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Title of Journal: J Nanopart Res

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Abbravation: Journal of Nanoparticle Research

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Springer Netherlands

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DOI

10.1002/mds.22776

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1572-896X

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Synthesis and magnetic property of T4 virus-supported gold-coated iron ternary nanocomposite

Authors: Ziming Xu, Hongjing Sun, Faming Gao, Li Hou, Na Li,

Publish Date: 2012/11/03
Volume: 14, Issue:12, Pages: 1267-
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Abstract

Herein, we present a novel method based on the use of the symmetrical T4 bacteriophage capsid as a scaffold for preparing the gold-coated iron ternary core/shell nanostructure. Results showed that the thick gold shell was obtained to effectively protect Fe core from oxidation. Magnetic measurements showed that the nanocomposites were superparamagnetic at room temperature with a blocking temperature of about 35 K. At 3 K, its coercivity of 1142.86 Oe was larger than the existing experimental values. The magnetic property of Au/T4 was also tested, demonstrating the source of the magnetic sample arising from the Fe core only. The absorption spectrum of the Fe@Au/T4 complex was measured and compared with gold/virus. Different thickness gold shells were controlled in the synthesis by tuning the Au salt addition. On the basis of results and discussion, we further speculated the general growing mechanism of the template-supported Fe@Au process.Financial support from the National Natural Science Foundation of China (Grant No. 21071122) and Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20091333110009) and the Natural Science Foundation of Hebei (Grant No. ZD2010112, E2010001169, 11965152D, 2011162).


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  12. In vitro study revealed different size behavior of different nanoparticles
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  17. Halloysite nanotubes grafted hyperbranched (co)polymers via surface-initiated self-condensing vinyl (co)polymerization
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