305 results about "Large pore size" patented technology

The invention discloses a silicon-carbon composite material and a preparation method thereof. The composite material is composed of porous hard carbon, inorganic lithium salt doped with the porous hard carbon and a porous metal frame as a matrix, nano silicon deposited in pores of the matrix, and an amorphous carbon composite material coated on the surface. The preparation method comprises the following steps: uniformly mixing resin, inorganic lithium salt and a porous metal framework, and carrying out hydrothermal reaction, activation and secondary carbonization to obtain a porous carbon complex; and depositing nano silicon and coating the nano silicon with an organic lithium salt through a vapor deposition method to obtain the silicon-carbon composite material. According to the obtained material, expansion is reduced through large-aperture deposited nanometer silicon of the metal frame structure, the defects are reduced through the inorganic lithium salt of the inner core and the organic lithium salt of the outer shell, the ion diffusion rate is increased, and the first efficiency and the rate performance are improved.

The invention discloses a waterproof long-lasting oil-control gel composition and a preparation method thereof, and belongs to the technical field of cosmetics. The composition comprises 4-6 parts of an oil absorption compound A, 9-13 parts of an oil absorption compound B and 70-95 parts of a gel matrix, wherein the oil absorption compound A is prepared from mesoporous silica and poloxamer 407, and the aperture of the oil absorption compound A is 5-10 nm; the oil absorption compound B is prepared from polymethyl methacrylate microspheres, isododecane and polyglycerol-3 diisostearate, and the pore diameter of the oil absorption compound B is 150 to 300 nm. According to the invention, through dual mechanisms of temperature response and volatilization driving, a dynamic gradient structure of bottom layer small aperture-surface layer large aperture is formed at skin temperature, and directional migration of grease is realized; meanwhile, the surface property transformation of the material after oil absorption is creatively utilized, a hydrophobic membrane is formed on the surface of the polymethyl methacrylate microsphere, a self-enhanced waterproof barrier is constructed, the unique effect that the more oil is absorbed, the more water is resisted is achieved, the problem of makeup removal caused by sebum and sweat can be effectively solved, and the makeup lasting time is remarkably prolonged.

The invention provides a preparation method for preparing porous carbon based on an aerogel method, the porous carbon and application of the porous carbon, and belongs to the technical field of porous carbon material preparation. The preparation method comprises the following steps: mixing polyhydroxy phenol, aromatic aldehyde, acrylamide, graphene oxide and lithium salt according to a mass ratio of 100: (50-200): (5-30): (1-5): (1-5), carrying out hydrothermal reaction at 100-200 DEG C for 1-6 hours, and freeze-drying at-40 DEG C to obtain a hydrogel precursor; and carbonizing the precursor in organic heteroatom gas at 500-800 DEG C, mixing the intermediate with alkali according to the ratio of 100: (100-500), activating at 900-1100 DEG C, pickling and drying to obtain the porous carbon. The conductivity of the product is improved by means of graphene, lithium salt and heteroatoms, and the aerogel method obtains large aperture, has the characteristics of low impedance, high first efficiency and small charge-discharge expansion, and can be efficiently applied to silicon-carbon materials.

The invention provides an aerogel film with a continuous gradient pore structure and a preparation method and application thereof.The preparation method comprises the steps that a pre-crosslinking solution containing a polymer nanofiber suspension, a sodium alginate solution, a polyethyleneimine aqueous solution and a crosslinking agent is sprayed to a temperature-conducting substrate with the initial temperature ranging from-20 DEG C to-15 DEG C at high pressure; and freeze-drying to obtain the aerogel film with the continuous gradient pore structure. The aperture of the aerogel film is gradually increased from bottom to top, and the range of the aperture is mainly 1-110 [mu] m. The aerogel film is placed in a filter membrane clamp, so that a solution to be filtered passes through the aerogel film according to the sequence of'macropore-mesopore-micropore ', the aerogel film is used for intercepting and recycling particles with different sizes, such as micro-plastics, and high water flux and high rejection rate are both considered. The pore size of the aerogel film can be changed by adjusting the temperature of the temperature-conducting substrate; the prepared aerogel film improves the trade-off effect in the existing filtration separation technology, and has a wide market prospect.

