105 results about "Ionic solution" patented technology

Proposed is a self-current-generating skin-applicable patch with a first area in contact with the skin and a second area adjacent to and spaced apart from it, where either area contains a biodegradable metal, decomposable and absorbable through skin contact or reaction with tissue moisture. The patch includes a first electrode layer directly contacts the skin as a thin sheet integrated with the first area and has at least one fluid-transferable penetration part, a second electrode layer of a material with a different standard reduction potential is positioned opposite a skin-contacting side, partially extending to connect electrically to the second area, and a support layer, a hydrophilic sheet of predetermined thickness, is positioned opposite the skin-contacting side, having an ionic solution supported. Thus, sufficient iontophoresis and other micro-current effects with active ingredients are achieved through self-generated micro-current, even without a battery-like external power source.

The invention provides a method for extracting rubidium and cesium from mixed salt or solution containing rubidium and cesium, which comprises the following steps: S1, providing a raw material, and purifying an ionic solution containing rubidium and cesium to obtain a solution containing rubidium and cesium; s2, aluminum sulfate and sulfuric acid are added into the solution containing rubidium and cesium for preferential crystallization of cesium, and a first batch of aluminum alum crystals and a first mother solution are obtained; s3, dissolving and purifying the first batch of alumen crystals to obtain high-purity cesium salt; s4, sequentially carrying out evaporation concentration and crystallization separation on the first mother liquor to obtain a second batch of alumen crystals and a second mother liquor; and S5, fusing and purifying the second batch of alumen crystals to obtain high-purity rubidium salt, and returning the second mother liquor to the step S1 for recycling, and the method has the effects of high extraction recovery rate and low cost.

The invention belongs to the technical field of electroplating, and particularly relates to a row hanging tool with auxiliary anodes. The main body part is arranged in the middle of the anode part and is used for supporting the device; the connecting supporting rods are symmetrically arranged on the left side and the right side of the main body component, and modified hooks are evenly arranged on the outer surfaces of the connecting supporting rods. After a metal piece needing to be electroplated is hung on the refitted hook of the device, the metal piece is immersed in an ion solution for electroplating work, and the rotary hook can realize a self-locking state in a manner that the inner rotary hook rod is inserted into the adaptive slot, so that the metal piece hung on the refitted hook cannot be separated from the device; when the metal part enters an ion solution for electroplating, the independent motor can drive the rotary hook and the metal part to rotate at the axis, so that the outer surface of the metal part is in full contact with the ion solution, and the problem that the contact part of the metal part and the modified hook cannot be effectively electroplated to cause electroplating flaws is solved.

The application discloses a preparation method of zero-valent iron with a high Fe(II) content magnetite interface by regulating the redox intensity, and belongs to the field of water treatment. The method comprises the following steps: uniformly mixing zero-valent iron particles and ferrous ion solution at 20 DEG C-30 DEG C, regulating the initial pH value to 1-4 by using a sulfuric acid solution, adding a sulfur ion solution after 20 min of reaction and reacting for another 5 min, wherein the mass ratio of the added sulfur ion to the initial ferrous ion is 0.2-0.4:1; after the reaction is completed, the zero-valent iron particles are separated by magnetism, and are dried in a vacuum oven at 40 DEG C-60 DEG C for 4-12 h to obtain Fe3O4@mZVI materials. The zero-valent iron composite material with a high Fe(II) content magnetite interface prepared by the method can be prepared in an open system without controlling the anaerobic reaction atmosphere environment. Meanwhile, the ferrous ion is oxidized by using air, and no external oxidizing agent is needed, so that the method has the advantages of simple and rapid preparation and low cost. In the preparation process, the sulfur ion is added to regulate the redox reaction degree, the proportion of Fe(II) on the material surface is significantly improved, and the zero-valent iron composite material has better reaction activity and durability for pollutant removal.

