Bismuth oxide/bismuth subcarbonate/bismuth molybdate composite photocatalyst and preparation method thereof
US11358125B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2020 |
| Grant date | Jun 14, 2022 |
| Priority date | — |
| Expiry date | Oct 9, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2305/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention discloses a bismuth oxide (Bi2O3)/bismuth subcarbonate ((BiO)2CO3)/bismuth molybdate (Bi2MoO6) composite photocatalyst, including a Bi2MoO6 photocatalyst, where Bi2O3 and (BiO)2CO3 nanosheets are introduced to a surface of the Bi2MoO6 through addition of Na2CO3 and roasting. The present invention also discloses a preparation method of the Bi2O3/(BiO)2CO3/Bi2MoO6 composite photocatalyst which is specifically implemented by the following steps: step 1: preparing a Bi2MoO6 photocatalyst; step 2: introducing Bi2O3 and (BiO)2CO3 nanosheets to a surface of the Bi2MoO6 photocatalyst obtained in step 1 through addition of Na2CO3 and roasting to obtain the Bi2O3/(BiO)2CO3/Bi2MoO6 composite photocatalyst. The photocatalyst of the present invention has no agglomeration, a wide responsive range of visible light, a significantly improved catalytic activity compared with a Bi2MoO6 alone, and excellent reusability. Moreover, the preparation method is simple with mild conditions, desired controllability and convenient operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.