244results about How to "Improve catalytic performance" patented technology

The invention discloses a composite catalyst for a peracetic acid activation system and a preparation method and application thereof, and relates to the technical field of advanced oxidation water treatment. The preparation method of the catalyst comprises the following steps: preparing an aqueous solution of a cobalt source as a precursor solution; adding a manganese source into the precursor solution to obtain a Co-Mn mixed salt solution; adding a complexing agent into the Co-Mn mixed salt solution to form a stable sol system; heating the sol system at constant temperature to obtain wet gel; drying the wet gel to obtain a porous dry gel precursor; calcining the porous xerogel precursor, and then cooling and grinding to obtain the composite catalyst for the peracetic acid activation system. The composite structure in the catalyst greatly improves the rate of generating hydroxyl radicals and organic oxygen radicals by decomposing peracetic acid by promoting electron transfer circulation of a metal active center, shows good structural stability and recyclability, and is especially suitable for degradation of an organic pollutant sulfamethoxazole in a water body.

The invention relates to a diatomic iron-iron site nano-enzyme constructed by relieving oxidative stress and cartilage degeneration and used for targeted osteoarthritis treatment. According to the invention, a nitrogen-doped porous carbon anchored diatomic iron nano enzyme catalyst (Fe2-NCs) with Fe-Fe dimer coordination is developed by using a'subject-object 'strategy. The Fe2-NCs protect cartilage cells from oxidative stress induced apoptosis by modulating ROS and active nitrogen species (RNS) and promoting O2 release. In addition, Fe2-NCs restores mitochondrial function by inhibiting NOX4 expression, improving ATP production, and normalizing COXIV levels. In an in-vivo OA model, the Fe2-NCs can reduce the expression of a pro-inflammatory medium COX-2 through an NF-kappa B signal channel, inhibit the up-regulation of MMP-13 and delay the degradation of type II collagen. The invention provides a new theoretical framework and methodological approach for the treatment of osteoarthritis, and has important clinical and scientific significance.

This invention provides a coal tar pitch-based nickel catalyst, its preparation method, and its application, belonging to the field of solid waste resource recycling and synthetic carbon materials technology. This invention uses a mixed roasting method to prepare a coal tar pitch-based nickel catalyst with micropores and mesopores from the residual coal tar pitch after coal tar extraction. The synergistic effect of active nickel as an active site and the functional groups on the support surface significantly improves its catalytic liquefaction performance, exhibiting the advantages of "low cost, high temperature resistance, and strong adaptability." The preparation method provided by this invention not only offers an effective way for the high-value recycling of coal tar pitch but also provides a low-cost material for green conversion, environmental governance, catalysis, and other fields. It represents a green resource utilization strategy with significant economic and environmental benefits and broad commercial prospects.

The application relates to the technical field of organic wastewater treatment, in particular to a preparation method and application of an ozone catalyst, and the preparation method and application of the ozone catalyst, the method comprising the following steps: (1) ball milling, (2) melting and (3) staged cooling; the catalyst can promote the reaction between ozone molecules and refractory organic matters, effectively reduces the refractory COD in water, improves the COD removal rate, improves the ozone utilization rate, and achieves the purpose of improving the sewage treatment efficiency.

The invention belongs to the technical field of synthesis of 2, 3-dipicolinic acid, and relates to a catalyst for synthesizing 2, 3-dipicolinic acid as well as a preparation method and application thereof, the catalyst is prepared from a carrier, and active components and auxiliaries loaded on the carrier; the carrier is boron nitride modified aluminum oxide, the active component is palladium-cobalt bimetal, and the auxiliary agent is magnesium; the catalyst comprises the following components in percentage by mass: 0.2 wt%-3wt% of palladium, 0.5 wt%-4wt% of cobalt, 0.05 wt%-0.3 wt% of magnesium, 5wt%-15wt% of boron nitride and the balance of an aluminum oxide carrier. The catalyst is prepared by adopting an ultrasonic-assisted sol-gel method, so that high dispersion and strong interaction of active components are realized. The catalyst shows high catalytic activity, high selectivity and excellent stability in a dichloropyridine carbonylation reaction, carbon monoxide is used as a carbonyl source, the atom economy is high, and the green chemical requirement is met.

