218 results about "Cobalt ions" patented technology

The invention belongs to the technical field of electrocatalyst material preparation, and discloses a long-range disordered localized CoOOH ultrathin nanosheet electrocatalyst as well as a preparation method and application thereof, fluorine-doped cobalt selenide nanobelts prepared by a low-temperature annealing method are used as a base material, and the CoOOH ultrathin nanosheet electrocatalyst is prepared by in-situ reconstruction under an alkaline electrolyzed water anode oxygen evolution reaction condition. In the preparation process of the CoOOH ultrathin nanosheet provided by the invention, lattice cobalt is stabilized in the water electrolysis anode reconstruction process through fluorine ions with strong bonding action with cobalt ions, so that the long-range disordered structure of amorphous CoOOH generated after reconstruction is limited by localization, and the alkaline water electrolysis anode reaction performance is improved. The catalyst has activity and durability obviously superior to those of a commercial ruthenium oxide catalyst in industrial application of anion exchange membrane water electrolysis hydrogen production.

To provide a positive electrode active material for a lithium ion secondary battery, having high capacity and being excellent in charging and discharging cycle characteristic.SOLUTION: A positive electrode active material contains lithium, cobalt, nickel, aluminum, and oxygen. The spin density due to any one or more of divalent nickel ions, trivalent nickel ions, divalent cobalt ions, and tetravalent cobalt ions is in a predetermined range. The positive electrode active material further contains magnesium. The suitable magnesium concentration is expressed by the concentration relative to cobalt. The positive electrode active material preferably contains fluorine additionally.SELECTED DRAWING: Figure 1

The invention discloses a Cb Ago-based TdT detection reagent and a Cb Ago-based TdT detection method. The TdT detection reagent comprises a TdT extension reaction system and a TdT detection system, wherein the TdT extension reaction system comprises a TdT reaction buffer solution, deoxythymidine triphosphate, cobalt ions and an extension reaction detection probe; the Cb Ago system comprises Cb Ago, a Cb Ago buffer solution and a fluorescence report probe. The extension reaction detection probe disclosed by the invention can extend under the action of TdT, and then is in specific complementary pairing with the fluorescent reporter probe to activate Cb Ago to cut the fluorescent reporter probe, so that TdT detection is realized. The high specificity of the TdT extension reaction and the signal amplification capacity of Cb Ago are combined, and the method has the advantages of being easy and convenient to operate, high in sensitivity, low in cost, suitable for on-site detection and the like and is expected to become a powerful tool for detecting TdT.

The invention belongs to the technical field of catalytic materials and hydrocarbon reforming, and particularly relates to a high-entropy catalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing a metal salt solution containing lanthanum, chromium, copper, zinc, manganese, nickel, iron and cobalt ions with a chelating agent and a dispersing agent for reaction, carrying out ultrasonic cavitation treatment to obtain sol, adjusting the pH value, gelatinizing under an oil bath heating condition to obtain a colloidal precursor, drying, and calcining in an air atmosphere to obtain a perovskite type high-entropy oxide precursor; and then treating in a reducing atmosphere to obtain the FeZnCuNiCo perovskite type high-entropy alloy catalyst which contains metal components of La, Cr, Ni, Mn, Fe, Zn, Cu and Co and takes a multi-metal alloy active center of Fe-Zn-Cu-Ni-Co as a main component. The high-entropy catalyst can meet the harsh requirements of high temperature, strong carbon deposition driving force and long-period operation in a propane dry reforming reaction, and is suitable for industrial application scenarios of continuous production of high-temperature synthesis gas.

The invention discloses a method for promoting a cobalt sulfide loaded carbon composite catalyst to activate PMS to degrade pollutants by using bicarbonate ions. According to the method, bicarbonate radical ions are added into a system for degrading organic pollutants by activating the PMS with the cobalt sulfide loaded carbon composite catalyst, so that the efficiency of removing phenol by activating the PMS with the cobalt sulfide loaded carbon composite catalyst is greatly improved, and cobalt ion leaching is reduced due to addition of the bicarbonate radical ions; the cobalt sulfide loaded carbon composite catalyst has a wide application prospect in the field of advanced oxidation treatment of organic wastewater.

