Photocatalyst is a scam

Photocatalyst is a nanoscale titanium dioxide as a representative of the photocatalytic function of the light semiconductor material of the general term, the international treatment of indoor environmental pollution of one of the safest materials. In English, it is called "photo catalyst". As the name suggests, it is in the light environment, the medium material produces positive and negative electron charge, decompose the air into hydroxide ions, so as to produce decomposition and reduction. The most representative materials are nano-sized titanium dioxide and nano deformaldehyde enzyme. Basic principle editing Photocatalyst [Photocatalyst] is the synthesis word of light [Photo=Light] + catalyst (catalyst) [catalyst]. Photocatalyst is a kind of photo-semiconductor material with photocatalytic function represented by nano-sized titanium dioxide. Photocatalyst in the light of irradiation, will produce similar to photosynthesis photocatalytic reaction, the production of oxidation capacity of free hydroxyl and active oxygen, has a strong photo-oxidation reduction function, oxidation and decomposition of a variety of organic compounds and part of the inorganic matter, can destroy the cell membrane of bacteria and curing viral proteins, bacteria and decomposition of organic pollutants, organic pollutants decomposition into non-polluting water (H2O) and carbon dioxide (CO2), and thus the photocatalyst is a kind of nano-sized dibasic photocatalyst to remove formaldehyde reaction principle. And carbon dioxide (CO2), thus has a strong sterilization, deodorization, mildew, anti-fouling self-cleaning, air purification function. Photocatalysts have good degradation and killing effect on low and medium molecular unstable compounds and most of germs, including formaldehyde. Product Classification Editor Photocatalyst products are mainly photocatalyst spray, photocatalyst jewelry, self-cleaning glass[1] ? Photocatalytic ceramics, photocatalytic floor tiles photocatalytic air purifier (home, commercial), car air purifiers and so on. Since the photocatalytic effect must be mediated by oxygen or water molecules, the effective contact concentration of the photocatalyst on the surface of the purification product is critical, and in addition, the photocatalyst molecules must be below 50 nanometers in order to have a good photocatalytic effect. Therefore, how to integrate the nano photocatalyst into other substances without coagulation, and how to make the nano photocatalyst distribution to the surface of the product is the current focus of the technical research of the production enterprises. So far, except for spray photocatalyst products, the purification effect of other synthetic photocatalyst products is not very satisfactory. Photocatalyst purifier or purifier, because the photocatalyst can only be sprayed onto the inner filter, and the filter area is very small, the number of photocatalysts that can be sprayed is very small, so the purification performance is poor. Selection points edit Performance 1, light wave absorption range (the most photocatalytic nanometer titanium dioxide on the market as an example). Pure titanium dioxide nanopowder can only absorb ultraviolet light below 400nm, in the natural environment, the proportion of ultraviolet light is low, less than 10% of the natural light, so the pure photocatalyst is basically worthless. Thus, as a household photocatalyst, it must achieve visible light absorption. Of course, it is best to absorb far infrared light, so that the night and closed cabinets can also maintain good formaldehyde degradation performance. 2, weathering photocatalyst products to withstand the test of climate, such as physical wear and tear, hot and cold, their own lattice defects caused by a combination of damage, its ability to withstand called weathering. Weatherability photocatalysts should be selected, and photocatalysts that are easy to fall off have no value for home use. Product Advantage Edit 1, comprehensive: photocatalyst can effectively degrade formaldehyde, benzene, toluene, xylene, ammonia, TVOC and other pollutants, and has a highly efficient broad-spectrum disinfection performance, can decompose and harmless treatment of toxins released by bacteria or fungi. 2, continuity: in the reaction process, the photocatalyst itself will not change and loss, in the light of the irradiation can continue to purify the pollutants, has the advantages of time-lasting, continuous action. 3、Safety: non-toxic, harmless, safe and reliable for human body; the final reaction product is carbon dioxide, water and other harmless substances, will not produce secondary pollution. 4, high efficiency: photocatalysts use inexhaustible solar energy and other light energy can be diffused environmental pollutants in a low concentration state to remove the purification. Product Evaluation Editor I. Thoroughly safe, no secondary pollution. Because the photocatalyst has an advanced principle of action, can form a film on the surface of the decoration materials, furniture, formaldehyde and other contact with the air before the injury to the human body, rapid decomposition of formaldehyde, benzene, ammonia, TVOC and other indoor pollutants such as carbon dioxide and water, harmless treatment, no secondary pollution, so that people can use the peace of mind. Second, a spray, long-lasting effect. Theoretically, if the photocatalyst coating is not worn out, because it only does catalytic platform, itself does not react, no loss, a spray, can be permanently effective. Third, photocatalyst can increase the concentration of negative ions in indoor air, 100 square meters of the house sprayed with photocatalyst, equivalent to 10 birch trees at the same time the amount of negative ions released, so that the owner of the house was born out of the nature, the sea, the forest in general, a refreshing feeling. Theoretically speaking, photocatalyst is one of the best quality products to remove formaldehyde, but in fact the photocatalyst to play a role in the ultraviolet light to stimulate, and the room can not always exist in the ultraviolet light, especially some of the drawers, cabinets, such as the back of the formaldehyde release of the most serious places, but also can not see the light. This limits the role of photocatalysts. Secondly, different types of photocatalyst effect is different, even if the same type of photocatalyst, particle size also determines the actual effect, generally speaking, the smaller the particles the better. There are countless photocatalytic products on the market, often some unscrupulous businessmen make the best out of the best, with some particles larger than 100 nanometers in diameter of poor quality titanium dioxide manufacturing photocatalytic products, such products actually have no effect at all. The diameter of high-quality photocatalyst should be within 10 nanometers. In addition, the photocatalyst can produce oxidizing properties when it sees light, but only harmful gases will be oxidized and decomposed when they meet the photocatalyst, which limits the effect of the photocatalyst. Some adsorption materials themselves also contain photocatalytic components, the removal of harmful gases is more effective.