78 results about "Iron doped" patented technology

The invention provides an iron-doped copper nanocluster nano-enzyme, a preparation method thereof and application of the iron-doped copper nanocluster nano-enzyme to detection of penicillin sodium by a colorimetric method. According to the preparation method, PVP-K30 and metal chlorate are taken as initial raw materials, deionized water is taken as a solvent environment, and the iron-doped copper nanocluster nanoenzyme is prepared through oil bath heating synthesis and dialysis purification. When 3, 3 ', 5, 5'-tetramethyl benzidine-hydrogen peroxide reaction is catalyzed by the nano-enzyme, the nano-enzyme is found to have an excellent peroxidase simulation effect, and rapid colorimetric detection of penicillin sodium is realized. The nano-enzyme provides an important thought for the development of novel nano-enzymes, and has a potential application value for the detection of antibiotics in a complex matrix.

An iron-doped flexible supercapacitor electrode comprises a base body and electrode slurry, and the electrode slurry is bonded on the base body. The electrode slurry comprises 40-60 parts by weight of iron-doped graphite and 2-10 parts by weight of adhesive resin; the iron-doped graphite comprises ferric trichloride intercalated graphite with first-order intercalation and ferric trichloride intercalated graphite with second-order intercalation, and the particle size of the iron-doped graphite is 600-5000 meshes; and the electrode slurry forms a film on the substrate and then is treated by hydrogen peroxide. In the invention, ferric trichloride intercalated graphite is used as a main conductive filler, and eigenstate conductive macromolecules are used as a connecting agent; when hydrogen peroxide treatment is carried out, Fe < 3 + > on the graphite is used as a catalyst to catalyze decomposition of hydrogen peroxide, the decomposition of hydrogen peroxide generates water and O2, and the overflow of O2 enables the electrode slurry to form a porous structure; the graphite layer is stripped into wormlike graphite; therefore, the adsorption performance of the electrode slurry layer is improved.

The invention discloses a preparation method of an iron-doped cerium-based perovskite type high-selectivity Cu ion capture stabilizing agent and application of the stabilizing agent in heavy metal pollution remediation, and the stabilizing agent is prepared through a sol-gel method and comprises the steps that cerous nitrate and citric acid are dissolved in water, and the mixture is heated and stirred to be gel-shaped; standing the gel solution in a drying oven at a constant temperature to obtain a Fe-Ce-PVSK precursor; grinding the precursor into powder, putting the powder into a quartz boat, and calcining in an air atmosphere through a horizontal tube furnace to obtain a product; and finally, washing to be neutral to obtain the iron-doped cerium-based perovskite stabilizing agent. Due to the high oxygen vacancy concentration and rich active sites, the stabilizing agent has high selectivity and high adsorption capacity and has specific capturing capacity on Cu < 2 + >. The preparation method has mild reaction conditions. The stabilizing agent can effectively reduce the bio-availability of heavy metals in a polluted matrix, promote healthy growth of plants, and realize pollution restoration and ecological function recovery at the same time.

The invention discloses an iron-doped lithium niobate material as well as a preparation method and application thereof, and belongs to the technical field of photoelectric materials. The preparation method of the material comprises the following steps: (1) mixing and grinding 10-100 mg of an iron salt precursor, 200-300 mg of lithium niobate and 500 mg of molten salt to obtain mixture powder; (2) calcining the mixture powder for 0.5-5 hours at the temperature of 350-800 DEG C; and (3) cooling the calcined mixture powder in air, and washing to remove the molten salt to obtain the iron-doped lithium niobate material. The iron-doped lithium niobate material prepared by the preparation method has a relatively stable structure, the light absorption capability is remarkably enhanced, and the application of the iron-doped lithium niobate material in the optical field is facilitated.

