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Issue 15, 2014
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Shape-controlled synthesis of nanopyramids and nanoprisms of nickel sulfide (Ni3S4)

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Abstract

Two different nickel precursors (NiCl2 or Ni(CH3COCH2COCH3)2) in the presence of 1-dodecanethiol and a mixture of oleylamine and oleic acid were used for a one-pot colloidal synthesis to produce high purity Ni3S4 nanoparticles with controlled shapes in high yields and narrow size distributions. By simply changing the nickel precursors, the shape of Ni3S4 nanocrystals can be readily tuned from triangular nanoprisms to tetrahedra (nanopyramids). The produced nanocrystals were characterized by transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDS), X-ray powder diffraction, selected area electron diffraction, ultraviolet-visible spectroscopy and superconducting quantum interference device (SQUID). TEM tomography (3D-TEM) was employed to determine details of the particle shapes. SQUID measurements confirmed that particle shape and domain size could dramatically impact their magnetic properties, where tetrahedral nanopyramids of Ni3S4 nanoparticles showed ferromagnetic properties while the Ni3S4 nanoprisms showed random antiferromagnetic interactions between magnetic centers.

Graphical abstract: Shape-controlled synthesis of nanopyramids and nanoprisms of nickel sulfide (Ni3S4)

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Publication details

The article was received on 04 Mar 2014, accepted on 12 May 2014 and first published on 19 May 2014


Article type: Paper
DOI: 10.1039/C4NR01196A
Author version available: Download Author version (PDF)
Citation: Nanoscale, 2014,6, 8935-8942
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    Shape-controlled synthesis of nanopyramids and nanoprisms of nickel sulfide (Ni3S4)

    Q. Liu, A. Díaz, A. Prosvirin, Z. Luo and J. D. Batteas, Nanoscale, 2014, 6, 8935
    DOI: 10.1039/C4NR01196A

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