374 results about "Trimesic acid" patented technology

The invention discloses a hydrogel thin layer-foam-based solar evaporator and a preparation method and application thereof, and belongs to the field of water treatment. The invention provides a hydrogel thin layer-foam-based solar evaporator. The hydrogel thin layer-foam-based solar evaporator comprises a foam substrate, a photo-thermal layer and a hydrogel thin layer, a photo-thermal layer and a hydrogel thin layer are sequentially coated on the foam substrate, or the photo-thermal layer, the hydrogel thin layer and the photo-thermal layer are sequentially coated on the foam substrate. The photo-thermal layer is made of a carbon-based indium material and is obtained by mixing an indium nitrate solution and a trimesic acid solution, preparing a precursor through a hydrothermal method and calcining the precursor in a protective atmosphere. The hydrogel thin layer-foam-based solar evaporator has efficient evaporation rate and energy utilization efficiency, and under irradiation of one sun, the FCH evaporation rate and the energy efficiency are 7.93 kgm <-2 > h <-1 > and 315% respectively; in addition, the compound also shows excellent salt resistance in 3.5-20wt.% of saline water, and also has a relatively high evaporation rate in acid-base and various dye sewage.

The invention discloses self-adhesion-crosslinking double modified bamboo powder, a preparation method and application, and relates to the technical field of composites.The preparation method of the modified bamboo powder comprises the following steps that S1, bamboo powder, 2, 5-dihydroxyterephthalic acid, 4-aminobenzoyl hydrazine, N, N '-diisopropylcarbodiimide and tris (hydroxymethyl) aminomethane are mixed for a reaction; and S2, trimesic acid is added into the solution obtained after the reaction in the S1 for a reaction, filtering, washing and drying are conducted, and the self-adhesion-crosslinking double modified bamboo powder is obtained. The prepared modified bamboo powder is green and environmentally friendly, through a self-adhesion mechanism, a cross-linking mechanism, a branched-chain phenyl heterogeneous nucleation mechanism and the like, the interfacial compatibility of PBAT and the bamboo powder and the crystallinity of PBAT are improved, and therefore the mechanical property of PBAT / bamboo powder is enhanced.

The invention relates to the technical field of polymer electrolyte, in particular to a self-repairing type gel polymer electrolyte membrane, a preparation method and application in an energy storage battery, the self-repairing type gel polymer electrolyte membrane is prepared by the following steps: dissolving amino-terminated polyethylene glycol in an organic solvent, adding trimesic acid under the protection of an inert atmosphere, heating, stirring and reacting to form a pre-polymerized solution, cooling, and then adding trimesic acid into the pre-polymerized solution to prepare a self-repairing type gel polymer electrolyte membrane; the preparation method comprises the following steps: adding glyoxylic acid and glacial acetic acid, carrying out a constant temperature reaction to obtain a solution A, adding LiTFSI into the solution A, carrying out ultrasonic dispersion to a homogeneous phase, pouring the obtained slurry onto a template, and carrying out a drying curing reaction to obtain the self-repairing gel polymer electrolyte membrane. A rigid aromatic cross-linking agent is used for inhibiting polymer crystallization and improving mechanical integrity, an imine bond-based dynamic covalent network is introduced to realize an autonomous interface repairing function at the working temperature of the battery, and meanwhile, a polyethylene glycol ether oxygen chain is used for constructing an efficient lithium ion transmission channel; therefore, the technical boundary that the conductivity, the mechanical strength and the interface stability of the traditional GPE are difficult to collaboratively optimize is broken through.

