268 results about "Aminotroponiminate" patented technology

The invention discloses a preparation method and application of amino-modified single-benzene-ring copper-based MOFs (metal organic frameworks), and the method comprises the following steps: dropwise adding a copper nitrate monohydrate solution into a diamino terephthalic acid solution, fully stirring to react, and centrifugally washing and drying the product to obtain the amino-modified single-benzene-ring copper-based MOFs. The amino-modified single-benzene-ring copper-based MOFs are used for electrocatalytic reduction of carbon dioxide. The prepared amino-modified single-benzene-ring copper-based MOFs have unique morphology, active sites can be exposed on the inner surface and the outer surface, the accessibility of the active sites is improved, and meanwhile the reaction mass transfer capacity is enhanced.

The invention provides an acid-resistant COFs material capable of rapidly and efficiently adsorbing thorium ions and a preparation method thereof, the COFs material is prepared by reacting an aldehyde monomer trialdehyde phloroglucinol and an amine monomer, and the amine monomer is 2, 5-diamino terephthalic acid or 4, 4 '-diamino-[1, 1'-biphenyl]-3, 3 '-dicarboxylic acid. The functionalized COFs material prepared by regulating and controlling the grafted carboxyl has excellent thorium ion adsorption performance, has high adsorption capacity under the condition of strong acid (pH = 1-3), reaches the maximum adsorption capacity of 696 mg / g within 10 hours under the conditions that the initial concentration C0 is 400 ppm and the pH = 3, reaches the maximum adsorption capacity of 225 mg / g within 10 hours under the conditions that the initial concentration C0 is 400 ppm and the pH = 1, and has excellent thorium ion adsorption performance. And meanwhile, the catalyst has high stability in a strong acid environment and shows excellent regeneration cycle performance.

The invention provides a modified MOF synergistic resin-based composite material as well as a preparation method and application thereof, and belongs to the technical field of pollutant treatment. The method for preparing the resin-based composite material comprises the following steps: S1, mixing an MOF raw material, a modifier, resin and a solvent, and stirring to obtain a mixture; s2, performing solvothermal reaction on the mixture obtained in the step S1 to obtain a modified MOF synergistic resin-based composite material; wherein in the step S1, the MOF raw material is composed of ZrCl4 and 2-aminoterephthalic acid, and the modifier is carboxylic acid containing a sulfur element; in the step S2, the temperature of the solvothermal reaction is 100-150 DEG C. The resin-based composite material synthesized by the method has higher copper ion and antimony ion adsorption capacity.

The invention discloses an IRMOF-1-NH2 / SBS composite modifier as well as a preparation method and application thereof, and belongs to the technical field of asphalt processing. The composite modifier is prepared from the following raw materials in percentage by mass: 28 percent to 35 percent of IRMOF-1-NH2, 53 percent to 61 percent of SBS (Styrene Butadiene Styrene), 0.2 percent to 0.4 percent of an accelerant and 10.6 percent to 14.6 percent of a compatilizer; the preparation method of the IRMOF-1-NH2 comprises the following steps: S1, adding soluble zinc salt and 2-aminoterephthalic acid into a solvent, carrying out ultrasonic treatment, reacting at 120-150 DEG C for 12-24 hours, and separating and washing to obtain a solid product; and S2, heating the solid product obtained in the step S1 at the temperature of 100-150 DEG C for 10-20 hours to obtain the IRMOF-1-NH2 crystal. The compound modifier disclosed by the invention can be used for efficiently storing aromatics, so that the effect of inhibiting the aromatics from being gelatinized is achieved, and the anti-aging performance of asphalt is remarkably improved.

The invention belongs to the technical field of chemical analysis and detection, and relates to a method for rapidly detecting sodium ions in cigarette paper by nano-enzyme laccase. According to the method, 2-aminoterephthalic acid, copper nitrate and cerous nitrate are taken as precursors, polyvinylpyrrolidone is taken as a stabilizer, and a solvothermal method is adopted to synthesize the copper-cerium-containing MOF-based nano-enzyme with laccase-like activity, namely Cu / Ce-BDC-NH2 nano-enzyme; cu / Ce-BDC-NH2 nano-enzyme oxidizes 2, 4-dichlorophenol and 4-aminoantipyrine to obtain a red product, the potassium pyroantimonate ligand is adsorbed on the surface of Cu / Ce-BDC-NH2 to inhibit catalytic action, so that laccase-like activity is reduced, Na < + > is introduced to react with potassium pyroantimonate to generate a stable complex, the activity of Cu / Ce-BDC-NH2 laccase is recovered, and the red color of a solution is deepened. The invention establishes a novel colorimetric rapid detection method for sodium ions.

