Method for preparing porous graphene membrane and membrane prepared using same

• Main Authors: CUI QINGCHUN, PARK HYUNG GYU, HEIGHT, MURRAY
• Format: Patent
• Language: Chinese; English
• Published: 05.08.2022
• Subjects: ACCESSORIES; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; COMPOUNDS THEREOF; CRYSTAL GROWTH; DIFFUSION TREATMENT OF METALLIC MATERIAL; HUMAN NECESSITIES; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; INORGANIC CHEMISTRY; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; METALLURGY; NON-METALLIC ELEMENTS; OUTERWEAR; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE; PROTECTIVE GARMENTS; REFINING BY ZONE-MELTING OF MATERIAL; SEPARATION; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE; SINGLE-CRYSTAL-GROWTH; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSPORTING; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; WEARING APPAREL

A method for preparing a porous graphene layer (5) having a thickness of less than 100 nm, the method comprising the steps of: providing a catalytically active substrate (1) provided on a surface (3) thereof with a plurality of catalytically active-free domains (2) having dimensions substantially corresponding to the dimensions of pores (6) in the resulting porous graphene layer (5); performing chemical vapor deposition and forming a porous graphene layer (5) on the surface (3) of the catalytic activity substrate (1); wherein the catalytically active substrate (1) is a copper-nickel alloy substrate having a copper content in the range of 98 wt% to less than 99.96 wt% and a nickel content in the range of greater than 0.04 wt% to 2 wt%, the copper content and the nickel content being complementary to 100 wt% of the catalytically active substrate (1). 一种用于制备厚度小于100nm的多孔石墨烯层(5)的方法，所述方法包括以下步骤：提供催化活性基底(1)，所述催化活性基底(1)在其表面(3)上设置有多个无催化活性域(2)，所述多个无催化活性域(2)的尺寸基本上对应于所得多孔石墨烯层(5)中的孔(6)的尺寸；进行化学气相沉积并在催化活性基底(1)的表面(3)上形成多孔石墨烯层