look at the color. Due to different preparation methods and different uses, photocatalysts exhibit different colors. Common colors include milky white, light yellow, light blue or colorless liquid, and translucent liquid. If the color is dark, it is a fake photocatalyst product. , light dispersion. When visible light penetrates the sol, significant scattering occurs, which is the Tyndall phenomenon. Colloids have Tyndall phenomenon but solutions do not, so Tyndall phenomenon can be used to distinguish colloids and solutions. No matter what color the photocatalyst solution is, there should be Tyndall phenomenon. If there is no Tyndall phenomenon, it is a shoddy photocatalyst product.
, stability. Photocatalyst dispersion technology is better and generally does not delaminate or precipitate. However, if the nanoparticle size is small and there is no dispersant, there may be a slight agglomeration phenomenon when left standing for a long time. Shaking it a few times during use will not affect the performance. If precipitation occurs easily and there is a lot of precipitation, it is a fake photocatalyst product. Fake and inferior products cause a large amount of precipitation due to poor material selection and poor dispersion technology. This precipitation is not caused by the so-called high content of nano-titanium dioxide, but is entirely caused by material and technical reasons. One reason is that ordinary titanium dioxide is used to fake nano-scale titanium dioxide particles that are thousands of times larger. Another reason is that the production process is not up to standard and the nano-titanium dioxide is in an agglomerated state that is much larger than the national nanotechnology standards.
, look at the bubbles. If the photocatalyst is shaken vigorously, a small amount of clear water bubbles will appear and disappear quickly. If soap bubbles appear after shaking and it will take a long time to disappear, it is a fake photocatalyst product.
, look at the fading function. Dilute methyl blue and drop it on the photocatalyst-sprayed ceramic tile. The blue color will disappear quickly after illumination. If it cannot fade or the fading is not obvious, it is a fake photocatalyst product.
, look at the onset of effect. Photocatalyst decomposes organic matter through surface action, so it takes a period of time to have a more obvious treatment effect. High-quality photocatalysts generally require 1 day to decompose organic matter.
, Look at the lighting conditions. Photocatalyst is a lightless state that performs catalytic action by absorbing light energy. Photocatalyst has no energy source and therefore has no effect. According to data, there are still very few products that can be mass-produced.
, look at the enterprise standard filing. Standards are basic documents that regulate the production of products by enterprises. The products produced by enterprises should at least have enterprise standards registered with the municipal quality and technical supervision bureau.
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)
Authenticity identification of Jiaozhou formaldehyde removal photocatalyst