The invention discloses UiO-66-NH2-F4 (at) ANF fiber aerogel and a preparation method and application thereof.The UiO-66-NH2-F4 (at) ANF fiber aerogel comprises an MOF precursor and an aramid nanofiber ANF, the MOF precursor comprises zircon salt, 2-aminoterephthalic acid H2BDC-NH2 and 2, 3, 5, 6-tetrafluoroterephthalic acid H2BDC-F4, and the aramid nanofiber ANF is prepared from an aramid nanofiber ANF, an aramid nanofiber ANF and a zirconium salt. The mass ratio of the zirconium salt to the H2BDC-NH2 to the H2BDC-F4 to the ANF is (0.8 to 1.2) to (1 to 1.5) to (1 to 1.5) to (0.8 to 1.2); the specific surface area of the UiO-66-NH2-F4-coated ANF fiber aerogel is 728.52 m < 2 > / g, the pore volume is 0.628 cm < 3 > / g, and the average pore size is 0.519 nm. The UiO-66-NH2-F4-coated ANF fiber aerogel has the advantages that a large amount of MOF can be uniformly loaded on the surface of the ANF fiber, the UiO-66-NH2-F4-coated ANF fiber aerogel has excellent compression resilience, a three-dimensional hierarchical pore structure and excellent wet stability, and the CO2 adsorption capacity can be effectively improved.

The invention provides an adsorbent, a preparation method thereof and application of the adsorbent to separation of ethylbenzene from C8 mixed aromatic hydrocarbon, and relates to the technical field of adsorbents. The method comprises the following steps: mixing a silicon source, an aluminum source and water to obtain a first mixed solution; 2-aminoterephthalic acid, titanium isopropylate, N, N-dimethylformamide and methyl alcohol are mixed, and a second mixed solution is obtained; mixing the first mixed solution, the second mixed solution and an alkali metal salt solution to obtain a third mixed solution; performing hydrothermal reaction on the third mixed solution, and roasting an obtained hydrothermal product to obtain the adsorbent. The prepared adsorbent has a molecular sieve / MOF composite structure, alkali metal ions are anchored through organic ligands, and the acting force is stronger, so that the selectivity of the alkali metal ions is enhanced, meanwhile, the molecular sieve and MOF structures provide rich pore structures, and the ethylbenzene adsorption capacity of the material is greatly improved. The adsorbent provided by the invention can realize efficient separation of ethylbenzene from C8 mixed aromatic hydrocarbons, and ethylbenzene selectivity and adsorption capacity are high.

The invention discloses a metal organic framework adsorption material and a preparation method and application thereof, and relates to the technical field of chemical adsorption material preparation, the metal organic framework adsorption material comprises the following raw materials: ZrCl4, 2-aminoterephthalic acid, imidazole, chloramine salt, plant essential oil, a pore-forming agent and the like. The invention also discloses a preparation method which comprises the following steps: dissolving ZrCl4, 2-aminoterephthalic acid and hydrochloric acid in N, N-dimethylformamide; the reaction liquid, dichloroalkane and xylene are mixed, and UIO66-Cl is obtained; the preparation method comprises the following steps: putting UIO66-Cl and aminoimidazole into xylene; reacting with glycidyl methacrylate; and sequentially adding the reaction product, plant essential oil, a pore-forming agent and the like into absolute ethyl alcohol, and reacting to obtain the metal organic framework adsorbing material. The adsorption material provided by the invention has selectivity on plant essential oil mainly containing alcohol and ketone chemical substances and is high in adsorption capacity.

The invention relates to the field of heavy metal ion recovery, and discloses an organic covalent material and a preparation method thereof, and a composite adsorption film and a preparation method and application thereof. The method comprises the following steps: in the presence of an organic solvent, mixing 2, 5-diamino terephthalic acid and a hydroxyl-containing benzene-1, 3, 5-tricarboxaldehyde derivative for reaction to obtain the organic covalent material. The organic covalent material provided by the invention is compounded with chitosan to prepare a composite adsorption film, and the composite adsorption film can be used for adsorbing heavy metal ions in a water body, is high in heavy metal ion adsorption capacity, can be recycled, and has a relatively great application prospect in the field of heavy metal ion recovery.

