Abstract
Hydrothermal synthesis of Fe 3 O 4 (magnetite) particles was carried out using organic compounds as morphology control agents to obtain magnetite crystals with uncommon facets. It was established that the morphology of Fe 3 O 4 crystals obtained by hydrothermal treatment of an aqueous solution containing Fe 2+ and organic compounds depended on the organic compound used. The shape of the Fe 3 O 4 particles obtained when no additives were used was quasi-octahedral. In contrast, the addition of picolinic acid, citric acid or pyridine resulted in the formation of polyhedral crystals, indicating the presence of not only {111}, {100} and {110} facets but also high-index facets including at least {311} and {331}. When citric acid was used as an additive, octahedral crystals with {111} facets also appeared, and their size decreased as the amount of citric acid was increased. Thus, control of Fe 3 O 4 particle morphology was achieved by a simple hydrothermal treatment using additives.
| Original language | English |
|---|---|
| Pages (from-to) | 258-262 |
| Number of pages | 5 |
| Journal | Journal of Asian Ceramic Societies |
| Volume | 2 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2014 Sep |
Keywords
- High-index facets
- Hydrothermal method
- Magnetite
- Morphology control
ASJC Scopus subject areas
- Ceramics and Composites