253 results about "Coordination polymer" patented technology

The invention belongs to the technical field of crystalline materials, and relates to a metal-organic coordination polymer crystal material, in particular to a nickel-based double-ligand coordination polymer crystal material as well as a preparation method and application thereof. The chemical formula of the nickel-based double-ligand coordination polymer crystal material is {[Ni (1, 4-bib) (BDC) (H2O) 2]. (1, 4-bib) 0.5. H2O} n, and the preparation method comprises the following steps: dissolving NiCl2. 6H2O, H2BDC and 1, 4-bib in a DMF / water mixed solution with a volume ratio of 1: 1, sealing, carrying out a solvothermal reaction, heating at a constant temperature of 90.0 DEG C for 3 days, and slowly cooling the system to room temperature to obtain a green bulk crystal G-Ni. The nickel-based double-ligand coordination polymer crystal material can be applied to Ag < + > recognition and antibiotic detection.

The invention discloses a method for low-alkalinity flotation of lead-zinc (silver-containing) polymetallic ore based on a heterocyclic sulfydryl coordination polymer, which comprises the following steps of: adjusting the pH value of ore pulp to 7.5 + / -0.3, and sequentially carrying out roughing, scavenging and concentration by adopting a composite collecting agent according to a gradient flotation procedure; wherein the mass concentration of the ore pulp is 20-40%; the adding amount of the composite collecting agent is 150-300g / t of ore pulp; the composite collecting agent is composed of a modified heterocyclic sulfhydryl compound, C12-C18 alkylamine polyoxyethylene ether and a star-shaped branched nonionic surfactant according to the mass ratio of 1: (1-3): (0.5-2). According to the method, the complex silver polymetallic ore is subjected to efficient flotation under the low-alkalinity condition by applying the composite collecting agent based on the heterocyclic sulfydryl coordination polymer. Through deep exploration and optimization of a flotation reagent system, process parameters and a microcosmic action mechanism, the recovery rate of metal such as silver, copper and lead is remarkably increased, and the ore dressing cost is greatly reduced.

The application belongs to the field of photoelectric functional materials, and discloses a blue light excitable Cu-based fluorescent material and a preparation method thereof. The material is obtained by room temperature reaction of 4-pytrz and halogenated cuprous CuX (X=Br, I), wherein 4-pytrz is 4-(4H-1,2,4-triazole-4-yl)pyridine. Two highly stable coordination polymers, complex 1 [CuBr(4-pytrz)2] n and complex 2 [Cu2I2(4-pytrz)] n are designed and synthesized, which have good thermal stability, exhibit a wide excitation band covering from deep ultraviolet light to blue light region, and have a quantum efficiency of 19.36% under blue light excitation. The complexes exhibit effective solid-state emission and enhanced light stability, and have wide application prospects.

The invention discloses a zinc transition metal coordination polymer and a preparation method and application thereof, and relates to the technical field of metal-organic framework material photocatalysts, the chemical formula of the zinc transition metal coordination polymer is [Zn2 (L) 2 (byp)] n, and the zinc transition metal coordination polymer is prepared from 3, 3 '-(1, 2-phenyl dimethylene diether) dibenzoic acid ligand (H2L), 1, 2, 3, 4-tetramethyl-1, 3, 4-tetramethyl-1, 3, 4-tetramethyl-1, 3, 4-tetramethyl-1, 3, 4-tetramethyl-1, 3, 4-tetramethyl-1, 3, 4-tetramethyl-1, 3, 4-tetramethyl-1 The polymer is prepared by co-dissolving 1, 5-bis (2-methyl-1-imidazolyl) pentane ligand (pyp) and Zn (Ac) 2.6 H2O in an aqueous solution, and the polymer has a wide prospect in application of photocatalytic degradation of antibiotics as a photocatalyst.

The application belongs to the technical field of nanometer material preparation, and discloses a regulation method for synthesizing copper coordination polymers with different dimensions. The method is to obtain copper coordination polymers with different dimensional morphologies under room temperature conditions by controlling the reaction sequence of copper ion solution, uniform benzenetricarboxylic acid and 4,4-dipyridine and the molar ratio of uniform benzenetricarboxylic acid and 4,4-dipyridine. The synthesis process is simple, the cost is low, the dimension of the morphology is adjustable, large-scale industrial production is possible, and good economic benefits and environmental benefits are achieved.

