TiO2 Shield - Self Cleaning Photocatalytic Coatings
Photocatalytic Coatings are water-based coatings applied by spray gun, roller or brush. The coating solution is like paint; however, it contains nano-sized particles of titanium dioxide (TiO2). The nano-sized particles (10 nanometers or 10 billionths of a meter) provide tremendous surface area for photocatalytic reactions. The nano sized TiO2 particles catalyze chemical reactions when exposed to light. Because TiO2 is a catalyst, is not consumed in the reaction. TiO2 is such a powerful photocatalyst, it will cause the destruction of any organic pollutant that contacts the surface. This action results in a remarkable surface which is self-cleaning in the presence of light.
Problems With Outdoor Structures
• Dust and dirt accumulation
– Floating dust generated by combustion of fossil fuel burning engines.
• Biological Growth
– Moss, lichen, algae, molds, etc. These are hardly species nutritious matter found everywhere in nature when moisture and heat Occur.
A vicious circle of deterioration with biological growth
 Rain on biological growth, does not dry out as fast as on a clean surface, the risk of frost damage increases. When frost damage occurs, the surface will be larger with horizontal parts, where water and new biological growth have even better conditions.
TiOSHIELD Protective Coating for Self-Cleaning Buildings
1.The only known coating technology to create a self-cleaning surface without any maintenance
2.Antistatic: The dust particle in no longer attracted to the surface.
3.Oxidation Strength: The strong oxidizing effect will decompose hydrocarbon and any organic growth.
4.Hydrophilic Surface: Any dust or contaminant can be easily washed off by rainfall.
Building Exterior Coating Example 1
Photocatalyst Treatment applied in February, 1999 till NOW! Without any maintenance! That is 10 years!!!
Building Exterior Coating Example 2
The image below shows a building exterior wall. It is very obvious which side of the wall has been treated with Tioshield. The left side of the wall (treated in August, 1999) is “self-cleaning” and does not collect grime which has discolored the untreated right side of the wall.
Treating the surface with the coating does not change the appearance of the surface; however, the self-cleaning phenomenon will result in the surface staying clean for 3 years or more.
Building Exterior Coating Example 3
Mold Decomposition Example
Building exterior suffers from unsightly damage of mold infestation due to high humidity. The strong oxidation effect of photocatalyst effectively removes mold and protects the surface integrity.
1.Clean substrate
2.Apply coating
The Challenge: Keeping Building Exteriors Clean
Pollutants in the air cause building exteriors to collect grime and oils. This fine layer of oil attracts dust and other particulates. The resulting grime, oils, dust and soot collect and result in the discoloration and soiling often seen on buildings in every city. The unsightly dirt and grime accumulate and eventually the building has to be cleaned by pressure washing, sandblasting and/or painting.
 Stains created by dirty water draining off the bars of the balcony
Soot, dirt and oils caused this unsightly discoloring on the window
Streaking on the concrete wall caused by dirty rainwater runoff
Left unclean, buildings can lose their architectural appeal and attractiveness to residents, tenants and passersby. The ideal solution is to prevent building exterior from becoming dirty in the first place by applying a photocatalytic coating, Tioshield, to the surface.
TiO2 Photocatalyst Self-Cleaning Test Result Non Coated Coated
Treated walls do not get dirty or discolor, because of the photocatalytic self-cleaning cycle.
Description: UV Protection Example 1
Photocatalyst TiO2 coating can protect the color integrity of the surface by acting as UV absorbent. The exposed surface is no longer affected by the intense UV of the sunlight.
Before Photocatalyst Treatment:
After Photocatalyst Treatment: (After 150 Hours of exposure to UV)
PHOTOCATALYST TIOSHIELD DECOMPOSITION SIMULATION OF ORGANIC COMPOUND- RED DYE
Stain Decomposition Test - Test Procedure
• Inside of blue dots line is coated with TiO2.
• The red ink is diluted one-twentieth with water
• A UV light with intensity of 1mW/cm2 was used for this test
 This simple decomposition simulation experiment is designed to demonstrate how photocatalyst film reacts with the light resource in order to oxidize organic matter (micron size particles such as bacterial, viral, algal, fungal, oil contents, odor molecular, VOC, etc.) by breaking down their chemical chain into inorganic gas of carbon dioxide and water. Once is applied, it will continuously oxidize the foreign organic substances without losing the photocatalytic effect. Since Photocatalyst TiO2 is only acting as a semi-conductor catalyst, it is not consumed or depleted during the oxidation process, therefore, completing a perpetual, long lasting oxidation cycle.
Tioshield benefits your property:
- Lowers overall maintenance costs
- Protects the aesthetics of the property
- Resistant to mildew, algae, mold or any organic growth
- Increases the life of treated material
Tioshield can be applied on:
- Ceramic Tile
- Glass
- Brick & Masonry
- Concrete
- Metal siding & cladding
- Stucco
- Painted Surfaces
- Vinyl siding
- Acrylic and Polycarbonate material
- Industrial Fabric and Awning
Self Cleaning Buildings
- For exterior self-cleaning applications
- For exterior surface mold & moss protection and removal
- Keep the building in new and clean view
- Protect the surface from dust, acid rain and air pollutant damage
- Purify the air pollutant near and on the surface (e.g. car exhausts NOx, Formaldehyde, Benzene, VOCs)
- Restrain the dust electrostatic adsorption
- Reduce the energy consumption for cooling the building in summer
- Restrain mildew or alga growing
- Make the surface without water stain after raining
- Kill the bacteria and virus on the surface and in the air near the coated building
- Absorb the UV from sun and then protect the surface from UV damage
- Decompose the organic pollutant on the surface (e.g. oil, graffiti)
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