The application discloses a preparation method of graphene aerogel and application thereof, and the graphene aerogel is prepared from a three-dimensional network of graphene oxide as a continuous matrix, hydrophilic polyimide fibers as a reinforcing framework, and metal-organic coordination bonds as functional nodes by coordinating cobalt ions with ethylenediamine tetramethylene phosphonic acid, and is prepared through a hydrothermal reaction, freeze drying and high-temperature annealing; the preparation method is simple, the process is easy to control, the electromagnetic shielding performance of the prepared graphene aerogel reaches 48 dB, and the graphene aerogel has good mechanical stability in the range of-75 to 150 DEG C; under a pressure of 1 kg, the compression time and recovery time of the graphene aerogel are 30 ms and 27 ms respectively, and the graphene aerogel meets the commercial standards of sensing materials and shielding materials.

The preparation method comprises the following steps: mixing cobalt acetate, a modified ligand, a modified additive and DMF (Dimethyl Formamide), carrying out ultrasonic treatment, adding deionized water and a modified filler, carrying out ultrasonic treatment, carrying out heating reaction, carrying out centrifugation to remove a supernatant, and carrying out drying treatment to prepare the rapid-charge high-capacity artificial graphite negative electrode material, when the cobalt acetate, the modified ligand, the modified additive and the modified filler are subjected to blending reaction, carboxyl on the modified ligand and carboxyl on the modified additive can form coordinate bonds with cobalt ions of the cobalt acetate, then a cobalt metal organic framework is formed on the surface of the modified filler, and a fluorine element in the modified ligand can react with lithium to form lithium fluoride; electron penetration is effectively blocked, and side reactions are reduced; the lithium ion diffusion energy barrier is reduced, rapid charging and discharging are achieved, pyridine groups on the surface of the modified filler can provide lone pair electrons and serve as binding sites of lithium ions, pseudocapacitance is formed, and then the capacity is increased.

The invention relates to the technical field of fuel cell new materials and new energy, in particular to an A-site high-entropy perovskite cathode material and a preparation method thereof. According to the technical scheme, the material comprises the following raw materials: Pr (NO3) 3.6 H2O, La (NO3) 3.6 H2O, Co (NO3) 2.6 H2O, CaCO3, BaCO3, SrCO3 and citric acid. The molar ratio of the praseodymium ions to the lanthanum ions to the cobalt ions to the calcium ions to the barium ions to the strontium ions to the citric acid is 1: (1-2). According to the invention, the A site of the perovskite material is doped with a plurality of elements, a rapid quenching preparation process is combined, the oxygen vacancy concentration and the proton conduction path can be optimized, the ORR activity and the conductivity can be improved, and excellent electrochemical performance and thermal stability can be shown through the synergistic effect of the plurality of elements and structural regulation and control, so that the performance of the cell can be improved.

The invention discloses a cobalt-based catalytic material for efficiently activating persulfate to degrade antibiotics and a preparation method of the cobalt-based catalytic material. The catalytic material is prepared by taking an H-Beta zeolite molecular sieve as a carrier, loading cobalt ions on the molecular sieve through an impregnation method and then carrying out high-temperature roasting treatment. The preparation method comprises the following steps: preparing a cobalt acetate tetrahydrate solution, adding an H-Beta zeolite molecular sieve into the solution to carry out ion exchange, and then carrying out drying and high-temperature roasting. The prepared catalytic material has highly dispersed cobalt active sites and excellent structural stability and catalytic activity. Compared with the prior art, the catalyst provided by the invention has the advantages of simple preparation process, lower cost, high catalytic efficiency, good stability, low cobalt ion dissolution rate, easiness in recovery and reuse and the like, and has a good practical application prospect.

The application discloses a preparation method of a cobalt-based biochar composite material and application of the cobalt-based biochar composite material in persulfate oxidation, and comprises the following operation steps: a proper amount of sodium alginate is weighed, calcined, activated and dried to obtain a derived original biochar SA; after the SA is used as an adsorbent to adsorb cobalt ions, drying is performed to obtain a cobalt-containing biochar CoSA; the CoSA is uniformly ground with urea, pyrolysis is performed, washing, filtering and drying are performed, and vacuum drying is performed to obtain a cobalt-based biochar composite material CoNBC based on sodium alginate; and the activation method is that the SA is mixed with potassium hydroxide, ground in a jade mortar for 5-30 min, and then activated in ultrapure water for 1-8 h.The raw material used in the application is environment-friendly, the preparation process is simple, the cobalt-based biochar composite material obtained has excellent catalytic capacity for persulfate, can effectively control the precipitation of transition metals, reduces pollution, and greatly improves the utilization rate of metal elements.

