At present, the air purifiers that are commonly used on the market and are more suitable for home use can be roughly divided into the following three types:
Filter air purifier: This kind of air purifier usually uses activated carbon as a filter material to filter out harmful substances such as benzene and formaldehyde in the air through activated carbon to purify indoor air. However, since the ability of activated carbon to adsorb harmful substances after using for a period of time is gradually weakened, it is necessary to replace the filter element at intervals (the recommended area is about half a year).
Electrostatic air purifier: This is an air purifier that collects dust from the air on the dust collecting plate by adsorption and kills bacteria and viruses by a strong electric field on the integrated board to purify the air. It should be noted that the electrostatic air purifier has a lower adsorption effect on harmful substances such as formaldehyde and benzene than the filter air purifier.
Optical media air purifier: This purifier is also called photocatalyst air purifier. The advantage is that after adsorbing various harmful substances, it can be converted into harmless water and carbon dioxide through a series of chemical reactions. However, the application of photocatalyst air purifiers must be able to function under sunlight (or ultraviolet radiation), and the killing effect on bacteria is not ideal.
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