초록

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.

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1. An air filtration system comprising: a. a particulate filter operably coupled to a substrate;b. 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

1. An air filtration system comprising: a. a particulate filter operably coupled to a substrate;b. 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, wherein the binary photocatalyst-resin mixture is electrically charged and sprayed onto the substrate, and the binary photocatalyst-resin mixture is cured by heating onto the substrate to form a photocatalyst powder coated-substrate; andc. a UV light source for irradiating UV light on the photocatalyst powder-coated substrate to remove contaminants from the surface of the photocatalyst powder coated-substrate once the contaminants bind to the photocatalyst powder coated-substrate. 2. The air filtration system of claim 1, wherein the substrate comprises aluminum. 3. The air filtration system of claim 2, wherein the substrate is woven. 4. The air filtration system of claim 1, wherein the titanium dioxide has an average particle size of about 134 μm on the substrate. 5. The air filtration system of claim 1, wherein the polymer resin further comprises a terephthalate ester-based resin. 6. The air filtration system of claim 1, further comprising a control panel that comprises an infrared motion detector and an air quality sensor. 7. The air filtration system of claim 1, wherein the control panel further comprises a negative ion generator. 8. An air filtration system comprising: a. an aluminum substrate powder coated with a solvent-free heat-cured binary photocatalyst-resin mixture consisting essentially of only titanium dioxide and a terephthalate ester-based resin;b. wherein the binary photocatalyst-resin mixture is electrically charged and sprayed onto a substrate, and the binary photocatalyst-resin mixture is cured by heating onto the aluminum substrate to form a photocatalyst powder coated-substrate; andc. a UV light source for irradiating UV light on the photocatalyst powder coated-substrate to remove contaminants from the surface of the photocatalyst powder coated-substrate once the contaminants react with the photocatalyst powder coated-substrate. 9. The air filtration system of claim 8, further comprising a motor fan for propelling airflow. 10. The air filtration system of claim 9, further comprising at least one reflector positioned adjacent the at least one UV light source for reflecting UV light toward the substrate. 11. The air filtration system of claim 10, further comprising a particulate filter. 12. The air filtration system of claim 11, wherein the photocatalyst-resin mixture comprises about 60% to 85% by weight of titanium dioxide and about 15% to 40% by weight of terephthalate ester-based resin. 13. An air filtration system comprising: a. an aluminum substrate powder coated with a solvent-free heat-cured binary photocatalyst-resin mixture consisting essentially of only titanium dioxide and a terephthalate ester-based resin, wherein the binary photocatalyst-resin mixture is electrically charged and sprayed onto the aluminum substrate, and the binary photocatalyst-resin mixture is cured by heating onto the aluminum substrate to form a photocatalyst powder coated-substrate;b. at least one UV light source for irradiating UV light on the photocatalyst powder coated-substrate; andc. at least one reflector positioned adjacent the at least one UV light source for reflecting UV light toward the photocatalyst powder coated-substrate to remove contaminants from the surface of the photocatalyst powder coated-substrate once the contaminants bind to the surface of the photocatalyst powder coated-substrate. 14. The air filtration system of claim 13, further including a pleated particulate filter. 15. The air filtration system of claim 13, wherein the substrate has a structure selected from the group consisting of: a honeycomb, fins, a mesh, a fibrous structure, or a filamentous structure. 16. The air filtration system of claim 13, wherein the titanium dioxide has an average particle size of about 134 μm on the substrate. 17. The air filtration system of claim 16, wherein the photocatalyst-resin mixture consists essentially of about 60% to 85% by weight of titanium dioxide and about 15% to 40% by weight of terephthalate ester-based resin.