331 results about "Pyrene" patented technology

The invention belongs to the technical field of novel fluorescent materials, and particularly discloses application of a mechanical color change pyrenyl derivative in latent fingerprint fluorescence imaging and extraction. The mechanical color-changing pyrenyl derivative can be selectively combined with fingerprint residual substances under the excitation of ultraviolet light through the unique fluorescence response characteristic, so that potential fingerprints form high-contrast fluorescence imaging on smooth or rough surfaces (such as glass, metal, plastic and the like), and the mechanical color-changing pyrenyl derivative is compatible with conventional camera equipment to realize rapid acquisition. The compound design is based on a modular synthesis route, and has the advantages of simple and convenient synthesis process, controllable raw material cost, high reaction yield and the like. The product has excellent thermal stability and chemical stability, can be stored at normal temperature and does not need special treatment, and the practical application threshold is greatly reduced. Compared with a traditional fingerprint developing technology, the method has remarkable breakthroughs in the aspects of sensitivity, substrate adaptability and operation convenience, and an efficient, economical and environment-friendly novel solution is provided for the fields of criminal investigation, forensic identification and the like.

The invention provides an imine covalent organic polymer and a preparation method thereof, a negative electrode material and a potassium ion battery. The preparation method comprises the following steps: carrying out first mixing on raw materials including a carbonyl-containing first organic compound, an amino-containing second organic compound and a dispersion liquid to obtain a mixed liquid; carrying out in-situ polymerization reaction on the mixed solution to obtain an imine covalent organic polymer; wherein the first organic compound is nitro-substituted or non-substituted pyrene-4, 5, 9, 10-tetraketone; the second organic compound is selected from any one or more of C6-C12 aromatic amine compounds, C6-C12 heteroaromatic amine compounds and amino-substituted C4-C6 cyclic compounds, and the number of amino groups in each molecule of the second organic compound is greater than or equal to 2. The covalent organic polymer obtained by the preparation method can solve the problem that the structure is easily stacked and is easily dissolved in electrolyte to be damaged when the covalent organic polymer is used as a negative electrode material.

The invention relates to the technical field of materials and advanced oxidation, and discloses a covalent organic framework catalyst with a benzothiadiazole structure, a preparation method of the covalent organic framework catalyst and application of the covalent organic framework catalyst in peroxymonosulfate (PMS) activation and organic pollutant degradation. The preparation method of the covalent organic framework catalyst comprises the following steps: adding precursors 1, 3, 6, 8-tetra-(p-aminophenyl)-pyrene and 2, 7-dibenzaldehyde-benzothiadiazole into a mixed solvent composed of o-dichlorobenzene and n-butyl alcohol, carrying out a reaction by using acetic acid as a catalyst through a solvothermal method, and after the reaction, carrying out multiple times of centrifugal washing and drying to obtain the covalent organic framework catalyst. The catalyst shows excellent performance in the aspect of activating PMS to degrade organic pollutants, the degradation rate constant of bisphenol A reaches 1.68 min <-1 >, and 100% removal can be achieved within 5 minutes. Meanwhile, the catalyst has the advantages of no secondary pollution, strong anti-interference performance, reusability and the like. Compared with a traditional method, the catalyst has high PMS activation efficiency, the catalysis process is energy-saving and environment-friendly, the operation is simple and convenient, the preparation process is simple and feasible, and a new solution is provided for efficient degradation of organic pollutants in water.

The invention discloses a perovskite precursor solution containing substituted aromatic ring group sulfonic acid, which comprises a perovskite material, an additive and an organic solvent, the additive is aromatic ring group sulfonic acid with a substituent group or a salt thereof, the aromatic ring is a benzene ring, a naphthalene ring or a pyrene ring, and the substituent group is one or more of H, halogen, C1-C4 alkenyl and C1-C4 alkyl. Polycyclic aromatic hydrocarbon (such as benzene, naphthalene and pyrene) is used as a framework, one sulfonic acid group instead of a sulfonyl group is introduced, and uncoordinated type defect passivation is realized through bonding with Pb < 2 + >; meanwhile, the electron push-pull characteristic of the substituent group is utilized, the Lewis acid-base amphoteric property is exerted, passivation of various types of defects is achieved, anchoring and passivation of multiple sites are achieved, the defects of the perovskite active layer can be remarkably reduced, non-radiative recombination can be reduced, and the performance and stability of the prepared perovskite solar cell in the large-scale preparation process are further improved.

