System and method for air purification using an enhanced multi-functional coating based on in-situ photocatalytic oxidation and ozonation
US8529831B1 · kind B1 · utility
6Cited by
2References
16Claims
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Key dates
| Filing date | Dec 16, 2011 |
| Grant date | Sep 10, 2013 |
| Priority date | — |
| Expiry date | Dec 16, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24F8/98
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A system for air purification based on in-situ photocatalytic oxidation and ozonation includes a single multi-functional Ti02-based coating having photocatalytic activity for oxidation in the presence of a sufficient ozone supply and UV irradiation to synergistically oxidize gaseous pollutants at ambient conditions. Also disclosed is a method for removing gaseous pollutants using ozone and UV irradiation to simultaneously activate the photocatalytic oxidation in the presence of the Ti02-based coating to remove up to about 84% of the gaseous pollutants within 5 minutes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.