Titanium dioxide / sulfonated graphene oxide / Ag nanoparticle composite membrane and preparation and application thereof
US10625214B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 27, 2018 |
| Grant date | Apr 21, 2020 |
| Priority date | — |
| Expiry date | Jan 3, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C5/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Titanium dioxide/sulfonated graphene oxide/silver nanoparticle composite membrane and its preparation method and application are disclosed. Mixing graphene oxide, sodium chloroethanesulfonate, and sodium hydroxide uniformly in the water, and then adding concentrated nitric acid to obtain sulfonated graphene oxide; mixing the aqueous solution of said sulfonated graphene oxide with the aqueous solution of silver nitrate, stirring in the dark, then adding ascorbic acid, and continuing to stir to obtain a silver nanoparticle/sulfonated graphene oxide composite material; dispersing said silver nanoparticle/sulfonated graphene oxide composite material in water, and then deposited on said titanium dioxide nanorods arrays by vacuum deposition, and vacuum dried to obtain titanium dioxide/sulfonated graphene oxide/silver nanoparticle composite membrane. The membrane possessed photocatalytic effect under UV light and special wettability: super-hydrophobic oil under water/super-hydrophobic under oil, which could in situ separation and degradation of oil/water emulsion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.