The invention provides a biosensing probe based on a pyrene-doped metal organic framework composite material, and a preparation method and a reagent thereof. The pyrene-doped metal organic framework composite material PCA-UiO-66 is prepared by adopting a one-pot method, the target product can be prepared by directly introducing 1-pyrenecarboxylic acid in the synthesis process of the UiO-66, PCA in the prepared PCA-UiO-66 composite material has stability and flexibility in MOF, the PCA-UiO-66 composite material is suitable for application in the aspect of biosensing, and the application range is wide. The biosensing probe Apt (at) PCA-UiO-66 prepared on the basis has good flexibility, excellent selectivity and anti-interference capability, excellent reproducibility and stability, wide detection range and extremely low detection limit.

The invention provides a covalent organic framework material as well as a preparation method and application thereof, 1, 3, 6, 8-tetra (4-aminophenyl) pyrene is selected as a central construction unit, and a trap state is realized in a covalent organic framework (COFs) by regulating and controlling the symmetry of active sites (benzothiadiazole, BT). Compared with a centrosymmetric counterpart in the COFs, by breaking the symmetry of the center BT core, the trap state density in the COFs can be remarkably reduced, and the service life of the shallow trap state can be prolonged to 1160.02 picoseconds. Therefore, more photo-induced electrons can participate in the photocatalytic reaction, and the remarkable performance (greater than 99%) of photocatalytic reduction of uranium (VI) is finally realized. According to the invention, the key effect of symmetric breaking in inhibition of excited state decay of COFs is clarified for the first time, and a profound solution is provided for understanding how to improve the photocatalytic performance of COFs in environmental restoration.

The invention relates to the field of ultraviolet light absorbers, and discloses a research and development method of an ultraviolet light absorber with a novel structure. Comprising the following raw materials in parts by weight: 25 to 30 parts of pyrene-triazine hybrid, 10 to 20 parts of MOF loaded benzotriazole, 15 to 20 parts of silicon dioxide coated nano zinc oxide, 10 to 15 parts of carbon quantum dot modified titanium dioxide, 8 to 12 parts of PLGA microcapsules, 7 to 13 parts of chitosan-hyaluronic acid composite film, 12 to 18 parts of Eu < 3 + > coated MOF fluorescent material, 8 to 12 parts of gibberellin-nano selenium compound and 5 to 8 parts of ionic liquid PF6. The absorption wavelength range is widened by virtue of a unique structure of a pyrene-triazine hybrid, the stability and dispersity are improved by MOF-loaded benzotriazole through MOF pore channels, the conditions of agglomeration and poor stability of nano-zinc oxide are improved by coating nano-zinc oxide with silicon dioxide, and the photoresponse range of titanium dioxide is expanded by modifying titanium dioxide with carbon quantum dots.

The invention discloses a covalent organic framework material based on a boric acid structure, a preparation method of the covalent organic framework material and application of the covalent organic framework material in dopamine detection, and relates to a covalent organic framework material and a preparation method and application of the covalent organic framework material. The technical problems that an existing dopamine recognition method is high in detection limit and harsh in recognition environment are solved. The periodic structure fragment of the covalent organic framework material based on the boric acid structure is shown in the specification. The 2-(4-boric acid phenyl)-5, 10-dinitro-1H-phenanthro [9, 10-d] imidazole diamine and 4, 4 ', 4', 4 ''-(pyrene-1, 3, 6, 8-tetrayl) tetrabenzaldehyde are subjected to a reaction to obtain the 2-(4-boric acid phenyl)-5, 10-dinitro-1H-phenanthro [9, 10-d] imidazole diamine derivative. The covalent organic framework material based on the boric acid structure is used for detecting dopamine, has relatively high selectivity and anti-interference capability, and is not interfered by amino acid in the environment. And the covalent organic framework material based on the boric acid structure can be embedded in the hydrogel, so that the hydrogel is convenient to carry. The method can be applied to detection of dopamine in environment and biological systems.

