How It Works

What is Photocatalysis?

Photocatalysis describes a chemical reaction, which is accelerated by light.
A photocatalyst is a substance that causes this reaction, without being involved in it. A photocatalyst coating is a coating that contains photocatalysts as ingredients.

To explain it another way, it is very similar to Photosynthesis where light energy is transformed to a chemical energy. Photosynthesis is the process by which plants generate carbohydrates and oxygen from carbon dioxide, water, and light energy while photocatalyst is a substance that absorbs light and, in doing so, catalyses a reaction.

Process of converting energy (sunlight) into Oxygen (O2) and Sugar. Photosynthesis requires Carbon Dioxide (CO2 + Water (H20).

Light energised titanium dioxide attracts water and oxygen in the air and splits this to form two powerful oxidising species (hydroxyl radical OH-  and Oxygen Hole O2-).  Super hydrohilicity – water is very strongly attracted to the titanium dioxide surface where it is split by the energised titanium dioxide, this results in a vastly reduced contact angle of water as it hugs the surface, not allowing droplets to form.

Photocatalysis is the complete cycle of converting light energy (from the sun or an electrical light source) into a chemical energy that’s transferred to water vapour to produce active oxygen species at the surface.

A photocatalyst coating is energised by the presence of light. The excitation of the photocatalyst causes a number of reactions at the surface of the coating.

This light stimulation of the Photocatalyst transforms the coated surface, creating air purification and is self-cleaning.

Photocatalyst Coatings are transparent and designed for a wide variety of everyday surfaces. The active ingredient, titanium dioxide doesn’t dissolve in water and is a safe substance found in many types of cosmetics and food additives.

Put simply, when Nano Titanium Dioxide Coating (ecotio2®) is exposed to light it decomposes smog, pollution and stain causing substances into harmless by-products.

The benefits of Photocatalyst Coatings include:
  • Self Cleaning
  • Maintenance saving
  • Smog eating/air purifying
  • Protective
  • Wide range of uses
  • Safe and reliable
  • Meet your sustainability targets
  • Long lasting
  • Reduces cleaning
  • Decomposes dirt and pollutants that come in contact with surface

Do you want to know how Photocatalyst Coatings can be used on your next project?

Get in touch with the friendly team at Photocatalyst Coatings on 1300 326 846, or fill in our online form.