Anti-haze anti-harmful gas air filter membrane as well as preparation method and application thereof
US11338249B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 14, 2017 |
| Grant date | May 24, 2022 |
| Priority date | — |
| Expiry date | Aug 16, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J23/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The disclosure discloses an anti-haze anti-harmful gas air filter membrane as well as a preparation method and application thereof. The air filter membrane comprises a nano fiber membrane made of nano fibers and having a two-dimensional or three-dimensional network structure. The nano fiber membrane can be a high-molecular polymer nano fiber membrane prepared by utilizing an electrostatic spinning process, and can also be doped with an organic or inorganic additive capable of adsorbing and absorbing harmful gases, such as VOCs, NOx, SOx and NH3, in the air and/or a photocatalyst capable of degrading these harmful gases in a photocatalysis manner, or the like. The anti-haze anti-harmful gas air filter membrane disclosed by the disclosure can efficiently filter PM2.5 and PM10 particulate pollutants and the like in the air and simultaneously can efficiently identify and clear multiple harmful gases in the air. The anti-haze anti-harmful gas air filter membrane has a wide application prospect in the field of air purification, for example, can be applied to air purification devices, such as screen windows, gauze masks and filter screens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.