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Issue 2, 2012
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Controllable synthesis of monodisperse polyhedral nickel nanocrystals

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Abstract

Monodisperse polyhedral nickel nanoparticles composed of small nanocrystals have been successfully synthesized by a facile poly(N-vinyl-2-pyrrolidone) (PVP) mediated solution reduction process with hydrazine hydrate as the reducing agent. The phase structure, morphology and magnetic properties of the as-prepared products were extensively characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and vibrating sample magnetometer (VSM). XRD pattern indicated that the as-synthesized products were nickel with well-crystallized face-centered cubic structure. SEM and TEM observations showed that the polyhedral nanoparticles consist of nanocrystals with size around 2 nm. The formation of these polyhedral nanoparticles is attributed to the oriented aggregation of nickel nanocrystals around a polymer-Ni2+ complex framework structure. The magnetic property investigation shows that the polyhedral nickel nanoparticles exhibit a ferromagnetic behavior and possess a higher coercive field value than that of the bulk nickel.

Graphical abstract: Controllable synthesis of monodisperse polyhedral nickel nanocrystals

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Publication details

The article was received on 16 Jul 2011, accepted on 12 Sep 2011 and first published on 27 Oct 2011


Article type: Paper
DOI: 10.1039/C1CE05899A
Citation: CrystEngComm, 2012,14, 405-410
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    Controllable synthesis of monodisperse polyhedral nickel nanocrystals

    H. Song, X. Jia, X. Yang, H. Tang, Y. Li and Y. Su, CrystEngComm, 2012, 14, 405
    DOI: 10.1039/C1CE05899A

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