The invention belongs to the technical field of hydrogen production by electrocatalytic decomposition of water, and provides an iron-doped nickel hydroxide composite iron-doped cerium oxide electrocatalyst and application thereof in electrolyzed water. The iron-doped nickel hydroxide composite iron-doped cerium oxide electrocatalyst comprises a nickel substrate, wherein a porous catalytic activity layer of three-dimensional flower-shaped spherical nanoparticles formed by stacking two-dimensional nanosheets is loaded on the surface of the nickel substrate. The catalytic active layer comprises an iron-doped hexagonal stacked nickel hydroxide structure, the catalytic active layer comprises an iron-doped cubic stacked cerium oxide structure, and no iron with a crystalline structure exists in the catalytic active layer. The iron-doped nickel hydroxide composite iron-doped cerium oxide electrocatalyst disclosed by the invention shows excellent oxygen evolution performance in an oxygen evolution reaction of electrocatalytic water decomposition.

The invention relates to the technical field of preparation of environmental functional materials, and discloses a directional synthesis method of magnetic porous iron-doped graphitized biochar, which is realized by the following steps: cooperatively inducing low-temperature graphitization by utilizing a biomass endogenous S < 2 > self-template and nano-diamond; performing double-complexing ultrasonic impregnation on the iron precursor to realize nanoscale dispersion; performing staged pyrolysis, pre-carbonizing in an inert atmosphere to construct a carbon skeleton, and synchronously completing iron reduction and graphitization in a reducing atmosphere; performing mixed pickling to synchronously remove the template and construct a passivation layer; and finally, carrying out magnetic separation to obtain the high-porosity and uniformly iron-doped magnetic graphitized charcoal. A graphitized porous structure is realized through cooperation of a low-temperature self-template and nano-diamond, iron agglomeration is inhibited through a double-complexing ultrasonic technology, a protective layer and active sites are synchronously constructed through mixed pickling and passivation, and three technical barriers of high-temperature collapse, iron particle inactivation and short cycle life of a traditional process are broken through.

The invention provides a method for processing nickel-iron alloy powder, comprising the following steps: S1, providing nickel-iron alloy powder; the nickel-iron alloy powder contains nickel, iron and chromium elements; S2, performing acid leaching on the nickel-iron alloy powder to obtain leaching residue and leaching liquid; cooling and crystallizing the leaching liquid to obtain solid crystals and a post-crystallization liquid; S3, performing chromium precipitation treatment on the post-crystallization liquid to obtain chromium precipitation residue and a post-impurity removal liquid; S4, performing nickel-iron separation on the post-impurity removal liquid to obtain a nickel precipitate and an iron separation liquid. The invention obtains a nickel precipitate and an iron separation liquid by processing the nickel-iron alloy powder, thereby reducing the iron doping in the nickel precipitate; the invention also effectively removes chromium before performing nickel-iron separation, thereby ensuring the acquisition of high-quality nickel products.

The invention discloses an iron-doped nickel-cobalt metaphosphate electrode material based on an oxide intermediate and a preparation method and application thereof, and relates to the technical field of supercapacitors, the preparation method comprises the following steps: preparing an electrolyte containing a nickel salt, a cobalt salt and an iron salt, and carrying out electro-deposition on a conductive substrate to obtain the iron-doped nickel-cobalt metaphosphate electrode material. A nickel-cobalt-iron layered double hydroxide precursor is obtained; sintering the nickel-cobalt-iron layered double hydroxide precursor to prepare an intermediate; and phosphating the intermediate by taking sodium hypophosphite as a phosphorus source to finish the preparation. The invention also discloses the iron-doped nickel-cobalt metaphosphate electrode material based on the oxide intermediate prepared by the method and an application of the iron-doped nickel-cobalt metaphosphate electrode material in preparation of a supercapacitor. Through a unique pre-oxidation process and substrate optimization, the electrochemical performance of the electrode material is remarkably improved, and the problems that an existing metaphosphate material is poor in conductivity and insufficient in active site are solved.

