670 results about "Porphyrin" patented technology

The invention discloses a porphyrin-based covalent organic framework nano material, a preparation method and application of the porphyrin-based covalent organic framework nano material in polyurethane, and belongs to the field of functional nano materials and antibacterial materials. The porphyrinyl covalent organic framework nano material is prepared from 5, 10, 15, 20-tetra (4-aminophenyl) porphyrin and bis-(5-formyl furfuryl) ether through a Schiff base reaction, and the structural formula of the porphyrinyl covalent organic framework nano material is # imgabs0. The porphyrinyl covalent organic framework nano material prepared by the invention has relatively high photothermal conversion efficiency when being used as a photothermal agent, and has a relatively good sterilization effect under the condition of relatively low concentration. Besides, based on the porphyrin-based covalent organic framework nano material, a WPUS / Por-COF composite film is prepared, the composite film has excellent mechanical properties and excellent photothermal conversion efficiency, and has a good sterilization effect under the condition of relatively low concentration, bacteria can be inactivated within a short time, and the sterilization rate can reach 99% or above.

The invention discloses a macrocyclic covalent organic polymer material for inhibiting a pi-pi stacking effect and application of the macrocyclic covalent organic polymer material, and belongs to the technical field of biological medicines. The preparation method comprises the following steps: adding 5, 10, 15, 20-tetra (4-ethynylphenyl) copper porphyrin and a macrocyclic monomer into an organic solvent in a protective atmosphere, and carrying out solvothermal reaction in the presence of a catalyst and alkali to obtain the macrocyclic covalent organic polymer material. According to the invention, 5, 10, 15, 20-tetra (4-ethynylphenyl) copper porphyrin and a macrocyclic monomer form a porous polymer MCP-CU-POP, the material utilizes the photo-thermal capability to combine the effects of simulated photo-thermal (PTT), photodynamic (PDT), peroxidase (PODs) and glutathione peroxidase (GSH-Px) to perform synergistic antibiosis, and the inherent characteristics of an infected microenvironment can also be utilized to induce death of bacteria, so that the antibacterial property of the material is greatly improved, and the antibacterial property of the material is greatly improved. And the microenvironment of the bacterial infection part can be adjusted, so that the recovery of the bacterial infection wound can be obviously accelerated.

The invention discloses a porphyrinyl prismatic coordination molecular cage and a preparation method and application thereof.The preparation method comprises the steps that H2TMPP, Au (III) metal salt and Pd (OAc) 2 are dissolved in a solvent, an acidity regulator is added, after hydrothermal treatment, mother liquor is removed, obtained crystals are washed, and the porphyrinyl prismatic coordination molecular cage Pd-TMPP (Au) is obtained. 6 PdCl2 units and ligand combinations (H2TMPP) x [TMPP (Pd)] y [TMPP (Au)] zClz form 10 complexes in total, and the Pd-TMPP (Au) comprises at least 5 of the complexes. According to the invention, a Pd-TMPP (Au) hexagonal prism high-entropy coordination molecular cage based on Au (III) is synthesized by using a hydrothermal method, and the unique arrangement mode of the (metal) ligands in the cage inhibits pi-pi stacking of a porphyrin photosensitizer, so that the effect of PDT is improved.

The invention provides a composite photo-thermal hydrogel for seawater desalination and a preparation method and application thereof, the hydrogel has a structural unit of a structure as shown in a formula I. COF with photo-thermal performance is compounded with the hydrogel, and the hydrogel has a three-dimensional long-range ordered pore structure to promote transmission of water molecules; and the COF dispersed in the material contains porphyrin and a C = N double-bond connection structure, so that the material has excellent photothermal conversion efficiency. Therefore, under the irradiation of sunlight, the composite photo-thermal hydrogel disclosed by the invention can realize photo-thermal conversion to realize seawater evaporation, the seawater evaporation rate reaches 3.6 kgm <-1 > h <-1 >, and the performance is improved by about 3 times compared with that of a traditional carbon-based material. According to the preparation method of the composite photo-thermal hydrogel, large and complex equipment is not involved in the preparation method, the preparation technological process is simple, and industrial large-scale production is facilitated; and the reaction temperature in the preparation process is low, the energy consumption is also reduced, and the cost advantage is remarkable.

