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Whats Photocatalyst

WGC Photocatalyst solutions produce similar to the reaction of the photosynthesis of the plant because it has a function of purifying air and decompose major harmful substrates such as TVOC’s. It require only sun light (ultraviolet). When you applied WGC photocatalyst to the wall of 500 square meters, the effect of air purification is assumed to correspond to the 20 Ginko trees. Photocatalyst effect last as long as there is light. WGC Photocatalyst solutions even react to visible light waves thus it is very useful for LED light and florescent light.

WGC Photocatalyst is a situation of high energy state by absorbing light and also giving the energy to substances cause a chemical reaction. Semiconductor or a metal complex are used for a photocatalyst and titanium oxide is the most well used for it. When the light comes toward  titanium oxide,same as silicon which is used in solar battery, holes is produced that have both positive electron and negative electron

Function of Photocatalyst

When the titanium oxide with a photocatalytic function to absorb light, surface of it will

1 Electrons that has absorbed light energy to make holes excited.

2.Oxygen molecules and water molecules on the surface of titanium oxide are  reacted with the active oxygen generated by the electrons and holes.

3.Organic substances oxidized and decomposed.

Titanium dioxide

It is a titanium oxide that has attracted most attention as a representative of the photocatalyst.

Why the titanium oxide has been put to practical use even so many substaces with the characteristics of the photocatalyst.

1. Safe to use Titanium dioxide is harmless for the human body and it has been used for coloring of food and cosmetic
2. Good Cost Performance Ore is a readily available substance on the earth and its contains titanium oxide.
3. Top level Photoactive effect Titanium oxide has the energy to take on a very high activity when receiving the light energy. The power exert function of resolving power and super-hydrophilic effect.
4. Insolubility Titanium oxide will never decompose its’self. Also it has a characteristic of durability in acidic or alkaline hence it is available to apply in various situations.

1. Self Cleaning Function

WGC Photocatalyst coating solutions has a “self-cleaning function” that the dirt adhering to the coating layer is decomposed when the light irradiates, and washed away by rain. It is well known fact that building maintenance cost a lot but WGC Photocatalyst solutions may deduct the number of maintenance and cleaning cost by natural sunlight and rain.

Click picture

① UV Light strikes toward the WGC photocatalyst layer
② It produce oxygen and bond with water in the air.
③ WGC photocatalyst layer bonds with those and make hydrophilic layer on the surface of substrates.


2.Air Purification

①Once light strikes toward  the WGC photoctalyst layer
②It react with harmful substances such as Nox and PN2.5 in the air and changes to harmless substances.

Also, the photocatalytic effects contribute to the global environment. It is not only prevents getting dirt from dusts , but also decomposes harmful Nox (nitrogen oxide) in the atmosphere

3. Decomposition power

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①  Light strikes the photocataly
st layer.
②  Electrons and holes is produced.
③  Oxygen in the air connect with electrons, and water in the air connect with holes.
④  Active oxygen called  super-oxide ions and OH radicals are generated on the surface of the photocatalyst layer, and those brings decomposition power

Decompose TVOC’s

WGC Photocatalyst solutions also decompose and reduce odor. WGC Photocatalyst solutions is effective for Formaldehyde, Acetaldehyde, Toluene,influenza, house dust allergy and sick-house syndrome. It is top quality as ISO standard which is not so many competitors couldn’t manufacture.




Nitrogen Oxide (NOX)

All enquiry about Photocatalyst Japan TEL 0081-70-3976-8564 Photocatalyst solutions (Monday through Friday10AM- 6:30PM(Japan time) )


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