The invention belongs to the technical field of chromatographic separation materials, and discloses a preparation method and application of a GM-8 nanosheet material. The preparation method of the material comprises the following steps: respectively dissolving Cu (NO3) 2.3 H2O and 1, 3, 6, 8-tetra (4-carboxybenzene) pyrene in an organic solvent, mixing, transferring into a reaction bottle, adding trifluoroacetic acid and pyridine, and uniformly mixing and stirring to obtain a reaction mixture; and heating the reaction mixture to react for 7-9 hours to obtain a blue precipitate, cooling the blue precipitate to room temperature, and washing and drying the blue precipitate to obtain the ultra-stable microporous GM-8 nanosheet material. The nanosheet GM-8 is used as a gas chromatography stationary phase, high-efficiency separation and trace detection of xylene isomers can be realized, and the chromatographic column still keeps excellent separation capacity after being stored in an environment with air humidity of 65-90% for 31 months. The capillary gas chromatographic column can realize high-efficiency separation of disubstituted benzene isomers such as xylene, the separation degree of m-xylene / p-xylene is up to 18.2, and a new solution is provided for high-efficiency separation of isomers with similar properties.

The invention belongs to the technical field of material chemistry, and provides a light response type oxidase-like simulant with a donor-receptor structure as well as a preparation method and application of the light response type oxidase-like simulant. The oxidase-like simulant is obtained through an ammonia-aldehyde condensation reaction of 1, 3, 6, 8-tetra (4-aminophenyl) pyrene or 2, 4, 6-tri (4-aminophenyl)-1, 3, 5-triazine and BDP (1, 3, 6, 8-tetra (4-aminophenyl) pyrene. The oxidase-like enzyme can form a sensor or a kit for detecting organophosphorus pesticides together with TMB, AChE and AChE substrates; qualitative determination can be realized through visual inspection of color change, and quantitative determination can also be realized through assistance of a colorimetric instrument. The light response type nano enzyme and AChE cascade reaction can realize visual rapid detection of various organophosphorus pesticides in traditional Chinese medicinal materials such as astragalus membranaceus and angelica sinensis, and has the advantages of being simple, rapid, high in sensitivity, good in practicability and the like.

This disclosure refers to a method for the synthesis of polymers with weight average molecular weights greater than 50,000 g / mol, chemically inert, with a minimum decomposition temperature of 425° C., and a main chain composed only of carbon-carbon bonds, which contain structures of the type of naphthalene, phenanthrene, anthracene, pyrene, carbazole or any other where two or more aromatic rings of six carbon atoms of the benzene-type are fused, which may or may not contain aromatic heterocycles. In addition, the polymers obtained from the present disclosure may or may not contain fluorine atoms in their structure. The synthesis described here is carried out by means of polycondensation between a polycyclic aromatic compound and a compound with a carbonyl group in its structure in a strong acid medium.

The invention discloses a tetrapyridine pyrene-based metal organic cage as well as a preparation method and application thereof, and belongs to the technical field of supramolecular chemistry. The metal organic cage is prepared from a tetrapyridine pyrene ligand, a tetradentate sodium carboxylate ligand and a cis-platinum metal ligand, and the metal organic cage is endowed with photocatalytic performance by introducing a photosensitive group into the ligands, so that the metal organic cage can effectively degrade perfluorooctanoic acid through a photo-induced electron transfer mechanism, thereby realizing an adsorption-degradation integrated function. The metal organic cages can release effective reactive oxygen species under the irradiation of a 365 nm ultraviolet lamp and can degrade the perfluorooctanoic acid, the defluorination rate can reach 80%, the perfluorooctanoic acid is degraded into a short-chain compound, and a photodegradation system is artificially prepared.

