Jiaozhou Formaldehyde Detection Photocatalyst Principle of Formaldehyde Removal How to Choose Photocatalyst?

With the gradual improvement of people's health awareness, formaldehyde removal has become a very important step after home decoration. Commonly used formaldehyde removal materials on the market now include activated carbon, Maya blue and photocatalyst. Most people are familiar with activated carbon and Maya blue, but they know little about the formaldehyde removal principle of photocatalyst and how to choose and buy it. The editor has compiled a lot of information to tell you how to use it according to the formaldehyde removal principle. Choose formaldehyde removal materials and methods based on your own circumstances.
Is photocatalyst useful in removing formaldehyde at home?
Photocatalyst is certainly effective in removing formaldehyde at home, but it also has its limitations. Photocatalysts only work under ultraviolet irradiation. Ordinary indoor light is weak, and its intensity and energy level are not enough to cause the photocatalyst to undergo a catalytic reaction. The decomposition amount is very limited, so the direct use of photocatalysts for indoor formaldehyde removal is not ideal.
Some scientific research institutions have also proposed some improvement methods, such as adding Maya blue or tourmaline and other materials with different compositions during the photocatalyst production process to remove formaldehyde to achieve more ideal results.
The principle of formaldehyde removal by photocatalyst.
The photocatalyst will produce a photocatalytic reaction similar to photosynthesis under light, decomposing organic pollutants into non-polluting substances, so it has a strong function of removing formaldehyde and purifying the air. Under light irradiation, the photocatalyst can absorb light energy equivalent to the band gap energy and cause its surface to be excited to generate electrons and holes. These electrons and holes have strong reducing and oxidizing abilities and can react with water or stored oxygen to produce hydroxyl radicals and super anion ions. It is through the chemical effect produced by these ions that the formaldehyde present in the air is removed. And be careful that the sprayed photocatalyst will form a coating. As long as it is not wiped off with force, the photocatalyst can remain for a long time and can continuously remove the remaining formaldehyde.
How to choose a photocatalyst?
When choosing a liquid photocatalyst, you should observe its dispersion. Dispersion in photocatalyst production is a technical difficulty and requires high costs. If the discretization is not done well, the effect will be greatly reduced. The identification method of dispersion is very simple, mainly observing whether there is precipitation at the bottom of the bottle. If there is a large amount of precipitation, it means that the photocatalyst was not dispersed well enough during the production process.
The Tyndall effect can also be used to identify the quality of the photocatalyst. The step is to put the photocatalyst solution into a transparent container and then illuminate the photocatalyst through the container with a flashlight. If a beam of light appears in the liquid, it means the quality of the photocatalyst is good.
The cost of high-quality photocatalysts is high. There are some photocatalysts on the market that cost less than 50 yuan for a bottle. They are often either not pure enough or have poor dispersion. Therefore, it is not recommended to buy products that are too low-priced.
The above is an introduction to the principle of formaldehyde removal by photocatalyst. I hope the above introduction will be helpful to everyone. Experts remind: Only with excellent product quality, standardized construction procedures and professional construction equipment can the effectiveness of photocatalyst formaldehyde removal be guaranteed.
Main content of services: Formaldehyde detection, formaldehyde removal and odor removal
Main business service scope: Qingdao, Huangdao, Jiaonan, Jiaozhou, Chengyang, Jimo, Shouguang, Qingzhou
Contact person: Manager Ye
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Company address: Shandong Huazhite, Jindu Garden Block, Hong Kong Middle Road, Qingdao City, Shandong Province ( Aoyin Photocatalyst Service Center) (in Shinan)