140 results about "Pyrene" patented technology

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 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.

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 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 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.

The application relates to the field of supramolecular chemistry, and discloses a peripheral trifluoromethyl functionalized polybenzyl ether dendrimer gelator, a preparation method and application thereof. The peripheral trifluoromethyl functionalized polybenzyl ether dendrimer gelator is shown in the following formula, can form stable supramolecular organic gels or supramolecular self-assembly systems in various organic solvents or mixed solvents through the synergistic effect of multiple pi-pi interactions between peripheral aromatic rings and F...H weak hydrogen bonds, has a minimum gelation concentration CGC of 3.2 mg / mL, and is easy to be functionally modified, for example, a gel with an aggregation-induced emission performance is prepared by introducing 1-pyrene or 9-anthracene functional groups. The preparation method of the gelator is efficient, high-yield and high-purity.

The invention discloses a preparation method of a conjugated microporous polymer and application of the conjugated microporous polymer in degradation of bisphenol A, and relates to the field of conjugated microporous polymers. The invention aims to solve the problems of high catalyst cost, poor stability, low utilization rate of active substances and limitation on large-scale industrial application in the catalytic degradation of bisphenol A by using a catalyst in the prior art. The structural formula of the conjugated microporous polymer is shown in the specification. The method comprises the following steps: 1, adding 1, 3, 6, 8-tetrabromo pyrene, 1, 3, 5-triacetylene benzene, tetrakis (triphenylphosphine) palladium and cuprous iodide into a mixed solvent of N, N-dimethylformamide and triethylamine to obtain a mixed solution; 2, hydrothermal reaction; and 3, cleaning and drying. According to the application of the conjugated microporous polymer to adsorption and / or degradation of bisphenol A in water, the method is simple and easy to operate, the degradation efficiency is high, the mineralization rate is high, the conjugated microporous polymer is repeatable, the use cost is low, and the conjugated microporous polymer is suitable for large-scale popularization and application.

The invention relates to a cyclic bisazo initiator for preparing EVOH as well as a preparation method and application of the cyclic bisazo initiator, the initiator is a cyclic bisazo compound, an aromatic ring is used as an intermediate structure of the compound, tetrahydropyridazine is coupled to an adjacent position of the aromatic ring, and the aromatic ring is selected from any one of naphthalene, anthracene, pyrene and perylene. Compared with the prior art, the initiator provided by the invention has a ring rigid structure and two azo groups, can be rapidly initiated to generate free radicals with a certain concentration, is high in polymerization efficiency, and effectively improves the performance of an EVOH product.

This invention discloses a benzo[a]pyrene-degrading fungus, *Nigrospora osmanthi* DL-7, for use in petroleum-contaminated soil, along with its inoculum and applications. This invention domesticated, isolated, and identified a benzo[a]pyrene-degrading strain, *Nigrospora osmanthi* DL-7, from petroleum-contaminated soil in Ningbo. DL-7 can utilize benzo[a]pyrene as a carbon source, even at an initial benzo[a]pyrene concentration of 25 mg·L⁻¹. ‑1 After culturing in an inorganic salt broth for 7 days, the pure DL-7 strain achieved a degradation rate of over 85% for benzo[a]pyrene. When prepared as a bacterial agent, the degradation rate of benzo[a]pyrene could be increased to over 90%. Therefore, this strain and its bacterial agent have good application potential in the bioremediation of polycyclic aromatic hydrocarbons.

The invention discloses a method for degrading benzo (alpha) pyrene in water by using gamma rays, belongs to the technical field of sewage treatment, and aims to solve the technical problem that the degradation efficiency and the degradation degree of the benzo (alpha) pyrene in the water by using the gamma rays in the prior art need to be further improved. An iron circulation-peroxymonosulfate composite system composed of a quaternized porous aromatic material, a sulfonated silicon-based hybrid channel material and a cross-linked beta-cyclodextrin material in a synergistic manner is constructed, and the quaternized porous aromatic material realizes stable enrichment of pollutants and peroxymonosulfate through a positive electricity interface; the sulfonated silicon-based hybrid channel material provides a continuous coordination and electron transfer environment for iron species, the cross-linked beta-cyclodextrin material performs confinement and secondary inclusion on hydrophobic pollutants and intermediates, and the sulfonated silicon-based hybrid channel material, the cross-linked beta-cyclodextrin material, the hydrophobic pollutants and the intermediates form a mutually linked reaction path in structure and function, so that construction and maintenance of a reaction micro-domain and continuous organization of the reaction path are realized, and the hydrophobic pollutants and the intermediates are subjected to continuous coordination and electron transfer. Therefore, the degradation efficiency and the cycling stability of pollutants are remarkably improved.