The invention discloses an asymmetric sulfone polymer nanoscale filter membrane as well as a preparation method and application thereof, and belongs to the technical field of membrane materials. The filter membrane comprises a filter membrane main body, the filter membrane main body comprises a pre-filtering layer and a separation layer for intercepting impurities, the average thickness of the separation layer is 0.5-12 microns, and the porosity is 40-80%; the ratio of the maximum aperture of the PMI to the minimum aperture of the PMI of the filter membrane is 1.2-3.5, the retention rate of the filter membrane to 2nm colloidal gold is greater than or equal to 90%, and the ratio of the standard deviation of the area value of the brightness displacement spectrum to the average value of the area value is 0.01-2 when the filter membrane with the retention rate of 2nm colloidal gold is subjected to section brightness measurement; the separation layer structure which is thin and uniform in thickness and the proper pore size and pore size distribution of the filter membrane are combined with high porosity, so that the filter membrane can be ensured to have high flux and high cleanliness while having high interception efficiency, and the filter membrane is suitable for nanoscale purification of a liquid treatment agent used in a semiconductor wet process.

The invention discloses a hydrogen-fluorine atom doped graphdiyne material and a preparation method thereof, and relates to the technical field of carbon materials. According to the method, halogenated aromatic hydrocarbon and an alkynyl compound are taken as raw materials, a palladium catalyst and a copper catalyst are taken as a catalytic system, and an acetylenic bond of the alkynyl compound and the halogenated aromatic hydrocarbon are subjected to a Sonogashira coupling reaction to obtain the hydrogen-fluorine-doped graphite alkynyl material. The graphdiyne material provided by the invention has a large pore diameter, multiple active sites and high thermal stability and chemical stability, so that the hydrofluorine-doped graphdiyne material has excellent electrochemical energy storage property, shows reversible capacity of 1155mAh g <-1 > under 0.05 Ag <-1 > when being used as a negative electrode of a lithium ion battery, and can be used as a negative electrode of the lithium ion battery. And the density is almost 3 times that of a commercial graphite negative electrode material (300-350mAh g <-1 >). The application of the graphdiyne material in the field of electrochemical energy storage is obviously promoted.

The application discloses a biomass-based nitrogen-doped carbon-carbide molybdenum composite catalyst and a preparation method and application thereof, and is characterized in that: a widely-sourced biomass, especially agricultural biomass waste, is used as a carbon and nitrogen source, ammonium molybdate is used as a molybdenum source, and a nitrogen-doped carbon-carbide molybdenum composite catalyst is prepared through one-step pyrolysis under an ammonia atmosphere; the catalyst is mesoporous nitrogen-doped carbon loaded with pure beta-phase carbide molybdenum, has the characteristics of a large pore size, high dispersion of beta-phase carbide molybdenum and the like, and has good thermal stability; the catalyst can efficiently denitrogenate quinoline and directively convert the quinoline, and high-selectivity aromatic hydrocarbon products can be obtained; the conversion rate is not less than 99%, the denitrogenation rate is not less than 99%, the selectivity of aromatic compounds is not less than 86%, and the catalyst has the characteristics of low hydrogen consumption due to the avoidance of hydrogen saturation reaction.

Proppant particles formed from slurry droplets and methods of use are disclosed herein. The proppant particles can include a sintered ceramic material and can have a size of about 80 mesh to about 10 mesh and an average largest pore size of less than about 20 microns. The methods of use can include injecting a hydraulic fluid into a subterranean formation at a rate and pressure sufficient to open a fracture therein and injecting a fluid containing a proppant particle into the fracture, the proppant particle including a sintered ceramic material, a size of about 80 mesh to about 10 mesh, and an average largest pore size of less than about 20 microns.

The application discloses a kind of linear cutting continuous processing methods of seat body large aperture parallel group hole, belong to mechanical manufacturing technical field.This method is first with seat body A face as reference, planing, planing seat body shape and concave surface to drawing size;Again, workpiece is once clamped and aligned, and linear cutting molybdenum wire is used along preset trajectory to continuously cut, and all large aperture through hole is simultaneously processed, and 45° chamfer bevel is reserved at cutting place;Finally, intermittent welding is used to cutting seam, and workpiece temperature is strictly controlled not to exceed 80 DEG C to prevent thermal deformation, and after welding, weld is ground flat to make surface flush with concave surface.The application is characterized by linear cutting without mechanical cutting force, solves the problem that tool is easily appeared in traditional boring machine processing, through hole taper is big, parallelism is poor, effectively guarantees the size and shape accuracy of through hole.Workpiece is only single clamping, and it is free from dependence on high-skilled operators, processing efficiency and product consistency are significantly improved, and it is suitable for batch processing of large-size seat body parallel deep hole of 45 steel.

