If you are interested in the technical and scientific information of the filtration process used by the Electron MLT180A please refer to the following:-

Deep and thorough action under low temperature
Just in room temperature, TiO2 is active enough to completely oxidize organic contaminants in water, air and soil into harmless carbon dioxide, water, and simple mineral acids. This is different from the traditional catalyzed oxidation, which requires a temperature at least hundreds of degrees high.

Effective for a wide spectrum of organic contaminants
TiO2 has been proved to be effective for kinds of organic varying from hydrocarbon to carboxylic acid. The 114 kinds of pollutants published by the US EPA (Environmental Protection Agency) all can be treated by TiO2. Atomic organic compounds, such as dyes, nitrides and organic pesticides are also within the capability of TiO2

Strong oxidation ability
Even some of those organics which are hardly oxidized by ozone, such as trifluoro methane, carbon tetrachloride and hexachlorobenzene can also be dealt with by PCO. This is because the oxidation ability is far stronger than that of ozone, hypochlorous acid, potassium permanganate. This feature is rather meaningful for the degradation of obstinate organics.

Permanent function
TiO2 is not consumed in PCO reactions for it can deoxidize itself under UV irradiation and resumes its high oxidation efficiency. It can be used permanently without refilling.
UVA and UVC are usually required as activating light source for TiO2.

Electron air purifiers like the MLT180A model apply this technique to treat contaminants such as VOC, germs, bacteria, microbes and viruses and other pathogenic microorganisms latent in home. Further more, what we adopt is the nanosized TiO2 technique, in the view of enlarging the surface area in a system available for adsorption and decomposition of the organic pollutants and thus enhance the purification efficiency.

Mechanism of TiO2 photocatalytic degradation process

Under UV illumination, the TiO2 photocatalyst absorbs photons with energy equal or higher than its band gap energy (<385nm, usually UVA and UVC are applied). This will delocalizes a valence electron and excites it to the conduction band of the semiconductor. These photo excited charge carriers can initiate the degradation of the adsorbed chemical species by one or more forms of electron transfer reactions.

How does the UV irradiation work?
Ultraviolet Germicidal Irradiation, specifically in the UVC wavelength, has been proven safe and effective for almost 100 years in applications of killing harmful microorganisms through a process called photochemistry, which is the chemical reaction or change in material caused by exposure to light energy. In the photochemistry, photons in the ultraviolet spectral range are used to excite or cleave chemical bonds of the irradiated microorganisms and lead to the desired photo induced reaction and thus achieve sterilization and disinfection. Many common organic compounds based on the carbon and hydrogen combination, or hydrocarbons, toxic compounds generally formed by hydrocarbons associated with the lipid group as well as carbon based biological contaminants like bacteria, viruses and fungi all can be destructed by ultraviolet germicidal irradiation. Almost all indoor contaminants are this organic compounds.

But ultraviolet light becomes particularly useful in the destruction of contaminating organic compounds only when sufficient photon energy is present. The fundamental physical requirement for the ultraviolet light source is sufficiently high photon energy (wavelength) at the required intensity. A wavelength of 254nm is the recognized standard for optimum ultraviolet germicidal killing power. The radiation emitted by this wavelength ultraviolet light is very high and any microorganism that comes in contact with it will be destroyed almost instantaneously. The radiation emitted by the UV lamps of Electron air cleaners are approximately of this wavelength.

What’s the feature of the HEPA filter?
HEPA filter, High Efficiency Particulate Air Filter is made from very tiny fibers that are made into a tightly woven paper, which is regarded by the medical circles and labs as the best standard material for filtration for it creates a filter consisting of a multitude of very small sieves that can capture extremely small particles as tiny as 0.3um with an efficiency up to 99.97%. Once trapped, contaminates and particles are not able to flow back into circulation, due to the highly absorbent pores of the HEPA filter. Airborne dust, bacteria, mildews, viruses, pollen, pet dander and other allergens all can be filtrated by the HEPA filter.

How the active carbon filter works?
Activated carbon is a charcoal that is treated with oxygen in order to open up millions of tiny pores between the carbon atoms, resulting in a highly adsorbent material. Electron’s active carbon filter consists of a vast system of pores of molecular size. These pores powerfully absorb odor and toxic gases like formaldehyde, benzene, etc.

Why anions are adopted?
Anions are molecules with negative charges and are formed by the coalescence of electrons and neutral molecules in the air. Research shows that anions are good for health. When the anion concentration in the air reaches 105-106/ cm3 the air itself is prophylactic. Anions are capable of enhancing the function of breathing, dispelling the fatigue, slowing down the heart rate so as to increase the oxygen content in the blood and keeping the blood pressure normal. They sedimentate dust and smoke in the air by making them electriferous and thus improve the air quality. Considering anion’s contribution to health, Electron’s air purifier adopts this technique.