207 results about "Trimesic acid" patented technology

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 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 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 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 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 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 provides a Z-type heterojunction material for synchronously removing phosphorus and tetracycline in sewage. The material is composed of a hexagonal flaky nano magnesium-aluminum-iron hydrotalcite matrix with the size of 30-100 nm and a metal oxide growing on the surface. The preparation method of the material comprises the following steps: carrying out hydrothermal treatment on magnesium-aluminum-iron hydrotalcite and trimesic acid in N-N dimethylformamide liquid, growing a metal organic framework compound on the surface of the magnesium-aluminum-iron hydrotalcite in situ through dissolved-out metal ions and trimesic acid, and roasting the metal organic framework compound to obtain the Z-type heterojunction material. The Z-type heterojunction material can synchronously and efficiently remove phosphorus and tetracycline in sewage, the synchronous removal rates of 50 mg of the material to phosphorus and tetracycline are 97.60% and 95.47% respectively in 100 mL of a phosphorus (concentration of 25 mg / L) water sample and a tetracycline (concentration of 50 mg / L) water sample, and the synchronous removal rates of phosphorus and tetracycline are still 87.62% and 85.57% after continuous circulation for five times. The Z-type heterojunction material can be applied to the aspect of phosphorus and tetracycline mixed sewage treatment in the breeding industry.

The invention provides metal organic framework loaded guanidyl polymer nanoparticles as well as a preparation method and application thereof. The nanoparticles comprise a copper-based metal-organic framework material and a guanidyl-containing polymer loaded on the surface of the copper-based metal-organic framework material; the copper-based metal-organic framework material comprises a copper trimesic acid complex, the copper trimesic acid complex has a porous structure and an octahedral structure, and the guanidyl-containing polymer is distributed in the porous structure and on the surface of the octahedral structure; the nanoparticles are insoluble in water, and the particle size of the nanoparticles is nanoscale. When the antibacterial agent is added into the resin, the non-dissolution antibacterial coating can be prepared, the guanidyl-containing polymer is not easy to dissolve out, the antibacterial coating is endowed with good antibacterial property, and the problems that the hydrophilic guanidyl-containing polymer and the coating resin are poor in compatibility and easy to leach out are solved.

The invention discloses a metal oxide / carbon / nickel composite material, a preparation method and application of the metal oxide / carbon / nickel composite material to a magnesium-based hydrogen storage material, and belongs to the field of hydrogen storage energy. The problems that a single-component catalyst in the MgH2 hydrogen storage material is low in active site, the interface is inactivated in the circulation process and the like are solved. A metal nickel source and a cerium source are combined with an organic ligand trimesic acid to form bimetal MOF, CeO2 / C / Nix obtained after calcination inherits the high specific surface area of MOF, metal is evenly dispersed in a carbon matrix, CeO2 / C / Nix is introduced into MgH2, microscale efficient catalysis of MgH2 is achieved, when the doping amount of CeO2 / C / Ni20 is 8 wt.%, the initial dehydrogenation temperature is 188.23 DEG C, and when the doping amount of CeO2 / C / Ni20 is 8 wt.%, the initial dehydrogenation temperature is 188.23 DEG C, and the specific surface area of CeO2 / C / Nix is 27.8 wt.%. After 10 cycles, the capacity retention rate is 98.8%, excellent hydrogen storage performance is shown, and a unique insight is provided for large-scale production of the magnesium-based hydrogen storage material.

The present invention discloses a copper-containing hydrogen-bond organic framework material, a preparation method, and an application thereof. The method comprises the following steps: mixing trimesic acid, melamine, and a copper salt and dispersing them in a solvent to obtain a mixed suspension; transferring the mixed suspension to a reactor for reaction to obtain a copper-containing hydrogen-bond organic framework material solution; cooling the copper-containing hydrogen-bond organic framework material solution, centrifuging it, and then post-treating the copper-containing hydrogen-bond organic framework material solid obtained by centrifugation to obtain a copper-containing hydrogen-bond organic framework material with a one-dimensional rod-shaped structure. When used in the thermal decomposition catalysis of ammonium perchlorate, the copper-containing hydrogen-bond organic framework material prepared by the present invention can exhibit high catalytic activity and stability, thereby concentrating the exothermic temperature range and heat release of ammonium perchlorate.