The invention relates to the technical field of electro-catalysis and hydrogen energy, in particular to a modified LDH-based catalyst and a preparation method and application thereof. The preparation method comprises the following steps: mixing trimesic acid, water, an organic solvent, a nickel salt, a cobalt salt and an iron salt, carrying out electro-deposition, washing and drying to obtain a NiFeCo-LDH (TA) catalyst; the preparation method comprises the following steps: soaking a NiFeCo-LDH (TA) catalyst in a silver salt solution, washing and drying to obtain the modified LDH-based catalyst. The modified LDH-based catalyst provided by the invention can effectively resist chloride ion corrosion and inhibit dissolution of active metals in layered double hydroxides (LDH) under high current density in seawater, can reach industrial grade current density under relatively low overpotential, and can stably run for more than 1000 hours.

The invention discloses preparation of a high-performance carbon matrix embedded iron-based catalyst based on a metal organic framework precursor and application of the high-performance carbon matrix embedded iron-based catalyst in reverse water-gas shift reaction. In the preparation process, commercially available 1, 3, 5-trimesic acid iron (the chemical formula is C9H3FeO6, abbreviated as Fe-BTC) is selected as a raw material, pyrolysis treatment is carried out in an argon atmosphere, then air passivation is carried out, and finally the high-performance carbon matrix embedded iron-based catalyst based on the metal organic framework precursor is successfully prepared. The MOF-600 has excellent performance in many catalysts, the carbon dioxide production rate reaches 24.0 mmol CO.gcat <-1 >. S <-1 > at the temperature of 400 DEG C in a reverse water gas shift reaction, the performance is remarkably superior to that of an existing non-noble metal catalyst, and extremely high catalytic efficiency and application potential are shown.

The invention relates to the field of MOF-based flexible thermoelectric materials, and discloses n-type MOF-based high-performance thermoelectric foam with ductility and a preparation method and application thereof, and the method comprises the following steps: dissolving 1, 3, 5-trimesic acid and copper acetate in a mixed solution of N, N-dimethylformamide, ethanol and deionized water to prepare a precursor solution; soaking foamed nickel in the precursor solution for hydrothermal reaction, then taking out, cleaning and drying to obtain a foamed nickel material with nickel-copper MOF uniformly grown on the surface; and soaking the foamed nickel material in a mixed solution of polyaniline and DMF (Dimethyl Formamide) so as to graft a conductive polymer on the surface and pore channels of the nickel-copper MOF, thereby obtaining the high-performance thermoelectric foam with ductility. The n-type MOF-based thermoelectric foam prepared by the invention has excellent ductility and thermoelectric performance, and also has the characteristics of metal plasticity, efficient thermoelectric performance and sensitivity to temperature change. The excellent thermoelectric performance and wide application scene of the material are far better than those of the currently reported n-type MOF-based thermoelectric material.

The present invention provides a manganese metal-organic framework material with oxidase properties, a preparation method, and an application thereof. The material is prepared by the following method: using 1,3,5-trimethic acid as an organic ligand, manganese acetate tetrahydrate as a manganese source, and a water-ethanol solution as a solvent, to obtain a manganese metal organic framework (MOF) precursor via a solvothermal synthesis technique; the manganese MOF precursor is post-synthetically modified using an oxidant, wherein the oxidant is a mixed solution of an aqueous alkali metal hydroxide solution and H2O2, and the ratio of the manganese MOF precursor to the alkali metal hydroxide is (400-600) mg:(0.5-2) mmol. By using specific types and amounts of manganese MOF precursors and oxidants, the resulting metal-organic framework nanomaterial has specific enzyme-like properties, can exert the function of uricase, and has optimal and high uricase activity under neutral pH conditions.

The invention relates to the technical field of building materials, and particularly discloses interior wall waterproof putty powder and a preparation method thereof. Interior wall water-resistant putty powder is prepared from sulphoaluminate cement, nano heavy calcium powder, silica fume, a double-MOF composite nanotube, modified diatomite, polypropylene fiber, nano titanium dioxide, a defoaming agent, a dispersing agent and a mildew preventive, and the double-MOF composite nanotube is obtained by loading copper trimesic acid in an inner cavity of a halloysite nanotube and loading dimethyl imidazole cobalt on the outer wall of the halloysite nanotube; the modified diatomite is obtained by modifying diatomite with stearic acid. The interior wall waterproof putty powder provided by the invention adopts the double-MOF composite nanotube as a core functional material, and under the synergistic effect of multiple components, the water resistance and air permeability of a putty layer are effectively enhanced.