The invention discloses a method, a system and equipment for detecting the iron doping concentration in an iron-doped gallium nitride crystal. The method comprises the following steps: acquiring an image of the iron-doped gallium nitride crystal, and carrying out correction preprocessing on the image; calculating a chromaticity-brightness coordinate of the image after correction preprocessing in a CIExyY color space; wherein the chromaticity-brightness coordinate represents chromaticity information and brightness information of the iron-doped gallium nitride crystal; calculating an iron doping concentration corresponding to the chromaticity-brightness coordinate according to a preset correlation model; wherein the correlation model is a mapping model which comprises a mapping relation between the characterization chromaticity information and the iron doping concentration and a mapping relation between the characterization brightness information and the iron doping concentration. According to the method, rapid nondestructive detection of the iron doping concentration in the iron-doped gallium nitride crystal can be realized, the operation is simple and convenient, and the cost is low.

The disclosure relates to iron-doped potassium titanate nanotube catalysts, and methods of making and using such catalysts. The catalysts can be used in the hydrogenation of carbon dioxide (CO2) for the production of light olefins.

This invention discloses iron-doped copper hierarchical nanosheets, their preparation, and their application in the electro-oxidation of formaldehyde for hydrogen evolution, relating to the field of hydrogen energy technology. The preparation method of the iron-doped copper hierarchical nanosheets includes the following steps: using a copper mesh as a substrate, in-situ growth of Cu(OH)₂ nanowire arrays is performed by chemical oxidation; the Cu(OH)₂ nanowires undergo ion exchange in an aqueous solution of ferric nitrate to form a hierarchical Fe-Cu(OH)₂ structure. x Nanosheets; Fe-Cu(OH)₂ calcined at high temperature in air atmosphere. x Nanosheets are transformed into Fe-CuO nanosheets; the Fe-CuO nanosheets are then electrochemically reduced to Fe-Cu nanosheets, resulting in an Fe-Cu nanosheet array grown on a copper mesh. The Fe-Cu nanosheet array electrode in this invention exhibits superior formaldehyde electro-oxidation hydrogen evolution performance and significantly broadens the potential window for the electro-oxidation of pure Cu metal formaldehyde, making it suitable for low-energy-consumption electrochemical hydrogen production from formaldehyde.

The invention provides a self-supporting Fe-Ni3S2-coated NiCoLDH core-shell electrocatalyst, a preparation method thereof and a hydrogen production method, and relates to the field of catalysts. The self-supporting Fe-Ni3S2-coated NiCoLDH core-shell electrocatalyst comprises a conductive nickel substrate and a core-shell electrocatalyst arranged on the surface of the conductive nickel substrate, a core in the core-shell electrocatalyst comprises iron-doped nickel sulfide nanosheets, and a shell comprises nickel-cobalt layered double hydroxides. The core and the shell are tightly connected through strong chemical bonding, so that the material keeps structural integrity under a harsh electro-catalysis working condition, and active components are effectively prevented from falling off; the iron-doped nickel sulfide nanosheet with excellent conductivity is used as a natural framework, an efficient electron transmission path is provided for an external nickel-cobalt layered double-metal hydroxide shell layer, the internal resistance of the electrode is remarkably reduced, and reaction kinetics is accelerated.