The invention belongs to the technical field of photocatalysts, provides a structure, a preparation method and application of four novel organic polymer materials, and particularly relates to a preparation method and application of a perylene covalent triazine framework material. The preparation method mainly comprises the following steps: firstly, mixing monomers containing different functional groups and structures in different solvents, and synthesizing a polymer material through simple Sonogashira coupling reaction and Suzuki coupling reaction; secondly, performing Soxhlet extraction and purification on the four materials in a Soxhlet extractor to wash off impurities and unreacted monomers; according to the novel organic polymer material, triazine rings are introduced and form a more stable and prolonged D-A structure with pyrene and perylene functional group parts, intramolecular electron transfer of photon-generated carriers is promoted, compounding of the photon-generated carriers can be inhibited, and then the performance of the obtained material for photocatalytic water production of hydrogen peroxide is improved; meanwhile, the influence of introduction of different units on the performance of photocatalytic water production of hydrogen peroxide is compared.

The invention relates to a stimulus-response lasting phosphorescent material based on carboxymethyl chitosan and a preparation method and application thereof, the preparation method comprises the following steps: preparing a mixed solution: mixing purified carboxymethyl chitosan with pyrene-2, 7-dicarboxylic acid mother liquor dissolved by sodium hydroxide, and introducing acid to adjust the pH value to obtain the mixed solution; and preparing an afterglow film material: pouring the obtained mixed solution into a mold, and drying to obtain the stimulus-response-lasting phosphorescent material based on carboxymethyl chitosan. Compared with the prior art, the material disclosed by the invention is diversified in response dimension, wide in color change range, stable in luminescent property at normal temperature, free of inert gas or vacuum protection in a use process, good in actual operability and reusability, and suitable for customized development of personalized anti-counterfeiting ink; the material can also be used as a functional additive to be doped in hydrophilic macromolecules, and is used for intelligent information labels, wearable display fabrics, noctilucent art materials, flexible encryption coatings and other emerging application scenes.

The invention discloses a covalent organic framework material, a preparation method thereof and application of the covalent organic framework material in degrading new pollutants in a water body by activating PMS, the covalent organic framework material contains a pyrene group and a bipyridine linking group, has a flat molecular structure and a laminated nanosheet morphology, and has a regular pore structure; the catalyst has a good crystal structure, reliable mechanical strength and excellent thermal chemical stability and catalytic activity, and is an excellent catalyst; and the subsequent modification and metal atom loading sites exist, so that the possibility is provided for further improving the catalytic activity. The bottleneck problems of low crystallinity and poor stability in the traditional preparation process are solved through solvothermal reaction preparation, use of a mixed solvent system and introduction of a weakly acidic solvent, the preparation method is simple, and large-scale production can be realized. The activated PMS degrades new pollutants in the water body; under the condition that the reaction time is 45 minutes, the degradation rate of the BPA can reach 100%.

The invention discloses a preparation method of a pyrenyl covalent organic framework material and application of the pyrenyl covalent organic framework material in photocatalytic hydrogen production reaction, and belongs to the field of heterogeneous catalysis. The novel pyrenyl COFs photocatalyst is synthesized by regulating and controlling the quantity of triphenylamine and integrating triphenylamine monomers with different contents into a pyrenyl covalent organic framework (COF) skeleton. The preparation method is simple to operate, mild in reaction condition, short in reaction time and high in repeatability, the obtained pyrenyl COFs have good light capture capacity and photon-generated carrier separation characteristic, electron-hole recombination can be effectively reduced, the excited state service life is prolonged, the reaction efficiency of photocatalytic hydrogen production is improved, and potential application prospects are achieved.

The invention provides a solid additive and a preparation method thereof, positive electrode slurry, a positive plate and a lithium ion battery. The preparation method of the solid additive comprises the following steps: carrying out polymerization reaction on raw materials comprising an organic compound and a functional compound to obtain the solid additive, wherein the organic compound is a pyrene compound and / or an organic framework compound; the pyrene compound is a 1, 3, 6, 8-tetra (4 '-formylbenzene) pyrene ligand and / or 4, 4', 4 '', 4 ''-(pyrene-1, 3, 6, 8-tetrayl) tetraphenylamine; the organic framework compound is a covalent organic framework material COFs and / or a metal organic framework material MOFs; the functional compound is a crown ether compound and / or a Bispidine compound. The solid additive obtained by the preparation method can selectively capture manganese ions, so that the manganese ions are prevented from being dissolved out from a positive electrode, and the cycle stability and the cycle life of the positive electrode are improved.