The invention relates to the technical field of electrocatalysts, and discloses a heterojunction catalyst composed of cobalt-copper co-doped ruthenium dioxide and metal ruthenium as well as a preparation method and application of the heterojunction catalyst. The preparation method comprises the following steps: carrying out hydrothermal reaction on cobalt salt and trimesic acid in a mixed solvent to prepare a cobalt metal organic framework precursor; a cobalt-copper bimetal organic framework is obtained through ion exchange of a copper salt solution; preparing a ruthenium-cobalt-copper ternary metal organic framework by adopting secondary ion exchange of a ruthenium salt solution; and carrying out air calcination treatment to obtain the cobalt-copper co-doped ruthenium dioxide and metal ruthenium heterojunction catalyst. According to the method, cobalt and copper atoms are uniformly doped in ruthenium dioxide crystal lattices through a step-by-step ion exchange strategy, and metal ruthenium nano-particles are grown on the surface in situ to form a heterogeneous interface. The obtained catalyst shows excellent performance in an acidic electrolyzed water anode oxygen evolution reaction, the overpotential is only 199 mV under the current density of 10 mA. Cm, and the stability can be maintained for 40 hours.

The invention belongs to the technical field of chiral boron compound synthesis, and particularly relates to an MOF-Cu (II) / CMC composite material and a preparation method and application thereof. The preparation method of the MOF-Cu (II) / CMC composite material comprises the following steps: dropwise adding an aqueous solution of sodium carboxymethyl cellulose into an aqueous solution of bivalent copper salt, carrying out solid-liquid separation, mixing obtained composite microspheres and an organic solution of trimesic acid, heating, and carrying out solid-liquid separation to obtain the MOF-Cu (II) / CMC composite material. The composite material is applied to an asymmetric chiral boron addition reaction, the reaction is carried out at room temperature, the conditions are mild, the use range of a substrate is wide, and the yield and enantioselectivity are high. According to the method, the chiral organic boride can be synthesized in a simple component solvent, an efficient new method is provided for preparation of drug molecules and active intermediates, the substrate range of preparation of the chiral organic boride is widened, and the method has important theoretical and practical significance.

The invention discloses a high-strength light-absorbing heating fiber and a preparation method thereof, and relates to the technical field of functional fiber preparation. The high-strength light-absorbing heating fiber prepared by the invention is prepared by mixing modified polyesteramide and nano microcapsules and then carrying out melt spinning, the modified polyesteramide fiber is prepared by melting and spinning modified polyesteramide, and the modified polyesteramide is prepared by reacting cross-linked maleic anhydride, diisopropanolamine and trimethylolpropane to form hyperbranched polyesteramide and then reacting the hyperbranched polyesteramide with trimesic acid, so that the heat resistance and the strength of the modified polyesteramide are enhanced; the nano microcapsule is prepared by coating mesoporous melamine resin on the surface of nano powder, and the nano powder comprises far infrared ceramic powder and nano zirconium carbide, so that the heat resistance and strength of the light-absorbing heating fiber are further enhanced.

