236 results about "Covalent organic framework" patented technology

This invention discloses a covalent organic framework material for selective solid-phase adsorption and separation, its preparation method, and its applications. The material is prepared by polycondensation reaction of electron-deficient triazine rings with short-chain linkers such as hydrazine hydrate, forming a layered structure with a high specific surface area of ​​602 m² / g and a concentrated pore size of 2.0 nm to 3.0 nm. This structure exhibits high adsorption capacity (up to 1.0 mg / g), rapid adsorption kinetics, and excellent selectivity for PAHs in organic solutions through strong π-π interactions and pore confinement effects. The preparation process is simple and the conditions are mild. The material has good thermal stability (>300℃), and its performance retention rate is higher than 92% after 5 cycles. When applied to the solid-phase adsorption of PAHs in petroleum products such as lubricating oil and white oil, it effectively eliminates matrix interference, allowing direct analysis without complex purification steps after adsorption. This overcomes the limitations of traditional materials such as silica gel and activated carbon, which have weak adsorption capacity and require cumbersome post-treatment, providing a new high-performance adsorption material solution for the efficient detection of trace PAHs in petroleum products.

The application belongs to the technical field of structural energy, and particularly relates to a structural integrated energy skin with hierarchical pore limited hybrid superstructure. The energy skin comprises: a two-dimensional covalent organic framework film as a continuous phase host framework, a photoelectric active guest component located in the pore structure of the host framework and penetrating through the thickness direction of the film, a molecular level interface passivation layer introduced by a gate vapor pulse and discontinuously distributed on the host-guest heterojunction interface, and a charge selective contact structure. The host framework has a first pore structure for interface limitation and a second pore structure for guest transmission. During preparation, the guest is generated in situ in a limited space by gas phase permeation, and its grain boundary fusion is induced by passivation and flash solidification in cooperation with the gate vapor pulse. The application constructs a trinity physical constraint architecture of host-guest-interface, effectively inhibits ion migration and non-radiative recombination, realizes high stability output in a complex environment, and is suitable for mobile carrier load bearing skin.

This invention provides a covalent organic framework hybrid matrix membrane, its in-situ growth method, and its application in ion separation. The method includes: dissolving cellulose derivatives, aldehyde monomers of covalent organic frameworks, and amine monomers of covalent organic frameworks in an organic solvent to obtain a first solution, a second solution, and a third solution; mixing acetic acid solution with the first, second, and third solutions to obtain a homogeneous casting solution; and drop-coating the homogeneous casting solution for in-situ growth. This invention constructs a CD@COF hybrid matrix membrane based on a cellulose derivative matrix and a low-loading covalent organic framework filler using an in-situ growth method. The prepared hybrid matrix membrane exhibits good interfacial compatibility between the matrix and the filler. The above-mentioned hybrid matrix membrane preparation process is simple, possesses good mechanical strength and high scalability, and demonstrates high ion flux and excellent ion selectivity for separating monovalent and divalent ions. It has broad application prospects in wastewater resource treatment, lithium extraction from salt lakes, and energy storage.

This invention provides an application of ion emitters based on covalent organic framework materials in thermal ionization mass spectrometry (TIEMS), specifically for improving the ionization efficiency of uranium during TIEMS measurements. Compared to conventional dual-band source modes in TIEMS, and ionization enhancement techniques such as graphite methods, benzene vapor carburizing methods, and graphene oxide methods, this invention significantly improves uranium ionization efficiency, facilitating the accurate measurement of ultra-trace and low-abundance uranium isotopes.

This invention relates to the fields of brachytherapy and radiosensitization, specifically providing a... 125 I-nano implantable particles, their preparation methods, and applications. 125 The 1-nanometer implanted particles have a core-shell structure, consisting of a particle core and particles adsorbed on the outer surface of the particle core. 125 I and the particles encapsulated in the nucleus and 125 The outer shell of the I-type photosensitizer is a covalent organic framework. This invention... 125 The core of the I-nanometer implanted particle is used to enhance the energy deposition of gamma rays and X-rays, generating more hydroxyl radicals; the shell containing a type I photosensitizer is used to absorb the energy of Auger electrons and internal conversion electrons and excite the photosensitizer to generate singlet oxygen, effectively improving the response to... 125 The efficiency of I decay energy utilization. 125 I-nano implanted particles, combined with internal radiation therapy and radiodynamic therapy, destroy tumor cell DNA and cell membranes, enhance tumor killing and induce immunogenic cell death, thereby activating anti-tumor immunity and inducing remote effects.