The invention belongs to the technical field of electrocatalytic materials, and discloses a CeO2 / NiCo2O4 heterojunction oxygen evolution reaction electrocatalyst and a preparation method thereof. According to the electrocatalyst, a composite protection layer composed of nitrogen-doped carbon quantum dots and CeO2 is constructed on the surface of a NiCo2O4 nanosheet array, cobalt ions are captured and dissolved out through pyridine nitrogen, reintegration is promoted through CeO2 oxygen vacancy, and interface dynamic self-repairing is achieved. And the nitrogen-doped carbon quantum dots are embedded into the CeO2 layer and are in direct contact with NiCo2O4 to synergistically inhibit cobalt loss and maintain structural integrity. By constructing the CeO2 / nitrogen-doped carbon quantum dot composite interface layer with dynamic ion capture and self-repairing capabilities, the problems of structure instability and performance degradation caused by cobalt ion dissolution of the NiCo2O4-based oxygen evolution reaction electrocatalyst under the working condition of strong oxidizing property are successfully solved; the method has important application value and industrialization prospect in the technical field of green hydrogen energy electrolyzed water.

The invention belongs to the technical field of drug-loaded release, and particularly relates to a Co-MOFs modified carboxymethylated filter paper composite material as well as a preparation method and application thereof. The preparation method comprises the following steps: performing carboxymethylation treatment on filter paper to obtain carboxymethylated filter paper; soaking the carboxymethylated filter paper in a cobalt ion solution; and then adding an organic ligand solution to obtain the Co-MOFs modified carboxymethylated filter paper composite material. The preparation method has the advantages of mild reaction conditions and simplicity in operation; the Co-MOFs modified drug-loaded paper has good antibacterial performance and drug slow release performance, can be used as a medical dressing for promoting wound healing, and has important application value.

The invention relates to the technical field of nano-materials, and discloses a heterogeneous diatomic nano-enzyme as well as a preparation method and application thereof. The invention provides a space confinement regulation and control strategy which is used for constructing a heterodiatomic catalytic center on a nitrogen-doped carbon skeleton and preparing nano-enzyme with structural stability and synergistic catalytic performance. According to the method, a confinement framework formed by self-assembly of first metal ions such as cobalt ions and second metal ions such as zinc ions and organic ligands is used as a template, third metal ions such as iron ions are introduced, and then carbonization heat treatment is performed in a protective gas atmosphere, so that bimetal sites with stable bridging configuration are formed in situ. The obtained nano-enzyme has the catalytic activity of various antioxidant enzymes, including catalase and remarkable superoxide dismutase activity, and has more excellent free radical scavenging capacity compared with a single-metal or non-bridging system.

The application relates to a method for removing impurity cobalt ions in zinc sulfate electrolyte, and belongs to the technical field of zinc electrodeposition and cobalt recovery. 2+ and Sb 3+ are added into the zinc sulfate electrolyte containing cobalt ions; a reducing agent zinc powder is added into the zinc sulfate electrolyte, and a replacement reaction is carried out for 50-70 min under ultrasonic strengthening conditions, so that purified slag and zinc sulfate purified liquid are obtained through solid-liquid separation. 2+ and Sb 3+ are used as activators, Sb-Cu-Co alloy is formed with Co 2+ in the zinc sulfate electrolyte, so that the hydrogen evolution is inhibited, in addition, the Sb-Cu-Co alloy can effectively reduce the Co precipitation potential, the thermodynamics of the reaction between the reducing agent zinc powder and Co 2+ is optimized, the ultrasonic wave strengthens the reaction, the reaction kinetics is improved, the production of zinc powder wrapping and agglomeration is reduced, the particle size of the purified slag is reduced, and the utilization rate of the reducing agent zinc powder is improved.

The application belongs to the technical field of extraction and specifically relates to a method for extracting and separating nickel, cobalt, tungsten, molybdenum and vanadium, which comprises the following steps: extracting and separating a to-be-processed aqueous phase containing nickel, cobalt, tungsten, molybdenum and vanadium ions and an extraction organic phase to obtain a loaded organic phase rich in tungsten, molybdenum and vanadium ions and a raffinate aqueous phase rich in nickel and cobalt ions; and the extraction organic phase is an acidified organic phase containing an extractant of formula 1, an extractant of formula 2, an extractant of formula 3 and a diluent. Based on the process, the common extraction of tungsten, molybdenum and vanadium ions can be realized, and in addition, the high-selectivity extraction and separation of tungsten, molybdenum, vanadium, nickel and cobalt can also be realized.

