Preparation and characterization of magnetic nanoparticles with bifunctional surface layer Si(CH2)3NH2/SiCH3 (or SiC3H7-n)

被引：15

作者：

Melnyk, Inna V. ^{[1
]}

Zub, Yuriy L. ^{[1
]}

机构：

[1] Natl Acad Sci Ukraine, Chuiko Inst Surface Chem, 17 Gen Naumov Str, UA-03164 Kiev, Ukraine

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2012年 / 154卷

关键词：

Magnetite nanoparticles; Bifunctional surface layer; The sorption of HSA;

D O I：

10.1016/j.micromeso.2011.11.012

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The bifunctional layers of Si(CH2)(3)NH2/ SiCH3 and Si(CH2)(3)NH2/ SiC3H7-n on the surface of Fe3O4 magnetic particles are obtained by the developed method based on the reaction of hydrolytic polycondensation of tetraethoxysilane and appropriate trifunctional silanes. The DRIFT spectra indicate the formation of the silica bounds framework in the surface layers of magnetite nanoparticles and the presence of related functional groups. The content of amine groups at the level of 1.6-2.2 mmol/g is confirmed by the acid-base titration. The presence of the amine groups along with the methyl (or n-propyl) groups in the surface layer enhances the sorption capacity of samples towards the HSA. The resulting powder materials retain their magnetic properties and are perspective for the usage in medical practice. (C) 2011 Elsevier Inc. All rights reserved.

引用

页码：196 / 199

页数：4

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