Hydrothermal synthesis of large maghemite nanoparticles: influence of the pH on the particle size

被引：40

作者：

Horner, Olivier ^{[1
]}

Neveu, Sophie ^{[1
]}

de Montredon, Sophie ^{[1
]}

Siaugue, Jean-Michel ^{[1
]}

Cabuil, Valerie ^{[1
]}

机构：

[1] Univ Paris 06, CNRS, Lab Colloides & Interfaces Charges, UMR,ESPCI 7612, F-75252 Paris 05, France

来源：

JOURNAL OF NANOPARTICLE RESEARCH | 2009年 / 11卷 / 05期

关键词：

Maghemite nanoparticles; Hydrothermal synthesis; Autoclave; Colloids; AQUEOUS MAGNETIC LIQUIDS;

D O I：

10.1007/s11051-008-9582-x

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Maghemite nanoparticles with sizes in the range 10-110 nm and good monodispersity have been synthesized by co precipitation at room temperature from Fe(2+) and Fe(3+) ions by a (N(CH(3))(4)OH) solution, followed by an hydrothermal treatment at 200 A degrees C and an oxidation step with Fe(NO(3))(3). The influence of the incubation time (at 200 A degrees C) and of the pH of the autoclaved solution on the particles size has been studied. It was found that the pH value allows to tune the size of the maghemite particles.

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页码：1247 / 1250

页数：4

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