A method for producing mixed metal salts containing manganese ions and at least one of cobalt ions and nickel ions, the method including: an Al removal step of subjecting an acidic solution containing at least manganese ions and aluminum ions, and at least one of cobalt ions and nickel ions, to removal of the aluminum ions by extracting the aluminum ions into a solvent, the acidic solution being obtained by subjecting battery powder of lithium ion batteries to a leaching step; and a precipitation step of neutralizing an extracted residual liquid obtained in the Al removal step under conditions where a pH is less than 10.0, to precipitate mixed metal salts comprising a metal salt of manganese and a metal salt of at least one of cobalt and nickel.

The present invention concerns a process for producing nickel and / or cobalt comprising the steps of: a) providing an aqueous metal sulfate feed solution comprising nickel and / or cobalt ions and impurities; b) separating a first part of impurities from the metal sulfate feed solution to obtain a raffinate; c) optionally subjecting the raffinate to an ion exchange treatment to remove a second part of impurities; and d) subjecting at least a portion of the optionally ion exchanged raffinate as electrolyte to electrowinning to produce nickel and / or cobalt.

This invention discloses a method for activating PMS (persulfate monosulfate) catalysts to degrade organic pollutants using A-site lanthanum-doped lithium cobalt oxide, belonging to the field of environmental catalysis and pollutant treatment technology. This invention synthesizes an A-site lanthanum-doped lithium cobalt oxide catalyst in one step via a sol-gel method, and uses it to activate PMS to degrade pharmaceutical wastewater with carbamazepine as a model pollutant. In this invention, A-site lanthanum doping significantly enhances the activation ability for PMS, achieving the goal of highly efficient carbamazepine degradation. Simultaneously, during the catalytic degradation of carbamazepine using cobalt as the active site, the leaching of cobalt ions is extremely low after five cycles; furthermore, the catalyst material exhibits strong cycle repeatability. This invention improves the degradation rate of carbamazepine through a simple synthesis method, making it suitable for industrial application.

Provided are methods of producing cobalt-based nanoparticles (CoxBy NPs) of a pre-selected diameter. The methods include reducing Co2+ ions with a sodium borohydride (NaBH4) solution having a selected ratio of tetrahydroxyborate (B(OH)4−) to tetrahydroborate (BH4−) based on the pre-selected diameter, where the ratio of B(OH)4− to BH4− is positively correlated with the pre-selected diameter. Also provided are methods of using the CoxBy NPs to produce hollow metal nanospheres (HMNs). Methods of producing CoxBy NP core / metal shell structures are also provided, such methods including combining in an anaerobic galvanic exchange reaction a deaerated solution including CoxBy NP scaffolds and a deaerated solution including a metal. Also provided are methods of producing HMNs from the CoxBy NP core / metal shell structures. Compositions and kits that find use in practicing the methods of the present disclosure and using HMNs produced in accordance with the methods of the present disclosure, are also provided.

The invention belongs to the technical field of sterilization and disinfection materials, and particularly relates to a wrapped slow-release chlorine composition and a preparation method and application thereof.The composition is of a unique dual-wrapping structure, the core is a mixture of sodium chlorite and a stabilizer, the composition is primarily wrapped with hydrophobic modified chitosan microspheres and then combined with citric acid, and the wrapped slow-release chlorine composition is prepared. And finally, the metal coordinated polyethylene glycol hydrogel is used for outer layer coating to form a complete slow-release system. The preparation method comprises the following steps: firstly, preparing a microsphere carrier through hydrophobic modification and cross-linking curing of chitosan and lauric aldehyde; then, polyethylene glycol amine and a derivative of pyridinedicarbonyl chloride are subjected to cobalt ion coordination to form hydrogel; finally, the chlorine source components are combined and formed through adsorption, mixing and coating processes in sequence. The composition can effectively control the release rate of the chlorine component, has long-acting and stable sterilization and disinfection effects, and can be widely applied to the fields of water treatment, food preservation, medical instrument disinfection, agricultural disease control and the like.