The invention discloses a copper-based MOF derived carbon-MgH2 composite solid hydrogen storage material and a preparation method thereof.The preparation method comprises the steps that 1, metal inorganic salt is dissolved in deionized water, stirring is conducted till reactants are dissolved, and a solution a is obtained; 2, trimesic acid is dissolved in a solution composed of N, N-dimethylformamide and methanol according to the volume ratio of 1: 1, ultrasonic treatment is conducted, and a solution b is obtained; 3, mixing and stirring the solution a and the solution b to obtain a mixed solution; step 4, adding the mixed solution into a reaction kettle for reaction, and after the reaction, performing furnace cooling overnight to room temperature; 5, a first product obtained after the reaction is washed with N, N-dimethylformamide and methyl alcohol for multiple times, and drying is conducted to obtain a Cu-based MOFs material; and 6, the dried Cu-based MOF material and MgH2 are mixed and subjected to ball milling, and the MOF catalyzed magnesium-based composite hydrogen storage material is obtained. The synthesis is simple, the reaction condition is mild, and the introduction of the copper-based MOF effectively improves the hydrogen absorption / desorption behavior of the MgH2 hydrogen storage material.

The invention discloses a preparation method of a sulfur-doped near-infrared carbonized polymer for detecting mercury ions and detection application of the sulfur-doped near-infrared carbonized polymer, and the preparation method is characterized by comprising the following specific steps: dissolving 1-4 mmol of o-phenylenediamine, 1 mmol of trimesic acid and 1-4 mmol of 4-aminothiophenol in deionized water, adding 200-600 mu L of concentrated sulfuric acid, performing ultrasonic treatment, transferring into a polyethylene tetrafluoro lining, heating at 200-230 DEG C for 6-8 hours, cooling to room temperature, filtering, washing, and drying to obtain the sulfur-doped near-infrared carbonized polymer for detecting mercury ions. And after the reaction kettle is naturally cooled to the room temperature, carrying out continuous dialysis for 24-48 hours by adopting a 1000 Da dialysis bag to remove unreacted impurities, and freeze-drying for 24-48 hours under the conditions that the temperature is-20-30 DEG C and the pressure is-0.1-0.01 Pa to obtain black particles, namely the sulfur-doped near-infrared carbonized polymer for detecting mercury ions. The sulfur-doped near-infrared carbonized polymer for detecting mercury ions has the advantages of strong stability, good selectivity, high sensitivity and high accuracy.

The invention discloses Pseudomonas putida, a bacterial agent thereof and an application of the Pseudomonas putida in chemical wastewater treatment, the Pseudomonas putida is named as PH-20 and preserved in the China General Microbiological Culture Collection Center on March 17, 2025, and the preservation number of the strain is CGMCC No. 33831. The invention further discloses a preparation method of the Pseudomonas putida. The pseudomonas putida disclosed by the invention can be used for rapidly degrading polybenzoic acid such as terephthalic acid, phthalic acid, isophthalic acid, trimellitic acid, trimellitic acid and pyromellitic acid in wastewater under the conditions of high salt and low temperature, and the degradation effect is still excellent under the condition that various pollutants coexist.

The present invention discloses a method for preparing a glass fiber diaphragm modified with a bismuth-based metal organic framework material, comprising: (1) using bismuth nitrate pentahydrate and trimesic acid as raw materials, and synthesizing a bismuth-based metal organic framework material by solvent thermal reaction; (2) adding the bismuth-based metal organic framework material prepared in step (1) and polyvinylidene fluoride to an N-methylpyrrolidone solution for mixing; (3) modifying the mixed solution obtained in step (2) onto a glass fiber diaphragm by a suction filtration method, and obtaining a glass fiber diaphragm modified with a bismuth-based metal organic framework material after drying. The present invention also discloses a glass fiber diaphragm modified with a bismuth-based metal organic framework material obtained by the above-mentioned preparation method and its application in a zinc ion battery. The glass fiber diaphragm modified with a bismuth-based metal organic framework material provided by the present invention can improve its electrochemical performance when applied to a zinc ion battery, thereby solving the problem of poor cycle performance of ordinary glass fiber diaphragms applied to aqueous batteries.

