Preparation of iron or iron oxide nanoparticles
US7985398B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 12, 2006 |
| Grant date | Jul 26, 2011 |
| Priority date | — |
| Expiry date | Sep 9, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2004/64
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present teachings are directed towards a thermolysis method of producing iron-containing nanoparticles by providing an iron-containing component, a colloid stabilizing component, and an amount of water. The iron-containing component, the colloid stabilizing component, and the amount of water form a mixture, which is then heated to a temperature sufficient to form iron-containing nanoparticles, which are then isolated from the mixture. Another method is also provided which involves a repetitive shell growth method of producing iron-containing nanoparticles by providing a first amount of an iron-containing component and a colloid stabilizing component; the iron-containing component and the colloid stabilizing component are then mixed and heated to a temperature sufficient to form iron-containing nanoparticles. The mixture is allowed to cool to room temperature, and an additional amount of iron-containing component is added to the mixture, which is then reheated to reaction temperature, and the process is repeated until the isolated iron-containing nanoparticles obtain the desired size.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.