Магнітні рідини та нанокомпозити на основі Fe3O4
The stabilization of magnetite particles by using of sodium oleate was carried out. The magnetic fluid was fabricated and its magnetic properties were studied. A technique to obtain magnetically operated Fe3O4/SiO2 nanocomposites with high specific surface area (up to 400 m2/g) by using the magnetic...
Збережено в:
| Дата: | 2011 |
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| Автори: | , , , , , |
| Формат: | Стаття |
| Мова: | Російська |
| Опубліковано: |
Chuiko Institute of Surface Chemistry National Academy of Sciences of Ukraine
2011
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| Онлайн доступ: | https://surfacezbir.com.ua/index.php/surface/article/view/455 |
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| Назва журналу: | Surface |
| Завантажити файл: |  |
Репозитарії
Surface| Резюме: | The stabilization of magnetite particles by using of sodium oleate was carried out. The magnetic fluid was fabricated and its magnetic properties were studied. A technique to obtain magnetically operated Fe3O4/SiO2 nanocomposites with high specific surface area (up to 400 m2/g) by using the magnetic fluid was developed. The structure and magnetic properties of these nanocomposites were studied. It was shown that the use of sodium oleate as an additive in the synthesis of the composites resulted in a significant increase in their surface compared with unmodified magnetite, and as well as with similar designs when sodium oleate was not used. For the composite containing 0.5 g of SiO2 per 1 g of magnetite, the specific saturation magnetization was 3.66 mT∙m3/kg and Hc = 6.2 kA/m. |
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