The invention discloses an iron-silicon magnetic powder core and a preparation method thereof, and belongs to the technical field of soft magnetic materials and powder metallurgy. The preparation method comprises the following steps: fully mixing a phosphoric acid metal ion solution containing phosphoric acid and metal acid phosphate with iron-silicon alloy powder; the mass ratio of the phosphoric acid solution to the metal acid phosphate to the iron-silicon alloy powder is (0.25-1.5): (0.5-3): 100, and the mass ratio of the phosphoric acid solution to the metal acid phosphate to the iron-silicon alloy powder is (0.25-1.5): (0.5-3): 100; and the coated iron-silicon alloy powder is pressed, and the iron-silicon magnetic powder core is prepared. According to the scheme, the iron-silicon alloy powder is added into the weak acid mixed solution of the phosphoric acid and the metal acid phosphate, so that the dosage of the phosphoric acid in the passivation process is reduced, the passivation speed of the iron-silicon alloy powder is slowed down, and a more uniform insulating coating layer can be formed; meanwhile, by adding metal acid phosphate, acid radical ions are provided in the passivation process, and corresponding orthophosphoric acid metal is generated on the outer surface of the iron-silicon alloy powder.

The application relates to the technical field of electrolytic water oxygen production, in particular to a composite electrode material and a preparation method and application thereof. The preparation method of the composite electrode material comprises the following steps: roughening the surface of a stainless steel mesh by performing first CV activation on the stainless steel mesh in a KOH solution, releasing Cr 3+ ions in the stainless steel mesh 3+ ions, and obtaining the stainless steel mesh after CV activation; performing second CV activation on the stainless steel mesh after CV activation in a Ni 2+ ion solution, forming Cr-doped nickel-iron hydroxide covering the surface of the stainless steel mesh, and obtaining the composite electrode material. The Cr-doped nickel-iron hydroxide loaded on the surface of the stainless steel mesh obtained by the preparation method can solve the technical problems of iron element dissolution, deactivation and active stability decline of the existing nickel-iron hydroxide in a long-period oxygen evolution process.

This invention discloses a vanadium-doped modified sodium iron pyrophosphate material based on spray drying, its preparation method, and its applications. The material exhibits a spherical porous morphology with a particle size between 1 and 10 micrometers; its chemical formula is: Na. 4‑x Fe 3‑x V x (PO4)2P2O7, where 0 < x ≤ 0.1. It is prepared by spray drying, ensuring atomic-level mixing of vanadium and iron through a uniform and stable complexed ion solution; and promoting the formation of a porous spherical morphology through the volatilization of the acidic substrate during rapid drying. The combination of spray drying and trace vanadium doping technology is beneficial for activating more active sodium sites in the sodium iron pyrophosphate cathode material, improving the reversible sodium insertion / extraction capacity, while promoting sodium ion diffusion, reducing polarization voltage, and improving the cycle stability of the material.

The invention relates to a preparation method of a monatomic catalyst with an adjustable coordination environment. The method comprises the following steps: adding precursor salt of reducible metal oxide into an obtained transition metal salt ion solution to obtain a mixed salt solution; pouring the mixed salt solution into the sodium hydroxide solution; turbid liquid is obtained; crystallizing at the temperature of between 150 and 200 DEG C for 24 to 48 hours; and washing, drying and roasting at 500-900 DEG C to obtain the monatomic catalyst with the transition metal loaded on the reducible metal oxide. The transition metal monatomic catalyst with the adjustable coordination environment is doped in reducible metal oxide, and transition metal monatomic in different coordination environments has obvious influence on adsorption and activation of low-carbon alkane and CO2.

The invention discloses a method for activating a copper-indium-sulfur thin film through selenium ions at a low temperature and a solar cell based on the thin film. According to the method, the CuInS2 thin film prepared by spin coating is treated by adopting the selenium ion solution, so that diffusion and distribution of selenium ions in the CuInS2 thin film prepared by spin coating are accurately regulated and controlled, carrier recombination is inhibited, and the CuInS2 thin film which is better in energy band structure, lower in defect state density and better in crystallinity and morphology is obtained; and the solar cell with high efficiency (more than 10.0%) is prepared on the basis. The method disclosed by the invention has the advantages of simplicity in operation, low equipment requirement, low cost, low toxicity of used drugs and small damage of a treatment technology to a thin film structure, overcomes the defects of complicated operation, high equipment requirement, damage to a thin film crystal structure by treatment in a high-temperature environment and the like in the prior art, and opens up a new way for high-performance and low-cost inorganic thin film photovoltaics.

