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FAQ

1. What is Titanium dioxide?
2. How does Titanium dioxide work?
3. What accomplishes a Titanium dioxide-coating?
4. How thick is a coating with Titanium dioxide?
5. Does the TiO2-coating affect the coated surface?
6. Is the TiO2-coating consumed by-and-by?
7. Does the TiO2-coating stain the surface?
8. What kind of pollutants decomposes the TiO2-coating in the air?
9. What kind of pollutants decomposes the TiO2-coating in water?
10. Does a TiO2-coating change the hardness and the feel of the surface?
11. Can a TiO2-coating be removed?
12. How does the air cleaning work?
13. How does the water cleaning work?
14. How does the odour elimination work?
15. How does the antibacterial effect of TiO2 work?
16. Can I apply a TiO2-coating by myself?
17. Do I need special precleaners?
18. Is there scientific evidence for the efficiency?
19. What happens if the coated surface is damaged?
20. What is the difference between this „active“ titanium dioxide and the titanium dioxide from wallpaint?
21. What brings about the addition of silver ions to titanium dioxide?
22. Does the coating work with sparse sunlight indoors?
23. When do we speak of amorphous titanium dioxide?
24. How should titanium dioxide be stored?
25. What has to be observed if glass is cleaned before the coating with tita-nium dioxide?
26. Can titanium dioxide be applied with a brush or a paint roller?
27. How much titanium dioxide solution is required for one square meter?
28. How can the formation of drops be avoided during the coating process?
29. How long dries a titanium dioxide coating?
30. What causes a whitish film on the surface after the application of titani-um dioxide?
31. How durable is the titanium dioxide film



What is Titanium dioxide?
Titanium dioxide (TiO2) is an often found mineral. It is used as a white pigment in many indoor and outdoor colours. Titanium dioxide is nontoxic and is also used as a food additive.

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How does Titanium dioxide work?
Titanium dioxide has other properties beside its white colour if it is available in nanoscale size. As an anatas crystal Titanium dioxide is a photocatalyst, this is the basis for the self-cleaning effect, the antibacterial effect, the air-cleaning property and the other features of TitanShield-coatings.

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What accomplishes a Titanium dioxide-coating?
Titanium dioxide-coatings are used for the self-cleaning of surfaces, for air and water cleaning, for deodorization and for sterilization. Titanium dioxide is able to kill viruses, spores and all kind of germs.

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How thick is a coating with Titanium dioxide?
The Titanium dioxide-coating consists of a thin Titanium dioxide-layer on the surface. The thickness of the layer is approx. 100 to 600 nm, or 0.1 to 0.6 Micron

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Does the TiO2-coating affect the coated surface?
The Titanium dioxide-coating can affect organic compounds like resins. For such applications we offer primers. The primers consist of amorphous TiO2 and protect the surface effective.

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Is the TiO2-coating consumed by-and-by?
The Titanium dioxide-coating works as a catalyst. It is not consumed and it is effective permanently.

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Does the TiO2-coating stain the surface?
There is no staining if TitanShield is used as recommended. Every product is ac-companied by a detailed manual.

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What kind of pollutants decomposes the TiO2-coating in the air?
The Titanium dioxide-coating decomposes in the air: nitrogen oxide (NOx), formaldehyde, benzene and other volatile organic compounds (VOC). This includes troublesome odorous substances. These pollutants are decomposed to nontoxic compounds like carbon dioxide, water and nitrates.

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What kind of pollutants decomposes the TiO2-coating in water?
Nano-Titaniumdioxid decomposes organic pollutants in water. Decomposition products are nontoxic compounds like carbon dioxide, water and nitrates. The process is known as PhotoCatalytic Oxidization (PCO). The process works so much the better as the UV irradiation is more intensive. UV lamps are used for optimization.

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Does a TiO2-coating change the hardness and the feel of the surface?
The Titanium dioxide-coating has a hardness of approx. 5H (pencil grade) after hardening. Coated fabrics and textiles do not change their feel after coating.

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Can a TiO2-coating be removed?
A TiO2-coating can be removed mechanically. The use of a high-pressure cleaner or a sandblast removes the coating in part or completely. Abrasive cleaner can remove the TiO2-coating, too.

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How does the air cleaning work?
The pollutants in the air are repeatedly brought into contact with the coated surface by air movement and convection. If the pollutants strike the coated surface they are decomposed by TitanShield. Amongst others are decomposed in the air: nitrogen oxide (NOx), formaldehyde, benzene and other volatile organic compounds (VOC). Decomposition products are innocuous compounds like carbon dioxide, water and nitrates.