The invention relates to the technical field of photoelectrocatalysis, in particular to a Co (II) coordination polymer photoelectrode crystalline material and a preparation method and application thereof. The Co (II) coordination polymer {[Co (H2O) (Br-BDC) (BMIP)]. H2O} n is obtained from organic ligands BMIP, H2 (Br-BDC) and cobalt salt through a solvothermal method, cobalt (II) ions serve as three connection nodes, BMIP and H2 (Br-BDC) ligands serve as bridging ligands to be in mutual bridging, a two-dimensional honeycomb structure is formed, and a three-dimensional supramolecular structure is formed between layers through intermolecular hydrogen-bond interaction and pi-pi stacking. Wherein H2 (Br-BDC) is 2, 5-dibromoterephthalic acid, BMIP is 1, 3-bis (dimethylimidazolyl) propane, and n is a positive integer. The Co (II) coordination polymer shows relatively good photoelectric property, has the potential of serving as a photoelectrode material, has good optical and electrical characteristics, can be used for constructing an efficient photoelectrocatalysis water decomposition system, and has an application prospect in the aspects of photoelectric hydrolysis water oxidation and the like.

The application discloses a morphology-controllable cobalt-based MOF catalytic electrode and a preparation method and application thereof, and belongs to the field of nanometer catalytic material preparation technology and hydrogen production by water electrolysis. The MOF catalytic electrode is prepared by using divalent cobalt ions and a novel 2,4,6,-tris(3,5-dicarboxyphenylamino)-1,3,5-triazine organic ligand as precursors, N,N-dimethylformamide and methanol as solvents, and a hot solvent method in situ growth on a substrate. The morphology of the MOF and the catalytic performance can be controlled by adjusting the solvent ratio, the preparation temperature and time and other conditions. The novel MOF catalytic electrode prepared by the application does not use noble metals, the used material is relatively low in price, can be directly used as a high-performance oxygen evolution and hydrogen evolution electrode, does not need to additionally introduce a binder and is firmly combined with the electrode, simplifies the electrode / catalyst preparation process and has good catalytic stability, and therefore has a wide application prospect in the field of alkaline water electrolysis hydrogen production.

A luminescent material is a complex with the following structural formula: wherein R and R' are independently selected from oxygen, amino, C1-C18 straight-chain or branched alkyl-substituted amino, phosphin, C1-C18 straight-chain or branched alkyl-substituted phosphin, sulfur, and selenium; R1, R2, R3, R4, R5, and R6 are independently selected from hydrogen, C1-C18 straight-chain or branched alkyl or halogen-substituted C1-C18 straight-chain or branched alkyl, aromatic... Aromatic groups such as benzene, thiophene, and furan, n = 1–3, are used to construct cyclic ligand skeletons with different half-ring numbers. Ln is one of the following: cerium trivalent ion, europium divalent ion, ytterbium divalent ion, and samarium divalent ion. M is one of the following: manganese divalent ion, cobalt trivalent ion, chromium trivalent ion, vanadium trivalent ion, and ferric trivalent ion. X is a monovalent ion, such as halogen, cyanide, thiocyanate, isothiocyanate, etc., m = 0–3, l = 3–6. X acts as a monodentate ligand or as a bridging bidentate ligand.

The application provides a copper adsorption material and a preparation method and application thereof, and the copper adsorption material is prepared by using salicylic hydrazide monomers and methacrylic acid as raw materials through an emulsion polymerization method. The salicylic hydrazide monomers used in the application are salicylic hydrazide derivatives with introduced propylene bonds, and the multi-dentate coordination structure of the salicylic hydrazide derivatives can specifically chelate copper ions; the hydrophilic monomer used is methacrylic acid, and the carboxyl group of the methacrylic acid can bring good hydrophilic performance to the material and improve adsorption kinetics. The copper adsorption material of the application is applied to a mixed solution containing copper ions, nickel ions and cobalt ions to selectively separate copper ions.

Provided is a method for removing impurities including aluminum from a metal-containing solution which is obtained from lithium battery waste and which contains aluminum ions, iron ions, cobalt ions, and / or nickel ions, said method comprising a dealumination step for removing aluminum by raising the pH of the metal-containing solution under the presence of phosphate ions and precipitating aluminum, wherein the iron ions in the metal-containing solution provided for the dealumination step include divalent iron ions.