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.

The application relates to a preparation method of a composite semiconductor photocatalyst and application thereof, and comprises the following steps: preparing g-C3N4 nanosheets; dispersing the prepared g-C3N4 nanosheets into methanol at a mass fraction of 10% to 70%, then adding 750 mg of trimesic acid and 150 mg of bismuth nitrate, and ultrasonic treating for 10 min to obtain a mixed suspension; transferring the mixed suspension into a microwave reaction kettle for reaction, the reaction temperature is 90 to 130 DEG C, the reaction time is 30 to 60 min, and centrifugal drying is carried out after the reaction is completed; then g-C3N4 / Bi-MOF is obtained through anhydrous methanol washing and freeze drying; a heterostructure is constructed, the energy band structure is changed, the charge transmission resistance is reduced, the photocatalytic activity is improved, the photocatalyst has two different structure and property photocatalytic activity centers, and the photocatalytic activity is changed from the energy band structure and the catalytic activity.

The present application relates to the technical field of building materials, and specifically discloses a water-resistant putty powder for interior walls and a preparation method thereof. A water-resistant putty powder for interior walls, the raw materials of which include: sulphoaluminate cement, nano-heavy calcium powder, silica fume, double MOF composite nanotubes, modified diatomaceous earth, polypropylene fiber, nano-titanium dioxide, defoaming agent, dispersant and mildew inhibitor. The double MOF composite nanotubes are obtained by loading copper trimesic acid in the inner cavity of halloysite nanotubes and loading dimethylimidazole cobalt on the outer wall; the modified diatomaceous earth is obtained by modifying diatomaceous earth with stearic acid. The water-resistant putty powder for interior walls of the present application uses double MOF composite nanotubes as the core functional material, and under the synergistic effect of multiple components, it effectively enhances the water resistance and air permeability of the putty layer.

The invention belongs to the technical field of crystal form drug molecules, and particularly relates to a baricitinib-trimesic acid eutectic crystal and a preparation method thereof. The baricitinib-trimesic acid eutectic crystal provided by the invention is good in stability and high in solubility, and has improved pharmacokinetics, so that subsequent development requirements of drugs are met; the preparation method is simple to operate, easy to control the crystallization process, good in reproducibility and suitable for industrial production.

The application discloses a kind of bimetallic MOFs material of mesoporous structure and its efficient synthesis and screening method, with vanadyl sulfate and iron nitrate hydrate as two metal center ion source, with uniform benzene tricarboxylic acid as ligand material preparation formation mesoporous structure bimetallic MOFs material, 1,3,5-uniform benzene tricarboxylic acid is dissolved in mixed solvent one and obtained solution A, the mixed solvent one is 1:1 mixed solvent of ethanol and DMF;Metal salt one and metal salt two are dissolved in water, and a certain amount of ammonium fluoride is added, and gel B is formed;The metal salt one is Fe (NO3) 3·9H2O, and the metal salt two is VOSO4;Solution A is mixed with gel B and forms gel C after stirring for a certain time;Gel C is centrifuged and separated, then washed with ethanol, and then soaked in dichloromethane for multiple times;The obtained product is dried first, then activated, and powder D is obtained.The application can be synthesized at room temperature with bimetallic MOFs material with more optimal mesoporous structure, improve the yield, stability and excellent performance of material.

The present invention belongs to the field of electrochemical biosensor technology, and discloses a non-enzyme glucose sensor electrode based on CuCo bimetallic organic framework material and its preparation and application. The electrode includes a foam copper substrate and a multi-walled carbon nanotube material (MWCNTs), a nanogold material and a CuCo bimetallic organic framework material sequentially loaded on the surface of the foam copper substrate. Its preparation method includes the steps of: mixing an aqueous solution of a divalent copper salt and a divalent cobalt salt and a dimethylformamide solution of trimesic acid, performing a hydrothermal reaction to prepare a CuCo bimetallic organic framework material (CuCo‑BTC), sequentially coating a multi-walled carbon nanotube (MWCNT) dispersion, a nanogold dispersion and a CuCo bimetallic organic framework material (CuCo‑BTC) dispersion on a foam copper (CF) surface to obtain a non-enzyme glucose sensor electrode (CuCo‑BTC / Au / MWCNT / CF). The non-enzyme glucose sensor prepared by the present invention has a wide detection range, high sensitivity, and has good anti-interference performance for uric acid, dopamine, ascorbic acid and cysteine.