The invention discloses an iron-molybdenum double-site synergistically enhanced electro-Fenton system and a method for synchronously removing heavy metal and organic pollutants in water through the iron-molybdenum double-site synergistically enhanced electro-Fenton system. The electro-Fenton system comprises a metal anode and a cathode, and the cathode comprises a graphite oxide felt loaded with iron-doped molybdenum disulfide microspheres; the iron-doped molybdenum disulfide microspheres comprise a nanosheet structure formed by iron, molybdenum and sulfur, and the content of Fe in the iron-doped molybdenum disulfide microspheres is 0.5-4 wt%. According to the preparation method, an electro-catalysis system is constructed by three-dimensional iron-doped molybdenum disulfide graded microspheres (Fe-MoS2HS) and graphite oxide felt (GF), H2O2 is synergistically activated by utilizing Fe-Mo double sites, a composite oxide species of. OH and < 1 > O2 is formed, valence state circulation of Fe < 3 + > / Fe < 2 + > and Mo < 6 + > / Mo < 4 + > is combined, the bottlenecks of catalytic efficiency and stability in the prior art are broken through, and the preparation method has the advantages that the preparation method is simple and easy to implement, and the application prospect is wide. The efficient and synchronous removal of heavy metals and organic matters is realized (the removal rate is greater than or equal to 95%), the energy consumption is reduced by more than 40% compared with that of the traditional electro-Fenton, and the method has remarkable technical advancement and practicability.

The application discloses iron-doped biochar loaded CuS, a preparation method thereof and application of the iron-doped biochar loaded CuS in removal of orange G by activated peroxodisulfate. The iron-doped biochar loaded CuS comprises porous biochar, and Fe2O3 particles, CuS and FeS loaded on the surface and in the pores of the porous biochar. In the application, transition metals are used to improve the surface properties of BC, introduce new active sites, obtain modified biochar, and then load CuS on the surface of the modified biochar, so that the PS catalyst with multiple active sites can be obtained, and the problems of low catalytic performance of original BC and agglomeration and deactivation of CuS can be solved.

The application aims to provide an organic cation-mediated iron-doped molybdenum disulfide nanosheet self-assembly method and application thereof, and belongs to the technical field of analysis and detection. The method uses polydiallyldimethylammonium chloride as intercalation ions, polyvinylpyrrolidone as stabilizer, and both of them cooperatively control the self-assembly of iron-doped molybdenum disulfide nanosheet. First, the iron-doped molybdenum disulfide nanosheet is prepared by using a hydrothermal synthesis method; then, the PDDA is used as intercalation agent, the PVP is used as stabilizer, and the homogeneous dispersed Fe-MoS2 nanosheet is obtained. Finally, the three-phase liquid-liquid self-assembly method is combined to realize the large-area and single-layer self-assembly of the Fe-MoS2 nanosheet. The method provides a new way for the macroscopic controllable assembly of two-dimensional materials, and combined with the noble metal SERS substrate, the rapid identification and detection of drug molecules can be realized.

This invention discloses an iron-doped cerium-based thermally conductive and microwave-absorbing nanomaterial, its preparation method, and its application, belonging to the field of thermal conductivity-microwave absorption technology. This invention utilizes a one-step hydrothermal method to prepare, for the first time, polycrystalline iron-doped cerium-based composite nanorods / wires, which are Fe... 0 ,Fe 2+ ,Fe 3+ A novel co-doped Ce(OH)3 / CeO2 core-shell composite exhibits a novel structure and formation mechanism. The size and aspect ratio of iron-doped cerium-based composite polycrystalline nanorods / wires can be further controlled by altering the molar ratios of strong base to cerium salt, iron salt to cerium salt, reaction temperature, and reaction time. The resulting material possesses excellent thermal conductivity and microwave absorption properties. The preparation method disclosed in this invention is simple to operate and produces novel product morphologies, overcoming the limitations of previous preparation methods, such as harsh reaction conditions, difficulty in controlling product morphology, and poor experimental repeatability. It has good potential for industrial application.

A tantalum capacitor according to an embodiment of the present disclosure includes: a tantalum body; a tantalum wire connected to the tantalum body; a conductive polymer layer disposed on the tantalum body; and a first reinforcement layer disposed on the conductive polymer layer and including iron (Fe) doped carbon nanotubes.

