Synthesis and Characterization of Magnetic FePt/Au Core/Shell Nanoparticles

被引：38

作者：

Yano, Kazuaki ^{[1
]}

Nandwana, Vikas ^{[1
]}

Chaubey, Girija S. ^{[1
]}

Poudyal, Narayan ^{[1
]}

Kang, Shishou ^{[2
]}

Arami, Hamed ^{[1
]}

Griffis, John ^{[1
]}

Liu, J. Ping ^{[1
]}

机构：

[1] Univ Texas Arlington, Dept Phys, Arlington, TX 76019 USA

[2] Univ Alabama, Ctr Mat Informat Technol, Tuscaloosa, AL 35487 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2009年 / 113卷 / 30期

关键词：

SHELL NANOPARTICLES; SIZE;

D O I：

10.1021/jp901985u

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：

We report a two-step chemical solution process for synthesis of FePt/Au core/shell nanoparticles. First, FePt nanoparticles were synthesized using a typical polyol process. The as-synthesized FePt nanoparticles were then used as seed materials and were coated with gold shells by reduction of the gold precursors. The coated nanoparticles have been characterized using various structural and morphological measurements to confirm the FePt/Au core/shell morphology. The as-synthesized FePt/Au nantoparticles were found to be superparamagnetic and became ferromagnetic after annealing at 400 degrees C. The surface modification of FePt/Au core/shell nanoparticles from hydrophobic to hydrophilic was achieved through ligand exchange to make them water dispersible for potential biomedical applications.

引用

页码：13088 / 13091

页数：4

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