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How does the water cleaning work?
Nano-Titanium dioxide decomposes organic pollutants in the water. De-composition products are innocuous compounds like carbon dioxide, water and nitrates. The method is known as PhotoCatalytic Oxidization (PCO). The method works so much the better the more intensive is the UV-irradiation. UV lamps are used for optimisation. The method works good at room temperature. Pollutants that can not be oxidized will not be decomposed.

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How does the odour elimination work?
The odorous substances in the air meet with the airflow the coated surface. There they are decomposed to odorless compounds like carbon dioxide (CO2) and water (H20).

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How does the antibacterial effect of TiO2 work?
As bacteria meet the titanium dioxide coating it decomposes the cell wall of the bacteria. Thereby the bacteria are killed. If Nano-Titanium dioxide is used as a slurry the bacteria gather the Nano-particles and the titanium dioxide decomposes essential parts of the bacterias interior. The bacteria are killed.

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Can I apply a TiO2-coating by myself?
The coating should be applied on all even surfaces and on glas with a HVLP spray gun (high volume low pressure). With such a equipment the coating can be self-applied. Nevertheless the quality of the coating will not be as good as if applied professionally. Only with a certain experience a constant application will be reached.

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Do I need special precleaners?
Special precleaners are not needed. The surface should be cleaned thoroughly before coating. There should remain no rests of the cleaner on the surface.

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Is there scientific evidence for the efficiency?
The efficiency of titanium dioxide coatings is analysed and documented ample by scientific studies. On request we provide further information or links.

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What happens if the coated surface is damaged?
Scratches and small marks do not reduce the efficiency of the titanium dioxide coating. Usual effects of the weather do not wear the coating. The coating can only be removed by extreme influences like continuing scouring with sand or granulates.

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What is the difference between this „active“ titanium dioxide and the titanium dioxide from wallpaint?
The „active“ titanium dioxide consists of nanoscale particles in the „anatas“ form. On nano particles the surface properties dominate compared to the volume properies that determine the characteristics of „normal“ substances. The surface properties result amongst other things in the photocatalytic effect of the nano titanium dioxide.

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What brings about the addition of silver ions to titanium dioxide?
The addition of silver to titanium dioxide enhances the antibacterial effect of the coating. Silver ions have an antibacterial effect, that is increased in interaction with the antibacterial effect of the nano titanium dioxide. Silver doped titanium dioxide products are active even at very low light intensity.

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Does the coating work with sparse sunlight indoors?
The addition of silver ions enhances the efficiency of the titanium dioxide coating with sparse sunlight greatly. Silver ions have amongst other things an antibacterial effect, that is enhanced in interaction with the antibacterial effect of the titanium dioxide. Silver doped titanium dioxid products are active even at low light intensity.

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When do we speak of amorphous titanium dioxide?
In the amorphous state the titanium dioxide is not crystalline and therefore not photocatalytic active.

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How should titanium dioxide be stored?
Titanium dioxide should be stored cool and dark, at a temperature of 5 to 25°C.

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What has to be observed if glass is cleaned before the coating with tita-nium dioxide?
The surface of glass is often covered by an oil or silicone film. This film has to removed completely before coating.

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Can titanium dioxide be applied with a brush or a paint roller?
This is in principle no problem on rough and priming undergrounds. But it is very difficult to apply a constant and even covering layer, therefore we advise against it.

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How much titanium dioxide solution is required for one square meter?
This depends highly on the underground. Priming undergrounds need more coat application than non-priming undergrounds. Depending on the material (stone, glass, plastics) different amounts of titanium dioxide are needed for optimal results. Specific values are found in the application manuals.

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How can the formation of drops be avoided during the coating process?
Do not apply too much solution at once. Three to four thin layers are optimal.

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How long dries a titanium dioxide coating?
The titanium dioxide coating is dust-dry after half an hour if the weather is good. After this for example rain can cause no harm. The coating is mechanical resilient after 12 to 14 days. The coating reaches the maximum durability after approx. 8 weeks.

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What causes a whitish film on the surface after the application of titani-um dioxide?
This effect can be caused on dark underground by a thicker coating than recommended. On dark undergrounds it is recommended to apply titanium dioxide sparingly. Data to the strength of coating are found in the data sheets.

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How durable is the titanium dioxide film?
The durability depends heavily on the treatment of the coated surface and the surrounding conditions. The durability can vary between five and ten years, the photocatalytic effect lasts unlimited.

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