The invention discloses a catalytic slurry oil hydrogenation catalyst and a preparation method thereof. The catalyst comprises an alumina carrier containing an auxiliary agent, MoO3 and CoO, the carrier has bimodal pore size distribution, the smaller pore size is intensively distributed at 10-40nm, the pore volume of pore channels with the pore size of 10-40nm accounts for 20%-40% of the total pore volume, the larger pore size is intensively distributed at 150-400nm, and the pore volume of pore channels with the pore size of 150-400nm accounts for 30%-50% of the total pore volume. The catalyst disclosed by the invention is arranged between a hydrogenation protective agent and a hydrogenation desulfurizing agent in a catalytic cracking oil slurry hydrogenation reactor to play a role of connecting the previous part and the next part, so that primary removal of sulfur impurities in catalytic cracking oil slurry is realized, more deposits such as carbon deposits can be accommodated, and the running period of a device is prolonged.

The present application provides an ultra-high molecular weight polyolefin separator comprising ultra-high molecular weight polyethylene, the ultra-high molecular weight polyethylene having an average molecular weight of ≥ 1 million, wherein the ultra-high molecular weight polyolefin separator has a median pore size of 0.04 μm to 1 μm, a maximum pore size not exceeding 1.2 μm, and a puncture strength of ≥ 50 gf. The present application also provides a method for producing the ultra-high molecular weight polyolefin separator, which is safer than conventional nonwoven fabric separators and has higher ionic conductivity and a larger median pore size, thereby solving the problem that conventional nonwoven fabric separators in lithium batteries have high lithium ion permeability but are very dangerous and prone to short-circuiting the battery.

The invention discloses a pole piece. The pole piece has a large aperture size, uniform pores with relatively large sizes are formed in a slurry layer of the pole piece through a salt template method, and the defect that the pores formed by a gas pore-forming agent are too small is overcome; meanwhile, the performance of the pole piece is improved. A battery cell prepared from the pole piece disclosed by the invention can give consideration to both high volume energy density and good constant-current charging ratio.

The application discloses a kind of polymer porous membrane, its preparation method and application in turbidity removal pre-filtering, belong to the technical field of porous membrane preparation.Its technical scheme includes: when the non-solvent phase separation of film-forming polymer solution occurs and the separation layer is formed on the outer surface of polymer membrane, simultaneously, water-soluble coating layer polymer solution is coated on the surface of separation layer, to obtain polymer porous membrane;Film-forming polymer solution uses polysulfone polymer as film-forming base material, uses water-soluble chloride as porogen, uses nitrogen-containing organic matter as solvent;Coating layer polymer solution has porogen effect, and viscosity is 200-1000 mPa·s.The application is applied to turbidity removal pre-filtering, solves the technical problems that existing non-solvent phase separation technology is difficult to obtain large aperture, surface opening rate is high and easy to appear finger-shaped hole, has the characteristics of large aperture, surface opening rate is high, cross section is sponge hole.

This invention discloses a copper-based catalyst supported on macroporous alumina, its preparation, and its application. The macroporous alumina-supported copper-based catalyst comprises a macroporous alumina support and copper oxide and lanthanum oxide supported on its surface. The macroporous alumina-supported copper-based catalyst is particulate with a specific surface area of ​​250-500 μm. 2 / g, pore volume 1.0~2.0 cm³ 3 The copper-based catalyst supported on macroporous alumina has an average pore size of 16-30 nm. The content of each component in the catalyst, expressed as a mass percentage, is as follows: macroporous alumina support 79%-98.9%, copper oxide 0.1%-6%, and lanthanum oxide 1%-15%. The macroporous alumina-supported copper-based catalyst of this invention exhibits high catalytic activity and selectivity for higher alcohols in the ethanol-to-higher alcohol reaction, particularly showing higher selectivity for C6-C10 fatty alcohols.

