The technology's reaction in detail
Air purification based on titanium oxide and photocatalysis
Titanium dioxide (TiO₂) is a semiconductor. In such compounds, electrons can exist in two states: free and bound. The electron’s default state is bound—that is, it is linked to an ion within the crystal lattice, forming a strong chemical bond.
More than 3.2 electron-volts (eV) of energy are required to “knock” the electron out of the lattice (for comparison: the kinetic energy of a flying mosquito is about one trillion eV).
This corresponds to the amount of energy carried by a light quantum with a wavelength of less than 390 nm. The light quantum “kicks” an electron out of the lattice, creating an electron vacancy, or simply a “hole.” Both the electron and the hole move actively within the TiO₂ particles. As they move, they either recombine (meet, “marry,” and return to a bound state) or escape to the surface, where they are immediately trapped.
Both the hole and the electron are incredibly reactive. The catalyst surface acts as a powerful oxidizing agent. Oxygen coming into contact with the catalyst surface and capturing a free electron transforms into an oxidative radical (O⁻) capable of destroying (oxidizing) any organic compound.
The hole, in turn, reacts with the first organic compound it encounters on the surface. It extracts an electron from the compound’s structure, causing the compound to break down into water and carbon dioxide.
Each time “spent” pairs are replaced, the “hole” rises to the catalyst surface—like bubbles in a champagne glass—and releases a new pair. The oxidation process continues as long as light strikes the catalyst.
The photocatalytic filter mineralizes organic molecular contaminants, converting them primarily into carbon dioxide, oxygen, and water.
This specialized photocatalytic air purification and decontamination process enables cost-effective, sustainable, and highly efficient air cleaning for both residential and commercial applications.
Schematic diagram of our air purifiers
Air flows—driven by a fan (1)—first through the dust filter (2) and then through the porous wall of the photocatalytic glass element (3). Volatile organic compounds, bacteria, and viruses in the air are absorbed by the photocatalytic filter and mineralized into carbon dioxide and water vapor under the influence of an LED UV-A light source (4).
Proven effectiveness of air purifiers
Our air purifiers have been tested by renowned institutes and laboratories, and their effectiveness has been confirmed.
- Reduces >99.99% of all viruses, bacteria, mold spores & odors.