The invention relates to the technical field of analysis and detection, in particular to a fluorescent switch sensor based on quantum dot-nano porphyrin and application. The specific technical scheme is as follows: the fluorescent switch sensor is constructed by utilizing cadmium telluride quantum dots modified by mercaptosuccinic acid and a 5, 10, 15, 20-tetra (4-nitrophenyl) porphyrin nano material modified by a cationic surfactant hexadecyl trimethyl ammonium bromide. And the method has a good enrichment effect on zearalenone. The sensor has high sensitivity, high selectivity and anti-interference performance, can accurately analyze trace zearalenone in actual grain samples (corn, rice, soybean and the like), and has the advantages of simplicity in operation, low detection limit, high sensitivity, low cost and the like.

The invention provides an efficient environment-friendly petroleum passivator as well as a preparation method and application thereof, and belongs to the technical field of passivators. The preparation method comprises the following steps: reacting bismuth nitrate with tetra (4-carboxyl phenyl) porphyrin and benzoic acid to prepare a carboxyl phenyl porphyrin bismuth-MOF material, reacting antimony nitrate with tetra (4-pyridyl) porphyrin and benzoic acid to prepare a pyridyl porphyrin antimony-MOF material, and performing sol-gel reaction on lanthanum isopropoxide and cerium isopropoxide to prepare lanthanum-cerium sol; the preparation method comprises the following steps: mixing calcium nitrate, magnesium chloride, organic acid, organic amine and hydrogen peroxide for reaction to prepare a calcium / magnesium organic matter, mixing the calcium / magnesium organic matter with other substances, adding the mixture into an acetonitrile / ethanol mixed solvent, and uniformly stirring and mixing to prepare the efficient environment-friendly petroleum passivator. The high-efficiency environment-friendly petroleum passivator prepared by the invention is green, safe, non-toxic and efficient, has better capturing and passivating effects on metal ions such as nickel and vanadium in the catalytic cracking reaction process of heavy oil, improves the activity of a catalyst, prolongs the service life of the catalyst, and thus, has a wide application prospect.

The invention discloses a metalloporphyrin porous electro-catalytic material with a bcu topological network structure, a preparation method of the metalloporphyrin porous electro-catalytic material and application of the metalloporphyrin porous electro-catalytic material in electro-catalytic oxygen evolution. A quadrangular pyrenyl skeleton molecule with eight connecting nodes and a quadrangular porphyrin skeleton molecule with eight connecting nodes are adopted, an ordered and expanded double-interpenetrating three-dimensional bcu topological network framework material is obtained through [8 + 8] imine condensation, and metallization of a porphyrin unit is further realized through metal ion post-modification, so that the porphyrin unit is obtained. The metalloporphyrin porous electro-catalysis material is obtained; the material as a heterogeneous catalyst has more excellent mass transfer efficiency and more accessible catalytic sites, has a wide application prospect in the field of catalysis, and particularly has an ideal catalytic effect in an electro-catalysis oxygen evolution reaction; # imgabs0 #

The invention discloses a hydrophilic polyethersulfone ultrafiltration membrane based on metalloporphyrin coordination modification as well as a preparation method and application of the hydrophilic polyethersulfone ultrafiltration membrane. According to the ultrafiltration membrane, a membrane casting solution is prepared by blending a polyether sulfone base material, an organic solvent, a pore-foaming agent and tetra (4-aminophenyl) porphyrin, and the membrane casting solution is cured and formed in a coagulating bath containing ferric ions through a phase inversion process. The preparation method is characterized in that porphyrin compounds and iron ions are subjected to an in-situ coordination reaction in the phase inversion process to form a stable metalloporphyrin complex network structure, and the prepared ultrafiltration membrane has the following advantages that the hydrophilicity is increased, and the pure water flux is increased; the protein rejection rate is not less than 95%; the antibacterial property and the anti-pollution property are excellent. The process is simple and controllable, and the obtained membrane material has important application value in the field of biological medicine separation.

