Active carbon capable of absorbing and decomposing formaldehyde and use thereof

Abstract

The invention discloses an application method of activated carbon, which can adsorb and decompose formaldehyde. The method comprises an activated carbon which is characterized in that metal phthalocyanine is loaded in the activated carbon through the manners of physical adsorption, ionic bonds or covalent bonds, wherein, the loaded amount of metal phthalocyanine is 0.1-15 percent; the activated carbon comprises activated carbons with various forms, such as fibrous activated carbon, granular activated carbon, powdered activated carbon, etc.; the metal phthalocyanine is any one from mononuclear metal phthalocyanine, binuclear metal phthalocyanine, polynuclear metal phthalocyanine, phthalocyanine polymers as well as the compound of the different metal phthalocyanines. The method used for removing the formaldehyde can be naturally carried out as long as oxygen exists in the air, does not require the irradiation of visible light or ultraviolet light, and can be conveniently used in various occasions; according to the requirement, the activated carbon can be processed into products in various shapes, such as a box of adsorbent, a filtering material of an air-conditioner, etc.

Description

technical field [0001] The invention relates to a material capable of decomposing formaldehyde and its application for purifying formaldehyde pollutants in indoor air, belonging to the technical field of indoor air purification. Background technique [0002] With the improvement of people's living standards and aesthetic appeal, home decoration has become more and more popular, and various decorations, furniture, floor panels, wall decoration materials, etc. have become indispensable in home decoration. At the same time, some imperceptible gas pollutants have also brought a lot of discomfort and troubles to people, among which formaldehyde gas is more common. According to the detection data of the indoor air pollution level of some buildings in our country, the peak concentration of formaldehyde in the indoor air can reach 0.8-1mg / m in newly renovated rooms with severe pollution. 3 , exceeding the national standard limit (0.08mg / m 3 ) more than 10 times, some even as high ...

AI Technical Summary

Problems solved by technology

[0004] Metal phthalocyanine has good catalytic activity, but it usually exists in the form of powder or solution, which is not convenient for direct use to treat formaldehyde in indoor air, and requires a suitable carrier

Activated carbon has been used to treat formaldehyde in indoor air due to its super adsorption performance and good thermal stability, but this treatment method is only the adsorption of formaldehyde by activated carbon, and the formaldehyde is simply transferred from the air to the activated carbon carrier. Formaldehyde has not been completely eliminated. Obviously, this treatment method has defects such as easy adsorption saturation and activated carbon regeneration.