Segregation induced core-shell structure
US11628427B2 · kind B2 · utility
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9References
14Claims
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Key dates
| Filing date | Jan 28, 2021 |
| Grant date | Apr 18, 2023 |
| Priority date | — |
| Expiry date | Feb 16, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J37/343
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for synthesis of PtNi high surface area core/shell particles. The processing including formation of PtNi nanoparticles, exposure of the PtNi nanoparticles to oxygen to form a nickel oxide coating on the nanoparticles at the same time the segregation of Ni to surface induces a Pt-skin with PtNi core structure, removal of the nickel oxide coating to form PtNi core/Pt shell (or Pt-skin) structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.