The application discloses a kind of high stability two-dimensional nanometer material aerogel and preparation method thereof, it is related to material science and nanotechnology field.The water solution of two-dimensional nanometer material is frozen and handled to obtain frozen tissue, then foam structure is obtained by freeze drying, after which foam structure is soaked in ionic solution, freeze-dried, to obtain two-dimensional nanometer material aerogel.The application constructs two-dimensional nanometer material foam structure and introduces ionic bond crosslinking mechanism, so that two-dimensional nanometer material is combined by ionic bond to form high stability aerogel, so that aerogel has excellent performance.The application breaks through the selection limit of traditional aerogel material, and is suitable for ceramic two-dimensional material and MXenes with insufficient surface functional groups, lays a foundation for two-dimensional material aerogel large-scale production and application in the field of energy, aerospace and the like.

The wastewater treatment system according to an embodiment of the present invention is used for treating wastewater containing a sodium sulfate solution, and comprises: an electrodialysis device for separating the sodium sulfate solution of the wastewater into a first solution containing sulfate ions, a second solution containing sodium ions, and circulating wastewater from which sodium sulfate has been removed; a first membrane distillation device that extracts purified water from the first solution in order to concentrate the first solution; and a second membrane distillation device that extracts purified water from the second solution in order to concentrate the second solution. According to the wastewater treatment system disclosed by the embodiment of the invention, salt compounds and other harmful ions in the wastewater can be selectively separated through the electrodialysis device so as to effectively separate a high-concentration ionic solution. Therefore, not only can substances after wastewater treatment be recycled to the maximum extent, but also the environmental harmfulness of salt compounds can be greatly reduced.

An ambient energy converter derives energy from variations in ambient temperature and humidity. The ambient energy converter includes a controller, a first chamber containing a first hygroscopic ionic solution and a second chamber containing a second ionic solution. Each chamber includes an electrochemically reactive electrode in contact with the solution therein. The chambers are separated by an ion conductive membrane that conducts an ion species of the solutions. The first solution is coupled to ambience and maintains water vapor pressure equilibrium with changes in ambient humidity. The process results in water condensing and evaporating into and out of the solution with increases and decreases in ambient humidity respectively. The second solution is sealed within a chamber and coupled to the hygroscopic solution by an ion conductive barrier. Water vapor condensing into or evaporating from the hygroscopic solution creates a concentration differential across the ion conductive barrier that generates electricity.

The invention discloses a preparation method of a modified starch-based hydrogel piezoresistive sensor, which comprises the following steps: carrying out porous pretreatment on starch through stepwise solvent engineering to improve the accessibility of a molecular chain of the starch; enabling aromatic carboxylic acid to generate active ester under the action of a coupling agent, and performing efficient grafting reaction on the active ester and the pretreated starch under mild pH and temperature conditions to obtain modified starch with high esterification rate; and finally, carrying out copolymerization curing on the obtained modified starch, a hydrogel monomer and a cross-linking agent, and dipping in an ionic solution to obtain the hydrogel piezoresistive sensor. The aromatic carboxylic acid is grafted on the starch at high density under a mild condition, and the mechanical strength and toughness of the hydrogel are synergistically enhanced by an introduced rigid benzene ring, a dynamic hydrogen bond and a pi-pi stacking effect; an efficient conductive path is constructed through the synergistic effect of aromatic rings and ions, and the sensitivity and response recovery speed of the sensor are remarkably improved. The sensor can be widely applied to the fields of wearable health monitoring, electronic skin, man-machine interaction and the like.

The present disclosure relates to the technical field of processing of hard and brittle insulating materials, and particularly relates to a method and device for processing hard and brittle insulating materials. The method for processing hard and brittle insulating materials comprises: placing a workpiece made of hard and brittle insulating material, a tool electrode and an auxiliary electrode in a resin ion solution, applying a voltage between the tool electrode and the auxiliary electrode to form a conductive circuit, and forming a resin insulating film on the surface of the tool electrode under the action of the electric field; increasing the voltage to make the voltage between the tool electrode and the resin ion solution exceed the breakdown voltage of the resin insulating film to generate a breakdown discharge, and removing the hard and brittle insulating material of the workpiece. The present disclosure can make the workpiece obtain higher surface quality, processing efficiency and processing precision, and improve the comprehensive processing quality of the workpiece.

