Preparation method of activated carbon dynamically coated with hydrophobic material

Abstract

The invention discloses a preparation method of activated carbon dynamically coated with a hydrophobic material. The preparation method comprises the following steps: (1), pretreating activated carbonto remove impurities on the surface of the activated carbon, marking pretreated activated carbon samples respectively, and then placing in a drying vessel for use; (2), preparing a solution of a hydrophobic monomer: dissolving the hydrophobic monomer and an initiator dibenzoyl peroxide in an organic solvent in an ice water bath, and mixing as a polymeric resin solution by stirring; (3), taking aproper amount of a polymeric resin solution and performing vapor deposition on the surface layer of the activated carbon by a vapor deposition method, and placing the obtained activated carbon in a constant-temperature blast drying oven with the temperature of 120-160 DEG C, and drying at the constant temperature for 2-4 hours to obtain modified samples. According to the preparation method provided by the invention, the preparation process is simple, the amount of consumables is small and a preparation condition is mild; the prepared modified activated carbon material has hydrophobic surface chemical properties, so that the defects that a porous carbon material absorbs moisture easily and adsorbs a small quantity of target organic matters at high humidity are made up; the prepared modifiedactivated carbon material is easy to recycle and recyclable.

Description

technical field [0001] The invention relates to the technical field of preparation of activated carbon modified materials, in particular to a preparation method of dynamically coated activated carbon with a hydrophobic material. Background technique [0002] With the development of science and technology, the progress of human beings, the gradual construction of modern industry, various chemicals are developed and utilized, which brings convenience to people's life. The hazards to the atmospheric environment and the human body have become increasingly serious and have become a problem that people have to face. [0003] At present, the problem of air pollution caused by volatile organic compounds (VOCs) has also become the focus of global attention. There are many ways to treat VOCs, but the adsorption method has the advantages of low energy consumption, low cost, and simple operation, and is currently the most widely used and most economical and effective method in VOCs tre...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the poor hydrophobicity of activated carbon in the prior art, the use of low surface energy substances to modify porous carbon materials and the use of low surface energy substances to load onto the surface of activated carbon to cause pore blocking, thereby affecting its hydrophobic performance. A preparation method for dynamically coating activated carbon with a hydrophobic material is provided, and the prepared hydrophobic material can significantly improve the surface hydrophobicity of the activated carbon

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