About Photocatalysis Oxidation (TiO2)

Research Studies

Photocatalytic oxidation provides another way to destroy bacteria and neutralize chemicals and odors.

How Photocatalytic Oxidation (TiO2) Works

Photocatalytic oxidation is achieved when you combine UV rays with a TiO2-coated filter. TiO2 refers to Titanium Oxide. This process creates hydroxyl radicals and super-oxide ions, which are highly reactive electrons.

These highly reactive electrons aggressively combine with other elements in the air, such as bacteria and VOCs. VOC is an acronym for Volatile Organic Compounds, which include harmful pollutants such as formaldehyde, ammonia and many other common contaminates released by building materials and household cleaners generally found in the home.

Once bound together, the chemical reaction takes place between the super-charged ion and the pollutant, effectively "oxidizing" (or burning) the pollutant. This breaks the pollutant down into harmless carbon dioxide and water molecules, making the air more purified.

Photocatalytic Oxidation (TiO2) Studies

  • Chemistry scientists from the University of Colorado and the National Renewable Energy Laboratory in Colorado conducted an experiment testing the effectiveness of photocatalytic oxidation against harmful VOCs (volatile organic compounds such as formaldehyde and other known carcinogens). They found that destruction of these contaminates was nearly 100%.

  • Scientists working on behalf of the U.S. Department of Energy found that photocatalytic oxidation air purification may be beneficial for the large-scale treatment of air in occupied buildings, while conserving energy costs. This is due to the fact that this technology destroyed VOC chemicals at a significant rate, even at high air flow rates. Their study indicated that photocatalytic oxidation could provide as much VOC removal by itself as compared to the expensive process of introducing outdoor air into the indoor environment, drastically reducing the need to channel outdoor air inside.

  • In another study commissioned by the U.S. Department of Energy, scientists found that photocatalytic oxidation converted more than 95% of harmful VOC chemicals to harmless carbon dioxide and water molecules.

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