This invention provides a high-nickel ternary cathode material, its preparation method, and its applications. The high-nickel ternary cathode material comprises a composite core and a metal-organic coordination polymer coating layer on the surface of the composite core. The composite core includes a high-nickel ternary cathode material matrix and lanthanide metal phosphate particles dispersed in the matrix. The metal-organic coordination polymer in the coating layer is formed by the polymerization of nitrogen-containing organic ligands and their coordination with high-valence metal cations. This invention improves the bulk structural stability by pinning grain boundaries with lanthanide metal phosphates, while simultaneously providing interfacial protection using the metal-organic coordination polymer coating layer, effectively solving the problem of simultaneously achieving high cycle life and thermal stability in existing high-nickel ternary cathode materials.

The application discloses a kind of light-assisted anticorrosion coating materials and preparation method based on metal coordination structure, the light-assisted anticorrosion coating material is on the basis of traditional anticorrosion metal zinc layer continue to be coordinated with the metal coordination polymer Co (bpy) (dhbq) (bq) with photoelectric conversion capability, and form coordination complex Co (bpy) (dhbq) (bq) @Zn.Because metal coordination polymer Co (bpy) (dhbq) (bq) itself can additionally generate photo-generated electron and photo-generated current after being illuminated, provide redundant charge for Zn layer, make it be in lower potential, strengthen the function of cathodic protection.Corrosion can be inhibited through this mechanism, prolong the service life of Zn layer, provide efficient, green anticorrosion protection for the steel material that needs to be protected.In addition, metal coordination light-assisted anticorrosion technology can also inhibit marine bioattachment by slowly releasing metal ions Co, prevent biofilm formation, reduce microbial growth, prolong the service life of protected material in marine environment, also applicable to underwater bioinduced corrosion and the protection of fouling metal structure.

The invention discloses a photo-assisted anti-corrosion coating material based on a metal coordination structure and a preparation method, the photo-assisted anti-corrosion coating material is continuously coordinated with a metal coordination polymer Co (bpy) (dhbq) (bq) with photoelectric conversion capability on the basis of a traditional anti-corrosion metal zinc layer to form a coordination compound Co (bpy) (dhbq) (bq) (at) Zn. Due to the fact that the metal coordination polymer Co (bpy) (dhbq) (bq) can additionally generate photo-generated electrons and photo-generated currents after being illuminated, redundant charges are provided for the Zn layer, the Zn layer is made to be in a low potential, and the cathode protection function is enhanced. Through the mechanism, corrosion can be inhibited, the service life of the Zn layer can be prolonged, and efficient and green anti-corrosion protection is provided for steel and iron materials needing to be protected. In addition, by slowly releasing metal ions Co, the metal coordination light-assisted anticorrosion technology can inhibit marine organism adhesion, prevent biofilm formation, reduce microbial growth and prolong the service life of a protected material in a marine environment, and is also suitable for underwater organism induced corrosion and protection of stained metal structures.

This invention relates to a method for producing organometallic coordination polymers and materials obtained using the provided method. The organometallic coordination polymer synthesized according to this method has a gel structure, characterized by an effective diameter of 0.75-0.80 nm and a specific area of ​​1300-1700 m². 2 / g, micropore volume of 0.5-0.6cm³ 3 The method yields nanopores per g and improved thermal stability. The synthesis method allows for reduced material consumption during the process by using a single solvent in both the synthesis and activation stages, thus shortening the production time of the polymer gel, which is characterized by active mesopores and micropores. This makes it suitable as a matrix in various absorption processes, including natural gas storage systems.