The invention relates to a porphyrin metal organic framework composite material, a preparation method and a biogenic amine SERS (Surface Enhanced Raman Scattering) array sensor. The preparation method of the composite material comprises the steps that a copper precursor solution is added into a surfactant, heating reaction is conducted, a reducing agent is added, heating reaction is conducted, and copper nanoparticles are obtained; the preparation method comprises the following steps: adding a transition metal salt and a surfactant into an organic solvent, adding a porphyrin ligand, carrying out a solvothermal reaction, carrying out centrifugal separation, washing and drying to obtain a porphyrin metal organic framework material, and dispersing the porphyrin metal organic framework material into the organic solvent to obtain a dispersion liquid A; and dispersing copper nanoparticles in the dispersion liquid A, carrying out a second heating reaction, and carrying out centrifugal separation, washing and drying to obtain the porphyrin metal organic framework composite material. The invention also provides the porphyrin metal organic framework composite material prepared by the preparation method, and the application of the porphyrin metal organic framework composite material as a biogenic amine SERS array sensor. The invention solves the problem that the accuracy of the detection result is influenced because the traditional biogenic amine detection method is difficult to realize field detection.

The invention belongs to the field of photocatalytic preparation of hydrogen peroxide, and relates to a novel secondary amine linked covalent organic framework material (AR-COF) as well as a preparation method and application thereof. According to the material, tetraaldehyde phenyl porphyrin and 2, 5-diamino-1, 4-benzenediol dihydrochloride are subjected to a Schiff base reaction to synthesize an imine bond connected porphyrinyl covalent organic framework (IM-COF), and then synthesis post-modification (PSM) is performed on the imine bond connected porphyrinyl covalent organic framework (IM-COF) so that the imine bond connected porphyrinyl covalent organic framework (IM-COF) and sodium borohydride can be subjected to a reduction reaction to generate AR-COF. The photocatalytic stability of the material is maintained through modification after synthesis, the catalytic activity is improved, and the original crystal structure is not damaged. A photocatalytic hydrogen peroxide production experiment shows that the catalytic activity of AR-COF under 420 nm monochromatic light is superior to that of IM-COF, the yield under an oxygen condition reaches 7.79 mmol.g <-1 >. H <-1 >, and hydrogen peroxide can be stably produced. The method utilizes solar energy for green synthesis under mild conditions, and provides a safe and efficient method for hydrogen peroxide production.

The invention relates to a porphyrin-based iron metal organic framework (Fe-TCPP) catalyst for improving photoresponsiveness, which is characterized in that the Fe-TCPP nano catalyst is prepared by using an iron source and meso-tetra (4-carboxyphenyl) porphin (TCPP) as precursors through a simple solvothermal method, assisting coordination by virtue of polyvinylpyrrolidone (PVP), performing sealed reaction after ultrasonic dispersion, and preparing the Fe-TCPP nano catalyst. A purple suspension is obtained. And centrifuging, washing and drying to obtain the nano rod-shaped Fe-TCPP metal organic framework material. The Fe-TCPP catalyst prepared by the preparation method disclosed by the invention has a regular crystal structure and good dispersity, and can be stably coordinated to form a Fe-O cluster structure. The effective introduction of the TCPP enhances the charge transfer (LCCT) capability from the ligand to the metal cluster, effectively promotes the Fe (III) / Fe (II) circulation, and improves the photocatalysis-ozonation catalytic efficiency. The catalyst has the advantages of high thermal stability, less metal ion dissolution, good cycle performance and the like, and has wide application potential in the field of water treatment.

The invention discloses a multi-metal active site covalent organic framework material, a preparation method thereof and application of the multi-metal active site covalent organic framework material in activating PMS to degrade pollutants, the multi-metal active site covalent organic framework material comprises metalloporphyrin and bipyridine groups, when porphyrin loads metal, metal atoms are connected through coordination of two nitrogen sources of bipyridine, the metal atoms are connected through coordination of two nitrogen sources of bipyridine, and therefore the multi-metal active site covalent organic framework material is obtained. Multi-metal active sites are formed; the metal active sites are increased, and the distance between metals is adjusted, so that the framework material shows excellent catalytic activity. The covalent organic framework material is prepared through a solvothermal reaction, the covalent organic framework material continues to react with a metal precursor to load metal, the preparation method is simple, a complex reaction process and harsh reaction conditions are not needed, and large-scale preparation can be achieved.

The invention relates to a method for recycling high-purity graphite from a negative electrode of a waste lithium battery by using a fine washing agent. The method comprises the following steps: preliminarily disassembling the waste lithium battery negative electrode to separate out a negative electrode plate; crushing and screening the negative plate by adopting a machine crusher, and collecting screened fine powder; carrying out heat treatment to remove the binder and other organic matters; stirring and soaking the graphite powder subjected to heat treatment, inorganic acid, sodium carbonate and a fine washing agent; filtering, washing a filter cake with deionized water, and drying to obtain high-purity graphite; the fine cleaning agent is prepared by the following steps: continuously irradiating acrylamide-beta-cyclodextrin, tetramercapto porphyrin, 1-butylene-2, 3, 4-tricarboxylic acid, dimethyl sulfoxide and a photoinitiator at room temperature for 30-80 minutes by keeping ultraviolet light of 365 nm and 10 mW / cm < 2 >, and distilling to remove dimethyl sulfoxide. The fixed carbon content of the recovered graphite can reach 99.98%.

