期刊
CRYSTAL GROWTH & DESIGN
卷 9, 期 6, 页码 2685-2689出版社
AMER CHEMICAL SOC
DOI: 10.1021/cg8013199
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资金
- Australian Research Council
- University of Western Australia
- University of Malaysia Sarawak
- University, State and Federal Government
Superparamagnetic magnetite nanoparticles are coated with homogeneous gold and silver shells using a simple aqueous based seed mediated method at room temperature with dopamine as a surfactant. Nanoparticles of ALL in the range 2-3 nm are attached to an-Line functionalized Fe3O4 nanoparticles, acting as seed for the growth of ultrathin Au or Ag shells. The monodispersed core-shell nanoparticles Fe3O4@Au and Fe3O4@Ag have a particle size range of 10-13 nm with a shell thickness of approximately 2-3 nm. They are magnetically purified and are superparamagnetic at 300 K with saturated magnetization values of 41 and 35 emu g(-1), respectively.
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