The invention discloses a metal organic optical waveguide material with lyochromism and application of the metal organic optical waveguide material in the field of information storage. The preparation method of the material comprises the following steps: mixing phthalonitrile and silver tetrafluoroborate according to a molar ratio of 0.005-70, then adding acetonitrile for ultrasonic dissolution, slowly volatilizing at room temperature, and obtaining the microcrystalline material after the solvent is volatilized. Placing the coordination polymer in a humid environment for 12 hours, wherein the structure of the coordination polymer is connected from a one-dimensional coordination polymer to a two-dimensional coordination polymer; then placing in an acetonitrile atmosphere for 20 hours to convert the structure from a two-dimensional coordination polymer to a one-dimensional coordination polymer; the structure conversion and color conversion cycle is reversible. According to the invention, not only is solvent-induced tunable photoluminescence realized, but also a color-tunable optical waveguide system is constructed, a miniature active optical waveguide system with high safety and high information density is developed by using the material, and the application of the material in the field of information storage is shown.

This invention provides a fluorescence-enhanced composite probe based on gold nanoclusters anchored on a zinc-based coordination polymer, its preparation method, and its application, belonging to the field of probe preparation technology. The method involves first mixing an aqueous solution of glutathione and an aqueous solution of tetrachlorohydrin to obtain a gold nanocluster solution; then adding adenine and water to a 4-(2-hydroxyethyl)-1-piperazine ethanesulfonic acid buffer solution and stirring until homogeneous, followed by the addition of a zinc chloride solution to obtain a zinc-based coordination polymer; finally, the gold nanocluster solution and the zinc-based coordination polymer solution are mixed homogeneously to obtain the fluorescence-enhanced composite probe based on gold nanoclusters anchored on the zinc-based coordination polymer. The probe of this invention can rapidly and sensitively recognize adenosine triphosphate (ATP). It can also be used to construct fluorescent hydrogels by mixing this material with κ-carrageenan; the hydrogels exhibit a sensitive response to ATP and good self-healing ability.

The application belongs to the technical field of chemical industry, in particular to a novel glycerol hydrogenation catalyst and a preparation method thereof, which comprises the following steps: S1, dissolving benzene tetraamine tetrahydrochloride in deionized water, and stirring and dissolving to obtain a uniform solution; S2, dissolving a metal salt in deionized water, and adding the uniform solution obtained in S1 dropwise; S3, slowly adding ammonia water to the solution in S2, adjusting the pH to about 8, and stirring and reacting under room temperature conditions, and gradually producing dark precipitates in the solution; the application uses a kind of one-dimensional conjugated coordination polymer material as a glycerol hydrogenation catalyst, changes the type of metal ions, and obtains excellent glycerol hydrogenation reduction performance, realizes 99.99% of the conversion rate of glycerol and 97.10% of the selectivity of 1,2-propanediol under the conditions of 210 DEG C and 2.0 MPa; the one-dimensional conjugated coordination polymer material has simple preparation process, excellent catalytic performance, good long-term stability and commercial prospect.

This application discloses a phenanthroline benzimidazole-structured polyimide single rare-earth ion coordination full-spectrum luminescent material, its preparation method, and its applications, belonging to the field of polymer luminescent material preparation technology. This phenanthroline benzimidazole-structured polyimide single rare-earth ion coordination full-spectrum luminescent material comprises a phenanthroline benzimidazole-structured polyimide, a rare-earth ion, and a β-diketone-structured small organic molecule ligand bound through coordination. This polymer single rare-earth coordination material retains the advantages of polyimide while exhibiting the characteristics of rare-earth ions (Ln... 3+ The addition of ) brings special optical properties, coordination polymers and rare earth ions Tb 3+ PI-Tb formed after coordination 3+ It can emit full-spectrum white light (CIE = (0.31, 0.35)) and exhibits excellent thermal stability and solubility.

The invention relates to the technical field of environmental remediation, and particularly provides a bifunctional copper-based coordination polymer photocatalyst as well as a preparation method and application thereof.The bifunctional copper-based coordination polymer photocatalyst is prepared from copper chloride dihydrate, 4, 4 '-bis (3-pyridinecarboxamide) diphenyl ether and benzoic acid as main raw materials by adjusting reaction parameters. And reacting in a hydrothermal kettle to generate the bifunctional copper-based coordination polymer photocatalyst {[Cu2 (3-padpe) 2Cl2]. H2O} n. The method has the characteristics of simple process, low cost, high catalyst activity, good stability, reusability and the like, shows good application potential in repairing water bodies and soil polluted by organic matters and heavy metals, and provides a new research thought and insight for development of a novel multifunctional environment repairing agent.

