Issue 4, 2012
From the journal:

Journal of Materials Chemistry

One-step solid-phase synthesis of ultrasmall homogeneous face-centered tetragonal FePt nanoparticles encapsulated in thin carbon shells†

C. N. He*a  and  N. Q. Zhao*a  

* Corresponding authors

a School of Materials Science and Engineering and Tianjin Key Laboratory of Composites and Functional Materials, Tianjin University, Tianjin, China
E-mail: cnhe08@tju.edu.cn, nqzhao@tju.edu.cn

Abstract

Discrete, homogenous and ultrasmall (mostly 2–4 nm) L10-ordered fct FePt nanoparticles encapsulated in well-graphitized thin carbon shells have been prepared by a one-step solid-phase synthesis technique, which can be applied for the production of a number of metal alloy nanoparticles encapsulated in carbon shells. The as-synthesized FePt@C nanoparticles of size 2.1 ± 0.4 nm present superparamagnetic properties at room temperature. The 3.3 ± 0.6 nm size FePt@C nanoparticles have a high coercivity, up to 4.56 kOe at room temperature, and superior chemical stability in a high concentration HCl (10 M) solution. Furthermore, these nanoparticles functionalized non-covalently by phospholipid-poly(ethylene)glycol show biocompatibility with the tested cells (mouse macrophage and mouse L929 fibroblasts cells) in all test concentrations (0.025–0.2 mg mL−1).

Graphical abstract: One-step solid-phase synthesis of ultrasmall homogeneous face-centered tetragonal FePt nanoparticles encapsulated in thin carbon shells

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Article information

DOI
https://doi.org/10.1039/C1JM12408K
Article type
Paper
Submitted
29 May 2011
Accepted
19 Oct 2011
First published
17 Nov 2011

J. Mater. Chem., 2012,22, 1297-1304

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One-step solid-phase synthesis of ultrasmall homogeneous face-centered tetragonal FePt nanoparticles encapsulated in thin carbon shells

C. N. He and N. Q. Zhao, J. Mater. Chem., 2012, 22, 1297 DOI: 10.1039/C1JM12408K

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