The invention relates to a preparation method of ordered mesoporous MOFs with a hollow structure and uranium extraction application of the ordered mesoporous MOFs, the molar ratio of terephthalic acid to aminoterephthalic acid is controlled at 92: 8 by accurately regulating and controlling the variety and content of organic ligands in a reaction system, and the uranium extraction application of the ordered mesoporous MOFs with the hollow structure can be realized while amino functionalization is realized. The ordered mesoporous MOFs with the hollow structure are rapidly synthesized in one step, and the method is simple and high in operability. Experiments prove that the ordered mesoporous MOFs with the hollow structure have excellent anti-interference capability, show high-selectivity adsorption on uranium, and provide a new idea and choice for extraction of uranium from seawater.

The invention relates to a preparation method of an MOF / MXene composite membrane and application of the MOF / MXene composite membrane in the field of antibiotic desalination separation membranes. The ZnBDC-NH2 MOF nanosheet is prepared by mixing 2-amino terephthalic acid and zinc acetate dihydrate, and the ZnBDC-NH2 MOF nanosheet is prepared by mixing 2-amino terephthalic acid and zinc acetate dihydrate. The preparation method comprises the following steps: mixing and dispersing MXene and the ZnBDC-NH2 MOF nanosheets, so as to prepare a colloidal suspension; and uniformly depositing the colloidal suspension on the surface of a substrate by adopting a vacuum-assisted self-assembly technology to form a uniform stacked structure. According to the ZnBDC-NH2 MOF nanosheet composite membrane with the MXene as the intercalation, nanosheets are arranged in order, and the ZnBDC-NH2 MOF nanosheet composite membrane has excellent mechanical strength and relatively high water flux, so that efficient and rapid separation of antibiotic molecules and salts is realized.

The present invention relates to a monovalent selective cation exchange membrane and a preparation method thereof, belonging to the technical field of cation exchange membranes. The specific steps are: weighing DA and ammonium persulfate and adding them to a buffer solution to obtain a PDA coating solution, pouring the PDA coating solution on the surface of a base membrane for soaking, depositing a PDA coating on the surface of the activated base membrane to obtain membrane I; dissolving zirconium tetrachloride and 2-aminoterephthalic acid in DMF, then solvent-thermally synthesizing an amino-functionalized MOF (UIO-66-NH2) under acidic conditions, weighing PEI and MOF (UIO-66-NH2) powders and adding them to a buffer solution, then pouring them on the surface of membrane I, depositing a PEI-MOF composite coating to obtain membrane II, and air-drying membrane II to obtain a monovalent selective cation exchange membrane. It can be seen that the present invention can prepare a low-cost, highly selective, and stable-performance monovalent selective cation exchange membrane by modifying the cation exchange membrane through a simple and easy-to-operate method.

Provided are a hierarchical porous defect UiO-66 material and a preparation method thereof. The method includes the following steps: mixing a zirconium ion source, a mixed ligand, an organic acid, an organic good solvent, and water to obtain a mixture; and subjecting the mixture to reaction while heating, washing, freeze-drying, and heat treatment in sequence to obtain the hierarchical porous defect UiO-66 material; where hierarchical pores of the hierarchical porous defect UiO-66 material comprise micropores and mesopores; the micropores each have a pore size of not greater than 2 nm; the mesopores each have a pore size of 2 nm to 4 nm; the mixed ligand includes terephthalic acid and a trisubstituted benzene series; and the trisubstituted benzene series is one or two selected from the group consisting of 2-aminoterephthalic acid and 2-aminoisophthalic acid.

