×

Tungsten oxide/titanium dioxide photocatalyst for improving indoor air quality

  • US 7,255,831 B2
  • Filed: 05/30/2003
  • Issued: 08/14/2007
  • Est. Priority Date: 05/30/2003
  • Status: Expired due to Fees
First Claim
Patent Images

1. An air purification system comprising:

  • a substrate;

    a metal oxide/titanium dioxide photocatalytic coating including a monolayer of tungsten oxide on titanium dioxide, the monolayer of tungsten oxide having a thickness no greater than one molecular unit, and said photocatalytic coating is applied on said substrate; and

    a light source to activate said tungsten oxide/titanium dioxide photocatalytic coating, and said tungsten oxide/titanium dioxide photocatalytic coating oxidizes contaminants in an air flow that are adsorbed onto said tungsten oxide/titanium dioxide photocatalytic coating when activated by said light source.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×