The invention belongs to the technical field of hydrogen storage material preparation, and specifically relates to a magnesium-based hydrogen storage composite material based on Ti-MOF and a preparation method thereof. A Ti source is added to a mixed solvent of ethanol and toluene to obtain a first solution; tetrabutylammonium chloride is added to ethanol to obtain a second solution; trimesic acid is added to a mixed solvent of ethanol and toluene, a pH regulator is added to obtain a third solution, the second solution is dripped into the first solution to obtain a fourth solution; under ultrasonic stirring conditions, the fourth solution is dripped into the third solution to obtain Ti-MOF, the Ti-MOF is mixed with spherical MgH2 powder to obtain a magnesium-based hydrogen storage composite material based on Ti-MOF. The invention introduces a multifunctional Ti-MOF additive by a simple method, and simultaneously realizes the multi-functional effects of a crushing agent, a nanocatalyst and an agglomeration inhibitor.

The invention provides a preparation method of a NiCo-MOF / MXene-CNF aerogel composite material. The preparation method comprises the following steps: S1, adopting LiF and hydrochloric acid to etch MAX phase powder to prepare an MXene dispersion liquid; s2, mixing and freezing the MXene dispersion liquid and nano cellulose into ice, and drying to obtain MXene-CNF aerogel; s3, N, N-dimethylformamide, deionized water, alcohol, NiCl2. 6H2O, CoCl2. 6H2O, trimesic acid and polyvinyl pyrrolidone are mixed, and a mixed solution is obtained; s4, after the mixed solution is subjected to ultrasonic dispersion, the MXene-CNF aerogel is added, the mixture is placed in a drying oven at the temperature of 120 DEG C to 200 DEG C to react for 6 h to 14 h, and the NiCo-MOF / MXene-CNF aerogel composite material is obtained. NiCo-MOF with a two-dimensional nanosheet structure is grown on the surface of MXene-CNF aerogel with a three-dimensional structure in situ to form the NiCo-MOF / MXene-CNF aerogel composite material with a three-dimensional porous network structure, and the composite material effectively avoids irreversible agglomeration and self-stacking phenomena of an MXene material and provides an efficient channel for migration of electrolyte ions; compared with the pure MXene-CNF aerogel, the NiCo-MOF / MXene-CNF aerogel composite material has more excellent mass specific capacitance and charge storage capability.

The invention discloses a BTCP-Ac-Eu-MOF double-fluorescence-emission fluorescent probe as well as a preparation method and application thereof, and belongs to the technical field of detection probes. The preparation method comprises the following steps: synthesizing BTCP from salicylic acid and 2-aminothiophenol to obtain a product 1, and reacting the product 1 with acetic anhydride and triethylamine to obtain BTCP-Ac; the preparation method comprises the following steps: mixing europium nitrate hexahydrate and trimesic acid, and performing high-temperature reaction to obtain Eu-MOF powder; and the BTCP-Ac and the Eu-MOF are mixed, such that the BTCP-Ac / Eu-MOF dual-fluorescence emission fluorescent probe is obtained. The europium metal organic framework has a clear structure, ultrahigh porosity and a designable function, the europium metal organic framework is combined with AIE fluorescent molecules to enhance the performance of the europium metal organic framework, and the fluorescence of the europium metal organic framework can be used as a colorimetric reference, so that the function of sensitively, quickly and conveniently indicating the freshness of meat products is realized.

The invention discloses a preparation method and application of a novel metal-organic framework structure composite material based on fly ash and steel slag, and belongs to the technical field of environmental geotechnical .The preparation method comprises the following steps that aluminum chloride is prepared from fly ash, nanoscale Fe3O4 is prepared from steel slag, and the novel metal-organic framework structure composite material PVA-Fe3O4-Al-MOF is synthesized, the preparation method comprises the following steps: dispersing aluminum chloride into dimethylformamide, and then adding nanoscale Fe3O4 to obtain an aluminum chloride-dimethylformamide-ferroferric oxide mixed solution; the preparation method comprises the following steps: dissolving trimesic acid in dimethylformamide to obtain a trimesic acid-dimethylformamide solution; putting the aluminum chloride-dimethylformamide-ferroferric oxide mixed solution and the trimesic acid-dimethylformamide solution into a reaction kettle, heating to react for a period of time, and then carrying out solid-liquid separation to obtain Fe3O4 (at) Al-MOF; adding the Fe3O4 (at) Al-MOF into an aqueous solution of polyvinyl alcohol, soaking for a period of time, and then filtering to obtain PVA-Fe3O4 (at) Al-MOF;

