Preparation and Characterization of Fe3O4@Au Nanoparticles Used as Precursor of Ferrofluids

被引：4

作者：

Li Decai ^{[1
]}

Zhang Zhili ^{[1
]}

Zhang Shaolan ^{[1
]}

机构：

[1] Beijing Jiaotong Univ, Sch Mech Elect & Control Engn, Beijing 100044, Peoples R China

来源：

TESTING AND EVALUATION OF INORGANIC MATERIALS I | 2011年 / 177卷

关键词：

Fe(3)O(4)@Au; core-shell structure; magnetic nanoparticles; PARTICLES;

D O I：

10.4028/www.scientific.net/AMR.177.415

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The Fe(3)O(4) magnetic nanoparticles were prepared through co-precipitation of Fe(3+) and Fe(2+) with ammonium hydroxide. The initially obtained Fe(3)O(4) nanoparticles were then coated by gold in solution of chloroauric acid through connecting of 3-aminopropyropyl thriethoxysilane (3-APTES) and the obtained Fe(3)O(4)@Au nanoparticles were further characterized by X-ray photoelectron spectrum (XPS). During the process, the influences of chloroauric acid, reducing agent, coupling agent and nanoparticles of Fe(3)O(4) were studied. The results showed that core-shell structure Fe(3)O(4)@Au particles have diameters of about 20nm in size synthesized from sodium citrate as reducing agent with 10.08 emu/g of saturation magnetization.

引用

页码：415 / 417

页数：3

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