Microwave-assisted synthesis of icosahedral nickel nanocrystals
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Date
2011-01-04
Authors
Donegan, Keith P.
Godsell, Jeffrey F.
Tobin, Joseph M.
O'Byrne, Justin P.
Otway, David J.
Morris, Michael A.
Roy, Saibal
Holmes, Justin D.
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Journal ISSN
Volume Title
Publisher
Royal Society of Chemistry (RSC)
Published Version
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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Keywords
Nickel nanocrystals , Nanocrystals , Irradiation , ferromagnetism , Magnetic nanoparticles , Microwave irradiation , Ethylene glycol , Catalysis , High-density data storage , Data storage , Microprocessor
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
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© The Royal Society of Chemistry 2011