The present application relates to fluorescent nanoparticles based on fluorinated zwitterionic random copolymer and its preparation method and application, the fluorescent nanoparticles include the single chain nanoparticles formed by poly trifluoroethyl methacrylate-co-methacryloyloxyethyl sulfobetaine, the molecular chain end of the poly trifluoroethyl methacrylate-co-methacryloyloxyethyl sulfobetaine is connected with ACQ type group selected from anthryl, perylene imide group and pyrene base or AIE type group selected from tetraphenyl ethylene base, carbazole base and cyanine-containing triphenyl ethylene group.The fluorescent nanoparticles based on the poly trifluoroethyl methacrylate-co-methacryloyloxyethyl sulfobetaine of the present application that terminal fluorescent group is terminated, has excellent controllable fluorescent luminescence performance.It is considered that the single chain nanoparticles have isolation effect, avoid the fluorescence quenching effect of ACQ type group, and can provide limited microenvironment for AIE type group, ensure the fluorescent luminescence performance of nanoparticles.

This invention provides a method for preparing pomegranate peel charcoal, the pomegranate peel charcoal itself, and a method for quality control thereof. The preparation method includes: drying pomegranate peel to constant weight; heat-treating the dried pomegranate peel at 180°C to 230°C for 5 to 20 minutes to obtain pomegranate peel charcoal. This method has a clear process, low energy consumption, and the obtained pomegranate peel charcoal contains less than 5 μg / kg of benzo[a]pyrene, and can enrich active ingredients such as punicalin. The quality control method includes: irradiating the sample with excitation light, collecting the light radiation signal after irradiation stops, and generating an evaluation index based on the signal. The preferred evaluation index is the initial luminescence intensity Y0, which is positively correlated with the punicalin content and antioxidant activity. By substituting the light radiation signal into a pre-established correlation model, the punicalin content and antioxidant activity of the sample can be determined. The preparation method of this invention is mild and controllable, with high safety, and the quality control method is rapid and non-destructive, making it suitable for the fields of traditional Chinese medicine decoction pieces, functional food raw materials, and dietary supplements.

The application discloses a solid-phase extraction agent and a preparation method and application thereof. Raw materials of the solid-phase extraction agent include cigar stems and shavings, and the mass ratio of the cigar stems to the shavings is 1:1-2. The above raw materials are all natural plants, and in addition to being rich in vascular systems and cellulose, the structure formed by xylem and phloem arranged in bundles and a variety of capillary pore structures make the pores rich, and the structure is provided with rich polar hydroxyl and hydrophobic aromatic functional groups. After being prepared as the solid-phase extraction agent, the structure can form pi-pi bonds and hydrogen bonds with benzo[a]pyrene, has strong adsorption capacity for the benzo[a]pyrene and high adsorption stability, and due to the rich pores, has good permeability. The speed of the benzo[a]pyrene in the solution after adsorption through the extraction column is faster, the adsorption enrichment and purification efficiency of the benzo[a]pyrene in the solution after adsorption is high, and the cost is low and the structure is green and environment-friendly.

The invention discloses a novel bismuth-based chelate CT contrast agent and a preparation method and application thereof. The synthesis method comprises the following steps: reacting 2, 6-pyridine dimethyl carbinol with thionyl chloride to obtain 2, 6-bis (chloromethyl) pyridine; the preparation method comprises the following steps: carrying out a heating reaction on 2-(4-methylphenyl)-1, 2, 4-triazine-2-ketone, N, N ', N'-tri (p-toluenesulfonyl) diethylenetriamine and an inorganic base in a solvent, and carrying out concentrated sulfuric acid deprotection to obtain an intermediate pyclen; the preparation method comprises the following steps: heating and reacting pyrene and halogenated carboxylic ester in a polar organic solvent under an alkaline condition, and hydrolyzing to obtain a ligand product; and heating and chelating the ligand product and a bismuth agent to prepare the target bismuth-based chelate. Laboratory large-scale preparation of the small-molecule bismuth-based chelate CT contrast agent is achieved, and the prepared nonionic contrast agent has low osmotic pressure, high stability, high water solubility and good biological safety and is used for CT imaging of digestion, urinary and circulatory systems.

The application discloses a hydrogen-bonded organic framework material and a preparation method and application thereof; the hydrogen-bonded organic framework material comprises an organic ligand and an organic solvent molecule, and a chemical formula of the hydrogen-bonded organic framework material is [(L) x (G) y ], wherein L is 1,3,6,8-tetra (4-methoxyphenyl) pyrene, G represents a good solvent; x=1-2, and y=1-4. In the HOFs construction, different solvent molecules are introduced, a hydrogen-bonded organic framework material with adjustable multi-color light emitting characteristics of fluorescence and phosphorescence is constructed, the material is controlled from blue light to blue-green light to yellow-orange light, and the fluorescence and the phosphorescence are controlled in the hydrogen-bonded organic material containing different solvents. The application provides a new way for constructing multi-emitting materials by using a single molecule platform.

