Publication

Method for producing a gas separation membrane containing a single-layer porous graphene film

2025

Abstract

Herein described is a method for producing a gas separation membrane precursor and optionally a gas separation membrane, in particular for co2 separation, containing a porous single-layer graphene film. the method comprises the following steps: (a) providing a metal foil substrate; (b) preparing a porous single-layer graphene film on the metal foil substrate; (c) depositing a gas-permeable support film on top of the porous single-layer graphene film; (d) applying a layer of transfer release tape on top of the gas-permeable support film; and (e) removing, in particular delaminating, the metal foil substrate to obtain a gas separation membrane precursor. the gas separation membrane can be obtained from the gas separation membrane precursor. also described is a gas separation membrane obtainable by the method according to the invention.

Official source

https://infoscience.epfl.ch/entities/publication/efd84f9a-45a3-4ef7-9575-3c175b99c598

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2025

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/efd84f9a-45a3-4ef7-9575-3c175b99c598

About this result

Related concepts (32)

Bilayer graphene

Bilayer graphene is a material consisting of two layers of graphene. One of the first reports of bilayer graphene was in the seminal 2004 Science paper by Geim and colleagues, in which they described devices "which contained just one, two, or three atomic layers" Bilayer graphene can exist in the AB, or Bernal-stacked form, where half of the atoms lie directly over the center of a hexagon in the lower graphene sheet, and half of the atoms lie over an atom, or, less commonly, in the AA form, in which the layers are exactly aligned.

Graphene

Graphene (ˈgræfiːn) is an allotrope of carbon consisting of a single layer of atoms arranged in a hexagonal lattice nanostructure. The name is derived from "graphite" and the suffix -ene, reflecting the fact that the graphite allotrope of carbon contains numerous double bonds. Each atom in a graphene sheet is connected to its three nearest neighbors by σ-bonds and a delocalised π-bond, which contributes to a valence band that extends over the whole sheet.

Synthetic membrane

An artificial membrane, or synthetic membrane, is a synthetically created membrane which is usually intended for separation purposes in laboratory or in industry. Synthetic membranes have been successfully used for small and large-scale industrial processes since the middle of twentieth century. A wide variety of synthetic membranes is known. They can be produced from organic materials such as polymers and liquids, as well as inorganic materials. The most of commercially utilized synthetic membranes in separation industry are made of polymeric structures.

Related publications (1)

Method for producing a gas separation membrane containing a single-layer porous graphene film

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