The invention provides a porphyrin bimetal organic framework fluorescent probe, a preparation method and application of the porphyrin bimetal organic framework fluorescent probe in trivalent chromium ion detection. According to the preparation method, 5, 10, 15, 20-tetra (4-carboxyl phenyl) porphyrin and 2-amino terephthalic acid react with europium chloride hexahydrate and terbium chloride hexahydrate, so that the bimetal organic framework fluorescent probe is obtained. The fluorescent probe can be used for detecting Cr < 3 + > in water, and the detection limit is as low as 10.83 nM, so that the fluorescent probe can be used for rapid, high-sensitivity and high-selectivity detection of Cr < 3 + >.

This invention belongs to the field of lithium-ion battery technology, specifically relating to a method for constructing Si@COF-Co materials using porphyrin COF as a conductive nano-protective layer for nano-silicon and its application. The invention first adds a methanol solution of PEI to a methanol solution of nano-silicon, then dries it at high temperature to obtain PEI-modified nano-silicon Si-PEI. Next, Si-PEI and PVP are dispersed in o-dichlorobenzene / n-butanol, and then COF monomer and glacial acetic acid are added. After maintaining the mixture at 110-130℃ for 70-80 hours, it is washed, dried, and ground to obtain Si@COF. Finally, Si@COF and cobalt acetate tetrahydrate are dispersed in methanol, reacted at room temperature, and then washed, dried, and ground to obtain Si@COF-Co. This invention offers a simple, high-yield, and effective method. The synthesized material effectively alleviates the volume expansion of nano-silicon, improves the stability and reversibility of the electrode material, and can be used as a negative electrode material for lithium-ion batteries.

The invention discloses a non-noble metal ORR catalyst and a preparation method thereof, and belongs to the technical field of electro-catalysis. The method comprises the following steps: (1) adding 5, 10, 15, 20-tetra (4-cyanophenyl) porphyrin and nickel salt into an organic solvent, and synthesizing a supramolecular crystal precursor UPC-S7 through solvothermal reaction; (2) carbonizing the supramolecular crystal precursor UPC-S7 in an inert atmosphere to obtain a Ni-coated NC material; (3) oxidizing the Ni-coated NC material in an oxygen-containing atmosphere to obtain a Ni / NiO-coated NC material; and (4) sequentially soaking and etching the Ni / NiO-coated NC material by using a nitric acid solution and an ammonia water solution, and then washing and drying to obtain the non-noble metal ORR catalyst. The prepared catalyst does not contain precious metal such as platinum, the raw material cost is remarkably reduced on the basis of ensuring the ORR activity and stability of the catalyst, and a new scheme is provided for solving the cost bottleneck of a fuel cell.

The invention discloses a polypeptide fertilizer beneficial to cold resistance of crops and a preparation method thereof, and belongs to the technical field of agricultural fertilizers, the fertilizer is prepared by taking livestock and poultry blood (preferably pig blood) as a raw material, preparing high iron protein peptide through a compound protease hydrolysis process, and matching with a trace element compound, humic acid and a carrier. The preparation process comprises the steps of enzymolysis preparation of the ferritin peptide, fertilizer mixing, granulation, drying and the like. The polypeptide fertilizer disclosed by the invention takes the high-iron protein peptide as a core, the contained small-molecular amino acid polypeptide can enhance the antioxidant enzyme activity of crops at low temperature and reduce malonaldehyde accumulation, the porphyrin iron can promote chlorophyll synthesis and energy metabolism, and the high-iron protein peptide and the porphyrin iron cooperate to remarkably improve the cold resistance of the crops. Meanwhile, by cooperating with trace elements and humic acid, the cold resistance is enhanced, nutrient absorption of crops is promoted, the yield and quality are improved, multiple effects of resisting cold, improving quality, increasing yield and the like are achieved, the raw materials are wide in source, the cost is low, the preparation process is simple, and large-scale production and application are facilitated.

