Photocatalyst Filt Screen is made by loading photocatalyst on different materials.It is always combined with activated carbon. Activated carbon is used to adsorbed Formaldehyde，Benzene，Ammonia and odors etc through abundant micro-hole on its surface.Shining of light source can stir up oxidation-reduction reaction to degrade the contaminants activated carbon adsorbed. Just like the chlorophyll in the photosynthesis of plants, the photocatalyst only supply the place of oxidation-reduction reaction and there doesn’t have any changes in it. Photocatalyst is a kind of new environmental protection material widely used in air-condition ,air-purification and etc.

Reaction Mechanism:

When the surface of titanium dioxide (TiO2) is exposed by the UV＜388nm light ,its inner will stir up hole-electron pair ,and the hole-electron pair will quickly remove to its surface and activate absorbed oxygen and moisture and occur free radicals (-OH ) and (-O2－).At the moment ,chain degradation reaction occurs between the free radicals and kinds of contaminant and ado each other .For strong oxidation ,the photocatalyst can realize the function of anti-bacteria by destroying the cell membrane.

ProductClassification :

According to base materials ,the Photocatalyst Filt Screen can be classified into the following:

• Polyurethane based alveolatephotocatalyst filt screen
• Paperbasedphotocatalystfiltscreen
• Aluminumbasedhexagonalphotocatalyst filt screen
• Fishnetphotocatalystfilt screen

Characteristic of product（Paperbasedphotocatalystfiltscreen） :

The rate of purify（％）：

Toluene :89.6         Formaldehyde:86.1           Ammonia:84.3

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