Synthesis of PtCo nanoparticles
US8110021B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 26, 2009 |
| Grant date | Feb 7, 2012 |
| Priority date | — |
| Expiry date | Apr 16, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/896
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Synthesis of nanoparticles with particle size control is provided by the method of using two different metal-containing precursors, a capping component, an optional reducing agent, and then contacting the two precursors with the capping component to form a reaction solution, which is heated to produce first and second metals-containing nanoparticles. By controlling the ratio of the concentration of the capping component to the total concentration of the two metal-containing precursors, the nanoparticles can have diameters ranging between about 1 nm to about 15 nm. A decrease in the concentration of the capping component typically increases the size of the nanoparticles. Preferred compositions include Pt and Co-containing alloy nanoparticles. Controlled synthesis of larger, about 6 nm to about 12 nm, sized nanoparticles can be achieved in a solvent-free reaction process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.