The invention discloses a preparation method and application of an asymmetric CoTe double-monatomic oxygen reduction electrocatalyst. Comprising the following steps: firstly, forming a three-dimensional network structure through hydrolysis and polycondensation of a metal precursor, and calcining to obtain a metal-carbon composite material; copolymerization is carried out on cobalt ions and a nitrogen / carbon-containing precursor, and a structure that Co nano-particles are embedded into a nitrogen-doped carbon matrix is generated at a high temperature. Adding the obtained Co-NC into an absolute ethyl alcohol solution to form a suspension, adding TeCl4 and Na BH4, and carrying out a sealed high-pressure solvothermal reaction; and after the reaction is finished, cooling to room temperature, centrifugally separating, collecting, washing, drying at low temperature, and annealing at low temperature in an argon atmosphere to obtain the electrocatalyst. The heteronuclear tellurium atoms can effectively polarize charge distribution of other metal atoms through short-range regulation and control. Besides, compared with a Co or Te monatomic site, the CoTe diatomic site is beneficial to reducing a conversion energy barrier from * O to * OH through co-adsorption of the intermediate, and shows excellent alkaline ORR performance.

This invention discloses a novel cobalt ion highly sensitive and selective colorimetric reagent and its applications. The structural formula of the novel cobalt ion colorimetric reagent is shown below. The azo colorimetric reagent of this invention showed high sensitivity to Co in the detection of seventeen metals. 2+ For specific detection, a buffer solution and surfactant are added to the test solution, followed by the addition of a colorimetric reagent. The Co content in the solution... 2+ It forms a stable orange-red complex with the colorimetric reagent in an acidic environment. The maximum absorption wavelength of the cobalt complex is 426 nm, and the detection limit of cobalt is 5 × 10⁻⁶. ‑3 mg / L, detection limit is 1×10 ‑2 The detection limit is low and the sensitivity is high (mg / L). This invention uses spectrophotometry for cobalt ion detection, where the chromogenic compound is an environmentally friendly material that does not cause environmental pollution during the detection process. It does not require large instruments and equipment, and is simple, efficient, and convenient to operate.

The invention relates to a high-purity ethylene production method and system. The production method comprises the following steps: S1, gasifying: pressurizing an industrial ethylene raw material and gasifying; s2, primary adsorption and purification: feeding the gasified industrial ethylene raw material gas into a primary adsorber for primary purification, and removing H2O, C2H2, CO2 and hydrocarbon impurities above C3 from the raw material gas through the primary adsorber; s3, secondary adsorption and purification: introducing the primarily purified ethylene gas subjected to primary adsorption and purification into a secondary adsorber, and carrying out adsorption-expansion desorption to obtain quasi-high-purity ethylene; s4, entering a multi-stage membrane filtration unit: enabling the quasi-high-purity ethylene subjected to secondary adsorption purification to sequentially penetrate through a plurality of membranes loaded with metal ions, so as to obtain high-purity ethylene; the metal ions are one or a mixture of more of silver ions, cobalt ions, copper ions and titanium ions. Compared with the prior art, the method provided by the invention has the advantages of short flow, low energy consumption, good separation effect, strong process continuity, high product purity and low impurity content, and can meet the production of high-purity ethylene above G5 requirements.

The invention relates to the technical field of environmental catalysis and advanced oxidation, in particular to a composite catalyst based on abnormal adsorbate type strong metal-carrier interaction (AA-SMSI), a preparation method of the composite catalyst and activation application of the composite catalyst to potassium peroxymonosulfate (PMS). The composite catalyst comprises a nanoscale carrier CeO2 and cobalt nanoparticles which are loaded on the carrier and have a core-shell structure. The unique core-shell structure of the composite catalyst effectively inhibits leaching of cobalt ions and aggregation of nano particles through physical packaging, the stability is greatly improved, the under-coordination shell layer of the composite catalyst also serves as a high-activity site, the PMS activation capacity is remarkably enhanced, and therefore ultrahigh activity and stability are achieved at the same time. The preparation process of the composite catalyst is mild, controllable and environment-friendly, a new thought is provided for breaking through the bottleneck that activity and stability in a traditional catalytic system are difficult to consider at the same time, and the composite catalyst has wide application prospects in the fields of advanced oxidation, industrial wastewater treatment and environmental catalysis.