The present disclosure relates to an OLED that includes a first electrode; a second electrode facing the first electrode; a first emitting material layer including a first host being an anthracene derivative and a first dopant being a pyrene derivative and positioned between the first and second electrodes; and a first electron blocking layer including an electron blocking material of a heteroaryl-substituted amine derivative and positioned between the first electrode and the first emitting material layer, wherein at least one of hydrogen atoms in the anthracene derivative and the pyrene derivative is deuterated.

The invention relates to the technical field of environmental remediation microorganisms, and discloses acinetobacter B2-4, a culture method thereof and application of the acinetobacter B2-4 in degradation of polycyclic aromatic hydrocarbon. The Acinetobacter sp. B2-4 is preserved in the China General Microbiological Culture Collection Center on March 3, 2025, the preservation address is No.3, Yard 1, Beichen West Road, Chaoyang District, Beijing, and the preservation number is CGMCC No.33689. The Acinetobacter sp. B2-4 has the advantages that the Acinetobacter sp. The Acinetobacter sp. B2-4 disclosed by the invention is an anaerobic bacterium, and can utilize nitrate, iron, sulfate and the like to replace an electron acceptor in an anoxic environment to continuously degrade polycyclic aromatic hydrocarbon. After the strain is cultured for 45 days, the degradation rate of phenanthrene reaches 74.9%, and the degradation rate of pyrene reaches 56.2%.

The invention relates to a diyne functionalized covalent organic framework material as well as a preparation method and application thereof, and the diyne functionalized covalent organic framework material is synthesized by taking 4, 4 ', 4', 4 ''-(pyrene-1, 3, 6, 8-tetrayl) tetraphenylamine and 5, 5 '-(butyl-1, 3-diyne-1, 4-diyl) diisophthalaldehyde as construction units and adopting a Schiff base reaction. The dialkynyl functionalized covalent organic framework material disclosed by the invention has good chemical stability and can be used as a carrier to controllably grow silver nanoparticles through metal coordination to obtain a composite material, and the composite material shows excellent catalytic activity and cycling stability in a 4-nitrophenol reduction reaction catalyzed by sodium borohydride; therefore, the method has important application potential in the fields of environmental restoration, green chemistry and the like.

This invention relates to a trifluoromethyl-substituted pyrene-phenylacetonitrile derivative, its preparation method, and its application. A trifluoromethyl-substituted pyrene-phenylacetonitrile derivative has the structural formula: [formula omitted]. The preparation method involves dissolving 1-pyrene formaldehyde, the corresponding trifluoromethylphenylacetonitrile, and an alkaline catalyst in an organic solvent, and carrying out a Knoevenagel condensation reaction under heating conditions. The reaction product is then post-treated to obtain the pyrene-phenylacetonitrile derivative. The application of a trifluoromethyl-substituted pyrene-phenylacetonitrile derivative in electrical storage devices is also discussed. This invention achieves precise control of storage performance by introducing trifluoromethyl groups at different positions on the benzene ring of the pyrene-phenylacetonitrile backbone, providing a novel design approach for developing new multi-level electrical storage materials. The synthesis route is concise and has broad application prospects in the field of high-density non-volatile memory.

The invention relates to a method for reducing harmful components in cigarette smoke by using food-grade cyclodextrin metal organic framework materials, which is characterized in that two food-grade cyclodextrin metal organic framework materials CD-MOFs are added into cigarette filters for reducing the harmful components in the cigarette smoke. The unique pore structure and rich hydroxyl functional sites of the gamma-cyclodextrin-KOH and the beta-cyclodextrin-KOH are utilized to efficiently adsorb various harmful components in the mainstream smoke of the cigarette. Compared with a control group without any adsorbent and a control group with only activated carbon as the adsorbent, the CD-MOFs has efficient capturing capability on harmful gases such as carbon monoxide, nitrosonicotine, ammonia gas, benzo [a] pyrene and phenol in the cigarette smoke, and can obviously reduce the cigarette hazard index. The two materials are simple in preparation process, high in cost benefit and good in chemical stability, are food-grade porous materials and have incomparable practical application potential compared with traditional non-food-grade porous materials, and an effective solution is provided for developing novel low-harm cigarette products.

