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US 8,691,144 B2Granted
System and method for photocatalytic oxidation air filtration using a substrate with photocatalyst particles powder coated thereon
AssigneeGarfield Industries, Inc.
InventorsKirk Garfield, John Potter
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Abstract
The present invention relates to an air filtration system and a method for making a photocatalytic oxidation substrate by powder coating a photocatalyst onto a metal substrate.
Claims13
A method for applying a photocatalyst onto a substrate useful in a photocatalytic oxidation air filtration system comprising:
- a. mixing a substrate powder coated with a solvent-free and binary photocatalyst-resin mixture comprised of about 60% to 85% by weight of only titanium dioxide and about 15% to 40% by weight of polymer resin;
- b. electrically charging the binary photocatalyst-resin mixture;
- c. spraying the binary photocatalyst-resin mixture onto the substrate to form a metal oxide powder-coated substrate;
- and
- d. heating the binary photocatalyst powder-coated substrate for a time and at a temperature sufficient to cure the photocatalyst mixture on the substrate.
2 more elements
A method for filtering contaminants, comprising:
- providing a particulate filter operably coupled to a substrate;
- electrically charging a binary photocatalyst-resin mixture is electrically charged and sprayed onto the substrate comprising a substrate powder coated with a solvent-free and heat-cured binary photocatalyst-resin mixture comprised of about 60% to 85% by weight of only titanium dioxide and about 15% to 40% by weight of polymer resin, and the binary photocatalyst-resin mixture is cured by heating onto the substrate to form a photocatalyst powder coated-substrate;
- and
- irradiating UV light on the photocatalyst powder-coated substrate to remove contaminants from the surface of the substrate once the contaminants bind to the photocatalyst powder-coated substrate.
1 more element
Dependencies are inferred from the claim text.