The capability of producing powerful oxidizing hydroxyl radicals enables photocatalyst (TiO₂) to be anti-bacterial, non-toxic, deodorizing, hydrophilic, and self-cleaning. These properties make photocatalyst an ideal environmental protection product. The capability of producing powerful oxidizing hydroxyl radicals enables photocatalyst (TiO₂) to be anti-bacterial, non-toxic, deodorizing, hydrophilic, and self-cleaning. These properties make photocatalyst an ideal environmental protection product.

Photocatalyst (Titanium Dioxide or TiO₂) is a type of catalyst. It can lower the chemical activation energy to enhance chemical reaction or accelerate the reaction rate. However, the catalyst itself will not undergo changes and its structure will not be damaged as a result of the chemical reaction.

When Titanium Dioxide (TiO₂) absorbs Ultraviolet (UV) radiation from sunlight or illuminated light sources, it will produce pairs of electrons and holes (electron-hole pairs), which are mobile charge carriers carrying negative and positive charge respectively. The hole has strong oxidizing power and the electron has strong reducing power. When these electron-hole pairs react with moisture on the surface of the Titanium Dioxide (TiO₂), powerful oxidizing hydroxyl radicals like O, O₂, OH etc. will be produced. These hydroxyl radicals can provide different treatments to treat bacteria (organic matters) and odour (organic gases) specifically.

The very strong oxidizing power of Titanium Dioxide can destroy bacteria's cell membrane, causing leakage of the cytoplasm which results in the death of bacteria, coagulate the virus protein and inhibit its activity, capture and kill the bacteria that suspended in the air. Air passing through Titanium Dioxide purifier will be 99.997% bacteria-free.

Approved by the food testing laboratory of the United States Food and Drug Administration (FDA), Titanium Dioxide is considered a safe substance and harmless to human. It is commonly used in foodstuffs, domestic commodities, cosmetics and cultivation. After illuminated by light, titanium dioxide will produce hydroxyl radicals, which react with the organic matters in the air to form non-toxic inorganic matters. On the deodorizing application, the hydroxyl radicals will destroy the energy bonds of the organic gaseous molecules. This will help combine the organic gases to form a single molecule and accelerate the breakdown of organic gaseous substances, thus enhance the air cleaning efficiency.

Titanium Dioxide, also known as "Photocatalyst", has oxidizing power stronger than ozone ion, and adsorbing power better than HPEA activated carbon. According to trials performed by European and United States authoritative laboratories, the deodorizing power of a square centimetre (cm²) of photocatalyst is equivalent to about 500 refrigerator activated carbon deodorants and 150 times stronger than the high performance activated carbon. And, more importantly, it produces no secondary public nuisance.

Specially treated Titanium Dioxide (TiO₂) can be sprayed on window to form a thin film that is antifogging and heat tolerable up to 400 degree Celsius. It is also water stainless due to its hydrophilic nature. When dust particles fall on a titanium dioxide treated surface, it can be removed by clean water. The hydrophilic nature of titanium dioxide, coupled with the gravity, will enable the dust particles to be swept away following the water stream, thus making the product self-cleaning.

Nowadays, we live in enclosed compartments for a long time. According to proven statistics, there are more than 5,000 types of carcinogens hidden in enclosed compartments, which the air-conditioning system we currently use is not able to break down. Compared with various treatment methods, photocatalyst is the most ideal one, completely removing mites in the air, which causes 90% of asthmatic allergy cases.

Today, there are a lot of available products in the market that claim to have capability of killing bacteria and breaking down organic gases that cause damages to our health. However, photocatalyst, as a product of the world's most advanced environmental technology, is the most effective solution in resolving health problems caused by human damaging chemical substances, allergens and harmful bacteria