The invention discloses a high-stability pyrene tetraketone quinone polymer negative electrode material as well as a preparation method and application thereof. The negative electrode material is prepared by taking pyrene-4, 5, 9, 10-tetraone and an aminoquinone compound as reaction monomers through condensation reaction in a solvent medium, and a stable polymer structure with an expanded pi conjugated skeleton and rich proton storage active sites can be formed; the material effectively improves proton storage capacity, charge transfer dynamic performance and structural stability in a long-term cycle process, shows outstanding electrochemical performance after being assembled into an organic water-based proton battery, effectively solves the defects that a traditional organic electrode material is easy to dissolve in a water-based system, limited in specific capacity and short in cycle life, and has a wide application prospect. The method has a good application prospect in the field of energy conversion such as large-scale electrochemical energy storage.

The application discloses a graphene quantum dot / indium sulfide electromagnetic wave absorbing material and a preparation method thereof, and comprises the following steps: carrying out a hydrothermal reduction reaction on trinitro-pyrene and an alkaline solution to obtain graphene quantum dot powder rich in hydroxyl functional groups on the surface; and carrying out a hydrothermal reaction on a mixture of indium chloride tetrahydrate and thioacetamide and the graphene quantum dot powder to obtain a graphene quantum dot / indium sulfide heterojunction electromagnetic wave absorbing material with a sulfur vacancy concentration of 3.8% to 5.7%. The addition amount of the sulfur source is controlled by regulating the addition amount of the thioacetamide in the hydrothermal reaction process, the introduced sulfur vacancy concentration is accurately controlled, the In-O covalent bond is formed at the interface between the graphene quantum dot and the indium sulfide, the interface covalent bridging structure is formed, the interface charge transfer efficiency is accelerated, the built-in electric field in the interface is enhanced, stronger interface polarization loss is induced, and the performance of high absorption intensity and wide bandwidth of the composite wave absorbing material is realized.

The invention discloses a preparation method and application of a pyrenyl imine covalent organic framework material, and belongs to the technical field of materials. The preparation method comprises the following steps: dissolving 4, 4 ', 4', 4 ''-(pyrene-1, 3, 6, 8-tetrayl) tetraphenylamine and 3, 3 '-dimethoxy-[1, 1'-biphenyl]-4, 4 '-diformaldehyde in an organic solvent, fully mixing, and adding a catalyst to obtain a mixed solution; and freezing the mixed solution with liquid nitrogen, exhausting air, removing oxygen, carrying out a heating reaction, obtaining a yellow precipitate after the reaction is finished, and carrying out filtering, washing and vacuum drying treatment to obtain the pyrenyl imine covalent organic framework material. Pyrenyl and imine bonds on the pyrenyl imine covalent organic framework material structure prepared by the invention can provide a large number of binding sites bound with iodine, and the pyrenyl imine covalent organic framework material has the advantages of high crystallinity, large specific surface area, strong stability and the like, and can be used as a solid adsorption material for effective iodine vapor adsorption.

The invention discloses a preparation method and application of a sulfonyl-containing defect ternary donor-acceptor organic polymeric material. The material has excellent performance in the aspect of hydrogen production by photocatalytic decomposition of water. According to the present invention, 1, 3, 6, 8-tetra (4-formaldehyde phenyl) pyrene, 3, 7-diaminodibenzo [B, D] thiophene-5, 5-dioxide and trialdehyde phloroglucinol are adopted as synthesis precursors, and a Schiff base reaction is performed to obtain the sulfonyl-containing defect ternary donor-acceptor organic polymerization material; according to the ternary donor-acceptor structure and the double channels located at the defect, a channel for directionally and rapidly transferring current carriers is constructed, separation of electron hole pairs is accelerated, the migration rate of electrons is increased, the energy barrier of hydrogen production reaction is reduced, and meanwhile the hydrophilicity of the material is improved through sulfuryl. The material is stable in property, does not cause secondary pollution, can be recycled, and shows excellent performance of photocatalytic decomposition of water to produce hydrogen.