The invention relates to the technical field of nanofiber porous membranes, in particular to an electrostatic spinning nanofiber porous membrane for protective clothing. The electrostatic spinning nanofiber porous membrane for the protective clothing is prepared from the following raw materials in parts by mass: 5 to 15 parts of polyvinylidene fluoride, 1 to 2 parts of zirconium chloride, 5 to 15 parts of titanium dioxide aerogel, 0.5 to 1.5 parts of 2-aminoterephthalic acid, 1 to 3 parts of glacial acetic acid, 1 to 5 parts of collagen and 1 to 2 parts of carbon nanotubes. The titanium dioxide aerogel is prepared by the following steps: adding butyl titanate and graphene oxide into ethanol, uniformly stirring, adjusting the pH value of the system to 3-4, stirring for 10-20 minutes, standing for 1-2 hours at 60-70 DEG C, filtering, washing, drying, crushing, mixing with carboxyl-terminated polyamidoamine, adding into water, carrying out ultrasonic treatment, freezing, carrying out vacuum drying, and crushing. The composite film is excellent in structural stability, good in barrier property, high in puncture-resistant strength and excellent in moisture penetrability.

The invention discloses a composite wave-absorbing material with an ultraviolet shielding function and a preparation method thereof.The preparation method of the composite material comprises the following steps that S1, a zinc source, a titanium source and urea react in water, and after the reaction, zinc-titanium bimetal hydroxide Zn / Ti-LDH is obtained through cooling, centrifuging, washing and drying; s2, the Zn / Ti-LDH in the S1 is dispersed in N, N-dimethylformamide, then a cerium source, an iron source and 2-aminoterephthalic acid are added, cooling, centrifuging, washing and drying are carried out after a reaction, and a bimetallic-organic framework compound Zn / Ti-LDH-Ce / Fe-MOF is obtained; and S3, dispersing the Zn / Ti-LDH (at) Ce / Fe-MOF and sodium dodecyl benzene sulfonate in water, and adding pyrrole and ammonium persulfate for reaction to prepare the composite wave-absorbing material with the ultraviolet shielding function. The composite material disclosed by the invention is good in dispersity in a high polymer material and stable in performance, and has ultraviolet shielding and wave absorbing properties.

The invention belongs to the technical field of lubricating oil manufacturing, and relates to composite lubricating oil used in an aluminum rolling process, which comprises the following components in parts by mass: 94-96 parts of base oil, 0.5-1.5 parts of an oiliness agent, 0.5-0.8 part of an extreme pressure anti-wear agent, 0.5-1.5 parts of a wear-resistant antioxidant, 0.5-2 parts of oleic acid diethanolamide and 0.5-1 part of an antirust agent. On the basis of the prior art, nano-sheet molybdenum disulfide is introduced and added into 2-aminoterephthalic acid and nickel nitrate to react to prepare a modified metal organic framework, then carnosic acid is grafted through an amide reaction to prepare the wear-resistant antioxidant, and a protective film can be formed on a friction interface through a sheet structure of molybdenum disulfide, so that the friction coefficient is reduced; the wear resistance is improved; a compact passive film is formed on the surface of aluminum metal through the synergistic effect of the extreme pressure anti-wear agent and the wear-resistant antioxidant, and the corrosion resistance and wear resistance of the composite lubricating oil used in aluminum plate rolling are improved.

The invention relates to a monovalent selective cation exchange membrane and a preparation method thereof, and belongs to the technical field of cation exchange membranes, and the specific steps are as follows: weighing DA and ammonium persulfate, adding into a buffer solution to obtain a PDA coating solution, pouring the PDA coating solution on the surface of a base membrane for soaking, and depositing a PDA coating on the surface of the activated base membrane to obtain a membrane I; the preparation method comprises the following steps: dissolving zirconium tetrachloride and 2-aminoterephthalic acid in DMF (Dimethyl Formamide), performing solvothermal synthesis on amino-functionalized MOF (UIO-66-NH2) under an acidic condition, weighing PEI and MOF (UIO-66-NH2) powder, adding into a buffer solution, pouring on the surface of a membrane I, depositing a PEI-MOF composite coating to obtain a membrane II, and air-drying the membrane II to obtain the monovalent selective cation exchange membrane. Therefore, the monovalent selective cation exchange membrane which is low in cost, high in selectivity and stable in performance can be prepared by modifying the cation exchange membrane through a simple and easy-to-operate method.