This invention discloses a method for hydrotreating catalytic cracking slurry. A fixed-bed hydrotreating process is employed, comprising: in the presence of hydrogen, the catalytic cracking slurry sequentially contacts a hydrotreating protectant, a hydrotreating transition catalyst, and a hydrodesulfurization catalyst to undergo a hydrotreating reaction, yielding hydrotreated oil. The hydrotreating protectant comprises an alumina support with a most probable pore size of 40–100 nm, molybdenum oxide, and cobalt oxide. The hydrotreating transition catalyst comprises an alumina support containing additives and MoO3 and CoO. The support has a bimodal pore size distribution, with smaller pores concentrated in the 10–40 nm range and larger pores concentrated in the 150–400 nm range. This method eliminates the diffusion resistance during the adsorption and reaction of large molecules on the catalyst surface during the hydrotreating of catalytic cracking slurry, increases the capacity for more deposits such as coke, extends the operating cycle of the unit, and facilitates hydrodesulfurization and other reactions. It also increases the content of tricyclic and tetracyclic aromatics in the hydrotreated oil, making it a high-quality feedstock for needle coke production.

The invention discloses a coal mine energy-saving unpowered drainage device and method, and relates to the technical field of coal mine energy-saving equipment, the coal mine energy-saving unpowered drainage device is installed in a large-aperture drill hole with the diameter larger than or equal to 350 mm, the coal mine energy-saving unpowered drainage device comprises a large-aperture main pipe connected with the large-aperture drill hole in a sealed mode, and an air chamber is formed between the top wall of the large-aperture main pipe and a water layer of the large-aperture drill hole; the top of the large-aperture main pipe is communicated with an air inlet valve, a pressure release valve and a drainage pipe, the air inlet valve and the pressure release valve are respectively communicated with the air chamber, and the bottom end of the drainage pipe penetrates through the large-aperture main pipe and extends to a position at least 1m below the liquid level of a water layer of the large-aperture drill hole. The drainage system can drain water without power, is more energy-saving, has no electrical equipment intervention, is more reliable in safety, stable and efficient in drainage capacity, longer in service life and simple and convenient to maintain.

This utility model relates to the field of laboratory wastewater treatment technology and discloses a laboratory wastewater discharge device with a filter anti-clogging structure, including a storage tank and a disassembly assembly. This laboratory wastewater discharge device with a filter anti-clogging structure, through the arrangement of a storage tank, connecting plate, first filter screen, second filter screen, and third filter screen, allows the wastewater to be filtered. First, the wastewater enters the filter tank through the feed hopper, then contacts the first filter screen. The larger pore size of the first filter screen initially intercepts larger impurities in the wastewater. Then, the smaller pore size of the second filter screen further filters out slightly smaller impurities. Finally, because the third filter screen has the smallest pore size, it intercepts even finer particles and colloidal substances in the wastewater, thereby filtering out solid impurities in the wastewater. This greatly improves the purity of the filtered wastewater, enabling the discharged wastewater to meet higher standards, reducing the load on subsequent wastewater treatment systems, and lowering the risk of environmental pollution.

The application discloses a kind of phosphoric acid group modified β-cyclodextrin-based polymer film microextraction coating material and its application.First, a kind of phosphoric acid group β-CD porous crosslinked polymer (DBP-β-BNCD) and its preparation method are provided.The DBP-β-BNCD has the advantages of large specific surface area, narrow pore size distribution, large pore volume, good thermal stability, etc., which is beneficial to the accessibility of adsorption sites.When adsorbing hydrophilic pollutants antibiotics, various adsorption mechanisms such as polarity interaction, hydrogen bond interaction and π-π interaction are introduced.Further, by using DBP-β-BNCD as a thin film solid phase microextraction coating material, a method combining TFME with high performance liquid chromatography-tandem mass spectrometry (HPLC-QqQ-MS) is established, and the results show that the coating material has great potential for the extraction of hydrophilic organic pollutants in the environment.

The application discloses a preparation method of a high-stability cellulose nanofluid film, and a product and application thereof, and belongs to the field of energy conversion and material science. The method comprises the following steps: adding modified cellulose into an ionic liquid to prepare a solution by heating; dropping and coating the solution onto the surface of a porous polymer film, and preparing a gel film by heating and vacuum treatment; and obtaining the nanofluid film after water soaking and drying of the gel film. The nanofluid film adopts an embedded structure, the cellulose layer is a small-pore structure, the porous polymer film is a large-pore structure, and the nanofluid film has etching and three-dimensional network channel structures. The preparation process is simple and the conditions are mild, the prepared film has excellent ion rapid selective transmission performance, acid-base stability and long-term operation stability, can efficiently convert salinity gradient energy into electric energy, and has a good application prospect in the field of salt-difference osmotic energy utilization.

