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Synthesis of naked plasmonic/magnetic Au/Fe 3 O 4 nanostructures by plasmon-driven anti-replacement reaction
In this study, naked Au(core)/Fe O (shell) hybrid nanostructures are rapidly synthesized by a plasmon-driven anti-replacement reaction. The Au nanoparticles are prepared by pulsed laser ablation in water. The mixture of Au nanoparticles and FeCl solution is irradiated under a laser with a specific w...
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Published in: | Nanotechnology 2019-02, Vol.30 (6), p.065605 |
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Main Authors: | , , |
Format: | Article |
Language: | English |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | In this study, naked Au(core)/Fe
O
(shell) hybrid nanostructures are rapidly synthesized by a plasmon-driven anti-replacement reaction. The Au nanoparticles are prepared by pulsed laser ablation in water. The mixture of Au nanoparticles and FeCl
solution is irradiated under a laser with a specific wavelength. The Fe
ions are reduced to low valence species by the 'hot electrons' in Au, and form the Fe
O
spindles on the surface of Au nanoparticles. The Au nanoparticles are synchronously oxidized to Au
and Au
ions by the 'hot holes'. The saturation magnetization and coercivity of Fe
O
spindles are 48.7 emu g
and 218.9 Oe, respectively. Our work provides a facile route to obtain the naked Au/Fe
O
plasmonic/magnetic nanostructures. |
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ISSN: | 0957-4484 1361-6528 |
DOI: | 10.1088/1361-6528/aaf17c |