Preparation method of graphene/copper/active carbon composite material

Abstract

The invention relates to a preparation method of a graphene / copper / active carbon composite material. According to the method, firstly, graphene oxide and copper salt are uniformly mixed; after no precipitate is generated, basic solution and active carbon are added; suspension liquid is obtained after the uniform stirring; next, the suspension liquid is put into a reaction kettle for constant temperature heat treatment; performing centrifugal separation; performing drying treatment on obtained paste solids; then, putting the materials into a tubular furnace to perform heat reduction in H2 / Ar mixed atmosphere; performing granulation on the obtained powder; finally preparing graphene / copper / active carbon composite material particles. The catalysis activity and the specific surface area of theprepared graphene / copper / active carbon composite material are obviously enhanced and increased; the advantages of developed pore structures, high intensity, low impurity content, proper granularity,small resistance, easy regeneration and the like are realized; the operation process is simple; the efficiency is high; the industrialized production and application can be easily realized.

Description

technical field [0001] The invention relates to a composite material, in particular to a preparation method of a graphene / copper / activated carbon composite material. Background technique [0002] As an excellent adsorption material, activated carbon is often used in air purification, water purification, industrial waste gas recovery, etc. Its application scope involves chemical industry, food processing, agriculture, national defense and other fields, and plays an important role in environmental protection and human life. The adsorption properties of activated carbon depend on its well-developed pore structure and unique surface chemistry. However, most activated carbons have a microporous structure, which limits their adsorption performance. In response to this problem, researchers have achieved certain results from the preparation of new carbon materials and the modification of ordinary activated carbons. For example: different active components are loaded on the surface ...

AI Technical Summary

Problems solved by technology

However, most of the activated carbon has a microporous structure, which limits its adsorption performance. In response to this problem, researchers have achieved certain results from the preparation of new carbon materials and the modification of ordinary activated carbon.

For example: different active components are loaded on the surface of activated carbon materials, but since most of the supported catalysts are metal catalysts containing noble metals such as titanium, vanadium, molybdenum, tungsten, platinum and palladium, the loading capacity is small, the distribution is uneven, and the effective exposed area Not enough, high cost, not suitable for wide application

[0003] The nano-copper catalyst is easy to prepare and has good catalytic activity, but it is prone to agglomeration during the preparation process, and its surface area is reduced, which eventually leads to a decrease in catalytic activity.