Microwave-assisted synthesis of icosahedral nickel nanocrystals
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Accepted version
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.
Journal Title
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.
Description
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
Copyright
© The Royal Society of Chemistry 2011