The invention relates to the technical field of gas separation membrane materials, in particular to a preparation method of a PIL-MOF composite membrane and application of the PIL-MOF composite membrane in CO2 / N2 separation.The preparation method comprises the steps that S1, a PET base membrane is pretreated, specifically, the PET membrane is soaked in a 3M HNO3 solution for 8-12 hours, washed with deionized water to be neutral and then dried; s2, in-situ growth of UiO-66-NH2: dissolving zirconium tetrachloride in acetic acid, preserving heat at 80 DEG C for 0.5-1.5 hours, cooling, adding DMF and 2-aminoterephthalic acid to form a precursor solution, dipping the pretreated PET film for 1-3 hours, and performing solvothermal reaction at 110-130 DEG C for 18-24 hours to obtain a PET / UiO-66-NH2 film; and S3, photo-initiation polymerization: coating the surface of the PET / UiO-66-NH2 film with a solution containing [VBIM] [BF4], a cross-linking agent and a photoinitiator, carrying out 365 nm ultraviolet light curing for 0.5-2 h, and drying to obtain the PIL-MOF composite film. The composite membrane combines the porous characteristic of the metal organic framework and the functional characteristic of the ionic liquid, and has application value in the fields of gas separation, catalysis and the like; the preparation process is simple, the interface bonding strength is high, and the product performance is stable.

The invention discloses an antibacterial antifouling agent as well as a preparation method and application thereof. The preparation method comprises the following steps: carrying out chemical grafting on an amino terephthalic acid compound by adopting benzisothiazolinone to prepare a functional ligand; and carrying out a reaction on a metal salt and the functional ligand to prepare the antibacterial antifouling agent. The antibacterial antifouling agent disclosed by the invention shows broad-spectrum antibacterial activity on gram-negative bacteria and gram-positive bacteria, and has anti-algae performance and good biocompatibility; meanwhile, the antibacterial and antifouling agent is compounded into water-based acrylic resin, the obtained coating still has excellent antibacterial and anti-algae performance, the ligand engineering strategy effectively breaks through the bottleneck that traditional MOFs ligands are insufficient in antibacterial activity, and an innovative path is provided for developing long-acting, synergistic and practical MOF-based antibacterial and antifouling materials.

The invention belongs to the technical field of catalytic synthesis, and particularly relates to a method for catalyzing a Suzuki reaction based on a Pd / UiO-66-NH2 (at) RGO composite material. According to the technical scheme, ZrCl4, 2-aminoterephthalic acid, graphene oxide, DMF and glacial acetic acid are sequentially added into a reaction kettle, stirred for 0.5 h and placed in a 473 K drying oven to react for 12 h, the mixture is cooled to the room temperature and then centrifuged, washed and dried in vacuum, Pd is loaded through an equivalent impregnation method, and the catalyst is obtained. Catalyzing Suzuki reaction of the obtained composite material Pd / UiO-66-NH2 (at) RGO, iodobenzene, phenylboronic acid and potassium carbonate in a reaction container, and reacting for 1 hour under the condition of 353 K; the preparation method of the Pd / UiO-66-NH2 (at) RGO provided by the invention is simple, and the Pd / UiO-66-NH2 (at) RGO shows ultrahigh catalytic ability in a Suzuki reaction.

The invention relates to the technical field of nano-enzymes, and discloses a copper-based nano-enzyme with laccase and peroxidase double-enzyme activity and preparation and application thereof, and the copper-based nano-enzyme is a nano-material prepared by forming MOF through solvothermal reaction of copper ions and diamino terephthalic acid and then performing electrostatic adsorption on the MOF and polyoxometallate. The copper-based nano enzyme has high-efficiency laccase-like activity and peroxidase-like activity at the same time through the combination and synthesis process of the copper ion cluster and the organic ligand. The invention further discloses a preparation method of the copper-based nano-enzyme, peroxidase activity detection and application of the copper-based nano-enzyme to degradation and determination of dichlorophenol. The copper-based nano-enzyme provided by the invention has high catalytic activity and stability, is low in cost and easy to prepare, and can be applied to biosensing detection of hydrogen peroxide and environmental remediation degradation of organic pollutants such as phenols and dyes.

