Method to control the sizes of the core-shell nanoparticles
US11376664B2 · kind B2 · utility
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Key dates
| Filing date | Jun 30, 2020 |
| Grant date | Jul 5, 2022 |
| Priority date | — |
| Expiry date | Aug 8, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present disclosure is related to a method to control sizes of core-shell nanoparticles comprising the steps of: manufacturing slurry by irradiating ultrasonic waves to a dispersion solution containing a reducing solvent, a carbon support, a transition metal precursor and a precious metal precursor; manufacturing a solid by filtering the manufactured slurry, followed by washing and drying; and manufacturing a nanoparticle of a transition metal core and a platinum shell by heat-treating the dried solid at a temperature of 450 to 900° C. and a pressure of 1 to 90 bar for 0.5 to 10 hours under N2 atmosphere.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.