The application discloses a preparation and application of an iron-doped titanium suboxide electrode. The iron-doped titanium suboxide electrode is prepared by mechanically treating an iron compound and titanium suboxide, is used as an anode, and is used for synthesizing a disinfectant with natural seawater as an electrolyte and being coupled with photovoltaic technology, so that a solar energy driven electrolysis device is successfully constructed, the disinfectant with active components of hypochlorous acid is synthesized, and pathogenic bacteria in ballast water are killed. The electrode is composed of non-noble metal elements, and the price is much lower than that of a commercial size stable anode composed of noble metals ruthenium and iridium, and the electrode shows a reaction activity which is significantly higher than that of the commercial size stable anode, and the problem that high-abundance chlorine ions in seawater are difficult to be selectively oxidized to hypochlorous acid is solved. The electrode is stable in chemical properties, friendly to the environment, and cannot cause secondary pollution, and can be driven by solar energy to electrochemically synthesize a disinfectant without depending on power resources in ocean navigation, so that disinfection and sterilization of ship ballast water are realized, and the electrode is very worth promoting.

The present application relates to the technical field of catalyst, in particular to a kind of iron-doped manganese oxide catalyst and its preparation method and application.The present application is modified by sulfuric acid, manganese salt compound is dissolved in sulfuric acid aqueous solution, ferrous sulfate and potassium permanganate are added, stirring treatment is carried out, the product after treatment is separated, after washing multiple times, Fe / MnO2 Solid is obtained.The method enhances Fe-Mn bimetallic synergistic effect by sulfuric acid medium, significantly increases the number of active oxygen species on the surface of catalyst, so as to realize the efficient catalytic oxidation of toluene at low temperature.The preparation method of the present application is simple, low in energy consumption and cost saving.Under the condition of toluene concentration 2000mg / m 3 , space velocity 60000mL / (g·h), the catalyst prepared can realize toluene conversion rate ≥90% at 220℃~260℃, and has good industrial application prospect.

The application provides a multifunctional nano drug delivery system based on iron-doped MOF and a preparation method and application thereof. The system comprises: an Fe / MOF core loaded with a chemotherapeutic drug and an HO-1 inhibitor; a PDA coating layer coated on the surface of the Fe / MOF core for providing near-infrared light heat conversion capability and surface modification interface; and E3 aptamer covalently coupled on the PDA coating layer, constituting a synergistic nano platform with active targeting, pH / NIR dual-responsive drug release, chemical kinetics therapy, ferroptosis sensitization, photothermal therapy and immune regulation functions. The nano system can realize efficient accumulation at the tumor site through active targeting mediated by E3 aptamer, and controllably release drugs under an acidic microenvironment or near-infrared light. A new strategy for multi-mechanism synergistic treatment is provided to overcome the multiple drug resistance and immunosuppression of mCRPC, and has important clinical application prospects.

The invention relates to the technical field of medicines, in particular to sound-induced piezoelectric hydrogel as well as a preparation method and application thereof. The method comprises the following steps: 1) synthesizing a nano-plate by adopting a hydrothermal method; or in the process of synthesizing the nano-plate by the hydrothermal method, adding an iron source into the reaction liquid, and carrying out hydrothermal reaction to obtain the iron-doped nano-plate, (2) carrying out lamellar stripping on the nano-plate to obtain a nano-sheet; and 3) preparing gelatin gel, and then mixing the gelatin gel with the nanosheets obtained in the step 2) to obtain the sound-induced piezoelectric hydrogel. The piezoelectric-like material is innovatively applied to treatment of infected wounds, the piezoelectric-like material serves as a novel piezoelectric material, the acoustic heating effect can be rapidly generated under low-power ultrasonic induction so as to treat the biological membrane infected wounds, and in addition, the temperature rise can promote wound healing by increasing the blood flow volume, promoting cell migration and the like.