The invention provides a bismuth-based heterogeneous material for promoting healing of diabetic wounds and a preparation method and application thereof. The bismuth-based heterogeneous material comprises a bismuth-based porphyrin metal organic framework, and the surface of the bismuth-based porphyrin metal organic framework is modified with Au-Pt nanoparticles. According to the bismuth-based heterogeneous material disclosed by the invention, microenvironments of bacterial infection, high glucose, active oxygen damage, inflammatory disorder, pH rise and oxygen deficit of diabetic wounds are improved through multiple antibacterial effects and enzyme catalysis effects, so that the healing of the diabetic wounds is promoted.

The invention relates to the technical field of halogenated organic matter treatment, in particular to an axial Co-O coordination modified metalloporphyrin material and preparation and application thereof. The invention provides a preparation method of an axial Co-O coordination modified metalloporphyrin material, which comprises the following steps: mixing cobalt porphyrin powder and reduced iron powder to obtain a mixture, then carrying out ball milling in an inert atmosphere, and forming axial Co-O coordination by cobalt atoms in the center of cobalt porphyrin and oxygen atoms on the surface of the reduced iron powder to obtain the axial Co-O coordination modified metalloporphyrin material. The axial Co-O coordination modified metalloporphyrin material is obtained. According to the method, cobalt porphyrin and reduced iron powder are mixed, cobalt atoms in the center of cobalt porphyrin are coordinated with oxygen atoms under the action of mechanical force, the axial Co-O coordination modified metalloporphyrin material is obtained, and the material can be used for solving the problem of treatment of high-concentration organic wastewater.

The invention provides a porphyrin functionalized carbon nanotube compound. Medium-tetra (4-carboxyphenyl) porphyrin is covalently connected to the surface of an aminated carbon nanotube through an amido bond to form the compound. Stable amido bond connection is formed through amino-carboxyl condensation, and the bond energy is obviously higher than that of an ester bond. The invention also provides a preparation method of the porphyrin functionalized carbon nanotube compound, which comprises the following steps: carrying out carboxyl activation treatment on the meso-tetra (4-carboxyl phenyl) porphyrin by adopting a catalytic system consisting of N, N '-dicyclohexylcarbodiimide and N-hydroxysuccinimide; the preparation method comprises the following steps: performing ultrasonic treatment on aminated carbon nanotubes in N, N-dimethylformamide, adding the aminated carbon nanotubes into an activated meso-tetra (4-carboxyphenyl) porphyrin solution prepared in the step 1, performing stirring reaction at room temperature, and performing suction filtration and freeze drying to obtain a target product, namely the porphyrin functionalized carbon nanotube compound. A mild room-temperature stirring process is adopted, so that the dependence of a solvothermal method on high-temperature and high-pressure equipment is completely avoided, and the production cost is remarkably reduced.

The invention discloses a covalent organic framework antibacterial material with NO light-controlled release as well as a preparation method and application thereof, and belongs to the technical field of biological medicines. The covalent organic framework antibacterial material is a porous polymer taking a cyclodextrin inclusion compound and a porphyrin metal coordination compound as structural units; a plurality of porphyrin metal coordination compounds surround the cyclodextrin inclusion compound in each structural unit, and the porphyrin metal coordination compounds are not on the same plane; the cyclodextrin inclusion compound is obtained by inclusion of BNN6 with beta-cyclodextrin; the porphyrin metal coordination compound is a coordination compound of porphyrin and copper. The preparation method comprises the following steps: firstly preparing a cyclodextrin porphyrin porous polymer, then matching the cyclodextrin porphyrin porous polymer with copper and entrapping BNN6 to obtain a covalent organic framework antibacterial material, utilizing NO release and combining simulated photo-thermal, photodynamic, peroxidase and glutathione peroxidase to achieve synergistic antibacterial effect, and remarkably accelerating the recovery of bacterial infected wounds.

The invention relates to a porphyrin iron-based biomimetic enzyme catalytic membrane for water treatment as well as preparation and application thereof, and belongs to the technical field of catalytic membranes. The porphyrin iron-based biomimetic enzyme catalytic membrane comprises a microfiltration membrane basement membrane and a porphyrin iron-based biomimetic enzyme catalyst loaded on the surface of the basement membrane in a chemical crosslinking mode, and the porphyrin iron-based biomimetic enzyme catalyst contains a catalytic activity center structure of 'Fe-N' coordination. The porphyrin iron-based biomimetic enzyme prepared by the invention is similar to a catalytic active center structure of natural peroxidase, has high affinity with hydrogen peroxide, and can greatly improve the utilization rate of hydrogen peroxide and the steady-state concentration of reactive oxygen free radicals; the constructed bionic enzyme-membrane reactor integrates dual functions of membrane separation and enzyme catalysis, realizes efficient combination of mass transfer and reaction, and greatly improves the removal performance of new pollutants in water.

