Multi-aperture graphene film manufacturing method and gas separation element

Abstract

The invention discloses a multi-aperture graphene film manufacturing method. In the method, an energy beam is used for radiating the graphene film with lattice imperfection, as a result, the carbon bonding with lattice imperfection in graphene carbon ring hexagonal structure is broken, aperture is generated, and the multi-aperture graphene film is generated; moreover, size of the aperture is controlled by regulation on concentration of the lattice imperfection and/or radiation intensity of the energy beam. The invention further discloses a gas separation element using the multi-aperture graphene film manufactured by the method. By the method, the graphene film with gas permeation aperture is prepared actually for the first time, and application of the graphene film in the aspect of gas separation is realized successfully; in the method, size of aperture can be controlled as needed, moreover, the preparation technology is simple, the implementation cost is low, so that the method is suitable for large-scale industrial application; the gas separation element provided by the invention has very strong selectivity and high permeability to gas molecules, and by experimental verification, separation coefficient of the gas separation element to H2/N2 at normal temperature is up to 260.

Description

technical field [0001] The invention relates to a method for manufacturing a graphene membrane, in particular to a method for manufacturing a multi-aperture graphene membrane that can be used for gas separation. Background technique [0002] Inorganic material membranes represented by metals, metal oxides, ceramics, carbon, and porous glass have been widely used in gas separation, seawater desalination, food processing, wastewater treatment, and medicine due to their excellent physical, chemical, and biological properties. . However, it is a difficult problem to be solved that inorganic membranes have high gas selectivity and permeability at the same time. At the same time, how to improve the temperature and chemical resistance of the membrane while maintaining high permeability and high selectivity is another challenge for inorganic membrane separation applications. One of the main directions to solve these problems is to seek new inorganic membrane materials with control...

AI Technical Summary

Problems solved by technology

However, due to the complex operation, uncontrollable conditions, and unclear mechanism of molecular passivation, it is still mainly in the stage of molecular dynamics simulation.

[0004] In summary, although the technology of using multi-aperture graphene for gas permeation has good prospects, there is no preparation method of multi-aperture graphene suitable for practical applications.

Images