Our TiO2 Application Process
Titanium Dioxide Coatings® solutions are applied by spray. One application tightly bonds to nearly all materials and air-dries to form an invisible, highly photoactive, nano thin mineral film. One application will actively and continuously provide self-cleaning and odor eliminating benefits for months and even years.
The History of UV-PCO
The discovery of UV-PCO by Professors Honda and Fujishima over thirty years
ago has resulted in 6,000 patents, 12 conferences on the use of photocatalytic
TiO2 to treat air and water pollution, and nearly $700 million of economic activity in
Asia and Europe with products such as self-cleaning windows, smog eating
cement and photocatalytic air purifiers. Despite all this activity, the technology is
still in its infancy and has yet to take hold here in America. Titanium Dioxide Coatings's
significant advantage in photocatalytic performance, application and value
will allow this green, clean and self-cleaning technology to flourish in the
There have been three generations of UV-PCO technology:
Generation 1 - Dry Process UV-PCO
99.9% of all the patents, academic research and commercial activity related to UV-PCO starts with dry powders of anatase TiO2. Dry powders of anatase TiO2 are sintered into glass, mixed into cement or glued on to substrates with solvent based adhesives or water glass in high heat, factory based processes. The limitations of dry process UV-PCO include: weak performance when the powders of anatase TiO2 agglomerate or clump; inefficiency when the nanoparticles are not on the surface exposed to light or the targeted organic matter and general restriction to high heat, infactory application.
Generation 2 - Wet Process UV-PCO
In 1995, two scientists from Saga Prefecture ("Saga"), Japan developed a method of creating nanoparticles of anatase TiO2 fully suspended in water by starting with liquids and never touching powders. The advantages of this wet process method of creating aqueous solutions of photocatalytic TiO2 that are 99%-98% water include:
- Smaller, more powerful nanoparticles of anatase TiO2 - smaller is better in the world of UV-PCO. Smaller particles mean more exposed surface area and more exposed surface area means more photocatalytic activity.
- Application to surface only of fully suspended anatase TiO2 - water based UV-PCO means you can coat surfaces in and out of the factory with maximum efficiency and in an environmentally friendly manner.
Generation 3 - Titanium Dioxide Coatings - Advanced Wet Process UV-PCO
Over the last five years, Titanium Dioxide Coatings has improved on Generation 2 technology by developing:
- Smoother and clearer coatings - by adding critical wetting agents.
- Stronger, more economic photocatalysis - by developing more efficient production methods.
- Greater application versatility and speed - by developing spray equipment systems perfectly suited to the application of Titanium Dioxide Coatings.