The invention discloses a water quality heavy metal type identification method based on data analysis of multiple intelligent sensors, and relates to the field of heavy metal detection. Thermodynamically analyzing the stable form of at least one heavy metal in the acidic chloride ion solution system; establishing a heavy metal leaching mathematical model; carrying out range analysis on the basis of an orthogonal experiment result; respectively leaching the to-be-treated raw materials into at least one heavy metal; establishing a heavy metal reduction mathematical model; respectively calculating the reduction rate of each heavy metal under each influence factor to obtain the optimal reduction condition of the heavy metal; and respectively reducing the heavy metals in the at least one heavy metal by using sodium borohydride. The reasonability of an output result can be improved by establishing a heavy metal leaching mathematical model, establishing a heavy metal reduction mathematical model, forming a preset recognition threshold value and calculating the treatable content of the heavy metal.

The invention discloses a method for preparing a PVC (polyvinyl chloride) / CNT (carbon nanotube) / LDH (layered double hydroxide) electromagnetic shielding composite membrane by an in-situ growth packaging method, and discloses a three-step method for preparation, which comprises the following steps: firstly, preparing a carboxyl functionalized base membrane, then filling mixed metal ions in membrane pore channels by soaking in a mixed metal ion solution, and finally soaking in alkali liquor to obtain the PVC / CNT / LDH electromagnetic shielding composite membrane. The following technical breakthroughs are successfully realized: (a) an LDH dielectric component is introduced while a CNT complete conductive network is maintained, (b) strong interface bonding of LDH and a matrix is realized through chemical bonding, (c) a multi-scale heterogeneous interface is constructed to enhance electromagnetic wave absorption, and (d) a simple and efficient preparation process is developed to reduce the production cost.

The invention relates to the technical field of solar cells, and discloses a perovskite layer and a preparation method thereof, a perovskite cell and a photovoltaic module, and the preparation method of the perovskite layer comprises the following steps: in an atmosphere containing oxygen, coating a lead halide skeleton layer with a cationic solution containing an additive, and carrying out annealing to obtain the perovskite layer; wherein groups in the cation solution comprise iodide ions and formamidine cations, the additive is RA, R is organic weak acid radical ions, and A is sodium ions and / or potassium ions. When the preparation method is used for preparing the perovskite layer, oxidation of iodide ions can be inhibited, and the crystallization quality of crystals of the perovskite layer is improved.

The application discloses a method for identifying Fe by using 2-amino-5-substituted-1, 3, 4-oxadiazole. 3+ The method comprises the following steps: firstly, preparing a 2-amino-5-substituted-1, 3, 4-oxadiazole solution to be detected; secondly, adding a metal cation solution into the solution to be detected; and thirdly, identifying Fe by naked eye observation and ultraviolet-visible absorption spectrum. 3+ The method has good selectivity for Fe 3+ , is not interfered by other ions, and can better identify and detect Fe in the environment. 3+ ​

The invention provides a flow battery diaphragm, a modification method and a zinc-bromine flow battery. The method comprises the following steps: mixing and stirring a conductive material, a binder and an organic solvent to obtain a modified coating solution; coating an ion exchange membrane with the modified coating solution; carrying out evaporation treatment on the ion exchange membrane to obtain a modified ion exchange membrane; the modified ion exchange membrane is subjected to direct-current pulse heating treatment, and the modified diaphragm is obtained.According to the technical scheme, the pulse heating method is adopted for increasing the coating temperature of the ion exchange membrane in a short time, dendritic crystals are eliminated, and a high-concentration zinc ion solution caused by concentration polarization possibly generating the dendritic crystals is interfered; and the ion selectivity and the ion penetrability of the ion exchange membrane are not influenced, the function of removing existing and potential zinc dendrites is added, and the ion exchange membrane has good mechanical properties, relatively high flow battery efficiency, excellent durability, corrosion resistance and the like, can replace the existing ion exchange membrane, and has wide application prospects. The method is applied to the field of flow battery energy storage.

This invention discloses a system and its regulation method that couples an ionic solution heat storage cycle and a high-temperature heat pump cycle. In the system's desorption tower, a waste heat medium is introduced to desorb a CO2-amino functional ionic solution. The separated CO2 is stored in a first storage tank, and the regenerated amino functional ionic solution is transported to an absorption tower via a third storage tank. In the absorption tower, CO2 is absorbed and heat is released. The resulting CO2-amino functional ionic solution is stored in a second storage tank and then sent to the desorption tower for further desorption, achieving efficient storage and utilization of waste heat. In the high-temperature heat pump cycle, a non-azeotropic CO2 working fluid selectively absorbs components through an absorption tower. By adjusting the pressure and CO2 flow rate of the absorption tower, the concentration of components in the working fluid can be flexibly controlled, thereby optimizing the system's performance and efficiency under different operating conditions.

