A preparation and application of a composite material with good thermal stability for removing liquid crystal monomers

Abstract

The present invention discloses a preparation and application of a composite material with good thermal stability for removing liquid crystal monomers, belonging to the field of pollutant treatment technology. It specifically includes the following steps: Step S1. Preparation of biomass powder; Step S2. Preparation of charcoal: Wrapping the biomass powder with aluminum foil paper, placing it in a muffle furnace, conducting pyrolysis and heat treatment, and then grinding and sieving it; Step S3. Preparation of charcoal composite material: Cultivating the charcoal and iron oxide together; Step S4. Aging treatment of the composite material. The invention simulates the process of the formation of a composite structure between charcoal and iron minerals in the natural environment, and co-cultivates the charcoal and iron minerals in the water body. Through chemical and physical adsorption effects, the charcoal and iron minerals are combined to prepare a composite material, which enhances the thermal stability of the charcoal composite material. Then, the charcoal composite material is subjected to aging treatment to increase the oxygen-containing functional groups and specific surface area of the charcoal, thereby improving its adsorption capacity and adsorption efficiency for liquid crystal monomers.