Photo Catalyst Products

The New Cleaner to Purifies your home and car

Trade Shows

Feb 2007

Reed Gift Fairs - Melbourne February

Melbourne Exhibition & Convention Centre

3/02/2007 - 6/02/2007

Gift & Homewares Australia

Sydney Showground, Sydney Olympic Park

24 - 27 February 2007

 

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What is photo catalyst?

 

 The term photocatalysts consists of the combination of photochemistry and catalysis and implies that light and a catalyst are necessary to bring about or to accelerate a chemical transformation.
Photocatalyst can be induced photoreaction by the presence of a catalyst with the light with various photocatalysts, the titanium dioxide is wide used because it has stable about acid-base condition and harmless about human body.

The Mechanism of Photocatalyst.

     When a photon with an energy of h υ matches or exceeds the energy band gap, E.g., of photocatalyst TiO2 , as a n- type semiconductor, an electron, , is exited from the valence band into the conduction band, leaving the hole, , in valence band. The hvb+ means the hole in the valence, ,means the excited electron in conduction band and we called the charge pair " – ". The hole produce hydroxyl radicals (·OH) to oxidation of surface bound H2O, electrons are transferred to oxygen of absorbed surface TiO2 so that produce super oxide (O2ˉ).

     The role of the hole and electrons at the surface of TiO2 in heterogeneous have a oxidants (or reductants). These oxidants decompose organic materials into carbon dioxide (CO2) and water(H2O) etc. This photocatalyst TiO2 used for clean up pollution in the air and water and sterization, decontamination and deodorization etc.

 The hydrophilic ability of photocatalyst TiO2 is induced by the irradiation with light on the surface which convert into hydroxyl group. Coating on glasses, there is the action that from the water film without the water drops being formed on the photocatalyst TiO2 film. Therefore, it is application for bathroom glass and front window, back mirrors in the car. In case of application for building, the hydrophilic surface of photocatalyst TiO2 is apt to cleaning off by water, e.g. rain, although it is dirty by pollution. And transportation application is preventing from dirty on the transparent insulation board, road side wall and road sign, etc.

The use of photocatalyst TiO

1. Environmental purification : VOCs in the air, NOx, SOx, dioxin, waste water, wastes, exhaust gas, underground water etc.
2. Road purification : inner wall in tunnel, guard fence in road side, reflection mirror, signpost board, soundproof construction.
3. House equipments : bedpan, tile, mirror, bathtub in bathroom, blind, cover of illuminator, curtain, wall paper, etc
4. Construction materials : indoor, out door construction materials.
5. Electronic machine of house : air conditioner, air purifier, water purifier, refrigerator, dishwasher & drier etc
6. Vehicle : air conditioner in a car, side mirror, front & back mirror, indoor materials in a car etc
7. Agriculture : vinyl house, biocide, etc.
8. Kitchen : table ware, knife, chopping board, ladle, spoon, cups etc
9. Shop equipments : outdoor, indoor board, electric light etc
10. Medical instruments operation tools : cancer treatment, anti-virus, anti-bacteria etc
11. Special application on some products: Spinning (including clothing, Yarn, Carpet, etc.）, lighting, filter, Floor, pvc, etc.