The invention provides a small molecule compound A1 which has a good treatment effect on metabolism-related fatty liver diseases. The structural formula of the hydroxyl pyrene compound A1 is shown in the specification. The invention further provides a medicine for preventing and / or treating the metabolism-related fatty liver disease and application of the compound in vivo and in vitro. In-vivo and in-vitro experiments prove that A1 has a remarkable treatment effect on metabolism-related fatty liver diseases. Liver fatty degeneration can be improved, and a definite reversing effect on hepatic fibrosis is achieved. Meanwhile, the compound A1 has better safety, and provides an effective means for preventing and treating the metabolism-related fatty liver diseases.

This invention provides a covalent organic framework material, its preparation method, and its applications. The invention selects 1,3,6,8-tetra(4-aminophenyl)pyrene as the central building block and achieves trapped states within covalent organic frameworks (COFs) by controlling the symmetry of the active site (benzothiadiazole, BT). Compared to its centrosymmetric counterpart, by breaking the symmetry of the central BT core, the density of trapped states in COFs can be significantly reduced, and the lifetime of shallow trapped states can be extended to 1160.02 picoseconds. This allows more photogenerated electrons to participate in the photocatalytic reaction, ultimately achieving significant photocatalytic reduction of uranium (VI) (>99%). This invention elucidates for the first time the crucial role of symmetry breaking in suppressing excited-state decay in COFs, providing profound insights into how to improve the photocatalytic performance of COFs in environmental remediation.

The application discloses a room-temperature phosphorescent material of a phenylacetylene node-substituted pyrene derivative and a preparation method thereof. The pyrene is used as a substrate, and phenylacetylene is selectively substituted at a node (2 position) of the pyrene. Compared with a pyrene derivative obtained by substituting phenylacetylene at an anti-node (1 position) of the pyrene, the pyrene derivative obtained by substituting phenylacetylene at the node destroys the conjugation of the substitution site, maintains the rotation freedom between the substituent and the pyrene core, thereby enhancing the spin-orbital coupling, and enabling the room-temperature phosphorescence of the pyrene derivative. The obtained room-temperature phosphorescent material has the advantages of high luminous efficiency and long lifetime.

The invention discloses a Schiff base compound generated by condensation of 1-pyrenecarboxaldehyde and 4-(1, 2, 4-triazole-1-yl methyl) aniline as well as a preparation method and application of the Schiff base compound. The Schiff base compound has certain fluorescence and anti-DPPH free radical activity, and has potential application value in preparation of fluorescent materials and antioxidants.

The invention discloses a surfactant for recycling a lithium iron phosphate negative electrode material and a preparation method of the surfactant, and belongs to the technical field of battery recycling. Comprising the following steps: S1, synthesis of PFPE-CTA: carrying out esterification on PFPE-OH and 4-cyano-4-[(dodecyl thiocarbonyl) sulfenyl] valeric acid under the catalysis of DCC / DMAP, so as to obtain PFPE-CTA; s2, copolymerization is carried out on AA and DOPAM under the initiation of PFPE-CTA; s3, grafting 6-amino-beta CD to the carboxyl of the copolymer under the activation of EDC / NHS; s4, modifying the graphene quantum dots with 1-pyrene butyric acid succinimide ester; and the betaCD copolymer and pyrene-GQDs are compounded through an inclusion effect. The surfactant prepared by the invention can realize high recovery rate of graphite, low impurity residue, low foam, easy separation and excellent regeneration performance.

The application discloses an InP / ZnS quantum dot-based TTA-UC luminescent material and a preparation method and application thereof. The InP / ZnS core-shell quantum dot is used as a triplet state sensitizing agent, and 1-pyrene carboxylic acid is used as a bridging molecule to form a quantum dot-PCA / / DPA ternary composite interface with an organic annihilator 9,10-diphenyl anthracene. Under the premise that the size of the quantum dot is not obviously changed, by adjusting the Br / Cl halogen ratio in the indium source and the zinc source, the quantum dot lattice defect passivation and the triplet state energy transfer level matching are simultaneously realized, so that the triplet state energy transfer efficiency of the system is significantly improved, and the highest (19.75%) up-conversion fluorescence quantum yield in the quantum dot composite system with DPA as the annihilator is obtained. The preparation scheme can be expanded to other TTA-UC systems with InP quantum dots as the sensitizing agent, and can be widely applied to the fields of photocatalysis, solar cells and biological imaging.