The invention relates to the technical field of hydrogen production through water electrolysis, and provides a nickel / iron-doped carbon nano tube (CNTs) catalytic material and electro-catalysis application of the material by utilizing a simple, convenient and industrially compatible combustion method strategy. According to the innovative technology, the cheap carbon nano tube can be quickly and simply converted into the high-activity and high-stability oxygen evolution catalyst. The catalytic material not only has excellent oxygen evolution reaction (OER), but also is simple in preparation process and suitable for large-scale industrial preparation and application.

The invention discloses a titanium-zirconium-niobium-based alloy with an antibacterial function as well as a preparation method and application of the titanium-zirconium-niobium-based alloy. The titanium-zirconium-niobium-based alloy comprises the following chemical components in percentage by atom: 33.5-39.5% of zirconium, 33.5-39.5% of niobium and the balance of titanium. 15 to 25% of niobium; 1-2% of iron; the doping element is a mixture of copper and gallium, and the balance is titanium and inevitable impurities. According to the invention, a middle-entropy alloy system taking Ti-Zr-Nb as a core is taken as a design basis, and beta-phase stability and an antibacterial function are optimized by accurately regulating and controlling the chemical proportion of Nb and Fe and synergistically adding Cu / Ga. In addition, the alloy provided by the invention is an alloy material with a single centered cubic (BCC) beta phase structure, and good matching of low elastic modulus (less than or equal to 60 GPa) and high yield strength (more than or equal to 650 MPa) is realized.

The invention discloses a simple and low-cost method for preparing nitrogen (iron)-doped three-dimensional porous graphene, which comprises the following steps: by taking typha angustifolia leaves as a carbon precursor and ferric ammonium citrate as a nitrogen source and a graphitization catalyst, carrying out microwave heating pore-forming, carbonization and graphitization to obtain the nitrogen (iron)-doped three-dimensional porous graphene. The nitrogen content, the iron content, the specific surface area and the graphite degree of the material can be controlled according to the use amount of the ammonium ferric citrate and the microwave time. The material is metal-free nitrogen-doped three-dimensional porous graphene after iron removal.

The invention discloses a 3D printing zero-valent iron doped electrode for removing copper ions in wastewater and a preparation method and application thereof.The method comprises the steps that zero-valent iron powder, nickel oxide powder, carbon nanotubes and soluble organic carbon are mixed in proportion, pure water is added for a reaction, positive and negative rotation alternate ball milling, drying and screening are conducted, and mixed spherical zero-valent iron powder is obtained; and performing 3D printing according to the 3D structure model by using metal laser 3D printing equipment, and cutting and cleaning after printing to obtain the 3D printing zero-valent iron doped electrode. The prepared 3D printing zero-valent iron-doped electrode is small in size, high in operability and easy to recycle, the added soluble organic carbon and the added carbon nanotubes enhance the oxidation resistance of iron and nickel correspondingly, more contact points with copper ions are achieved, the adsorption capacity of the electrode on the copper ions is higher, and the service life of the electrode is prolonged. The 3D printed three-dimensional structure enhances the water mass transfer capacity of the electrode and increases the specific surface area of the electrode, and wastewater containing 3g / L of copper ions can be removed in only two hours.

This invention discloses a near-infrared induced explosive ferroptosis nanocomposite, its preparation method, and its applications. The nanocomposite comprises nanoparticles loaded with a ferroptosis inducer and iron-doped dopamine, and a targeting ligand modified on the surface of the nanoparticles. The nanoparticles use manganese dioxide with a hollow mesoporous structure as a carrier. The ferroptosis inducer is loaded within the hollow mesopores, and the iron-doped dopamine is assembled on the surface of the carrier. Through specific nanocomposite materials and a unique structure, the invention achieves dual regulation of effective degradation of endogenous GSH and specific enhancement of ROS levels in tumor cells, and combines photothermal effects to increase ferroptosis to inhibit tumor growth.

