Preparation method of adsorption material for organic pollutants in atmosphere

Abstract

The invention relates to the field of new materials and environmental protection, in particular to a preparation method of an adsorption material for organic pollutants in the atmosphere. The method includes the following steps that a graphene oxide dispersion is prepared; a reducing agent is added into the graphene oxide dispersion, and stirring is conducted for 2-5 min; activated carbon is soaked in the graphene oxide dispersion and sealed; the mixture is heated to 85-95 DEG C and the temperature is kept for 0.5-24 hours, and the product is obtained after drying. According to the method, the hydrophobicity of graphene can be effectively used for preventing the adsorption of water vapor, at the same time, the gaseous organic pollutant adsorption of active sites of activated carbon is not affected, and the adsorption effect of activated carbon is significantly improved. In addition, the process is simple and the low-cost large-scale production can be achieved.

Description

technical field [0001] The invention relates to the fields of new materials and environmental protection, in particular to a method for preparing an adsorption material for organic pollutants in the atmosphere. Background technique [0002] With the development of industry, a large amount of volatile organic pollutants (VOC) escape into the atmosphere, causing serious air pollution. For VOC in the air, the commonly used adsorption materials on the market are activated carbon or activated carbon fiber, but they all have the disadvantage of being easy to absorb water vapor, especially in coastal areas with high humidity and more serious moisture absorption, so that the effective adsorption space will be occupied and used The space for adsorbing pollutants is reduced. The existing activated carbon contains a large number of hydrophilic functional groups, which is the reason for its hygroscopicity, but at the same time, these functional groups are effective adsorption sites for...

AI Technical Summary

Problems solved by technology

For VOC in the air, the commonly used adsorption materials on the market are activated carbon or activated carbon fiber, but they all have the disadvantage of being easy to absorb water vapor, especially in coastal areas with high humidity and more serious moisture absorption, so that the effective adsorption space will be occupied and used The space for adsorbing pollutants is reduced

The existing activated carbon contains a large number of hydrophilic functional groups, which is the reason for its hygroscopicity, but at the same time, these functional groups are effective adsorption sites for adsorbing pollutant gases, so the hygroscopicity cannot be reduced by removing functional groups