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KR-20260062131-A - CARBON DIOXIDE ADSORPTION MEMBRANE WITH SURFACE MICRO OR NANOSTRUCTURE AND MANUFACTURING METHOD THEREOF

KR20260062131AKR 20260062131 AKR20260062131 AKR 20260062131AKR-20260062131-A

Abstract

One embodiment of the present invention provides a carbon dioxide adsorption membrane having a surface micro or nano structure formed thereon, comprising a mesh-shaped membrane having a micro or nano structure pattern formed thereon that increases the carbon dioxide gas contact time to improve adsorption efficiency, and a carbon dioxide adsorption layer comprising a carbon dioxide adsorbent located on the surface of the mesh-shaped membrane, and a method for manufacturing the same.

Inventors

  • 김창래
  • 이성준
  • 김대현

Assignees

  • 조선대학교산학협력단

Dates

Publication Date
20260507
Application Date
20241025

Claims (13)

  1. A mesh-shaped membrane having a micro or nanostructure pattern formed on its surface; and A carbon dioxide adsorption membrane having a surface micro or nano structure formed thereon, characterized by comprising a carbon dioxide adsorption layer including a carbon dioxide adsorbent located on the surface of the mesh-shaped membrane.
  2. In Article 1, A carbon dioxide adsorption membrane having a surface micro or nano structure formed thereon, characterized in that the micro or nano structure formed on the surface comprises one or more types from the group consisting of an uneven structure and a dimple structure.
  3. In Article 1, A carbon dioxide adsorption membrane having a surface micro or nano structure formed thereon, characterized in that the surface roughness (Ra) of the mesh-shaped membrane having a micro or nano structure pattern formed on the surface is 0.1 to 10 μm.
  4. In Paragraph 2, A carbon dioxide adsorption membrane having a surface micro or nanostructure formed thereon, characterized in that the diameter of the micro or nanostructure in the micro or nanostructure pattern is 10 nm to 100 μm.
  5. In Paragraph 2, A carbon dioxide adsorption membrane having a surface micro or nanostructure formed thereon, characterized in that the spacing between the micro or nanostructures in the micro or nanostructure pattern is 20 nm to 200 μm.
  6. In Article 1, A carbon dioxide adsorption membrane having a surface micro or nano structure formed thereon, characterized in that the thickness of the carbon dioxide adsorption layer is 5 μm to 500 μm.
  7. In Article 1, A carbon dioxide adsorption membrane having a surface micro or nano structure formed thereon, characterized in that the mesh-shaped membrane having a micro or nano structure pattern formed on the surface comprises one or more types from the group consisting of polysulfone, polyethersulfone, polyacrylonitrile, and polyvinylidene fluoride.
  8. In Article 1, A carbon dioxide adsorption membrane having a surface micro or nano structure formed thereon, characterized in that the carbon dioxide adsorbent comprises one or more of the group consisting of a MOF comprising one or more of HKUST-1, MOF-74, or MIL-101; an amine comprising one or more of polyethyleneimine, tetraethylenepentamine, or polypropyleneimine; and carbon comprising one or more of activated carbon, graphene, or carbon nanotubes.
  9. A step of forming a micro or nanostructure pattern on the surface of a mesh-shaped membrane; and A method for manufacturing a carbon dioxide adsorption membrane having a surface micro or nano structure, characterized by comprising the step of forming a carbon dioxide adsorption layer containing a carbon dioxide adsorbent on the surface of a mesh-shaped membrane having the above-mentioned micro or nano structure pattern.
  10. In Article 9, In the step of forming a micro or nanostructure pattern on the surface of a mesh-shaped membrane, A method for manufacturing a carbon dioxide adsorption membrane having a surface micro or nano structure formed thereon, characterized by comprising one or more methods from the group consisting of a physical etching technique including one or more of oxygen plasma treatment or ion beam irradiation, a chemical etching technique including one or more of acid etching or base etching, a texturing technique including one or more of laser texturing or photolithography texturing, and a nanoparticle introduction technique including one or more of nanoparticle coating or nanoparticle complex formation, for forming the above-mentioned micro or nano structure pattern.
  11. In Article 9, In the step of forming the carbon dioxide adsorption layer, A method for manufacturing a carbon dioxide adsorption membrane having a surface micro or nano structure formed thereon, characterized by using a method comprising one or more selected from the group consisting of spray coating, dip coating, spin coating, CVD, PVD, and ALD to form a carbon dioxide adsorption layer.
  12. In Article 9, A method for manufacturing a carbon dioxide adsorption membrane having a surface micro or nano structure formed thereon, characterized in that the micro or nano structure formed on the surface comprises one or more types from the group consisting of an uneven structure and a dimple structure.
  13. In Article 9, A method for manufacturing a carbon dioxide adsorption membrane having a surface micro or nano structure formed thereon, characterized in that the surface roughness (Ra) of the mesh-shaped membrane having a micro or nano structure pattern formed on the surface is 0.1 to 10 μm.