The invention discloses a mixed matrix membrane based on defect MOF and a preparation method and application thereof, and the method comprises the following steps: (1) dissolving a hydroxyl-containing monodentate carboxyl organic ligand and 2-aminoterephthalic acid in a solvent A, stirring at room temperature, and carrying out ultrasonic treatment to obtain a mixed solution; then dropwise adding tetraisopropyl titanate into the mixed solution, and carrying out heating reaction in a reaction kettle; after the reaction is finished and cooling is carried out, a solid product is collected through centrifugation, washed and dried, and DN-MIL-125 is obtained; (2) dispersing DN-MIL-125 in a solvent B to obtain a DN-MIL-125 suspension, dissolving an intrinsic microporous polymer cPIM-1 in a solvent C to obtain a cPIM-1 solution, and then uniformly mixing the cPIM-1 solution with the DN-MIL-125 suspension to obtain a membrane casting solution; and carrying out defoaming treatment on the membrane casting solution, and forming a membrane by adopting a solution casting method to obtain the mixed matrix membrane DN-MIL-125 / cPIM-1. According to the method, the defective metal organic framework material DN-MIL-125 is added into the cPIM-1 intrinsic microporous polymer to prepare the mixed matrix membrane, and the separation performance of CO2 / N2 gas can be remarkably improved.

The invention particularly relates to a phosphotungstic acid / amino-functionalized UiO-66 bifunctional catalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: dissolving zircon salt, terephthalic acid and 2-aminoterephthalic acid in an organic solvent; adding a regulator acetic acid, and activating to prepare amino-functionalized UiO-66; and slowly dropwise adding a phosphotungstic acid acetonitrile solution into the amino-functionalized UiO-66 acetonitrile dispersion liquid, stirring and reacting at room temperature, and separating and drying to obtain the catalyst HPW at amino-functionalized UiO-66. The bifunctional catalyst (phosphotungstic acid / amino-functionalized UiO-66) is coordinated through an acid-base site at a lower temperature (170 DEG C vsgt; according to the present invention, the reaction is performed at the temperature of 200 DEG C, the formation of carbon deposition can be substantially inhibited at the low temperature, and the catalyst has characteristics of high catalytic activity after five cycles, extraordinary hydrothermal stability and chemical stability, can maintain the stability of the catalyst in the reaction environment with the existence of a small amount of water, and has good and broad application prospects.

The invention discloses a method for preparing a fertilizer based on ultrafiltration pretreatment of glutamic acid fermentation liquor, and relates to the technical field of fertilizer preparation, and the method has the advantages that by preparing a composite adsorption material G of which the core is nano silicon dioxide particles, firstly, the nano silicon dioxide particles are pretreated, so that the surfaces of the nano silicon dioxide particles are connected with amino functional groups; the preparation method comprises the following steps: preparing a nano silicon dioxide MOF composite material, synthesizing the nano silicon dioxide MOF composite material with a nitrogen-containing organic ligand (2-aminoterephthalic acid) and a metal ion source (zinc ion salt) through a solvothermal method, and finally, carrying out surface modification by using an aldehyde group functionalized silane coupling agent, so that the surface of the material has aldehyde groups, and the composite adsorption material G can adsorb glutamic acid. The method has the advantages that the method is simple to operate, interference of other impurities in fermentation liquor on glutamic acid is eliminated, the extraction purity of glutamic acid is remarkably improved, the effective content of glutamic acid in the fertilizer is higher in the fertilizer preparation process, higher-quality and more accurate nutrients can be provided for crops, and growth and development of the crops are better promoted.

The invention belongs to the technical field of synthesis of ester compounds, and particularly relates to a preparation method of 2, 6-dichloro-4-cyanobenzoic acid methyl ester, which comprises the following steps: by taking dimethyl 2-aminoterephthalate as a raw material, sequentially carrying out substitution reaction, deamination reaction, hydrolysis reaction, amidation reaction and dehydration reaction to obtain the 2, 6-dichloro-4-cyanobenzoic acid methyl ester. The 2, 6-dichloro-4-cyanobenzoic acid methyl ester is prepared by the method, and the yield reaches 59.28%. The N-chlorosuccinimide is used as a chlorine source to carry out substitution reaction on the 2-amino dimethyl terephthalate, so that the potential safety hazard caused by the traditional chlorination reagent is avoided, and the tert-butyl nitrite used in the deamination reaction avoids the potential safety hazard caused by the use of strong corrosive sulfuric acid; the amidation reaction is completed in one step by adopting a condensing agent, so that the complicated operation caused by firstly preparing acyl chloride and then carrying out condensation reaction is avoided, and therefore, the preparation method has the characteristics of safe preparation process, environment friendliness, simplicity in operation and the like under the condition of ensuring the product yield and purity.

