Abstract
We report a two-step chemical solution process for synthesis of FePt/Au core/shell nanoparticles. First, FePt nanoparticles were synthesized using a typical polyol process. The as-synthesized FePt nanoparticles were then used as seed materials and were coated with gold shells by reduction of the gold precursors. The coated nanoparticles have been characterized using various structural and morphological measurements to confirm the FePt/Au core/shell morphology. The as-synthesized FePt/Au nanoparticles were found to be superparamagnetic and became ferromagnetic after annealing at 400 °C. The surface modification of FePt/Au core/ shell nanoparticles from hydrophobic to hydrophilic was achieved through ligand exchange to make them water dispersible for potential biomedical applications.
Original language | English (US) |
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Pages (from-to) | 13088-13091 |
Number of pages | 4 |
Journal | Journal of Physical Chemistry C |
Volume | 113 |
Issue number | 30 |
DOIs | |
State | Published - Jul 30 2009 |
Externally published | Yes |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- General Energy
- Physical and Theoretical Chemistry
- Surfaces, Coatings and Films