The invention discloses a small molecule material based on condensed ring tert-butyl pyrene, a preparation method thereof and application of the small molecule material in an OLED (Organic Light Emitting Diode), and belongs to the technical field of organic photoelectric materials. The material is constructed by condensed ring tert-butyl pyrene, pyrene and carbazole are hybridized to form a novel carbazole condensed ring derivative with a large molecular conjugated structure and high stability, and the large conjugated plane structure can enhance the intermolecular stacking property, reduce the hole transport energy barrier and improve the hole mobility; due to the stereo steric effect of tert-butyl, excessive aggregation of molecules can be avoided, and charge transfer traps and non-radiative recombination are reduced; the phosphoric acid anchoring group can optimize interface bonding with the ITO anode, and the anode work function is matched to reduce the hole injection barrier. When the material is used as a core component of an OLED hole transport layer, the charge transport efficiency can be effectively improved, material crystallization and interface charge recombination in device operation can be inhibited, the brightness, efficiency and long-term stability of an OLED device can be remarkably improved, and the material has important significance in promoting the application of an OLED in the fields of high-end display and illumination.

The application belongs to the field of synthesis of organic semiconductors, and discloses a narrow-band emission pyrene-based blue light material and a preparation method and application thereof.The narrow-band emission pyrene-based blue light material has a structure as shown in formula (1).The pyrene-based organic functional light-emitting material prepared by taking the pyrene intermediate of the application as a precursor is prepared by introducing a biphenyl and triphenylamine or tetraphenylethylene at positions 1 and 3 of the pyrene;in the case of triphenylamine as a strong electron-donating group, the biphenyl units substituted at different positions are used to build the molecular conformation through space conjugation, and the tetraphenylethylene unit plays an important role in realizing the AIE characteristics.The preparation method is simple, the reaction condition is mild, the yield is high, the prepared material has good thermal stability, (deep) blue light emission, the solid quantum yield is greater than 0.7, the highest can be up to 0.9, and the maximum half-peak width is between 20-50 nm.The application is suitable for application scenarios such as high-definition display light-emitting devices.

The invention relates to a macroporous pyrene tetraketone-triazine covalent organic framework material as well as a synthesis method and application thereof, and belongs to the technical field of organic functional materials. The material is prepared from 2, 7-aminopyrene-4, 5, 9, 10-tetraketone and 4, 4 ', 4' '-(1, 3, 5-triazine-2, 4, 6-triyl) tri (benzaldehyde) through polymerization. The material has a relatively large mesoporous structure, high crystallinity and rich redox active sites. The large-size mesoporous structure is favorable for keeping relatively high ion flux of the diaphragm, the bidirectional catalytic action of pyrene tetraketone conjugated carbonyl can improve the reaction kinetics of the high-load lithium-sulfur battery, and the soft-package lithium-sulfur battery prepared under the conditions of high-activity load and poor electrolyte shows stable cycle performance and relatively high specific capacity.

The invention belongs to the technical field of materials and advanced oxidation, and particularly relates to a phenanthroline-containing pyrenyl 2D covalent organic framework material as well as a preparation method and application thereof, and the covalent organic framework material is synthesized by taking 1, 3, 6, 8-tetra-(p-aminophenyl)-pyrene and 4, 4 '-(1, 10-phenanthroline-3, 8-diyl) dibenzaldehyde as precursors through Schiff base condensation reaction. According to the COFs material synthesized by the invention, on the basis of containing phenanthroline, by increasing benzene rings, regulation and control on covalent organic framework electron delocalization on the molecular level are realized, so that the capability of activating PMS to degrade organic pollutants is enhanced, and the COFs material is suitable for not only the organic pollutant bisphenol A, but also the organic pollutant PMS. The COFs prepared by the method also has an excellent degradation effect on other organic pollutants such as sulfadiazine and atrazine, and in addition, the COFs also has good cycle stability and does not generate secondary pollution.

The present application relates to a kind of molybdenum disulfide nanosheet and its large-scale preparation method, and the preparation method comprises the following steps: sulfonic acid group precursor is dissolved in water with trinitro-pyrene ultrasonic, hydrothermal reaction is carried out, the initial product is filtered, dialysis and drying, obtain graphene quantum dot powder;Graphene quantum dot powder is mixed with molybdenum disulfide powder and carries out ball milling reaction, centrifugal separation and washing, obtain molybdenum disulfide nanosheet composite sheet.In the ball milling process, graphene quantum dot has abundant surface functional groups, increases the electron density of sulfur atom and molybdenum atom and then controls molybdenum disulfide structure to form nanosheet.Compared with prior art, the preparation method of the present application is simple, low in cost, mild in reaction, small in toxicity and simple in post-processing, can prepare macro (gram level), good quality, colloid state stable molybdenum disulfide nanosheet, the method for preparing nanoscale molybdenum disulfide nanosheet is suitable for both laboratory research and industrial mass production.