48 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.

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 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.

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 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.

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 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 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 embodiment of the invention discloses outdoor CPE equipment and an intelligent temperature control method. According to one specific embodiment, the outdoor CPE equipment comprises a shell, a modified iron-doped nickel sulfide composite layer, a first metal cooling fin, a second metal cooling fin and a thermal interface material, a modified iron-doped nickel sulfide composite layer is attached to the inner wall of the shell, and a cooling fin shell is arranged outside the bottom of the shell. The first metal radiating fin is packaged in the shell and is mounted at the bottom of the shell; the second metal cooling fin is installed in the cooling fin shell on the outer side of the bottom of the shell, and the modified iron-doped nickel sulfide composite layer comprises an elastic base material and modified iron-doped nickel sulfide blocks. According to the embodiment, the thermal resistance can be changed according to the environment temperature when the outdoor CPE radiates heat outwards, and the comprehensive adaptive capacity of the outdoor CPE to the high-temperature environment and the low-temperature environment is improved.

The application discloses a kind of iron-doped gallium nitride crystal iron-doped concentration detection method, system and equipment.The method comprises: obtaining the image of iron-doped gallium nitride crystal, and correcting pre-processing to the image;Calculate the chromaticity-brightness coordinate of the image after correction pre-processing in CIExyY color space;Wherein, chromaticity-brightness coordinate represents the chromaticity information and brightness information of iron-doped gallium nitride crystal;According to the pre-set correlation model, the iron-doped concentration corresponding to chromaticity-brightness coordinate is calculated;Wherein, correlation model is the mapping model containing the mapping relationship between the representation chromaticity information and iron-doped concentration and the mapping relationship between the representation brightness information and iron-doped concentration.The present application can realize the rapid nondestructive testing of iron-doped concentration in iron-doped gallium nitride crystal, and it is simple and easy to operate, low in cost.

The invention relates to an indium phosphide crystal doped with zinc and iron, a single crystal wafer, a preparation method of the indium phosphide crystal and the single crystal wafer and a device. Specifically, the invention relates to an indium phosphide crystal which is a P-type indium phosphide crystal, and the indium phosphide crystal contains 0.5 ppm to 500 ppm of a zinc element and further contains 0.02 ppm to 50 ppm of an iron element. The invention also relates to a method for preparing the indium phosphide crystal doped with zinc and iron and a device prepared by using the indium phosphide crystal. The zinc and iron doped indium phosphide crystal obtained according to the invention has the advantages of low dislocation density, few defects and high yield.

The invention relates to a silicon-carbon composite negative electrode material and a preparation method thereof, and belongs to the technical field of silicon-carbon composite materials. The material has a three-stage structure of an inner core layer, a composite middle layer and an outer protection layer, wherein the inner core is 50-80nm iron-doped silicon particles with the volume ratio of FeSi2 phase being greater than or equal to 15%; the composite middle layer is composed of a 5-10 nm pitch pyrolytic carbon layer and a single-walled carbon nanotube conductive network, carbon nanotubes penetrate through the carbon layer to form three-dimensional conductive bridging with the linear density larger than or equal to 3 tubs / mu m < 2 >, and the Raman value of the three-dimensional conductive bridging is smaller than or equal to 0.18; and the outer layer is a nitrogen-doped carbon shell with the N-C bond proportion of more than 60%, and is fused and jointed with the middle layer.

The present application relates to a kind of preparation method and application of plate-shaped iron-doped nickel oxide material sensitive to hydrogen sulfide, belong to gas sensitive material technical field.The present application is added oxalic acid in aqueous solution containing nickel nitrate and ferric nitrate, is stirred uniformly by magnetic force, iron-doped nickel oxalate precursor is prepared using hydrothermal reaction in the stainless steel high-pressure reaction kettle lined with Teflon, and after centrifugal washing, vacuum drying, the plate-shaped iron-doped nickel oxide material is obtained by calcining the dried precursor material.The plate-shaped iron-doped nickel oxide material is coated on the surface of typical ceramic tube, and ceramic tube gas sensor is made, and the test of hydrogen sulfide sensitive performance is realized.The preparation method of the present application is simple and controllable, and the obtained material has good hydrogen sulfide sensitive performance, can realize the rapid sensitive continuous detection of hydrogen sulfide, one of the decomposition products of sulfur hexafluoride in industrial production process, improve the anti-poisoning ability to hydrogen sulfide, and has wide application prospect.

This invention relates to the field of photocatalysis technology, specifically to iron-doped defect-rich carbon nitride nanotube photocatalysts, their preparation methods, and applications. The invention first obtains a modified intermediate via a hydrothermal method, and then calcines it in a muffle furnace to obtain defect-rich carbon nitride nanotubes with a porous structure. By utilizing the porous structure and the active sites created by iron doping, the invention solves the problems of low visible light utilization, poor nitrogen adsorption and activation capabilities, and low nitrogen fixation synthesis efficiency of existing photocatalysts.