A lithium secondary battery with reduced Hi-pot defects and improved capacity retention rate. According to one aspect of the present disclosure, a lithium secondary battery includes an anode, a cathode, and a separator interposed between the anode and the cathode. The anode includes a Si-based anode active material. The separator includes a separator substrate having a plurality of pores and including a polyolefin resin. The polyolefin resin has a polydispersity index (PDI) of 2.5 to 4.2, an average pore size of 20 to 40 nm, and a maximum pore size of 50 nm or less.

The invention discloses a dephosphorization material and a preparation method and application thereof, the dephosphorization material comprises: a base material, the base material comprises SiO2, Al2O3, Fe2O3, CaO and MgO; elemental iron; and a plant foaming agent. The large-aperture structures uniformly distributed inside and outside the phosphorus removal material are beneficial to growth and attachment of microorganisms, and generation sites are provided for the removal process of phosphoric acid. The elemental iron contained in the material and phosphate undergo valence change through chemical combination to form hydroxyl and phosphorus flocculation so as to efficiently remove phosphorus pollution. In addition, due to the characteristics of oxidation-reduction capability, low cost, high porosity, difficulty in bonding, large specific surface area, high active iron content and the like of iron, the material has stronger electrochemical enrichment, physical adsorption and oxidation-reduction properties. Therefore, the traditional bottleneck is solved, and excellent efficiency is achieved in a biological filter and an artificial wetland.

The invention discloses a preparation method of through hole type resin, and belongs to the technical field of polymer resin materials. A ternary composite pore-foaming agent composed of toluene, n-heptane and polyethylene glycol (PEG) is adopted, the proportion of the ternary composite pore-foaming agent is optimized, and the through type resin is prepared through suspension polymerization and temperature programming curing. The resin prepared by the method has a highly through pore channel network, the penetration rate is not less than 50%, the resin also has appropriate large pore diameter and relatively high specific surface area and pore volume, meanwhile, the resin keeps good mechanical stability while obtaining an excellent penetration structure, the preparation process is good in repeatability, and the preparation method is suitable for industrial production. An ideal material is provided for the fields of high-performance adsorption separation, chromatographic analysis, catalysis and the like.

Provided is an alumina sintered body having excellent dust-generating resistance of an yttrium-based protective film formed on the surface thereof.　In this alumina sintered body, the number of pores in at least one surface is at most 12,000 pores / mm2, the open porosity is preferably at most 0.30%, the purity is preferably at least 99.20 mass%, the bending strength is preferably at least 320 MPa, the density is preferably at least 3.80 g / cm3, the maximum diameter of the pores is preferably at most 15.00 μm, the maximum depth of the pores is preferably at most 15.00 μm, and the area ratio of the pores in the surface is preferably at most 5.000%.

The present invention discloses a kind of high-efficiency hygroscopic cooling coating and its coating and preparation method, the coating includes water, particle filler and radiation cooling functional resin, the particle filler is distributed in the radiation cooling functional resin, the coating includes 20wt%-60wt% of particle filler and 5wt%-15wt% of water; the water is distributed in the coating in the form of droplets so that the formed paint layer produces a hole structure; the particle filler includes radiation cooling filler and hygroscopic filler, and the coating includes 5wt%-20wt% of hygroscopic filler. The present invention prepares a porous topcoat resin layer based on the hygroscopic cooling coating, combines active evaporative heat dissipation and passive radiative cooling in the porous topcoat resin layer, generates large-aperture holes in the coating by the addition of water, and makes the holes evenly distributed by the control of the rotation speed, and the radiation cooling filler and the hygroscopic filler carry out heat transfer based on the holes, synergistically promoting the improvement of the heat dissipation effect.

The application provides a method and system for determining the permeability of a tight sandstone reservoir. The method comprises: obtaining the porosity and pore throat radius distribution spectrum of the target reservoir; dividing the pore throat radius distribution spectrum of the target reservoir into two parts, i.e., a large-aperture part and a small-aperture part; determining the ratio of the cumulative amplitude of the pore throat radius distribution of the large-aperture part to the cumulative amplitude of the pore throat radius distribution of the small-aperture part based on the pore throat radius distribution spectrum of the large-aperture part and the small-aperture part of the target reservoir; and determining the permeability of the target reservoir based on the ratio and the porosity of the target reservoir. The method can accurately determine the permeability of a reservoir in a tight sandstone reservoir with strong heterogeneity.