This invention discloses a method for preparing a covalent organic framework-cellulose composite aerogel and its application, belonging to the field of porous functional materials and solar energy utilization technology. The composite aerogel uses cellulose nanofibers as a framework, constructs a cross-linked network through γ-glycidoxypropyltrimethoxysilane and polyethyleneimine, and introduces a covalent organic framework material as a functional component. Through directional freeze-drying and lyophilization, an aerogel material with a directional continuous pore structure is formed. The covalent organic framework material has tunable molecular structure and optical properties, enabling the composite aerogel to simultaneously possess light absorption, photothermal conversion, and photocatalytic reaction activity. The directional pore structure facilitates rapid water transport and vapor escape, and inhibits salt accumulation, thereby improving the solar interfacial evaporation efficiency. By controlling the structural type and loading content of the covalent organic framework, the synergistic process of photothermal evaporation and photocatalytic hydrogen peroxide production can be achieved, improving the overall solar energy utilization efficiency.

This invention belongs to the field of organic framework materials technology, specifically disclosing a highly conductive covalent organic framework material containing antiaromatic units and its preparation method. The material is prepared by reacting 2,5-dihydroxy-1,4-benzoquinone (DHBQ) with an o-diamine derivative to form a covalent organic framework (COF) material with a dihydrotetraazapyronine fusion structure. The invention also discloses the applications of this material in electrocatalysis, charge storage, chemiluminescence sensing, displays, and electronic devices.

This invention provides a method for preparing a hydrogen-bonded crosslinked covalent organic framework (COF) composite membrane and its application in gas separation, belonging to the field of gas separation membranes. The composite membrane is composed of COF and a polyhydroxy polymer: first, COF nanosheets are prepared; then, they are mixed with hydroxy polymers, such as carboxymethyl cellulose, polyethylene glycol, and polyvinyl alcohol, to obtain an assembly dispersion. Using a vacuum-assisted self-assembly method, this dispersion is filtered onto the surface of a polymeric ultrafiltration membrane, and after drying, the hydrogen-bonded crosslinked covalent organic framework composite membrane is obtained. The raw materials for the membrane material are readily available, and the method is simple. Due to the chemical similarity between the hydroxy polymer and the COF nanosheets, the assembly interface is more uniform, thereby macroscopically improving the mechanical strength of the composite material. Because the hydroxy polymer weaves the COF nanosheets, the pore size of the COF is reduced due to the shielding effect. The composite membrane, used for H2 / CO2 separation, exhibits high selectivity and operational stability, and has good application prospects in the field of hydrogen separation.

This invention discloses a magnetic covalent organic framework composite material modified with nucleic acid aptamers, its preparation method, and its applications. The composite material uses magnetic iron oxide microspheres as the core, with the surface of the core coated with a shell of covalent organic framework material. Nucleic acid aptamers capable of specifically recognizing tetracycline antibiotics are stably assembled onto the shell surface through non-covalent interactions. This invention fully utilizes the large specific surface area and electron-rich framework of magnetic covalent organic framework materials as efficient carriers for nucleic acid aptamers, effectively overcoming the shortcomings of traditional adsorption materials in terms of poor selectivity and limited adsorption capacity in complex matrices, while avoiding cumbersome covalent modification processes. This composite material exhibits excellent adsorption capacity and superior selectivity for tetracycline antibiotics, and is particularly suitable for rapid and efficient magnetic solid-phase extraction of trace tetracycline antibiotics in complex animal-derived food matrices, significantly improving the detection sensitivity and accuracy of subsequent instrumental analysis.

The embodiment of the present application provides a Fe3O4@COF electrochemical sensor based on a covalent organic framework, a preparation method and application, the electrochemical sensor comprises: a base electrode which is surface-modified with a solid film; the solid film is a Fe3O4@COF composite material; the Fe3O4@COF composite material comprises: a core formed by a porous structure of Fe3O4 and a COF shell layer attached to the surface of the core; the COF shell layer is a covalent organic framework layer formed by copolymerization of aromatic aldehyde compounds and polyamino aromatic compounds. The Fe3O4@COF electrochemical sensor based on the covalent organic framework, the preparation method and the application can detect quinolone antibiotic molecules such as norfloxacin, and the detection limit can reach 1.927*10 ‑ 13 mol / L; and can be widely applied to the detection of quinolone antibiotics such as norfloxacin in milk and environmental water samples.

