▎ 摘　　要

NOVELTY - The method involves depositing an etch layer (20) and a mask layer (30) on one surface of the metal foil (10). An etch layer of a portion is etched, from which the mask layer has been removed through an annealing process. A graphene layer (40) is formed by adding a carbon compound on the metal foil. The metal foil is removed after curing by adding a curing agent (50) to completely surround the graphene layer, the etch layer, and the mask layer. The curing agent is removed and the graphene layer is obtained. A chamber is provided for supplying argon gas in a plasma form. The carbon compound is made of a mixed gas containing argon, hydrogen, and ethylene. USE - Method for manufacturing an ultra-thin graphene membrane having nano-pores. ADVANTAGE - The method for manufacturing an ultra-thin graphene membrane has a significantly lower possibility of wrinkle formation or deformation than a single-layer graphene film because a multi-layered graphene film is formed. A fine dust slurry having a nano-level size can be filtered. The filtration can be performed, even under a low flux of water flowing during water treatment. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a filter membrane manufactured by a method for manufacturing an ultra-thin graphene membrane having nano-pores. DESCRIPTION OF DRAWING(S) - The drawing shows a flow chart of a method for manufacturing ultra-thin graphene membrane having nano-pores. Metal foil (10) Etch layer (20) Mask layer (30) Graphene layer (40) Curing agent (50)