Synthesis of Variable-Sized Fe3O4 Nanocrystals by Visible Light Irradiation at Room Temperature

被引：44

作者：

Chen, Rufen ^{[1
]}

Song, Guoqiang ^{[1
]}

Wei, Yu ^{[1
]}

机构：

[1] Hebei Normal Univ, Coll Chem & Mat Sci, Shijiazhuang 050016, Hebei, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2010年 / 114卷 / 32期

关键词：

AQUEOUS DISPERSIONS; NANOPARTICLES; PARTICLES; PHOTOOXIDATION; DEGRADATION; MECHANISM; DYE;

D O I：

10.1021/jp912162g

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A rational new method for the synthesis of variable-sized Fe3O4 nanoparticles by aerial oxidation of Fe(OH)(2) under visible light irradiation in the presence of trace EDTA has been investigated. The size of the Fe3O4 nanocrystals was controlled at about 11.5-30.0 nm by varying the reaction conditions in aqueous solution at room temperature. The oxidation reaction was significantly accelerated by visible light in the presence of EDTA. A rapid oxidation rate was favorable for decreasing the size of the Fe3O4 nanocrystals. The as-obtained Fe3O4 particles showed uniform spherical shape and a narrow size distribution. The variable-sized Fe3O4 nanocrystals exhibited different magnetic properties.

引用

页码：13409 / 13413

页数：5

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