The invention discloses a light-induced self-cleaning high-flux high-adhesion oil-water separation membrane and a preparation method thereof, the method comprises the following steps: S1, preparing a metal-polyphenol porous coordination polymer suspension, and drying to obtain a metal-polyphenol porous coordination polymer solid; s2, divalent metal nitrate polyhydrate, trivalent metal nitrate polyhydrate and PCP are mixed in water, alkali liquor is dropwise added to adjust the pH to be neutral, LDHs grow on the surface of a PCP solid in situ, and LDHs-PCP is obtained; s3, performing plasma treatment on the substrate filter membrane; and S4, dispersing LDHs-PCP in water, and carrying out suction filtration on the dispersion liquid onto the plasma modified substrate filter membrane to obtain the light-induced self-cleaning high-flux high-adhesion oil-water separation membrane. The oil-water separation membrane disclosed by the invention has high flux, super-hydrophilicity and underwater super-oleophobicity; the oil-water separator has high mechanical strength and illumination self-cleaning capability, and can stably operate for a long time in a high-strength oil-water separation process.

The application provides a flexible water-stable coordination confined material as well as a preparation method and application thereof, and belongs to the technical field of metal organic coordination polymers. The flexible water-stable coordination confined material is obtained through a coordination reaction of metal ions and oxygen-based organic ligands; wherein the metal ions are selected from any one of V 4+ , Zr 4+ , Cu 2+ , Ti 4+ , Al 3+ , Cr 3+ , Fe 3+ ; and the oxygen-based organic ligands are selected from any one of nitrogen heterocyclic phosphonic acid organic ligands, alkyl phosphonic acid organic ligands, sugar organic ligands, phenolic hydroxyl organic ligands, alcoholic hydroxyl organic ligands, nitrogen heterocyclic hydroxyl organic ligands and enolic organic ligands.

This invention discloses a heavy p Preparation methods of transition metal-modified transition metal coordination polymers and their application in seawater electrolysis for hydrogen production, in the fields of transition metals, heavy metals, and heavy metals. p In the presence of both metal and complexing agent, a one-step co-precipitation method was used to prepare heavy metals. p Transition metal coordination polymers modified with region metals. The heavy metals prepared in this invention... p Transition metal-modified polymers can be used to modify transition metal coordination polymers through heavy metal modification. p The strong Lewis acidity of the metal in the region repels chloride ions, inhibiting the chlorination side reaction, and can also pass through the heavy metal. p The polarization of the metal in the region activates the lattice oxygen oxidation mechanism, lowering the energy barrier for seawater oxidation reactions. p The anion exchange membrane seawater electrolyzer constructed using a transition metal coordination polymer modified with a metal zone as the anode exhibits both excellent reactivity and corrosion resistance, demonstrating significant application prospects in the field of direct seawater electrolysis. This invention utilizes low-cost raw materials, employs a simple preparation process, and is feasible and economical for large-scale production.

The invention discloses a core-shell microcapsule and a preparation method thereof, and relates to the technical field of daily chemical products. The core-shell microcapsule comprises a microcapsule core with a hydrophobic material and a microcapsule shell for encapsulating the microcapsule core, the microcapsule shell comprises hybrid thermosetting resin formed by reacting multifunctional amine with epoxy resin and acrylate respectively, a coordination polymer formed by an anionic polymer containing carboxylate radicals and divalent cations, and a polyion compound formed by the anionic polymer containing carboxylate radicals and a cationic polymer. The core-shell microcapsule disclosed by the invention is suitable for wrapping various hydrophobic / lipophilic oily core materials, shows good stability in a high-temperature washing liquid environment and good adhesion performance on fabrics, and the capsule shell material has a biodegradable characteristic, so that the coating of essence can be effectively realized and the functional requirement of generating fragrance by friction can be met; the environment friendliness, the use safety and the application functionality are realized.

