Photocatalytic composition comprising metallic particles and two semiconductors, one of which is composed of cerium oxide
US10682630B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 6, 2015 |
| Grant date | Jun 16, 2020 |
| Priority date | — |
| Expiry date | Jan 22, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B2203/1211
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to a composition that contains a first semiconductor SC1, particles that comprise one or more element(s) M in the metal state selected from among an element of groups IVB, VB, VIB, VIIB, VIIIB, IB, IIB, IIIA, IVA and VA of the periodic table, and a second semiconductor SC2 that comprises cerium oxide, with said first semiconductor SC1 being in direct contact with said particles that comprise one or more element(s) M in the metal state, with said particles being in direct contact with said second semiconductor SC2 that comprises cerium oxide in such a way that the second semiconductor SC2 covers at least 50% of the surfaces of the particles that comprise one or more element(s) M in the metal state. The invention also relates to its preparation method as well as its application of photocatalysis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.