Microwave-assisted synthesis of icosahedral nickel nanocrystals

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Microwave-assisted synthesis of icosahedral nickel nanocrystals

Donegan, Keith P.; Godsell, Jeffrey F.; Tobin, Joseph M.; O'Byrne, Justin P.; Otway, David J.; Morris, Michael A.; Roy, Saibal; Holmes, Justin D.
Date: 2011-01-04
Copyright: © The Royal Society of Chemistry 2011
Related: http://pubs.rsc.org/en/content/articlelanding/2011/ce/c0ce00759e
Citation: Donegan, K. P., Godsell, J. F., Tobin, J. M., O'Byrne, J. P., Otway, D. J., Morris, M. A., Roy, S. and Holmes, J. D. (2011) 'Microwave-assisted synthesis of icosahedral nickel nanocrystals', CrystEngComm, 13(6), pp. 2023-2028. doi: 10.1039/C0CE00759E
Published Version: 10.1039/C0CE00759E

Abstract:

Nickel nanocrystals with icosahedral morphologies have been successfully synthesised using a microwave-assisted irradiation method. Nickel acetylacetonate was used as the metal precursor, while sodium formate and trioctylphosphine oxide were employed as the reducing agent and capping ligands, respectively. The nanocrystals, with a mean diameter of 237 ± 43 nm, exhibited enhanced ferromagnetic behaviour at room temperature compared to bulk nickel, with coercivities of up to 164 Oe and saturation magnetisation values of up to 46 emu g−1, due to their icosahedral morphologies.

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