The invention provides a DESs modified GO (at) MOF808 composite material, and the DESs modified GO (at) MOF808 composite material is prepared by the following steps: modifying the composite material GO (at) MOF808 with DESs to obtain GO (at) MOF-808 (at) DESs; the GO-coated MOF808 is prepared from the following raw materials in parts by weight: 56 to 84 parts of ZrCl4, 18.4 to 27.6 parts of trimesic acid (H3BTC) and 12 to 18 parts of graphene oxide (GO). The invention further discloses a preparation method of the GO-coated MOF808. The invention also provides a preparation method of the composite material, and a method for detecting the content of tolcapone and entacapone in an environment. According to the invention, the DES-modified GO-coated MOF808 composite material is used as an adsorption matrix, and the adsorption capacities of the adsorption material to entacapone and tolcapone can reach up to 86.50 + / -4.79 mg / g and 126.21 + / -2.72 mg / g; the method for removing and detecting entacapone and tolcapone in water by combining D-muSPE with DES (at) GO (at) MOF808 as an adsorption material with LC-MS / MS is simple to operate, high in sensitivity and high in removal rate.

The invention discloses a preparation method of a hydrophobic modified copper-based monatomic catalyst. The preparation method comprises the following steps: S1, dissolving Cu (NO3) 2 and L-alanine in deionized water; dissolving trimesic acid in an ethanol solution; s2, mixing the two solutions, and stirring at regular time at normal temperature to obtain a Cu-BTC precursor; s3, grinding and uniformly mixing the Cu-BTC precursor and dicyandiamide, and then putting the mixture into a tubular furnace for high-temperature pyrolysis treatment to obtain Cu-N-C-Pre powder; s4, the Cu-N-C-Pre powder is subjected to acid leaching impurity removal treatment in an acid solution, and the copper-based monatomic catalyst is obtained; and S5, dissolving the Cu-N-C catalyst and triacetylene benzene in an organic solvent, adding pyridine, uniformly stirring, and carrying out a hydrothermal reaction to obtain the hydrophobic modified copper-based monatomic catalyst. Hydrophobic modification is performed on the surface of the Cu-N-C monatomic catalyst, so that the hydrophobicity of the surface of the catalyst is enhanced, the catalytic activity of the catalyst in a reaction for preparing phenol by activating a benzene C-H bond by taking H2O2 as an oxidizing agent is improved, and the yield of phenol is increased.

The invention discloses a preparation method and application of immobilized laccase at room temperature, and the preparation method comprises the following steps: step 1, weighing laccase, dissolving the laccase in a sodium acetate-acetic acid buffer solution, carrying out magnetic stirring, and then adding a sodium hydroxide solution containing trimesic acid to form a mixed solution; step 2, adding an aqueous solution containing ferric ions into the mixed solution, magnetically stirring, standing and aging in a refrigerator, and centrifugally collecting a solid product; and step 3, re-suspending the washed precipitate in a polyvinylpyrrolidone aqueous solution, fully dispersing, and then drying to obtain the immobilized laccase, which is recorded as Lacc-Fe-BTC. The immobilized laccase prepared by the invention can be used for rapidly and efficiently degrading aflatoxin B1 and zearalenone, and recycling and reutilization of the enzyme after reaction can be realized.