This invention discloses a hydrazone-linked fluorine-substituted covalent organic framework material, its preparation method, and its applications, belonging to the field of semiconductor photocatalysis technology. The material is synthesized by hydrazone condensation of 1,3,5-trifluoro-2,4,6-tris(4-formylphenyl)benzene and terephthalohydrazide, denoted as F-TPDH-COF. A one-step solvothermal synthesis is employed, resulting in a mild, environmentally friendly, low-cost, and easily scalable process. The material obtained by this invention utilizes hydrazone bonds to achieve proton enrichment in acidic media, and fluorine atoms regulate the electronic structure to improve charge separation efficiency. Under pH=2 conditions, the photocatalytic hydrogen peroxide production rate reaches as high as 5825.2 μmolg. ‑1 h ‑1 Its activity and stability are significantly better than most existing COF photocatalytic materials, and it can be used for efficient photocatalytic preparation of hydrogen peroxide in acidic systems, showing good prospects for industrialization.

The application discloses an olefinic COF catalyst, a preparation method thereof and application of the catalyst in photocatalytic production of hydrogen peroxide. The catalyst is prepared from 2,2',6,6'-tetramethyl-4,4'-bipyridine and an aromatic aldehyde monomer containing two aldehyde groups through a Knoevenagel condensation reaction under a solvent-free condition, and has an olefinic covalent organic framework structure. The preparation method of the application does not need to add any solvent, is simple in operation, mild in reaction condition and easy to scale up, and has significant commercialization potential. The prepared catalyst has a highly conjugated two-dimensional layered porous structure, excellent light absorption capacity and light-generated carrier separation efficiency. When the catalyst is applied to photocatalytic decomposition of water to produce hydrogen peroxide, the catalyst exhibits excellent catalytic activity, and the hydrogen peroxide production rate can reach 1125 μM h ‑1 The application provides a new scheme of green, efficient and industrialized prospect for solving the problems of high energy consumption and high pollution of the traditional hydrogen peroxide production method.

This invention provides a covalent organic material for adsorbing zearalenones (ZENs), its preparation, and its application. The covalent organic material comprises: a matrix layer formed of melamine sponge; and an adsorption layer covering at least a portion of the surface of the matrix layer, the adsorption layer being composed of a covalent organic framework structure having repeating units as shown in Formula I. This covalent organic material can efficiently and specifically adsorb zearalenones and exhibits good hydrophobicity and thermal stability, making it suitable for the rapid and accurate enrichment and detection of ZENs in complex matrix foods.

This invention discloses an electrochromic covalent organic framework material and its application in smart windows, belonging to the technical field of electrochromic functional materials. The material possesses a gradient-tunable band structure and redox potential. The preparation method involves mixing a monomer containing tris(4-aminophenyl)amine with monomers containing linker units with different numbers of nitrogen atoms and an organic solvent, ultrasonically dispersing the mixture, and then adding a catalyst to form a mixture. A cleaned ITO glass is immersed in the mixture. The mixture undergoes cryogenic degassing, followed by in-situ polymerization under heating conditions. After the reaction, the product is washed and dried to obtain an electrochromic COF film. This invention achieves a positive shift in the oxidation potential system and an expansion of the charge delocalization range through the modulation of the electronic structure of the linker units. The material exhibits high optical contrast, fast response, low driving voltage, and good cycling stability.

The disclosure belongs to a field of environmentally friendly new materials, specifically relating to a modified covalent organic framework for simultaneous adsorption of multiple heavy metal ions, along with its preparation method and applications. The preparation steps for the material are as follows. 1,3,5-tris(4-aminophenyl)benzene and 2,5-dihydroxyterephthalaldehyde are dissolved in a mixed solvent and allowed to stand and react at room temperature to obtain a mixed solution. Scandium trifluoromethanesulfonate is added to the obtained mixed solution, and allowed to stand and react at the room temperature. After completion of the reaction, the insoluble matter is separated from the reaction solution, and the insoluble matter is washed and dried to obtain a covalent organic framework substrate. A neutral solution is used to perform an ultrasonic modification treatment on the covalent organic framework substrate prepared, and then the modified substrate is washed and dried to obtain a modified covalent organic framework.