The invention discloses a fiber membrane prepared based on in-situ growth and its application in adsorbing toluene, and belongs to the technical field of functional textiles. The method for preparing fiber membrane based on in-situ growth in the present invention comprises the following steps: (1) adding 2-aminoterephthalic acid and polyacrylonitrile in a solvent, mixing uniformly, and obtaining a spinning solution; (2) subjecting the spinning solution to electrostatic spinning, drying, and obtaining a fiber membrane; (3) placing the fiber membrane in an ethylene glycol solution, adding ethylenediamine, and performing thermal crosslinking; after thermal crosslinking is completed, washing, drying, and obtaining a fiber membrane after crosslinking; (4) placing the fiber membrane after crosslinking in a solvent, adding zirconium oxychloride, 2-aminoterephthalic acid, and benzoic acid, performing in-situ growth, and obtaining a fiber membrane prepared based on in-situ growth. The fiber membrane prepared based on in-situ growth of the present invention has a high adsorption capacity for toluene, is recyclable, and can be recycled.

The invention relates to the technical field of energy conversion materials, and discloses a metal organic framework nano material with adjustable photo-thermal performance and a preparation method of the metal organic framework nano material. According to the method, two ligands with different functional groups, namely 2-aminoterephthalic acid and 2-fluoroterephthalic acid, are used for regulating and controlling the near-infrared light absorption capacity of the metal organic framework, so that the photothermal conversion temperature is accurately controlled by changing the proportion of the ligands. Compared with the traditional mode of improving the photo-thermal performance by depending on changing the optical power density, the metal organic framework nano material provided by the invention has remarkable advantages in the aspects of preparation process, structure controllability and photo-thermal conversion performance regulation and control.

The invention discloses a preparation method and application of a bimetallic nano-enzyme induced MOFs (at) CDs material, and the preparation method at least comprises the following steps: I, dissolving FeCl3, CoCl2 and 2-aminoterephthalic acid in N, N '-dimethylformamide to form a mixed solution I, and carrying out a reaction I to obtain a bimetallic MOFs material; step II, mixing tricarballylic acid and m-phenylenediamine, and carrying out a reaction II to obtain carbon dot powder; step III, dissolving the carbon dot powder obtained in the step II in methanol, and adding rhodamine B dye to obtain a CDs material; and IV, dissolving the bimetallic MOFs material obtained in the step I and the CDs material obtained in the step III in water, stirring, and drying to obtain the MOFs (at) CDs material. The synthesized nano-enzyme is simple to prepare and high in catalytic activity, the carbon dot material is encapsulated into the MOFs material, the fluorescence characteristic of the MOFs material is enhanced, and the carbon dot material is combined with o-phenylenediamine to be used for detecting H2O2.

The invention relates to the field of catalysts and environmental pollution treatment, in particular to an NH2-MIL-101 (Fe, Mn) piezoelectric catalyst, a preparation method and application thereof and a method for removing basic groups, antibiotics and antibiotic resistance genes in water. The preparation method comprises the following steps: mixing ferric salt, manganese salt and 2-aminoterephthalic acid, and reacting to obtain the NH2-MIL-101 (Fe, Mn) piezoelectric catalyst. The NH2-MIL-101 (Fe, Mn) piezoelectric catalyst provided by the invention has excellent piezoelectric catalysis performance and good stability, and can obviously improve the reaction efficiency of piezoelectric catalysis PDS with electrons and holes, thereby improving the removal efficiency of basic groups, antibiotics and antibiotic resistance genes in water.

This invention belongs to the field of analytical detection technology and relates to a method for detecting estradiol using a combination of organometallic framework enrichment and enzyme-linked immunosorbent assay (ELISA). A magnetic organometallic framework solid-phase extractant is used to enrich estradiol in the sample, followed by detection of the enriched estradiol using ELISA. The magnetic organometallic framework solid-phase extractant is prepared by subjecting mercaptoacetic acid-modified Fe3O4 particles, zirconium salt, and 2-amino-terephthalic acid to a solvothermal reaction at 110–130°C for 22–26 hours. The detection method provided by this invention has advantages such as short detection time, high sensitivity, good specificity, and high accuracy, thereby enabling the detection of trace amounts of estradiol in environmental water samples.