The invention discloses a metal collaborative recovery and cascade purification method, which comprises the following steps: classifying and pretreating metals, collecting metal-containing materials from wastes, carrying out preliminary classification according to metal types, treating bulk materials into proper particle sizes through physical methods of crushing, screening and grinding, and carrying out chemical leaching and dissolving. The method comprises the following steps: carrying out chemical leaching on metal by using an acid, alkali and saline solution, dissolving target metal and forming a metal ion solution, adding a precipitator into the metal ion solution to separate out the target metal in the form of precipitate, separating the precipitate from clear liquid by virtue of a filtering and centrifuging method, and collecting metal precipitate; according to the method, the whole-process recovery and purification of the metal from waste to a high-purity product are realized through a cascade process of classification pretreatment, chemical leaching, precipitation separation, washing and drying and extraction refining, and compared with traditional pyrogenic process smelting, a high-temperature environment is not needed, and the energy consumption and the treatment cost are remarkably reduced.

The present application relates to the technical field of environmental protection water treatment, in particular to a preparation method and application of one-step aluminum modified fish scale calcium defluorination material; the present application successfully prepares the defluorination material with economy and high efficiency by combining hydrochloric acid demineralization pretreatment with sodium metaaluminate one-step modification process; the removal rate of the composite material prepared by the present application to 10mg / L fluoride ion solution can reach 94.76%, the theoretical maximum adsorption capacity reaches 118.53mg / g, the actual test adsorption capacity reaches 9.56mg / g, and the stable and efficient adsorption performance is maintained in the pH 3-6 range; the process of the present method is simple, the reaction conditions are mild, and the material preparation cost is significantly reduced, which provides an innovative solution with practicability and economy for fluorine-containing wastewater treatment.

The invention relates to the field of deionizing solution detection, in particular to a deionizing solution detection method for a fuel cell, comprising a TDS module, an NTC module and a control sampling module, a first probe and a second probe of the TDS module are inserted in a deionizing tank, and a thermistor of the NTC module collects the temperature T of the deionizing solution; the control sampling module controls the TDS module to work to obtain a resistance value R between the first probe and the second probe; the following formula is satisfied: K = Q / R * [1 + 0.02 * (T-25)]; the control module is used for acquiring the resistance value R between the first probe and the second probe, acquiring the conductivity of the ion solution through the resistance value R between the first probe and the second probe, and judging the soluble solid content in the deionized solution through the conductivity, so that the soluble solid content in the deionized solution can be accurately measured without pouring out the ion solution. And the conductivity of the deionized solution is detected, so that the detection efficiency is effectively improved.

The invention discloses a modified MCM-22 molecular sieve catalyst and a preparation method and application thereof, the preparation method comprises the following steps: S1, adding MCM-22 molecular sieve raw powder into an alkaline solution, reacting for a preset time, and filtering to obtain a first sample; s2, adding the first sample into an ammonium nitrate solution, mixing and stirring, filtering, and roasting to obtain a second sample; and S3, adding the second sample in the step S2 into a molybdenum ion solution, mixing and stirring, standing for a preset time, filtering, washing, drying and roasting to obtain the modified MCM-22 molecular sieve catalyst. According to the preparation method of the modified MCM-22 molecular sieve catalyst provided by the invention, framework silicon in the molecular sieve is selectively dissolved through the alkaline solution, so that a pore channel of the molecular sieve is expanded, and the proportion of a medium acid site of the molecular sieve is increased through molybdenum modification, so that the diffusion and catalysis requirements of high-carbon olefins are effectively met; the reasonable regulation and control on the isomerization product composition are realized.