The application discloses a nitrogen-doped carbon-coated three-metal catalyst and a preparation method and application thereof, and belongs to the field of catalyst preparation and application. The method adopts sucrose, melamine and metal salt as low-cost raw materials, and forms an alkaline environment with the assistance of sodium hydroxide. In the environment, melamine is hydrolyzed into cyanuric acid, which is complexed with sucrose metal ions to form a stable supramolecular aggregate precursor containing metal, and then realizes effective encapsulation of the metal in a high-temperature pyrolysis process. The synergistic effect of the three metal elements Co, Ni and Zn significantly improves the performance of the catalyst, so that CoNiZnO@NC-600 not only exhibits high conversion rate (98.4%) and selectivity (99%) in the reaction of hydrogenation conversion of furfural to furfuryl alcohol, but also has excellent cycle stability, thereby providing a new efficient method for the hydrogenation conversion of biomass-derived compounds.

The application relates to the technical field of catalysts, and discloses a nano magnesium oxide material and a preparation method and application thereof. The nano magnesium oxide material has a porous structure, wherein the particle size of the nano magnesium oxide is 20-200 nm; and the pore size of the porous structure is 5-45 nm. The classical nucleation growth process of the magnesium oxide is directionally adjusted in a weak alkaline nucleation system, and then the nano magnesium oxide with a controllable grain size distribution is obtained. The nano magnesium oxide material has good catalytic activity in the synthesis of propylene carbonate from CO2 and an epoxide under the conditions of no solvent and no auxiliary agent, and the catalyst is not deactivated after multiple uses, and has good stability.

This invention discloses a transition metal phosphide catalyst, its preparation method, and its application, belonging to the field of electrocatalysis technology. The process includes: firstly, dissolving nickel salt, lanthanum salt, urea, and ammonium fluoride in deionized water to synthesize a nickel-lanthanum layered hydroxide nanosheet precursor via a hydrothermal method; secondly, preparing a lanthanum-doped nickel phosphide catalyst using a phosphating reaction; and thirdly, utilizing a lanthanum doping strategy to modulate the electronic structure of nickel phosphide and improve its electrocatalytic reaction performance. This lanthanum-doped nickel phosphide material exhibits good catalytic activity when used to catalyze hydrogen evolution and sulfide ion oxidation reactions. In an integrated two-electrode electrolyzer for sulfide ion oxidation-assisted hydrogen production, it outputs 10 mA cm⁻¹. ‑2 This invention achieves the goal of producing hydrogen and high-value-added sulfur products with low energy consumption by requiring a relatively low voltage of 0.525 V at a current density. It has advantages such as simple preparation process, controllable operating conditions, and low raw material costs, possessing the potential for large-scale production and serving as a high-performance catalyst for electrocatalytic hydrogen production and sulfur ion oxidation reactions.

The application discloses an electrode material based on MOF@COF / BC and application thereof in wastewater treatment and belongs to the technical field of wastewater treatment. The electrode material is prepared by the following method: NH2-MIL101(Fe), melamine and phthalocyanine molybdenum are dissolved in dimethyl sulfoxide, reaction is carried out at 160-200 DEG C for 10-14 h, the precipitate is collected after reaction, and washing, drying are carried out to prepare NH2-MIL101(Fe)@Mel-MoPc; the biochar and NH2-MIL101(Fe)@Mel-MoPc are mixed in deionized water, ultrasonic treatment is carried out for 8-12 min, stirring is carried out for 10-14 h, then the precipitate is collected by centrifugation, and washing, drying are carried out to prepare the electrode material. The application develops and designs a novel electrode material, which is used for electrocatalytic activation of peroxymonosulfate to degrade OFX wastewater, and the degradation efficiency of the OFX wastewater is greatly improved.

The utility model relates to a fuel cell membrane electrode with high stability and high catalytic performance, which comprises a proton exchange membrane, and gas diffusion layers are arranged on two sides of the proton exchange membrane. A cathode catalyst layer is arranged between one side of the proton exchange membrane and one gas diffusion layer, an anode catalyst layer is arranged between the other side of the proton exchange membrane and the other gas diffusion layer, the cathode catalyst layer comprises n pomegranate-structured cathode layers, the anode catalyst layer comprises n pomegranate-structured anode layers, and the number n of layers is greater than or equal to 3. Compared with the prior art at the cost of sacrificing the stability, the catalytic performance is improved on the basis of considering the stability and the process influence.

