A kind of air purification filter screen and preparation method thereof

Abstract

The invention discloses an air purifying filter screen and a preparation method thereof; the air purifying filter screen is composed of a carrier and a catalyst; the carrier is composed of foam ceramics, and the foam ceramics are activated by an acid activator and then are subjected to surface modification by a surface modification agent; the catalyst comprises manganese oxide, nickel oxide and cerium oxide. The preparation method of the air purifying filter screen comprises the steps: soaking the foam ceramics with the acid activator, carrying out activating treatment of the surface and internal gaps of the foam ceramics with the acid activator, then soaking the cleanly washed foam ceramics with the surface modification agent, dissolving a manganese salt, a nickel salt, a cerium salt and a surfactant in water, stirring the components at room temperature, then adding a strong alkali, adjusting the pH to 8.0-10.5, carrying out a reaction for 1-30 h, then filtering, and mixing the obtained filter slag with a silica micro-powder to obtain slurry; spaying the slurry to the surface and the pore passage interior of the carrier by a spraying machine; and finally, calcining for 0.5-6 h at the temperature of 200-450 DEG C. The prepared purifying filter screen has the characteristics of small wind resistance, firm adhesion and high purification efficiency.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to an air purification filter and a preparation method thereof. Background technique [0002] With the development of industry, the problem of air pollution has become increasingly serious, and indoor air pollution has also begun to threaten human health. At present, in the industry of air purification products, the purification effect of particulate pollutants in the air can generally meet the needs of people's lives. However, indoor air also contains a large amount of volatile harmful gases from the atmosphere and from furniture and building materials. Formaldehyde and other harmful gas components emitted, these harmful gases will seriously damage the health of the human body, and it is difficult to remove through simple filtration. [0003] At present, air purifier products are mainly used for targeted air purification treatment, while mainstream air purifier products on ...

AI Technical Summary

Problems solved by technology

Among them, photocatalytic decomposition materials can only be used under the condition of light, and are not suitable for air purifier equipment that runs all day long; precious metal materials have excellent catalytic performance, but their high price limits their application range, and it is difficult to apply to common In air purifier products; due to their low price and high catalytic activity, transition metals, rare earth metals and their oxides have begun to attract people's attention and become catalyst materials

Images