The application discloses a kind of laser-induced covalent organic framework crystal in-situ synthesis method and application.The method is prepared by aldehyde monomer, amine monomer, organic solvent and auxiliary agent composition precursor solution, using continuous wave laser focusing on solid-liquid interface to form localized photo-thermal microreactor, using local hotspot to drive precursor dynamic co-condensation, realize the in-situ nucleation and growth of COF crystal, and obtain purified product after treatment.The application can accurately control the nucleation site, morphology, size and patterned structure of COF crystal by adjusting laser power, exposure time and scanning rate and other parameters, and the prepared COF crystal has high crystallinity and uniform element distribution, and can realize sub-micron scale patterned integration.The method does not require high temperature and high pressure and catalyst, and the reaction time is shortened to seconds, solving the defects of poor controllability, slow reaction and difficulty in micro-nano preparation of traditional synthesis method, and the product can be widely used in integrated photonics devices, micro-nano electronic devices and other fields.

The present invention provides a method for synthesis of a novel covalent organic framework material having a 12-crown-4-ether group based on chiral separation. The novel covalent organic framework material having a 12-crown-4-ether group is prepared in the present invention, and CCOF-HTOD-1 can be used as a fluorescent probe for achieving chiral separation of different chiral drugs (L-PGL, D-PGL, L-PAL, D-TPL, L-TPL and D-TPL). The CCOF-HTOD-1 prepared in the present invention not only has advantages such as a simple preparation method, suitability for large-scale production, a uniform structure for the prepared novel 12-crown-4-ether covalent organic framework material, ease of dispersion, and excellent CD optical activity, but also exhibits excellent performance in detection of various chiral drugs, including high detection efficiency, high selectivity, and recycling. As a result, common problems in chiral drugs, such as difficult separation and low detection efficiency, can be solved thereby.

The present application relates to the technical field of porphyrin-based covalent organic framework material preparation, in particular to a mild preparation method of acetaldehyde-based porphyrin covalent organic framework and application thereof, which comprises the following steps: step one: dispersing ligand 2', 5'-bis((ethyl sulfide) methyl)-[1,1':4',1''-triphenyl]-4,4''-diamine in acetonitrile solution to obtain solution A, and dissolving acetaldehyde-based porphyrin in dichloromethane to obtain solution B; step two: mixing solution A and solution B; step three: adding ferric chloride and acetic acid as catalysts to react under mild conditions to obtain acetaldehyde-based porphyrin covalent organic framework material, which has excellent gaseous iodine adsorption performance. The synthesis method provided by the present application has mild conditions, simplifies the high-temperature time-consuming shortcomings of traditional porphyrin-based covalent organic framework material synthesis, and realizes the synthesis of special ligand covalent organic framework.

The application discloses a pressure-responsive high-conjugated covalent organic framework self-lubricating nanosheet and application thereof, and belongs to the technical field of high-end equipment lubricating materials. The preparation method of the self-lubricating nanosheet is as follows: S1, dispersing 1,3,5-tri(4-aminophenyl)benzene and 2,5-dimethoxy-p-phenylenedimethanal in 1,4-dioxane to obtain a precursor solution; S2, adding glacial acetic acid into the precursor solution, heating to 70-90 DEG C, and then keeping the temperature constant for 1-2 hours, and then heating to 120-140 DEG C, and keeping the temperature constant for 12-24 hours to obtain an orange product; the orange product is a high-conjugated covalent organic framework self-lubricating nanosheet (TADM); S3, mixing the TADM with lubricating oil and vacuum impregnating to form TADM@oil nanosheets. The TADM@oil nanosheets are dispersed in a polymer matrix to obtain a polymer composite material; and the polymer composite material is coated on a metal substrate to form a self-lubricating coating. The coating has the functions of solid lubrication and pressure-responsive intelligent release of lubricating oil, and the stability and service life of the lubricating system are improved.

a kind of sp 2 C covalent organic framework functionalized silicon-based chromatographic stationary phases, their preparation methods, and applications. Preparation steps: (1) Preparation of SiO2-NH2: Aminated activated spherical silica particles are prepared using an amino-containing silane coupling agent; (2) SiO2@sp 2 C-COF preparation: Using TMT and TFPT as raw materials, sp was obtained through a Schiff base-mediated aldehyde-alcohol condensation reaction initiated by a self-assembled monolayer auxiliary surface. 2 A C covalent organic framework is loaded onto the surface of a silica matrix via C=N bonds. 2 C-COF possesses an in-plane π-conjugated, highly ordered, and robust framework structure. Its unique hydrophilic covalent triazine groups and hydrophobic benzene rings can provide various interactions such as hydrophobicity, π-π stacking, hydrogen bonding, and hydrophilicity. This enables the stationary relative shape-restricted and geometric isomers to exhibit special selectivity and separation capabilities, overcoming the instability of common imine-bonded COFs in liquid chromatography (HPLC) and the limited selectivity of relatively shape-restricted and geometric isomers stationed in traditional bonded silica gel.

