Brasilia, Inst Fis, BR-70919970 Brasilia, DF, Brazil
[2] Univ Fed Rio de Janeiro, Inst Fis, BR-21945970 Rio De Janeiro, Brazil
来源：
NANO LETTERS | 2001年 / 1卷 / 02期
关键词：
D O I：
10.1021/nl005533k
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Preparation of size-controllable magnetite (Fe3O4) nanoparticles by alkaline oxidation of ferrous ion adsorbed in sulfonated mesoporous styrene-divinylbenzene copolymer is described. It was observed that the magnetite nanoparticle size increases by ion-charging the sulfonated polymeric template with ferrous aqueous solution at increasing iron concentration. A simple model describing the amount of iron incorporation in the polymeric template is proposed. The magnetite-based composite was investigated by atomic absorption, transmission electron microscopy, Mossbauer spectroscopy, X-ray diffraction, and magnetization data.
引用
收藏
页码：105 / 108
页数：4
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