Abstract
In this paper, we suggest the synthetic routes to prepare octahedrally crystallized hematite particles. One of these routes allows stabilizing pseudomorphic nanoparticles. Calcination of iron (III) oleate at 300 °C in air gives triangular shaped magnetite particles. At higher temperatures (400–500 °C), the octahedrons, about 1 μm in size, with predominant hematite phase are obtained. Calcination of the same precursor in the presence of polymeric beads results in a decrease of particle size up to 20 nm while preserving the magnetic phase admixture. To achieve effective stabilization, swelling of polystyrene beads during the iron (III) oleate impregnation is required.
Original language | English |
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Article number | 121130 |
Number of pages | 6 |
Journal | Journal of Solid State Chemistry |
Volume | 282 |
DOIs | |
Publication status | Published - Feb 2020 |
Keywords
- Hematite
- Pseudomorphism
- Size stabilization
- NANOPARTICLES
- ALPHA-FE2O3
- GROWTH
- MAGNETITE
- CRYSTAL