The invention discloses a rapid hemostatic material, and belongs to the technical field of hemostatic materials, and the hemostatic material has low toxicity, low heat release and structural stability. The hemostatic material comprises a metal organic framework material or a mixture of a plurality of metal organic framework materials; the metal organic framework material is obtained by coordination of metal aluminum ions and organic ligands, and the organic ligands are selected from one or more of phthalic acid, isophthalic acid, trimesic acid, fumaric acid and other substances and derivatives thereof. Compared with a zeolite hemostatic material, the hemostatic material disclosed by the invention has the advantages of high hemostatic speed, mild hemostatic reaction and less heat release; compared with other metal organic framework hemostatic materials, the hemostatic material disclosed by the invention has the characteristics of high structural stability and high biocompatibility.

The invention discloses a method for synthesizing an HKUST-1 material from electroplating wastewater. The method comprises the following steps: mixing electroplating wastewater with trimesic acid, adding N, N-dimethylformamide to obtain a first mixed solution, diluting the first mixed solution with deionized water, and carrying out a coordination reaction on the diluted first mixed solution to obtain a reaction crude product; and mixing the reaction crude product with the N, N-dimethylformamide, and carrying out activating treatment, so as to obtain the HKUST-1. According to the method, the technical bottlenecks that a traditional room-temperature stirring method is long in stirring time and depends on multiple times of circulation are broken through, the single-time reaction time is shortened to 1 h, the energy consumption and the operation cost are remarkably reduced, the obtained HKUST-1 material can be further applied to the field of adsorption or catalysis, and an efficient solution is provided for high-value resource utilization of electroplating wastewater.

The present invention relates to the technical field of electrode foil pretreatment, and specifically to a pretreatment method for electrode foil, which comprises the following steps: S1, pickling of electrode foil; S2, organic liquid washing of electrode foil; S3, primary formation treatment; S4, treating the electrode foil with γ-methacryloxypropyltrimethoxysilane, polyvinylpyrrolidone, trimellitic acid, ethanol and deionized water; S5, secondary formation treatment; S6, tertiary formation treatment; S7, heating after drying. The electrode foil prepared by the present invention not only has low energy consumption and is convenient to process, but also has a high specific capacitance and a small leakage current for the prepared electrode foil.

The invention belongs to the technical field of battery materials, and provides a sea urchin-shaped Mn2O3 positive electrode material and a preparation method and application thereof. The preparation method comprises the following steps: mixing manganese acetate, polyvinylpyrrolidone and ethanol to obtain a mixed solution; mixing trimesic acid and ethanol to obtain a trimesic acid solution; mixing the mixed solution and a trimesic acid solution, heating and stirring to obtain a precursor; and calcining the precursor. The Mn2O3 positive electrode material provided by the invention has a sea urchin-shaped morphology, provides more reaction active sites, has a relatively high specific surface area, increases the contact area with an electrolyte, accelerates electrochemical reaction, and improves the electrochemical activity and structural stability of an aqueous battery; the sea urchin-shaped morphology is beneficial to relieving volume expansion caused by the positive electrode material in the charging and discharging process, and the cycling stability is improved; the preparation method is simple, raw materials are easy to obtain and low in cost, the method is simple, and the prepared sea urchin-shaped Mn2O3 positive electrode material is good in controllability and suitable for large-scale production.

The application discloses a dehydrogenation catalyst and a synthesis method and application thereof. The synthesis method of the catalyst comprises the following steps: (1) mixing soluble copper salt, soluble zinc salt and soluble aluminum salt with dichloromethane and ethanol to obtain a mixed solution containing copper, zinc and aluminum, and then adding polylactic acid and stirring to obtain a spinning solution; (2) using a coaxial electrostatic spinning nozzle to electrostatically spin the spinning solution obtained in the step (1) and collecting a solid; (3) placing the solid obtained in the step (2) in an ethanol solution of trimesic acid to perform a reaction, and then washing and drying the catalyst precursor after the reaction is completed; and (4) calcining and post-treating the catalyst precursor obtained in the step (3) to obtain the catalyst. The catalyst obtained by the method has high conversion rate and selectivity in the reaction of dehydrogenating 1,4-butanediol to prepare gamma-butyrolactone.

