Rice hull silicon slow-release porous material for air purification and preparation method thereof

Abstract

The invention discloses a rice hull silicon slow-release porous material for air purification and a preparation method. The porous material is composed of an outer reactant diffusion layer and an inner micro-reaction layer. The rice hull silicon slow-release porous material for air purification is prepared from 1-8 g of chlorite, 1-16 g of paraffin, 0.5-4 g of acid and 1-5 g of rice hull silicon dioxide. According to the invention, by implementing control in two stages, namely reaction and diffusion, the slow release time of chlorine dioxide gas is effectively prolonged to three months or more, and stable release of the chlorine dioxide gas is realized; and air slow release is utilized for sterilization, a slow release amount and slow release time are accurate and controllable, cost is as low as several cents, the material is very green and environmentally friendly, and finally generated substances can safely return to the environment.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a rice husk silicon slow-release air-purifying porous material and a preparation method thereof. Background technique [0002] Air purification refers to providing overall solutions for various indoor environmental problems such as sterilization and disinfection, dust reduction and haze removal, removal of harmful decoration residues and peculiar smells, so as to improve living and office conditions and improve physical and mental health; however, the existing purification materials for sterilization and disinfection , such as a negative oxygen ion purifier, which uses its own negative ions to purify, remove dust, deodorize, and sterilize the air. However, the service life of negative ions in the air is very short, so it needs to be continuously injected into the air. sustained release; [0003] Secondly, chlorine dioxide is recognized by the World Health Organi...

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Problems solved by technology

[0002] Air purification refers to providing overall solutions for various indoor environmental problems such as sterilization and disinfection, dust reduction and haze removal, removal of harmful decoration residues and peculiar smells, so as to improve living and office conditions and improve physical and mental health; however, the existing purification materials for sterilization and disinfection , such as a negative oxygen ion purifier, which uses its own negative ions to purify, remove dust, deodorize, and sterilize the air. However, the service life of negative ions in the air is very short, so it needs to be continuously injected into the air. sustained release;

[0003] Secondly, chlorine dioxide is recognized by the World Health Organization as an A1-level high-efficiency bacteriostatic agent due to its strong oxidizing properties and reactivity. Long-term defects;

[0004] And the existing air purification materials generally adopt chlorine dioxide air purification gel, but the preparation process of this air purification gel is complicated, and the cost is high, and the slow release time and slow release amount cannot be accurately controlled, and the final product The material cannot be degraded naturally, and it is easy to cause secondary pollution;

[0005] There is also the existing air purification gel, which realizes the slow release of chlorine dioxide by dispersing chlorite and acid into the hydrogel. The control of slow release mainly controls the gas diffusion stage of chlorine dioxide. The hole prolongs the diffusion period, the service period is short, generally less than two months, the release is unstable, the concentration of the released gas is high at the beginning, and the subsequent release is unstable

[0006] Therefore, for the above-mentioned purification materials, due to the short reaction time between the sterilizing media, the use time is shortened, resulting in a low purification effect, and it is necessary to continuously replace new purification materials, which leads to problems such as increased costs. The invention provides A rice husk silicon slow-release air-purifying porous material and its preparation method to solve the problems raised in the above-mentioned background technology

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