Ultrasmall Iron Oxide Nanoparticles for Biomedical Applications: Improving the Colloidal and Magnetic Properties

被引：85

作者：

Costo, Rocio ^{[1
]}

Bello, Valentina ^{[2
]}

Robic, Caroline ^{[3
]}

Port, Marc ^{[3
]}

Marco, Jose F. ^{[4
]}

Puerto Morales, M. ^{[1
]}

Veintemillas-Verdaguer, Sabino ^{[1
]}

机构：

[1] Inst Ciencia Mat Madrid CSIC, Madrid 28049, Spain

[2] Univ Padua, Dipartimento Fis, I-35131 Padua, Italy

[3] Guerbet Res, F-95943 Roissy, France

[4] Inst Quim Fis Rocasolano CSIC, Madrid 28006, Spain

来源：

LANGMUIR | 2012年 / 28卷 / 01期

关键词：

LASER PYROLYSIS; GAMMA-FE2O3; NANOPARTICLES; MAGHEMITE NANOPARTICLES; SURFACE; SIZE; FERROFLUIDS; POINTS; CHARGE;

D O I：

10.1021/la203428z

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A considerable increase in the saturation magnetization, Ms (40%), and initial susceptibility of ultrasmall (<5 nm) iron oxide nanoparticles prepared by laser pyrolysis was obtained through an optimized acid treatment. Moreover, a significant enhancement in the colloidal properties, such as smaller aggregate sizes in aqueous media and increased surface charge densities, was found after this chemical protocol. The results are consistent with a reduction in nanoparticle surface disorder induced by a dissolution recrystallization mechanism.

引用

页码：178 / 185

页数：8

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