Dung, NT;
Long, NV;
Tam, LTT;
Nam, PH;
Tung, LD;
Phuc, NX;
Lu, LT;
(2017)
High magnetisation, monodisperse and water-dispersible CoFe@Pt core/shell nanoparticles.
Nanoscale
, 9
(26)
pp. 8952-8961.
10.1039/C6NR09325F.
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Abstract
High magnetisation and monodisperse CoFe alloy nanoparticles are desired for a wide range of biomedical applications. However, these CoFe nanoparticles are prone to oxidation, resulting in the deterioration of their magnetic properties. In the current work, CoFe alloy nanoparticles were prepared by thermal decomposition of cobalt and iron carbonyls in organic solvents at high temperatures. Using a seeded growth method, we successfully synthesised chemically stable CoFe@Pt core/shell nanostructures. The obtained core/shell nanoparticles have high saturation magnetisation up to 135 emu g−1. The magnetisation value of the core/shell nanoparticles remains 93 emu g−1 after being exposed to air for 12 weeks. Hydrophobic CoFe@Pt nanoparticles were rendered water-dispersible by encapsulating with poly(maleic anhydride-alt-1-octadecene) (PMAO). These nanoparticles were stable in water for at least 3 months and in a wide range of pH from 2 to 11.
| Type: | Article |
|---|---|
| Title: | High magnetisation, monodisperse and water-dispersible CoFe@Pt core/shell nanoparticles |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1039/C6NR09325F |
| Publisher version: | http://dx.doi.org/10.1039/C6NR09325F |
| Language: | English |
| Additional information: | This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1566853 |
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