The invention relates to the field of gas sensing, and discloses a two-dimensional bimetallic Co-MOF / Zn-TCPP composite material, a preparation method and application thereof, a gas sensitive sensor, and a preparation method and application thereof. The two-dimensional bimetallic Co-MOF / Zn-TCPP composite material comprises a Zn-TCPP material, and the surface of the Zn-TCPP material is modified with a Co-MOF material. According to the method, a bimetal organic framework material is combined with a porphyrin compound to form a two-dimensional composite gas-sensitive material with high specific surface area, a porous structure and a bimetal synergistic effect, so that a two-dimensional bimetal gas-sensitive sensor with excellent performance is prepared. According to the sensor, the detection sensitivity of H2 is remarkably improved, the working temperature is reduced, and the limitations of insufficient sensitivity, high working temperature and the like of a traditional single metal oxide gas sensitive sensor are overcome.

The invention discloses a tetracycline detection method based on defect PCN-224-Pt NPs with high oxidase activity, and belongs to the technical field of ecosystem and public health detection. The method comprises the following steps: firstly synthesizing PCN-224, then synthesizing PCN-224 (at) Pt NPs, and finally carrying out tetracycline colorimetric sensing detection. According to the invention, the PCN-224 (at) Pt NPs is synthesized by growing platinum nanoparticles (PtNPs) on the surface of a PCN-224 nanocube in situ. By introducing defect engineering into a metal structure of PCN-224, vacancy defects and active sites are formed, so that generation of small-particle-size and uniformly dispersed platinum nanoparticles is realized, the load rate of PtNPs in the PCN-224-Pt NPs nano-enzyme is remarkably improved, and the oxidase activity of the PCN-224-Pt NPs nano-enzyme is further enhanced. As the PCN-224 has a porphyrin metal structure, the PCN-224 shows excellent tetracycline adsorption capacity, active sites of platinum are effectively covered, and the catalytic activity of the PCN-224-Pt NPs nano-enzyme is inhibited. Experiments show that the limit of detection (LOD) of the method is 0.04 [mu] M.

The invention belongs to the field of photocatalytic preparation of hydrogen peroxide, and relates to a porphyrin-based covalent organic framework material (IM) as well as a preparation method and application thereof. The material is synthesized through a Schiff base reaction of tetraaldehyde phenyl porphyrin and 2, 5-diamino-1, 4-benzenediol dihydrochloride, an imine bond connected covalent organic framework is formed, interlayer hydroxyl strengthens the structural orderliness and stability through hydrogen-bond interaction, a porphyrin large-pi conjugated system drives efficient transmission of electrons in the framework, and the separation efficiency of photon-generated carriers is improved. The obtained IM photocatalyst is good in crystallinity, a photocatalytic hydrogen peroxide production experiment shows that the hydrogen peroxide yield reaches 1470.24 [mu] mol.g <-1 > after IM reacts for 4 h under irradiation of an ultraviolet lamp, the yield is stably increased, and high catalytic activity and stability are shown. The method utilizes light energy for green synthesis of hydrogen peroxide under mild conditions, and provides an efficient and safe new strategy for hydrogen peroxide production.

The invention discloses an acoustic catalyst as well as a preparation method and application thereof, and belongs to the technical field of catalysts and drug therapy. NJU-319 is selected as an acoustic catalyst, NJU-319Pt is synthesized from a porphyrinyl linker (TAPP) and a hexaphenyl triphenyl unit (HFPTP) under a solvothermal condition, and the H2 generation efficiency of NJU-319Pt can be further improved. After intraperitoneal injection, the nano-drug NJU-319Pt catalyzes H2O to be reduced into H2 under ultrasonic irradiation, and meanwhile lactic acid is oxidized into pyruvic acid. The action mechanism comprises: removing ROS and relieving oxidative stress; by inhibiting an NF-kappa B pathway, the transformation of macrophages from M1 phenotype to M2 phenotype is promoted, and inflammation is reduced; mitochondrial membrane potential is reduced, EMs cell apoptosis is induced, and focus growth is inhibited. The research provides a brand new EMs treatment strategy, combines acoustic catalysis H2 generation with lactic acid oxidation, and provides a new direction for EMs treatment research.

