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

页码：105 / 108

页数：4

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