This invention relates to the field of electrocatalyst technology, and discloses a carbon fiber-supported Fe3O4 composite material, its preparation method and application, and a method for electro-Fenton oxidation degradation of organic pollutants. The method includes: (1) pretreating carbon fibers with hydrochloric acid to obtain pretreated carbon fibers; (2) reacting a mixed solution containing ferrous sulfate and nitrate with the pretreated carbon fibers and ammonia, allowing it to stand to obtain mixture I; and (3) heat-treating mixture I to obtain the carbon fiber-supported Fe3O4 composite material. This preparation method is simple, requires no particularly expensive equipment, can be synthesized at relatively low reaction temperatures, is easy to operate, and the resulting composite material exhibits excellent catalytic performance and stability.

The present invention relates to an air purification catalyst composition comprising porous manganese oxide, wherein the porous manganese oxide has a pore distribution such that pores having a pore size in the range of 0 nm to 6.0 nm account for at least 75% by volume of the total pores. The invention also relates to an air purification article comprising the air purification catalyst composition, as well as a method for producing the air purification article and a method for purifying an air stream.

This invention relates to the field of catalysts, specifically to a polyethylene catalyst and its preparation method, as well as ultra-high molecular weight polyethylene and its preparation method. The method includes the following steps: (1) under diluent conditions, a magnesium halide precursor, an alcohol compound, and a first internal electron donor undergo a first contact reaction to obtain a first reaction solution; (2) a second internal electron donor is added to the first reaction solution to undergo a second contact reaction to obtain a second reaction solution; (3) a titanium precursor is added to the second reaction solution to undergo a third contact reaction to obtain a third reaction solution; (4) a haloalkane is added to the third reaction solution, followed by a third internal electron donor to undergo a fourth contact reaction. The catalyst prepared by this invention exhibits good catalytic performance.

This invention relates to a method for in-situ synthesis of visible light photocatalytic geopolymers from vanadium-containing solid waste. The technical solution is as follows: vanadium-containing solid waste is ground into powder, and the resulting vanadium-containing solid waste powder is mixed with vanadium pentoxide powder. The resulting vanadium-containing geopolymer precursor is mixed with an alkaline activator and stirred evenly to obtain a vanadium-containing geopolymer slurry. The vanadium-containing geopolymer slurry is placed in a mold, cured, demolded, cured a second time, and crushed to obtain a crushed vanadium-containing geopolymer. The crushed vanadium-containing geopolymer is mixed with deionized water to obtain a vanadium-containing geopolymer aqueous solution. Bismuth nitrate solution is added to the vanadium-containing geopolymer aqueous solution, mixed evenly, and the pH value is adjusted. A hydrothermal reaction is then carried out. Solid-liquid separation, washing, and drying are performed to obtain the visible light photocatalytic geopolymer. This invention can efficiently utilize low-vanadium content and completely eliminate vanadium. The in-situ synthesis of visible light photocatalytic geopolymers from vanadium-containing solid waste not only effectively decomposes organic pollutants under visible light conditions but also effectively fixes vanadium in the vanadium-containing solid waste.

The application provides a metal oxide supported active metal catalyst, a preparation method and application thereof. The metal oxide supported active metal catalyst comprises a metal oxide carrier and active metal particles supported on the metal oxide carrier; the loading amount of the active metal is 0.1wt%-5wt% based on 100% of the mass of the metal oxide carrier. It is tested that the hydrogenation reaction of carbonates to prepare formate by using the metal oxide supported active metal catalyst provided by the application as a hydrogen source or using gaseous carbon monoxide with different concentrations and water to provide in-situ hydrogen source for the water gas shift reaction realizes the hydrogenation reaction of carbonates to prepare formate, the yield of the obtained formate is high, the selectivity is above 99%, there is no attenuation after 6 cycles, and the metal oxide supported active metal catalyst has excellent bifunctional effect. In addition, the preparation method of the metal oxide supported active metal catalyst is simple, the operation condition is mild, and the cost is low, so that large-scale production can be realized.

This invention discloses a method for preparing zeolite molecular sieves with precisely adjustable particle size, comprising the following steps: (1) adding aluminum source and other raw materials to deionized water and stirring evenly at room temperature; (2) adding silicon source, stirring at room temperature, and then adding template agent to obtain precursor slurry; (3) adding zeolite molecular sieve, the amount of zeolite molecular sieve being 1-15 mg / g of precursor slurry, transferring the precursor slurry to a high-pressure reactor, fixing it on a homogeneous reactor, heating to 0-150℃, maintaining for 1-200 h, and then heating to 160-230℃ for 3 hours to crystallize for 6-96 h; (4) obtaining zeolite molecular sieve after centrifugal washing, drying, and calcination. The innovation of the preparation method of this invention lies in the first use of a two-stage synthesis method, which can gradually reduce the particle size of the zeolite molecular sieve product while increasing the yield of zeolite molecular sieves. This method successfully synthesized SAPO-34 zeolite molecular sieve with a particle size deviation of less than 0.4 μm and ZSM-5 zeolite molecular sieve with a particle size deviation of less than 0.2 μm.