The invention provides a mining polyurethane material for blocking spraying air leakage and a preparation method thereof, and belongs to the technical field of polyurethane. The preparation method comprises the following steps: carrying out surface treatment on a multi-walled carbon nanotube, mixing with porphyrin-Zn-MOF and polydopamine for modification to prepare a porphyrin-Zn-MOF polydopamine modified carbon nanotube, mixing with m-2DOPO-2NH2, reacting with KH560 modified nano silicon dioxide to prepare a modifier, mixing with polyether polyol and a catalyst, adding into water, adding a foaming agent and silicone oil, heating, stirring and mixing, transferring into a mold, carrying out heat preservation, and carrying out vacuum drying, so as to obtain a finished product. Adding diisocyanate, after foaming is completed and the temperature of the material is reduced to the room temperature, drying, heating and curing to prepare the mining polyurethane material for blocking spraying air leakage, adding the modifier into a polyurethane foaming system, so that the mechanical property and flame retardant property of the system are obviously improved, the antistatic property and the thermal stability are improved, the modifier can be uniformly dispersed in the system, and the flame retardant property and the antistatic property of the system are improved. And repeated spraying is avoided, the constructability is good, and wide application prospects are achieved.

The invention discloses a preparation method and application of a metal modified amino porphyrin COF material based on ferrocene dicarboxaldehyde, and the preparation method comprises the following steps: (1) adding ferrocene dicarboxaldehyde and 5, 10, 15, 20-tetra (4-aminophenyl) porphyrin into an organic solution, and carrying out ultrasonic mixing; (2) adding a catalyst into the dispersion liquid, ultrasonically mixing uniformly, and carrying out multiple freezing degassing circulation treatment; (3) after the treatment in the step (2), carrying out heat preservation reaction, cooling to room temperature, carrying out centrifugal separation on turbid liquid, washing the precipitate, then soaking the precipitate by using an organic solvent, and centrifugally collecting a precipitate product; and (4) drying the precipitation product, and collecting to obtain a black powder sample COF material. The COF material prepared by the invention has excellent electro-catalytic performance and stability, and has a good application prospect in metal-air batteries.

The invention provides periorbital secretion inhibition gel containing natural plant polyphenols and a preparation method thereof, and relates to the field of pet eye care, the gel is chelated with iron ions through EGCG to block a porphyrin oxidation pathway, cooperates with zinc ions to inhibit bacterial growth and plays a role in multiple mechanisms of targeted removal of bacterial biofilms through antibacterial peptide LL-37; in-vitro tests prove that the functional components in the gel have a remarkable synergistic effect, proliferation of staphylococcus aureus can be effectively inhibited, deposition of porphyrin is remarkably inhibited, and formation of tear stains is relieved; animal experiment results show that the gel has a remarkable tear stain removal effect and good periorbital safety, after two weeks of treatment, the periorbital tear stain area is reduced by 75.97% compared with that of a bear dog, the eye McDonald-Shiadduck stimulation score is also remarkably reduced, corneal fluorescein staining detection results of all tested animals are negative, and the gel has a good clinical application prospect. A mild and effective new thought is provided for inhibiting the periocular secretions of the pets.

The invention discloses an absorbable suture line containing fibroin and a preparation method of the absorbable suture line, and relates to the technical field of absorbable suture lines. The absorbable suture line containing the silk protein is prepared from the following raw materials in parts by weight: 35 to 50 parts of silk protein, 10 to 20 parts of polylactic acid, 15 to 25 parts of polyglycolide-lactide, 1 to 3 parts of antibacterial agent, 2 to 5 parts of modified toughening agent, 1 to 4 parts of nano mineral filler, 0.5 to 2 parts of cross-linking agent and 2 to 5 parts of plasticizer, the preparation method comprises the following steps: reacting protocatechuic acid with ethanolamine to generate an intermediate 1; and reacting the intermediate 1 with 5, 10, 15, 20-tetra (4-carboxyl phenyl) porphyrin to generate the antibacterial agent. The prepared absorbable suture line containing the silk protein has good mechanical performance, self-repairing performance and antibacterial performance.