The invention discloses an iron-doped carbon dot nano-enzyme assisted ratio type electrochemical aptamer sensor, a preparation method and application, and belongs to the field of sensors. The method comprises the following steps: (1) preparing a molybdenum disulfide-gold nanoparticle-methylene blue composite material modified electrode; (2) preparing a MoS2 / Au / MB / cDNA modified electrode; (3) preparing the iron-doped carbon dot nano enzyme; (4) preparing the iron-doped carbon dots modified by the acetamiprid aptamer; and (5) preparing the MoS2 / Au / MB / cDNA (at) Apt / Fe-CDs modified electrode. The preparation method disclosed by the invention is low in cost, simple in experimental operation and easy in reaction condition control. The iron-doped carbon dot nano enzyme-assisted ratio-type electrochemical aptamer sensor prepared by the invention can be used as a working electrode for quantitative analysis and detection of acetamiprid, and has good stability, high sensitivity, high specificity and high accuracy in acetamiprid detection.

The application discloses a preparation method of iron-doped framework hollow molecular sieve material synthesized by ion exchange assisted hydrothermal synthesis and application thereof, and belongs to the technical field of molecular sieves. The preparation method of the iron-doped framework hollow molecular sieve material is as follows: a silicon sol, sodium metaaluminate, sodium hydroxide, water and a soluble iron source are mixed, stirring and aging are performed until complete hydrolysis, and a synthesis liquid is obtained; a quartz fiber carrier is immersed in the synthesis liquid, reaction is carried out at 60-150 DEG C for 12-48 hours, and after cooling, washing and drying are performed. The iron-doped framework hollow molecular sieve material has the effects of resisting metal high-temperature sintering, inhibiting metal grain growth and maintaining high metal dispersity, and the framework iron has a more stable crystal structure than traditional impregnation methods, which is beneficial to ensuring that the catalyst remains stable and efficient during the reaction process, can reduce the possibility of side reactions and the leaching rate of the active component of the catalyst, and thus has better catalytic performance and a longer service life.

The present invention discloses an apparatus for accelerating organic compound decomposition, based on photocatalyst comprising titanium dioxide (TiO 2) doped with copper (II) nitrate and / or zinc nitrate and / or aluminium nitrate. The disclosed Cu (II) -, Al (III) -and Zn (II) -doped TiO 2 materials exhibit enhanced visible-light absorption, improved charge separation, and stable reactive oxygen species (ROS) generation under neutral and broad pH environments. The Cu(II), Zn(II), and Al(III) dopants can promote efficient ROS formation for organic compound decomposition, without the severe electron-proton recombination caused by conventional iron (III) dopants. An installation application for air purification and ventilation is also provided, highlighting the Cu (II) -, Al (III) -and Zn (II) -doped TiO 2 photocatalysts in in a wide range of applications including but not limited to the mitigation of grease trap, sewage, toilet and garbage room odor.

The invention relates to an iron-doped modified titanium-based electrochemical lithium ion sieve, a preparation method thereof and application of the iron-doped modified titanium-based electrochemical lithium ion sieve in lithium ion battery recovery and lithium extraction, and belongs to the technical field of electrochemical lithium ion sieve materials. The titanium-based lithium ion sieve is modified through iron doping, so that the lithium extraction rate and the adsorption capacity of the material are remarkably improved. Meanwhile, the lithium ion sieve is prepared into an electrode structure, so that the problem that a traditional powdery lithium ion sieve is difficult to recycle in the recycling process is effectively solved. Besides, the method is combined with electrochemical driving of lithium ion intercalation and deintercalation processes, so that the dependence on acid leaching liquid is greatly reduced, the production cost is reduced, and the method has a good application prospect.

The invention provides a phase-locked quantum cascade laser array based on evanescent wave coupling and a preparation method, and relates to the technical field of infrared semiconductor photoelectric devices. The quantum cascade laser array comprises a back metal electrode, a substrate, a buffer layer, a coupling layer, a lower waveguide layer, a lower limiting layer, an active region layer, an upper limiting layer, an upper waveguide layer and an upper cover layer which are sequentially stacked from bottom to top, the surface of the upper cover layer is provided with a plurality of pairs of etching grooves extending downwards into the lower waveguide layer, and the etching grooves are filled with an iron-doped indium phosphide material. An electrode injection window is formed in the surface of the upper cover layer between each pair of etching grooves, and the area, except the electrode injection window, on the surface of the upper cover layer is covered with an insulating layer; the upper surface of the insulating layer and the interior of the electrode injection window are both covered with front metal electrodes.

Iron-doped mesoporous alumina@carbon core-shell structure catalyst, preparation method and application thereof, the core-shell structure with iron-doped mesoporous alumina as the inner core and carbon layer encapsulation outside, through in-situ sol-gel method, the atomic level or nanometer level uniform dispersion of iron species in the alumina framework is realized, F127 is used as the template agent to construct the mesoporous channel structure, sodium citrate is used as the dispersant, concentrated hydrochloric acid plays a dual catalytic function, not only speeds up the hydrolysis of aluminum isopropyl alcohol to form a uniform aluminum-based sol network, but also promotes the complexation reaction of PVP and potassium ferrocyanide, by using the multiple effects of PVP reducing agent, carbon precursor and core-shell structure directing agent, the in-situ reduction of iron and the assembly of carbon precursor are completed simultaneously in the sol formation process; after subsequent calcination, the Fe / OMA@C catalyst with stable structure and excellent catalytic performance is obtained, the catalyst is applied to the CO2 desorption of alcohol amine solution, and high catalytic activity and excellent cycle stability can be shown, and the CO2 capture and regeneration energy consumption is effectively reduced.