The application discloses a method for treating antibiotic wastewater by using a graphdiyne / ferrous indium sulfide nanocomposite to activate persulfate, and the method is characterized by using the graphdiyne / ferrous indium sulfide nanocomposite as a catalyst to activate persulfate for degrading and treating antibiotic wastewater, wherein the graphdiyne / ferrous indium sulfide nanocomposite comprises ferrous indium sulfide nanoparticles, and the nanoparticles are loaded with graphdiyne nanosheets. The method for treating antibiotic wastewater by using the graphdiyne / ferrous indium sulfide nanocomposite to activate persulfate uses the graphdiyne / ferrous indium sulfide nanocomposite as a catalyst, wherein the nanocomposite has many reactive sites, high catalytic activity and good stability, can efficiently activate persulfate with a smaller amount of catalyst, can efficiently remove antibiotics in wastewater, and has the advantages of low cost, high treatment efficiency, good removal effect, green environmental protection and the like, and therefore, the method has important significance for effectively purifying antibiotic wastewater, has high use value and good application prospect.

The application discloses an S-methyl-5'-thioribose kinase mutant and application thereof in ribose-1-phosphate synthesis, relates to the technical field of genetic engineering and enzyme engineering, and specifically discloses a high-activity S-methyl-5'-thioribose kinase mutant. The mutant is obtained through directional mutation, key mutations occur at the 128th position and the 240th position, and the catalytic efficiency on ribose-1-phosphate is significantly improved. The mutant is suitable for industrial production of ribose-1-phosphate and derivatives thereof.

The application provides a composite material for sludge dewatering, a preparation method thereof and a sludge dewatering conditioner. The composite material for sludge dewatering comprises magnetic porous carbon and molybdenum disulfide loaded on the magnetic porous carbon, wherein the magnetic porous carbon comprises porous carbon and ferroferric oxide loaded on the porous carbon. The preparation method comprises the following steps: mixing the magnetic porous carbon with a molybdenum source and a sulfur source, and performing a hydrothermal reaction to make the molybdenum source and the sulfur source react to generate molybdenum disulfide; after the reaction is completed, performing solid-liquid separation, collecting the solid product, and calcining the solid product under an inert atmosphere at 350-450 DEG C to obtain the molybdenum disulfide magnetic porous carbon composite material; wherein the magnetic porous carbon comprises porous carbon and ferroferric oxide loaded on the porous carbon; and the composite material for sludge dewatering can construct a molybdenum disulfide magnetic carbon-based composite material with a large specific surface area, high catalytic activity and high universality, and the composite material can improve the sludge dewatering performance.

The application provides a preparation method of a double-metal MOF material functionalized transistor sensor for BPA detection, and the material uses ZIF-8 as a carbon source, and a carbon material (Ce@ZIF8 / C) with rich mesoporous structures and good dispersed metal active sites embedded with Ce and Zn double metals is successfully prepared by using a direct pyrolysis method. The Ce@ZIF8 / C material prepared by the application can be applied to the functionalization of a gate electrode of an SGGT sensor, and an electrochemical sensor for real-time monitoring of an organic pollutant BPA in water can be successfully constructed. The electrochemical sensor constructed by the material synthesized by the application has good detection performance on BPA.

The invention relates to a preparation method of a phosphorus defect bimetallic oxygen evolution catalyst. The preparation method comprises the following steps: S1, dissolving 2.4 mmol of nickel chloride hexahydrate, 0.8 mmol of vanadium chloride and 300mg of urea in 80ml of deionized water, and uniformly stirring for 10 minutes; s2, putting a product obtained in the step S1 and foamed nickel into a 100ml reaction kettle, reacting at 120 DEG C for 12 hours, and drying in a drying box after reaction; s3, putting the product in S2 and 0.8 g of sodium dihydrogen phosphate into a tubular furnace, heating to 350 DEG C at a heating rate of 3 DEG C / min in an argon atmosphere, and reacting for 3 hours to obtain nickel vanadium phosphide loaded foamed nickel; and S4, the product obtained in the S3 is put into a sodium borohydride solution to be soaked for 30 min, the product is taken out and dried, and a final product, namely the nickel vanadium phosphide loaded foamed nickel with the vacancy defect, is obtained.