The invention discloses a pyrolytic coordination polymer derived copper-rare earth diatomic catalyst as well as a preparation method and application thereof, and belongs to the technical field of catalytic materials. The preparation method comprises the following steps: firstly, constructing a formaldehyde-dicyandiamide-copper salt-rare earth salt quaternary coordination polymerization system, preparing a polymer precursor containing a metal-nitrogen coordination bond in situ, and realizing molecular-level uniform dispersion of copper and rare earth ions; and then coupling inert atmosphere pyrolysis and reducing atmosphere reduction processes, accurately constructing and stably anchoring copper-rare earth heteronuclear diatomic sites, and finally forming a target catalyst with the diatomic sites uniformly dispersed on the nitrogen-doped carbon carrier. When the material is used for a CO2 electrochemical reduction reaction, the methane Faraday efficiency reaches up to 78% under the current density of 400 mA cm <-2 >, and the stability is excellent; and in a wide current density interval of 200-600 mA cm <-2 >, the methane selectivity is stably maintained to be 60% or above. The process is simple and convenient, the cost is low, and an economic, reliable and large-scale technical scheme is provided for CO2 resource efficient conversion.

The invention relates to the technical field of photoelectrocatalysis, in particular to a Co (II) coordination polymer photoelectrode crystalline material and a preparation method and application thereof. The Co (II) coordination polymer {[Co (H2O) (Br-BDC) (BMIP)]. H2O} n is obtained from organic ligands BMIP, H2 (Br-BDC) and cobalt salt through a solvothermal method, cobalt (II) ions serve as three connection nodes, BMIP and H2 (Br-BDC) ligands serve as bridging ligands to be in mutual bridging, a two-dimensional honeycomb structure is formed, and a three-dimensional supramolecular structure is formed between layers through intermolecular hydrogen-bond interaction and pi-pi stacking. Wherein H2 (Br-BDC) is 2, 5-dibromoterephthalic acid, BMIP is 1, 3-bis (dimethylimidazolyl) propane, and n is a positive integer. The Co (II) coordination polymer shows relatively good photoelectric property, has the potential of serving as a photoelectrode material, has good optical and electrical characteristics, can be used for constructing an efficient photoelectrocatalysis water decomposition system, and has an application prospect in the aspects of photoelectric hydrolysis water oxidation and the like.

The invention belongs to the field of coordination polymers, and discloses an antiferromagnetic tetranuclear cobalt coordination polymer constructed by mixed polydentate ligands and a preparation method and application thereof. The chemical formula of the polymer is (C9H9O6) 2 (C26H18N4) 2 (OH) 2Co4. (H2O) 7, C9H9O6 is 1, 3, 5-cyclohexane tricarboxylic acid, C26H18N4 is 1, 2, 4, 5-tetrapyridyl benzene, the polymer is a monoclinic system and a P21 / c space group, the cell parameters are alpha = 90 degrees, beta = 96.166 (8) degrees and gamma = 90 degrees, and the polymer has few defects, high crystallinity and good stability and can be applied to the fields of adsorption separation, hydrogen storage, energy storage, molecular magnets, catalysis, sensing or molecular recognition and the like.

The application belongs to the field of coordination chemistry and analytical sensing technology, and particularly relates to a Zn(II)-Tb(III) complex ratio fluorescence sensor and a preparation method and application thereof. The sensor is a double-metal coordination polymer formed by coordination of Zn(II) ions, Tb(III) ions, nitrogen-containing organic ligands and carboxylic acid organic ligands. Under excitation conditions, the sensor simultaneously generates an emission signal of ligand coordination with Zn(II) and a characteristic emission signal of Tb(III) ions, forming intrinsic double emission. By monitoring the fluorescence intensity ratio (I395 / I549) of the two characteristic emission peaks at 395 nm and 549 nm, ratio fluorescence detection of propyl gallate can be realized, and the detection limit is as low as 0.35 μM. The sensor of the application has a simple synthesis method, a rapid detection process, and realizes internal calibration by using a ratio signal, has strong anti-interference ability, and is suitable for detection of propyl gallate in edible oil and other actual samples.