This invention relates to the field of new energy materials and fuel cell technology, specifically to a method for preparing a SPEEK / COF-PE composite proton exchange membrane material and its application. By combining sulfonated polyether ether ketone (PE) with a covalent organic framework material (COF-PE), a multi-level proton conduction channel and hydrogen bond network are constructed. This approach combines the film-forming properties of SPEEK with the pore structure characteristics of COF-PE, resulting in a significant simultaneous improvement in the material's proton conductivity, mechanical strength, and chemical stability. When applied to fuel cell proton conduction, this material exhibits high proton conductivity, high tensile strength, and strong chemical stability. This invention addresses the performance shortcomings of traditional non-fluorinated proton exchange membranes, overcomes the environmental and cost limitations of fluorinated proton exchange membranes, and achieves a balance between proton conduction performance and overall stability. It has practical significance in promoting the industrialization of non-fluorinated proton exchange membranes and adapting them for hydrogen fuel cell applications in new energy vehicles, portable power supplies, and other scenarios.

The present application relates to the technical field of porous polymer materials, and particularly relates to a covalent organic framework material with different flatness, a preparation method and application thereof. The method comprises the following steps: S10, preparing a first monomer through a coupling reaction; S20, mixing the first monomer, a second monomer, a catalyst and a solvent to perform a condensation reaction, so as to obtain the covalent organic framework material, wherein the condensation reaction is performed at a temperature of 60-180 DEG C, the first monomer comprises one or more of formulae 1-8, and the covalent organic framework material is purified; and S30, performing acidification or methylation treatment on the purified covalent organic framework material. Thus, the covalent organic framework material with different flatness prepared by the present application has a high conjugation degree, effectively enhances light absorption capacity, promotes separation and transfer of photo-generated carriers, and exhibits good light response characteristics and photocatalytic performance.

The application discloses a kind of single crystal covalent organic framework materials, the structural formula of single crystal covalent organic framework material is:;Single crystal covalent organic framework material of the application has the advantages such as high adsorption capacity, stable selectivity, low regeneration energy consumption and excellent cycle performance, provides a new adsorption separation material system for propylene low-energy consumption purification;The adsorption capacity of C3H4 and C3H8 is significantly higher than C3H6 under normal temperature and pressure, so as to realize the one-step separation and purification of propylene in C3H4 / C3H6 / C3H8 ternary mixed gas, and polymerization grade propylene can be directly obtained.

This invention relates to the field of water treatment membrane technology, and more particularly to a reverse osmosis membrane, its preparation method, and its application. The reverse osmosis membrane comprises a nonwoven fabric layer, a support layer, and a polyamide separation layer sequentially laminated together; the polyamide separation layer is formed by an interfacial polymerization reaction of an aqueous phase solution and an oil phase solution on the support layer; the aqueous phase solution comprises amine monomers, a eutectic solvent, and a covalent organic framework material; the oil phase solution comprises acyl chloride monomers. The reverse osmosis membrane provided by this invention exhibits superior antifouling, alkali resistance, and oxidation resistance.

The application discloses a kind of synergistic antitumor porphyrin-based covalent organic framework heterojunction materials and preparation method thereof, belong to biological medicine technical field. 5,10,15,20-tetra (4-aminobenzene) -21H,23H-porphyrin and 2,5-divinyl benzene formaldehyde are added to organic solvent to carry out solvothermal reaction, and porphyrin-based covalent organic framework (pCOF) is obtained;pCOF is mixed with 1,2-ethanedithiol and heated to obtain thiolated modified pCOF;Thiolated modified pCOF is stirred with glutathione aqueous solution ultrasonically, then tetra-chloroauric acid is added to carry out reaction, and synergistic antitumor porphyrin-based covalent organic framework confined gold nanocluster heterojunction material, recorded as Au@pCOF, is obtained.The Au@pCOF prepared in the application can be used as a kind of biocompatible antitumor therapeutic agent, under the irradiation of 808 nm near-infrared light, active oxygen is efficiently generated and heat is released, photothermal and photodynamic synergistic enhancement is realized, tumor cells are significantly killed, and is used for space-time integration synergistic antitumor therapy.