The invention relates to the technical field of organic pollution treatment, in particular to a lignin grafted graphene oxide quantum dot material, a preparation method thereof and a polycyclic aromatic hydrocarbon degradation method, and the material is prepared by grafting reaction of alkaline lignin and graphene oxide quantum dots under alkaline conditions. When the strain is applied to degradation of polycyclic aromatic hydrocarbon, the strain and a Microbacterium sp.W1-2 strain with the preservation number of CGMCC (China General Microbiological Culture Collection Center) NO.35223 form a synergistic degradation system. The material can significantly promote thallus growth, enhance pollutant interface mass transfer and bioavailability, and realize efficient degradation in a dark environment without photocatalysis. Experiments show that under the condition that the initial concentration of benzo [a] pyrene is 5000g / L, by adding the material, the degradation rate within 6 hours can be increased to 651.4 g / h, which is increased by 2.9 times compared with that of a single strain; and the removal rate within 72 hours reaches 86.4%. The method has the advantages of being high in degradation efficiency, short in period, high in environmental adaptability, independent of illumination and the like, and is suitable for rapidly repairing the polycyclic aromatic hydrocarbon in the industrial wastewater.

The invention discloses a coking enterprise peripheral soil benzopyrene monitoring distribution optimization method based on a CALPUFF model, and belongs to the technical field of environmental monitoring, and the method comprises the steps: obtaining annual discharge amount and pollution source parameters of benzopyrene, inputting the CALPUFF model, and integrating meteorological, terrain and land coverage data to construct a three-dimensional meteorological element field, the atmospheric diffusion and dry-wet sedimentation process of benzopyrene is simulated to determine the pollution range; monitoring points are arranged in high-value areas around an enterprise and a factory boundary based on settlement flux distribution, the downstream of a prevailing wind direction and a soil background value area, and the benzopyrene content in soil is detected by referring to the national standard. The monitoring efficiency and the data reliability are improved by accurately simulating the pollution transmission process and the differentiated point distribution strategy, and the method is suitable for monitoring the benzopyrene pollution of the soil around the coking enterprise.

The invention provides a preparation method and application of a double-ligand MOFs photocatalyst, and relates to the technical field of preparation of MOFs photocatalysts. According to the double-ligand MOFs photocatalyst, an H2TCPP ligand is introduced into MOFs (NU-1000) by using an in-situ synthesis method, and meanwhile, a part of ligand 1, 3, 6, 8-quadruplex (p-benzoic acid) pyrene (H4TBAPy) is reserved, so that the double-ligand MOFs photocatalyst is prepared; by introducing H2TCPP, transfer of interface electrons can be promoted, an energy band structure is adjusted, and the absorption efficiency of the catalyst to visible light and the photocatalytic activity of the catalyst are remarkably improved. According to the double-ligand MOFs photocatalyst prepared by the preparation method provided by the invention, NTP can be efficiently removed through photocatalytic degradation, and an effective method is provided for degradation of NTP.

The application belongs to the technical field of polymer synthesis, and provides a preparation method of a polyimide covalent organic framework.The application mixes anhydride compounds (one or more of the following: pyromellitic dianhydride, 1,4,5,8-naphthalene tetracarboxylic anhydride and 3,4,9,10-perylenetetracarboxylic dianhydride) and an alcohol solvent to perform pre-reaction to obtain a carboxylic esterate solution; disperses amino blocks (tris(4-aminophenyl)amine, 1,3,6,8-tetrakis(4-aminophenyl)pyrene, etc.) to obtain an amino block dispersion solution; mixes the amino block dispersion solution and the carboxylic esterate solution to perform reaction to obtain the polyimide covalent organic framework.The preparation method of the application can be performed under normal pressure, and the operation is safer; meanwhile, the preparation method of the application is not performed in a sealed tube, and can be used for mass production of the polyimide covalent organic framework.