The application discloses a kind of high-efficiency heterogeneous catalyst for CO2 ring addition preparation cyclic carbonate and its preparation method and application, belong to catalyst technical field.The high-efficiency heterogeneous catalyst is transition metal doped polyoxometalate coordination polymer, chemical general formula is C 16 H 58 M2N2Na2O 48 V 10 Wherein, M is selected from Co 2+ , Ni 2+ , Cu 2+ Or Zn 2+ Its preparation method is: sodium vanadate, transition metal acetate and bis (2-hydroxyethyl) amino (trihydroxymethyl) methane ligand are dissolved in water with pH being 1~3, stirring reaction, after filtration, crystallization is stationary, and is obtained.In the ring addition reaction of CO2 and epoxide, the catalyst and cocatalyst tetrabutylammonium bromide synergistic effect, catalytic yield can be up to 98.2%, selectivity is more than 99%, and catalytic activity still remains at 88% after recycling five times.

This invention presents a novel and sustainable approach for engineering highperformance electronic substrates derived from goat-based textiles, traditionally referred to as Brana. By using a carefully organized sequence of eco-friendly chemical, mechanical, and nanotechnological processes, the textile becomes 8 biodegradable, flexible, and electronically functional platform. This method incorporates active nanoink materials like graphene oxide, carbon nanotubes, and conductive and coordination polymers through scalable deposition techniques such as chemical vapor deposition, electrochemical coating, and screen printing. Consequently, the resulting substrate demonstrates outstanding electrical conductivity, mechanical strength, and thermal stability, making it perfect for next-generation flexible electronics applications. These include wearable biosensors, environmental monitoring devices, flexible printed circuit boards (PCBs), and energy storage components like supercapacitors and battery electrodes. Designed with both ecological impact and industrial scalability [ባ mind, this invention bridges indigenous natural materials with state-of-the-art nanomaterials and fabrication strategies, thereby setting a new benchmark [በ the development of sustainable, multifunctional electronic platforms

The invention discloses an amorphous copper-trithiocyanuric acid coordination polymer as well as a preparation method and application thereof, and belongs to the technical field of functional materials and biomimetic catalysis. The polymer does not have a long-range ordered structure, and the copper element takes cuprous as a main existence valence state. The preparation method comprises the following steps: carrying out surface coordination reaction on cuprous oxide serving as a template and trithiocyanuric acid to form a core-shell intermediate, removing the template through acid etching, and reconstructing to obtain the final amorphous coordination polymer. The material simultaneously has high-efficiency peroxidase-like and glutathione-like oxidase double-enzyme activity, can synergistically catalyze hydrogen peroxide to generate hydroxyl radicals and consume glutathione, and can remarkably kill cancer cells by inducing a copper death mechanism in a tumor microenvironment. The material is unique in structure and excellent in catalytic performance, the preparation method is simple, convenient and controllable, and the material has wide application prospects in the fields of tumor catalytic treatment, bionic sensing and the like.

The invention discloses a synthesis method of monodisperse urchin-shaped CdS, which comprises the following steps: S1, adding deionized water, a cysteine solution and a chromium salt solution into a reaction container, stirring and mixing, and introducing N2; s2, adding a sodium citrate solution into the solution obtained in the step 1, and stirring and mixing; s3, dropwise adding an alkaline solution into the mixed solution obtained in the step 2, and adjusting the pH value of the solution to 9-11; and S4, heating the solution of which the pH is adjusted in the step 3, and performing reflux reaction to obtain the sea urchin-shaped CdS. By adding a first ligand (cysteine), Cd < 2 + > is fixed in a (cysteine-Cd < 2 + >) n coordination polymer, so that the reaction activity of a precursor can be reduced, and a nucleation process occurs under a mass action law in the initial stage of reaction; and secondly, for the formed CdS, through combination of a second ligand (sodium citrate), electrostatic repulsion and steric hindrance effect between the CdS are remarkably increased, so that adsorption and fusion between the CdS are avoided.