The application relates to the technical field of electrocatalytic materials, in particular to a preparation method of an iron-doped trimanganese tetraoxide electrocatalyst and application of the iron-doped trimanganese tetraoxide electrocatalyst in an alkaline oxygen evolution reaction. The preparation method of the iron-doped trimanganese tetraoxide electrocatalyst comprises the following steps: (1) ultrasonic cleaning of a conductive substrate in acetone and ethanol solutions for 30 minutes respectively, and then drying the conductive substrate by blowing nitrogen; (2) preparing a precursor solution containing Fe3 + and Mn2 + , and then electrochemically depositing the cleaned conductive substrate in the precursor solution to obtain a precursor of a FeMn layered double hydroxide layer deposited on the surface of the substrate, namely a FeMnLDH precursor; and (3) annealing the deposited sample in air, and then cooling the sample to room temperature to obtain a spinel-structured FeMn3O4@1.

The invention discloses an NCFCP and NiCo LDH water electrolysis catalyst as well as a preparation method and application thereof, the NCFCP and NiCo LDH water electrolysis catalyst comprises a two-dimensional NiCo LDH sheet layer serving as a carrier and NCFCP nanoparticles loaded on the two-dimensional NiCo LDH sheet layer, and the NCFCP nanoparticles are NiCoP nanoparticles modified by iron-doped carboxylate. According to the preparation method, foamed nickel with good conductivity is selected as a substrate, two-dimensional NiCo LDH is prepared by adopting a coprecipitation method to serve as a protective layer, NiCoP and NiCo LDH lamellar intermediates are prepared by adopting an incomplete phosphorization method, self-supporting type two-dimensional NiCo LDH coated and ferric acetate modified NiCoP is obtained by adopting ferric acetate modification, a two-dimensional lamellar layer provides large specific surface area and sites for growth of NiCoP nano particles, and the self-supporting type two-dimensional NiCo LDH coated and ferric acetate modified NiCoP has the advantages that the self-supporting type two-dimensional NiCo LDH coated and ferric acetate modified NiCoP can be used for preparing the NiCoP nano particles; the doping of Fe optimizes the electronic structure of NiCoP so as to provide continuous transmission of electrons in the HER and OER processes, the carboxylic acid group accelerates the deprotonation process of OER, NiCo LDH prevents NiCoP from being oxidized, the stability of NiCoP is enhanced, and the water electrolysis performance of NCFCP-NiCo LDH is synergistically promoted. And high activity, high current density and high stability are shown on both OER and HER.

The invention discloses a nano-composite for near-infrared induced explosive ferroptosis and a preparation method and application thereof.The nano-composite is prepared from nano-particles loaded with a ferroptosis inducer and iron-doped dopamine and targeting ligands modified on the surfaces of the nano-particles, the nano-particles take manganese dioxide of a hollow mesoporous structure as a carrier, the ferroptosis inducer is loaded in the hollow mesopores, and the iron-doped dopamine is assembled on the surface of the carrier. Dual regulation and control of effective degradation of endogenous GSH and specific improvement of ROS level in tumor cells are realized through a specific nano composite material and a unique structure, and ferroptosis is increased in combination with a photothermal effect so as to inhibit tumor growth.

The application discloses encapsulated copper oxide iron framework doped MFI molecular sieves, and a preparation method and application thereof. The iron source and copper complex are simultaneously added into a crystallization liquid, and are crystallized in a high-temperature hydrothermal crystallization kettle to obtain the encapsulated copper oxide iron framework doped MFI molecular sieves. In the encapsulated copper oxide iron framework doped MFI molecular sieves, the iron is doped into an MFI framework to form framework coordinated iron, and the copper is encapsulated in double ten-membered ring channels in the form of copper oxide. The encapsulated copper oxide iron framework doped MFI molecular sieves are used as catalysts to catalytically degrade tetracycline. At a reaction temperature of 50 DEG C, the tetracycline degradation rate is more than 99.0% after 20 minutes of reaction, and the catalytic reaction performance does not obviously decrease after five cycles of reaction, and the cycle stability is excellent.