The present application relates to the technical field of industrial solid waste utilization, and discloses a synthesis method of smelting fly ash-based mesoporous material, which uses smelting fly ash as a main raw material, uniformly mixes sodium carbonate and smelting fly ash at a specific ratio, and calcines at a suitable temperature, so as to destroy the difficult-to-dissolve glass phase and mullite phase in the smelting fly ash, make the smelting fly ash form a low-carbon cerchi stone phase which is easy to react with acid, and react with low-concentration hydrochloric acid, so as to prepare a mesoporous material with large specific surface area and pore volume and concentrated pore size distribution. The specific surface area of the best sample in the present application is 567.45 m2 / g, the pore volume is 0.95 cm3 / g, the most probable pore diameter is 18.30 nm, the Si / Al ratio is 3.65, and the yield is 44.59%. The preparation process of the method is simple, does not need to use expensive template agents, has high implementability and production safety in actual production, and realizes high-value utilization of smelting fly ash.

The present invention discloses a polyethersulfone microporous sterilizing filter membrane, a preparation method thereof, and its application in vacuum filtration sterilization. The present invention uses an original hot-cold interactive system to prepare an asymmetric polyethersulfone microporous sterilizing filter membrane. During the filter membrane preparation process, the lower surface of the membrane is heated using a graphene heating module (temperature controlled at 30-60°C) to reduce the phase separation rate; the upper surface of the membrane is purged with cold air (2-10°C) to accelerate the surface phase separation rate. As a result, the prepared filter membrane has a large porosity, high hydrophilicity, and high asymmetry. The upper surface of the filter membrane forms a filter layer with a smaller pore size, and the lower surface forms a separation layer with a larger pore size. The filter membrane with such a structure has a good sterilization effect and a high filtration flux.

The application discloses a method for preparing porous zeolite composite materials from iron tailings and application, and converts fine-grained iron tailings with complex composition and low reaction activity into soluble salt through alkali fusion activation, and then converts the soluble salt into zeolite composite materials with uniform particle size and rich pores through hydrothermal crystallization. The application does not perform raw material pretreatment steps such as grinding and impurity removal, does not introduce a structure directing agent, controls the crystal structure of the iron tailings through alkali fusion activation-hydrothermal crystallization reaction, makes [SiO4] and [AlO6] structure units dissolve and recombine, simultaneously realizes in-situ doping and surface loading of iron elements, and constructs micrometer-level octahedral porous zeolite composite materials. The prepared porous zeolite composite materials have a large specific surface area, uniform pore size distribution and complete crystal structure, and exhibit excellent catalytic oxidation performance in a Fenton-like system, can efficiently remove emerging pollutants such as antibiotics, and are helpful to efficient and high-value utilization of fine-grained iron tailings resources, and have a wide application prospect in the field of wastewater treatment.

According to one aspect of the present invention, a thin film separator with improved insulation properties and a preparation method thereof are provided. According to one aspect of the present invention, the separator can have an advantage of implementing a dielectric breakdown voltage of 1,000 V or less while having a thickness of 8 μm or less. To this end, according to one aspect of the present invention, the separator having a controlled maximum pore size within a polymer substrate and a preparation method thereof are provided.

The present invention provides a preparation method and application of a carbon capture material suitable for small-scale biogas power generation. The method comprises the following steps: S1 uses anhydrous ethanol and high-purity water to prepare a preparation solvent A of a KAUST-7 organic metal framework; S2 utilizes NiNbOF5 to mix with the solvent A in step S1 to prepare a NiNbOF5 solution; S3 utilizes pyrazine, MEA and the solvent A in step S1 to mix and prepare a pyrazine-MEA solution; S4, according to the ratio of 1gNiNbOF5 solution to 150g molecular sieve, an appropriate amount of large-pore molecular sieve is placed in a reactor, NiNbOF5 solution and pyrazine-MEA solution are added and quickly stirred to form a uniform reaction, and then naturally cooled after the reaction is completed, and washed with high-purity water and anhydrous ethanol in succession and then dried to obtain the carbon capture material. The carbon capture material prepared by the preparation method of the carbon capture material suitable for small-scale biogas power generation is installed in an adsorption device for separating and capturing CO2 in flue gas without external power, and the desorption process can be carried out at a low temperature and can be reused many times.