The invention provides a manganese metal organic framework material with oxidase characteristics as well as a preparation method and application thereof, and the material is prepared by the following method: taking 1, 3, 5-trimesic acid as an organic ligand, manganese acetate tetrahydrate as a manganese source and a water-ethanol solution as a solvent, and obtaining a manganese MOFs precursor through a solvothermal method synthesis technology; the manganese MOFs precursor is subjected to post-synthesis modification with an oxidizing agent, the oxidizing agent is a mixed solution of an alkali metal hydroxide aqueous solution and H2O2, and the dosage ratio of the manganese MOFs precursor to the alkali metal hydroxide is (400-600) mg: (0.5-2) mmol. The manganese MOFs precursor and the oxidizing agent with specific types and using amounts are adopted, so that the obtained metal organic framework nano material has specific enzyme-like characteristics, can play a role of urate oxidase, has optimal urate oxidase activity under a neutral pH condition, and is relatively high in activity.

The invention belongs to the technical field of functional nano composite materials, and particularly relates to a synthetic method of a surface octahedral oxygen vacancy double-shell Co3O4 catalyst with high electro-catalysis chlorine evolution selectivity. Comprising the following steps: firstly, mixing cobalt nitrate hexahydrate, trimesic acid, ethanol and an ethylene glycol solvent according to a certain proportion, and carrying out solvothermal reaction to obtain a spherical Co-BTC precursor; and then the prepared Co-BTC precursor is annealed and oxidized for 1-3 h in air at a certain annealing rate of 1-5 DEG C / min in an environment of 300-500 DEG C, and the hollow double-shell structure material DS-Co3O4 is obtained. Finally, DS-Co3O4 and a sodium borohydride solution are mixed, soaked and stirred for 1-3 h, the double-shell Co3O4 nanospheres with octahedral oxygen vacancies and a multilevel structure are obtained, and high-selectivity electro-catalysis chlorine evolution reaction can be achieved.

The invention discloses a fireproof composite material and a preparation method thereof, and belongs to the technical field of high polymer materials. The fireproof composite material comprises the following raw materials in parts by weight: 60-80 parts of epoxy resin, 20-30 parts of silicon dioxide, 10-18 parts of a flame retardant, 10-15 parts of a curing agent, 2-5 parts of a toughening agent, 1-2 parts of an accelerant and 1-3 parts of an antioxidant. The toughening agent is prepared by reacting trimesic acid with oleyl alcohol to generate a triester compound, reacting 1, 4-benzene diboric acid with 3-sulfydryl-1, 2-propylene glycol to generate a dioxaboroheterocyclic compound, and reacting the triester compound with the dioxaboroheterocyclic compound. The fireproof composite material prepared by the invention has good flame retardant property and impact resistance.

The invention relates to a fluoro-ligand regulated metal organic framework material and a preparation method and application thereof, the fluoro-ligand regulated metal organic framework material is prepared and synthesized by using zirconium oxychloride as a metal node and trimesic acid / 5-fluoroisophthalic acid as an organic ligand through a reflux method; the unit structural formula of the fluorinated ligand metal organic framework material is [Zr6O4 (OH) 4 (BTC) 2-x (F-BTC) x (AA) y (H2O) z], according to the preparation method, trimesic acid and part of 5-fluoroisophthalic acid are co-coordinated, a C-F bond is introduced to regulate and control the electronic environment around a Zr node through deletion of a connecting site, uniform nucleation of crystals is promoted, the grain size of the obtained material is remarkably reduced, and the dispersity is higher.