The application discloses a kind of core-shell nanostructure magnesium hydride-magnesium borohydride hydrolysis hydrogen production materials and preparation method thereof.A kind of core-shell nanostructure magnesium hydride-magnesium borohydride hydrolysis hydrogen production material preparation method, comprising the following steps: magnesium hydride is loaded into ball mill jar vacuum, then borane gas is filled in ball mill jar, ball milling treatment is carried out, and the core-shell nanostructure magnesium hydride-magnesium borohydride hydrolysis hydrogen production material is obtained.The application uses solvent-free gas-solid reaction, ball milling method, simple, low cost;This composite method not only avoids the direct use of expensive magnesium borohydride, but also overcomes the shortcomings of other composite systems, and even improves the theoretical hydrogen release capacity;The in-situ formed magnesium borohydride nanoshell plays a key role in improving the hydrolysis kinetics of magnesium hydride by releasing heat and forming a local magnesium ion and metaborate ion solution environment.

The embodiment of the invention relates to a self-healing diaphragm, an ionic solution, a solid electrolyte, a preparation method and application. The preparation method of the diaphragm comprises the following steps: adding a first polymer, a hydroxyl-containing polymer matrix and a fluorine-containing lithium salt into an organic solvent to form a first solution; mixing the nano solid electrolyte with a second polymer to obtain a third solution; the first solution and the third solution are subjected to electrostatic spinning to form a membrane, and the membrane with the self-healing capacity is obtained through drying and piece cutting; the diaphragm contains a self-healing polymer, and hydrogen bond bridging is formed through hydroxyl in a polymer matrix and fluorine ions in fluorine-containing lithium salt, so that self-repairing is realized; the ionic solution is obtained by mixing a polymer monomer, the polymer matrix, a fluorine-containing lithium salt, an auxiliary agent, a film-forming additive and a lithium salt; the diaphragm and the ionic solution are used as a battery diaphragm and an electrolyte to assemble a battery and initiate in-situ polymerization to obtain a gel solid electrolyte with self-healing capability, so that the safety and the stability of the battery can be remarkably improved.

The invention provides a preparation method of chemical copper plating lignin, and belongs to the technical field of chemical copper plating. Lignin serves as a treatment object, a silver ion solution is added for activating treatment, ethylene glycol is added for one-bath reduction, and activated silver particle loaded lignin is obtained; and preparing a chemical copper plating bath, adding the silver-loaded lignin, and carrying out chemical plating in a nitrogen atmosphere under an alkaline condition to obtain the chemical copper plating lignin. The chemical copper plating lignin is chemically plated by using the ethylene glycol method, so that not only is the copper loading efficiency very good, but also the prepared chemical copper plating lignin is endowed with excellent heat-conducting property.

The invention belongs to the technical field of intelligent wearable electronics, and particularly relates to a preparation method of a CNF / P (AM-co-AA) / Zn < + > conductive hydrogel flexible strain sensor. The preparation method comprises the following steps: dissolving carboxylated cellulose nanofibers (CNF) in deionized water, sequentially adding acrylamide (AM), N, N '-methylene bisacrylamide (MBA), ammonium persulfate (APS) and acrylic acid (AA) into a CNF solution, removing bubbles in the solution to obtain a hydrogel prepad fluid, transferring the hydrogel prepad fluid into a mold, and carrying out vacuum drying to obtain the hydrogel. CNF / P (AM-co-AA) hydrogel is obtained through thermal polymerization in a high-temperature environment, ZnCl2 and H2SO4 are dissolved in deionized water to obtain an ionic solution, the prepared hydrogel is soaked in the ionic solution, the hydrogel is taken out after a period of time to obtain conductive hydrogel, copper foils are installed on the two sides of the conductive hydrogel, and finally the flexible strain sensor with excellent mechanical performance is obtained.

This invention provides a modified SAPO-56 zeolite molecular sieve, its preparation method, and its applications, relating to the field of chemical adsorbent technology. The invention involves mixing a silicon source, an aluminum source, phosphoric acid, a template agent, and water to obtain an initial reaction gel; crystallizing the initial reaction gel to obtain a SAPO-56 zeolite molecular sieve containing a template agent; mixing the SAPO-56 zeolite molecular sieve with a cation exchange solution for ion exchange; and calcining the resulting ion exchange product to obtain a modified SAPO-56 zeolite molecular sieve; the cations in the cation solution include alkali metal ions or lanthanide rare earth metal ions. The modified SAPO-56 zeolite molecular sieve prepared by this invention has high crystallinity and, compared with the original SAPO-56 molecular sieve powder, exhibits significantly improved CO2 adsorption performance, demonstrating excellent CO2 / N2 gas adsorption and separation performance.