What is a nano photocatalyst?
Nano-photocatalyst refers to a substance that can promote chemical reactions without chemical changes under light, and its function is like chlorophyll in photosynthesis. Anatase nanometer titanium dioxide is the most important photocatalyst material. When it absorbs the energy of sunlight or other light sources, the electrons on the surface of the particle are activated and deviate from the original orbit, resulting in positively charged holes on the surface. The escaped electrons have strong reducibility, while the holes have strong oxidation. When they react with water vapor in the air, they will produce reactive oxygen species and hydroxyl radicals. Reactive oxygen species and hydroxyl radicals can oxidize and decompose most organic substances, pollutants, odors and bacteria into harmless carbon dioxide and water.
Nano-photocatalyst technology is a kind of nano-bionic technology, which is applied in many frontier fields such as environmental purification, self-cleaning materials, advanced new energy, cancer medical treatment, efficient antibacterial and so on.
How to identify the advantages and disadvantages of nanometer photocatalyst
The common photocatalyst products in the domestic market are mainly divided into three colors: golden yellow, egg yellow and milky white. First-class production technology and nanometer titanium dioxide particle size can make titanium dioxide evenly distributed in the photocatalyst liquid, without producing flocs such as precipitation, so the high-quality photocatalyst product is light yellow transparent liquid.
When consumers choose photocatalyst products, they first need manufacturers to provide reports on sterilization detection, degradation of harmful substances and non-toxic experiments with CMA marks, and then judge the quality of products through sensory appraisal.
Inferior products are mostly milky white products, which will precipitate after standing for 5 ~ 10 minutes, and a large number of white particles will accumulate at the bottom of the bottle. This precipitation shows that the product dispersion process is not good, which leads to the agglomeration of titanium dioxide. This agglomeration will directly affect the activity of photocatalyst, reduce the photocatalytic ability of products, and then lose the effect of degrading pollution.
High-quality photocatalyst products have no peculiar smell, while inferior photocatalyst has strong sour taste or strong alkaline smell. The ph of the product can be measured by simple pH test paper. The appearance of peculiar smell shows that a large number of organic components, such as corrosive acids such as phosphoric acid, are added in the production process, which will cause pollution and corrosion to the environment after spraying.
The price of nano-photocatalyst materials
Photocatalyst originated in Japan, and the particle size of titanium dioxide, the real photocatalyst raw material, must be below 10 nm in order to have photocatalytic decomposition ability and achieve the purpose of removing indoor harmful gases. Titanium dioxide is widely used in food, daily necessities and medical industries, and has no effect on organisms. It is recognized as an effective material for indoor environmental protection. The principle of photocatalyst in addition to formaldehyde is similar to the photosynthesis of plants. Through visible light, the water and oxygen in the air are converted into hydroxyl radicals and active oxygen with decomposition ability, and the harmful gases released by pollution sources are continuously decomposed with pollution sources as carriers. Governance once, 10 year warranty, long-term effective. Indoor in addition to formaldehyde, according to the construction area and pollution level, is generally around 70 ~ 90 yuan /m2.
First place: Oin
(High-tech enterprise specializing in indoor pollution control, drafting unit of national photocatalyst standard (photocatalyst for air purification), Guangzhou Aoyin Environmental Protection Technology Co., Ltd.)
Second place: 3M
(1902, founded in the United States, is an internationally recognized R&D pioneer, a global diversified science and technology enterprise, the top ten brands of water purifiers, and 3M China Co., Ltd.).
Third place: Liszt
(A new high-tech enterprise integrating research and development/production/sales of photocatalyst products, member of China Interior Decoration Association, Guangzhou Liszt Environmental Protection Technology Co., Ltd.)
Fourth place: Ou Di.
(Dalian High-tech Enterprise, the drafting unit of the national standard of Photocatalyst for Liquid Air Purification, Dalian odell Science and Technology Development Co., Ltd.)
Fifth place: Orson
(R&D and photocatalytic R&D technology for producing new nano-materials, nano-titanium dioxide, photocatalyst, etc., leading domestic indoor air purification material enterprise, top ten brands of photocatalyst, Dongguan Aosen Environmental Protection Technology Co., Ltd.)
Sixth place: Narme
(Vice President of China Photocatalytic Association, member of ISO International Standard Working Group for Photocatalytic Materials, drafting unit of industry standard, Chengdu Naermei Environmental Energy Technology Co., Ltd.)
Now you should know what a nano photocatalyst is. Bian Xiao also provides the price of nano photocatalyst for your reference. If you need to buy this product, you can give priority to the brand introduced by Bian Xiao above.