The invention discloses a method for removing trace or trace N-nitrosodimethylamine in water by using a self-assembled metal coordination polymer catalytic membrane. The self-assembled metal coordination polymer catalytic membrane material is added into a reaction flask of an N-nitrosodimethylamine solution subjected to nitrogen deoxidation treatment, the amount of loaded zero-valent iron is 25.7 mg / g to 171.4 mg / g, and the initial concentration of N-nitrosodimethylamine is 47.4 mu g / L to 196.5 mu g / L. The reaction bottle is sealed and then placed on a multi-point intelligent magnetic stirrer for magnetic stirring reaction, the rotating speed is 200 rpm, the temperature is 25 DEG C, the pH is 2.5-9.5, and stirring is conducted for 1.5 h. A carboxylated high-molecular polyacrylonitrile membrane is used as a base material, poly (diallyldimethylammonium chloride) polycation and polyacrylic acid polyanion electrolyte are assembled on the surface of the base membrane by adopting an electrostatic self-assembly technology, and the high-molecular self-assembled composite membrane with a large number of carboxyl groups is prepared. And preparing the self-assembled metal coordination polymer catalytic membrane through a metal-polycation electrolyte coordination technology and a classical liquid phase reduction method. The content of iron in the self-assembly metal coordination polymer catalytic membrane and the thickness of a surface functional layer are conveniently and effectively regulated and controlled by controlling the number of assembly layers, the concentration of iron ions in coordination reaction, the pH value of the solution and the like, high activity and stability are kept, and the method has the advantages of being simple in preparation process, low in cost, high in removal rate and the like.

The invention discloses an amorphous coordination polymer membrane for gas separation and a preparation method and application thereof.HTPHPB is adopted as an amphiphilic template, a hydrophilic pyridine group and a hydrophobic hexaphenylbenzene core spontaneously form a monomolecular layer at an interface, coordination is carried out on the monomolecular layer and dissolved cobalt ions, and therefore the amorphous coordination polymer membrane is formed. A firm coordination polymer network is constructed, so that subsequent ligand assembly is guided; by injecting an ultra-diluted growth solution of pyrazine and potassium tetracyanonickelate, homogeneous nucleation in a water phase is inhibited, nucleation particle attachment is reduced, and finally the defect-free amorphous aZJU-74 ultrathin film is formed.

This invention provides an ultramicroporous porous coordination polymer, its preparation method, and its application in the adsorption and separation of carbon dioxide, relating to the field of novel materials for gas-phase adsorption and separation. The material is named TCE-NH2ipa, with the chemical formula [Co2(bpt)2(NH2ipa)2]. n In this method, Co represents the metal center cobalt, bpt represents the organic ligand 4-(3-pyridin-4-yl-1H-1,2,4-triazol-5-yl)pyridine, and NH2ipa represents the organic ligand 3-aminoisophthalic acid. The method involves fully dissolving bpt, NH2ipa, and Co(NO3)2·6H2O, transferring the solution to a pressure-resistant sealed container, and heating it for reaction. After the reaction is complete, solvent exchange and heating activation steps are performed to finally obtain a homogeneous powdered material. The TCE-NH2ipa material of this invention exhibits good adsorption capacity for carbon dioxide, hardly adsorbs nitrogen at room temperature and pressure, and can selectively adsorb carbon dioxide in an acetylene / carbon dioxide mixture, demonstrating excellent selectivity and scalability.

This invention belongs to the field of fertilizer additive technology, specifically relating to a Cu-containing additive. Ⅱ The coordination polymers, preparation methods, and applications are described. The preparation methods include: synthesizing N,N'-bis(3-pyridinecarboxamide)-1,2-ethane using nicotinic acid and 1,2-ethylenediamine as raw materials; and synthesizing Cu-containing polymers from N,N'-bis(3-pyridinecarboxamide)-1,2-ethane, CuCl2·2H2O, and 1,4-cyclohexane using a hydrothermal method. Ⅱ The coordination polymer [Cu(1,4-chdc)(3-dpye)]·3H2O is a blue crystal. The product prepared in this invention is used as a fertilizer additive in urea to reduce the conversion of urea N to ammonium nitrogen and ammonium nitrogen to nitrate nitrogen during urea application, thereby reducing the volatilization of NH3 into the air after urea application and the subsequent volatilization of N2O.