Method of manufacturing nanoporous graphene membrane
AssigneeKorea Institute of Science and Technology
InventorsYoung Min Jhon, Young In Jhon, Seok Lee
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Abstract
One aspect of the disclosed is to provide a method of manufacturing a nanoporous multilayer graphene membrane, including a first step of oxidizing a surface of a multilayer graphene membrane, a second step of reducing the oxidized surface of the multilayer graphene to carry out reductive etching such that oxidized carbon atoms on the surface are naturally and randomly dispersed, and a third step of repeatedly performing a series of the first and the second steps until nanopores penetrating the multilayer graphene are formed.
Claims16
A method of manufacturing a porous graphene membrane, comprising:
- a first step of oxidizing a surface of multilayer graphene, wherein the multilayer graphene is placed under an environment with oxygen-based radicals for oxidation of the surface of multilayer graphene, and the surface of multilayer graphene is oxidized in a randomly dispersed form by lowering an oxidation amount so as not to completely oxidize the entire surface;
- a second step of reducing the oxidized surface of the multilayer graphene to carry out reductive etching of oxidized carbon atoms in a randomly dispersed form;
- and
- a third step of repeatedly performing a series of the first and the second steps at least twice until nanopores having diameter of 0.4 to 100 nm are formed in the multilayer graphene, wherein the number of repetitions is adjusted until nanopores penetrating the multilayer graphene are formed.
Dependencies are inferred from the claim text.