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Issue 7, 2011
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Nickel flower-like nanostructures composed of nanoplates: one-pot synthesis, stepwise growth mechanism and enhanced ferromagnetic properties

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Abstract

Nickel flower-like nanostructures composed of intercrossed nanoplates have been fabricated through a one-pot polyol reduction process without any surfactant or external magnetic field, where free Ni2+ ions slowly released from a solid intermediate phase are reduced by 1,2-propanediol under basic conditions. The morphology and size of the products can be kinetically tailored by properly tuning the synthetic parameters, including the concentrations of NiCl2 and NaOH. A small amount of water in the 1,2-propanediol solution is inevitable for the growth of such flowery nanostructures. A stepwise growth mechanism is rationally proposed including the initial formation of nanospheres aggregated from nuclei and the subsequent site-specific oriented growth of nanoplates with basal planes of {111} facets at the quasi-equilibrium growth state. Such a flower-like nickel nanostructure shows a great enhancement of the ferromagnetic properties ascribed to the highly anisotropic shape of plate-like subunits. This work provides a facile strategy to fabricate stable nickel 3D nanostructures composed of nanoplates without losing their intrinsic 2D characteristics.

Graphical abstract: Nickel flower-like nanostructures composed of nanoplates: one-pot synthesis, stepwise growth mechanism and enhanced ferromagnetic properties

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Publication details

The article was received on 02 Nov 2010, accepted on 06 Jan 2011 and first published on 14 Feb 2011


Article type: Paper
DOI: 10.1039/C0CE00805B
Citation: CrystEngComm, 2011,13, 2636-2643
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    Nickel flower-like nanostructures composed of nanoplates: one-pot synthesis, stepwise growth mechanism and enhanced ferromagnetic properties

    J. Guan, L. Liu, L. Xu, Z. Sun and Y. Zhang, CrystEngComm, 2011, 13, 2636
    DOI: 10.1039/C0CE00805B

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