The invention relates to the technical field of electrocatalytic reduction of carbon dioxide, and provides a water-phase ultrafast green preparation method of a bismuth-based metal organic framework, and the preparation method of the bismuth-based metal organic framework material comprises the following steps: taking bismuth nitrate pentahydrate as a bismuth source, taking trimesic acid as a ligand, and preparing the bismuth-based metal organic framework material through a surfactant-mediated sonochemistry method. A complex topological bismuth-based metal organic framework (CAU-17) is synthesized in water under an environmental condition. The synthesis method is rapid, environmentally friendly, low in cost and easy to operate, cetyltrimethylammonium bromide (CTAB) amphiphilic molecules are used as a structure inducer, removal (dehydration) of non-coordinated water is controlled, the deprotonation degree of ligands is improved, therefore, coordination and crystallization in an aqueous solution are adjusted, and by adjusting the dosage of the added CTAB, the deprotonation degree of the ligands is increased. And the crystal structure evolution from a preferentially generated compact sheet structure to a porous rod-shaped structure is realized. Meanwhile, the synthesized CAU-17 catalyst shows relatively high current density and Faraday efficiency in electrocatalytic reduction of carbon dioxide into formic acid, and has relatively good selectivity.

The present application belongs to the technical field of the synthesis of chiral boron compounds, and in particular relates to an MOF-Cu(II) / CMC composite material, and a preparation method therefor and the use thereof. The preparation method for an MOF-Cu(II) / CMC composite material of the present application comprises: dropwise adding an aqueous solution of sodium carboxymethyl cellulose to an aqueous solution of a bivalent copper salt, performing solid-liquid separation, mixing obtained composite microspheres with an organic solution of trimesic acid, heating the resulting mixture, and subjecting same to solid-liquid separation, so as to obtain an MOF-Cu(II) / CMC composite material. The MOF-Cu(II) / CMC composite material is used in an asymmetric chiral boron addition reaction. The reaction is performed at room temperature, involves mild conditions, is applicable to a wide range of substrates and has a high yield and enantioselectivity. Moreover, the method can achieve the synthesis of a chiral organic boride in a solvent having simple components, providing an efficient new method for the preparation of drug molecules and active intermediates, and also broadening the range of substrates used for the preparation of chiral organic borides.

The invention discloses a ruthenium-doped cobalt metal oxide nanosheet electrocatalyst and a preparation method and application thereof, and relates to the technical field of electrocatalysts.The preparation method comprises the steps that cobalt salt and trimesic acid are weighed and jointly dissolved in a methanol solution, and a mixed solution A is obtained after primary ultrasonic mixing treatment; dropwise adding a methanol solution containing ruthenium salt into the mixed solution A, carrying out secondary ultrasonic mixing treatment to obtain a mixed solution B, and carrying out hydrothermal reaction on the mixed solution B to obtain a ruthenium-cobalt metal organic framework precursor; and calcining the ruthenium-cobalt metal organic framework precursor. Compared with the prior art, the ruthenium-doped cobalt metal oxide nanosheet electrocatalyst prepared by the method shows excellent hydrogen evolution electrocatalytic activity and stability in an alkaline water electrolysis reaction, the performance of the catalyst is superior to that of a commercial platinum-carbon catalyst, and stable potential output can be kept in a 100-hour continuous test without obvious attenuation.

The invention discloses a metal organic framework (MOF) derived Fe / Mn composite material and a preparation method and application thereof.The preparation method comprises the following steps that 1, Fe (NO3) 3.9 H2O, Mn (NO3) 2.4 H2O and trimesic acid C9H6O6 are mixed and stirred to be uniform according to a preset molar ratio, and mixed powder a is obtained; step 2, adding a preset volume of N, N-dimethylformamide (DMF) into the mixed powder a, and carrying out magnetic stirring reaction to obtain a solution b; step 3, putting the solution b into a reaction kettle, and reacting for 10 to 12 hours at the temperature of 160 to 180 DEG C, so as to obtain an organic framework material MIL-100 (Fe-Mn); and step 4, grinding the organic framework material MIL-100 (Fe-Mn) to a preset particle size, and calcining the organic framework material MIL-100 (Fe-Mn) in an N2 atmosphere at a temperature of 800 DEG C for 2-3 h to obtain the target MOF-derived Fe / Mn composite material. The invention aims to prepare a catalyst which can be used for degrading bisphenol A (BPA) in organic wastewater.