Description

Carbon dioxide adsorption membrane with surface micro or nanostructure and method for manufacturing the same The present invention relates to a carbon dioxide adsorption membrane, and more specifically, to a carbon dioxide adsorption membrane having a micro or nano structure formed on its surface. Carbon dioxide ( CO2 ) emissions are one of the major causes of climate change, and technologies to effectively capture and remove it are important. Various capture and removal technologies are being developed to handle large amounts of CO2 generated in industrial processes, and among them, membrane technology is attracting attention for its high selectivity and efficiency. However, existing membrane technology has several problems. Conventional membranes have limitations in that their adsorption capacity for CO2 is insufficient, making efficient capture difficult. Furthermore, even if CO2 is selectively adsorbed, the structural stability or durability of the membrane is often poor, making long-term use difficult. These issues reduce the efficiency of CO2 capture and removal processes, leading to economic challenges. Therefore, as CO2 adsorption capacity improves, there is a growing need for new membrane technology that is structurally stable and highly durable, and continuous research in this area is required. FIG. 1 is a flowchart showing the steps of a method for manufacturing a carbon dioxide adsorption membrane having a surface micro or nano structure formed according to one embodiment of the present invention. Figure 2 is a microscope image of a dimple pattern. Figure 3 is a drawing in which no structure is formed on the surface. Figure 4 is a drawing showing a dimple structure formed on the surface. Figure 5 is a drawing showing an uneven structure formed at regular intervals on a surface. Figure 6 is a drawing in which an uneven structure is formed on a surface at different regular intervals. Figure 7 is an image of the fluid analysis result when no structure is formed on the surface. Figure 8 is an image of the fluid analysis result when an uneven structure is formed on the surface. Figure 9 is an image of the fluid analysis result when a dimple structure is formed on the surface. Figure 10 is an image of the fluid analysis result when a surface with a larger irregular structure than the irregular structure of Figure 8 is formed. Figure 11 is a microscope image of a bare membrane and a membrane with a microstructure formed thereon. Figure 12 is a microscopic image of MOF powder, which is a carbon dioxide adsorbent. Figure 13 shows the carbon dioxide adsorption performance results of a carbon dioxide adsorption membrane with a surface micro or nanostructure formed by coating a MOF carbon dioxide adsorbent. The present invention will be described below with reference to the attached drawings. However, the present invention may be implemented in various different forms and is therefore not limited to the embodiments described herein. Furthermore, in order to clearly explain the present invention in the drawings, parts unrelated to the explanation have been omitted, and similar parts throughout the specification have been given similar reference numerals. Throughout the specification, when it is stated that a part is "connected (connected, in contact, combined)" with another part, this includes not only cases where they are "directly connected," but also cases where they are "indirectly connected" with other members interposed between them. Furthermore, when it is stated that a part "includes" a certain component, this means that, unless specifically stated otherwise, it does not exclude other components but rather allows for the inclusion of additional components. The terms used herein are merely for describing specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as “comprising” or “having” are intended to indicate the presence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof. Embodiments of the present invention will be described in detail below with reference to the attached drawings. Conventional carbon dioxide adsorption membranes could not be free from the problem of poor carbon dioxide adsorption efficiency. To solve these problems, the present invention provides a carbon dioxide adsorption membrane having a surface micro or nano structure formed thereon, which improves carbon dioxide adsorption efficiency by improving the adsorption time of carbon dioxide by forming a surface structure, and a method for manufacturing the same. Hereinafter, the present invention will be described with reference to the drawings presented in this sp