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Issue 35, 2013
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Controllable synthesis of size-tunable h-nickel nanoparticles

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Abstract

Hexagonal close-packed Ni (h-Ni) nanoparticles were prepared on the nanoscale via a thermal decomposition approach using nickel acetate tetrahydrate as the precursor, oleylamine (OAm) as the ligand and noncoordinating octadecene as the solvent. Systematic analysis revealed that the generation of urchin-like particles, as well as their size evolution, strongly depended on the reactivity of the nickel ions, controlled mainly by the concentration of oleylamine. By altering the concentration of oleylamine, the diameters of the urchin-like NPs were tunable from 400 to 50 nm. Moreover, the as-prepared urchin-like particles possessed good structural stability, which could be kept over a long period of sonication without morphology variation. A step wise growth mechanism of the urchin-like structure is proposed. The influence of size on the magnetic properties of the h-Ni nanoparticles is also studied. Magnetic hysteresis measurements revealed that the hierarchical nickel nanostructures possess ferromagnetic behavior and the coercivity reaches its highest values when the particle size is approximately 200 nm.

Graphical abstract: Controllable synthesis of size-tunable h-nickel nanoparticles

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Publication details

The article was received on 03 May 2013, accepted on 26 Jun 2013 and first published on 26 Jun 2013


Article type: Communication
DOI: 10.1039/C3CE40769A
CrystEngComm, 2013,15, 6923-6927

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    Controllable synthesis of size-tunable h-nickel nanoparticles

    D. Zhang, X. Dou, H. Mao, X. Ma, S. Cai, X. Liu and Z. Tong, CrystEngComm, 2013, 15, 6923
    DOI: 10.1039/C3CE40769A

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