The invention discloses a 1, 3, 5-isopropyl trimellitate composite material and an application of the 1, 3, 5-isopropyl trimellitate composite material, and the 1, 3, 5-isopropyl trimellitate composite material is in a composite material form of 1, 3, 5-isopropyl trimellitate (SYZ) and metatitanic acid (TiO2.H2O). The obtained composite material shows relatively high specific capacity and certain cycle and rate performance, and can be used as a lithium ion battery negative electrode material.

The purpose of this invention is to synthesize a carbon dot-based nanozyme and its cascade detection application. Using ascorbic acid and 1,3,5-pyromellitic acid as raw materials, ethylenediamine as a nitrogen dopant, and ferric chloride as a metal source, a one-step microwave synthesis method is employed in a microwave reactor (glass material). This method solves the problem of high energy consumption caused by the need for high temperature, high pressure, or long reaction time in existing technologies. Characterization and analysis of its morphology, structure, and properties revealed that the prepared iron-nitrogen co-doped carbon dot-based nanozyme consists of two-dimensional spherical carbon nanoparticles with excellent Fe-N... x The active site exhibits POD-like enzyme activity, with catalytic activity exceeding that of most reported nanozymes. Furthermore, this invention synergistically utilizes its peroxidase-like catalytic activity and photodynamic effect to significantly enhance reactive oxygen species (ROS) generation, achieving highly sensitive detection of organophosphorus pesticides and significantly reducing their detection limits. This synergistic strategy provides a new approach for expanding the application of nanomaterials in chemical analysis and sensing.

The invention discloses a boric acid induced transition metal organic (MOF) long-afterglow material, a preparation method thereof and application of the boric acid induced transition metal organic (MOF) long-afterglow material in flexible transparent display, and belongs to the technical field of inorganic-organic co-doped long-afterglow materials. According to the method, trimesic acid is used as an organic ligand, and M < x + > is used as a metal center. M (NO3) x.yH2O and trimesic acid are dissolved in a mixed solution of CH3CN and H2O and react in a drying oven, and M-MOF crystals are recycled. M-MOF and boric acid are fully and uniformly mixed in distilled water according to different proportions, and the uniformly mixed solution is subjected to high-temperature dehydration and recrystallization to generate the glassy state boron oxide M-MOF long afterglow material (M-MOF BA). The preparation method is simple in process, environment-friendly and easy to obtain; the prepared long-afterglow material is stable in performance, afterglow emission under low-temperature, high-temperature and oxygen-free conditions can be achieved at the same time, the method for further obtaining flexible long-afterglow display through the method is simple, the condition is mild, and application of the long-afterglow material in various scenes is facilitated.

The present invention discloses a ruthenium-doped cobalt metal oxide nanosheet electrocatalyst, its preparation method and application, which relates to the technical field of electrocatalysts. The preparation method is as follows: Weigh cobalt salt and trimesic acid and dissolve them together in a methanol solution. After a first ultrasonic mixing treatment, a mixed solution A is obtained; Drop the methanol solution containing ruthenium salt into the mixed solution A. After a second ultrasonic mixing treatment, a mixed solution B is obtained. The mixed solution B is subjected to a hydrothermal reaction to obtain a ruthenium-cobalt metal-organic framework precursor; The ruthenium-cobalt metal-organic framework precursor is subjected to a calcination treatment. Compared with the prior art, the ruthenium-doped cobalt metal oxide nanosheet electrocatalyst prepared by the present invention exhibits excellent hydrogen evolution electrocatalytic activity and stability in the alkaline water electrolysis reaction. The performance of this catalyst is superior to that of commercial platinum-carbon catalysts, and it can maintain a stable potential output during continuous testing for 100 hours without obvious attenuation.