A functionalized covalent organic framework material containing dimethylamino and its preparation method are disclosed. This invention relates to a C2-type aldehyde monomer containing a dimethylamino functional group and a functionalized covalent organic framework material containing dimethylamino and its preparation method. The purpose of this invention is to solve the problems of insufficient functionalized monomers, easy pore blockage leading to decreased specific surface area, and insufficient selectivity and pH responsiveness in existing COF materials used for the adsorption and separation of biomolecules such as peptides. The method includes: 1. Weighing; 2. Anhydrous and anaerobic reaction; 3. Filtration; 4. Column chromatography purification; 5. Drying; 6. Weighing; 7. Anhydrous and anaerobic reaction; 8. Washing; 9. Deep washing with a Soxhlet extractor; 10. Drying and grinding. The invention innovatively introduces a new monomer with a basic recognition site, and through a "bottom-up" strategy, directly and uniformly introduces the dimethylamino functional group into the COF framework. The material exhibits good crystallinity and a high specific surface area (up to 2481 m²). 2 ( / g), and has significant pH responsiveness.

The application discloses a kind of methods for constructing electrochemical immunosensor for detecting apolipoprotein A4, comprising: (1) nitrogen-doped graphene and polyethyleneimine are fully stirred in solvent Composite, then add bipyridine functionalized covalent organic framework material and fully stir Composite, obtain NG-PEI-COF composite material;With bipyridine functionalized covalent organic framework material as carrier, gold nanoparticles, apolipoprotein A4 antibody and toluidine blue are loaded in sequence, to obtain tracer probe;(2) on electrode NG-PEI-COF composite material, gold nanoparticles, apolipoprotein A4 and tracer probe are modified in sequence, to obtain the electrochemical immunosensor of the application.The electrochemical immunosensor constructed by the method shows excellent detection performance for apolipoprotein A4, the marker of depression, good reproducibility and stability, and shows good anti-interference performance for a variety of other markers of depression, can be accurately determined in 0.01~300 ng / mL linear range, detection limit is as low as 2.16 pg / mL, and can be applied to serum sample.

The application discloses a carvacol-loaded covalent organic framework composite photocatalyst and a preparation method and application thereof, and belongs to the technical field of photocatalysis. The catalyst is prepared by introducing carvacol into a covalent organic framework through an impregnation method. Under visible light irradiation, the composite catalyst has a hydrogen peroxide synthesis yield of up to 7681 μmol·g ‑1 ·h ‑1 in pure water, and can directly utilize in-situ generated hydrogen peroxide to achieve efficient inactivation of escherichia coli in water bodies without adding any exogenous iron ions, and can completely kill in 75 min. The carvacol is first compounded with the covalent organic framework as an electron transfer medium in the application, which significantly improves the photogenerated carrier separation efficiency and photocatalytic performance, and has the advantages of high efficiency, greenness and simple process, and provides a novel integrated solution for photocatalytic preparation of hydrogen peroxide and water body disinfection.

The application discloses a hybrid hollow fiber oxygenation membrane and a preparation method thereof. The hybrid hollow fiber oxygenation membrane comprises the following raw materials: a metal organic molecular sieve material and a polyolefin; wherein the metal organic molecular sieve material comprises one or more combinations of a metal organic framework material, a metal covalent organic framework material and a hydrogen bond organic framework material. In the hybrid hollow fiber oxygenation membrane, the metal organic molecular sieve material is dispersed in the hybrid, the metal organic molecular sieve material strengthens the dissolution-diffusion process of carbon dioxide molecules through the membrane and the rapid conversion process between bicarbonate and carbon dioxide; the good interaction and compatibility between the metal organic molecular sieve nanosheet and the polyolefin enhance the free volume of the membrane, and reduce the transfer resistance of carbon dioxide in the membrane; and the multiple action mechanisms are coordinated, so that the prepared hybrid hollow fiber oxygenation membrane has high carbon dioxide transmission performance, and the gas permeability of the oxygenation membrane, especially the carbon dioxide permeability, is significantly improved.