The invention discloses a metal-doped aluminum oxide supported alkaline catalyst as well as a preparation method and application thereof. The catalyst comprises a carrier and an alkaline component supported on the carrier, the carrier contains Al2O3 (aluminum oxide), AgxOy (silver oxide) and RemOn (iron oxide); agxOy is selected from one or more of elemental Ag and Ag oxide; remOn is selected from one or more of elemental Re and Re oxides; the alkaline component is selected from one or more of alkali metal, alkaline earth metal and organic alkaline compounds. According to the present invention, the catalyst carrier contains Al2O3, AgxOy and RemOn, and through the synergistic effect of the AgxOy and the RemOn in different forms, the loaded alkaline component and the optional modification component, the performance of the catalyst is significantly improved, such that the catalyst has the good catalytic performance, can achieve the adsorption removal and refining of different organic sulfur and inorganic sulfide under the low temperature condition, and has the good industrial application prospect. In addition, the catalyst can be regenerated repeatedly, and the preparation method of the catalyst is simple and easy to implement and convenient for industrial production.

The application provides a self-catalytic reformer based on a 3D printing technology and a manufacturing method thereof, and the method comprises the following steps: S1, respectively taking nickel-based alloy powder and / or iron-based alloy powder and nickel-aluminum alloy powder, mixing the powders uniformly in a mixing device to obtain printing powder; S2, using three-dimensional drawing software to obtain a shell structure with a reserved cavity; S3, using porous design software to obtain a porous structure, and the porous structure is matched with the reserved cavity of the shell structure; S4, 3D printing the self-catalytic reformer: taking the printing powder in step S1 and adding the powder into a powder supply bin of a 3D printer, then respectively taking the shell structure in step S2 and the porous structure in step S3 and introducing the structures into the 3D printer, and using 3D printing technology to print an integrally formed self-catalytic reformer. The self-catalytic reformer is obtained by the above method. The structure and function are integrated, no additional catalyst is needed, the catalytic efficiency is improved, and the production cost is reduced.

The invention belongs to the technical field of combustible gas catalysis, and particularly relates to a combustible waste gas catalytic conversion system based on self oxygen supply and application. The catalytic conversion system includes a housing; a flue gas inlet and a flue gas outlet are respectively formed in two ends of the shell; an oxygen supply device, a CO catalyst layer, a non-methane CH compound catalyst layer and an H2 and methane mixed catalyst layer are sequentially arranged in a shell of the catalytic conversion system in the direction from a flue gas inlet to a flue gas outlet. The oxygen supply device is used for generating oxygen, and an oxygen supply agent for generating the oxygen in the oxygen supply device comprises any one of NaClO3 or KClO3. The combustible waste gas catalytic conversion system is used for solving the problems that in the existing chemical production process, leaked flue gas treatment cost is high, efficiency is low, and the occupied area is large; the device has the advantages of high catalytic efficiency, compact structure, small occupied area, low production cost and maintenance cost and the like.

The application provides a ketoreductase mutant and application thereof in synthesis of a key chiral intermediate of tigogaral, and provides a ketoreductase mutant with an amino acid sequence as shown in SEQ ID NO: 4, 6, 8, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40 or 42. The ketoreductase mutant has higher carbonyl catalytic activity and chiral selectivity than a wild type, and is used for preparation of a key intermediate R-5,7-difluorobenzodihydropyran-4-ol of tigogaral.

This invention discloses a heterogeneous composite electrode material, which uses nickel foam as a carrier and forms a Ni3S2 / MnS heterogeneous composite material with a heterogeneous interface structure on the surface of the nickel foam. Fe is doped into both the Ni3S2 and MnS lattices of the Ni3S2 / MnS heterogeneous composite material. This heterogeneous composite material exhibits good catalytic performance and stability. This invention also provides a method for preparing the heterogeneous composite electrode material, which is simple, suitable for large-scale production, uses low-cost raw materials, and requires simple equipment, making it economical. Furthermore, this invention discloses an application of the above-mentioned heterogeneous composite electrode material in the field of alkaline water electrolysis.

This invention discloses a samarium-modified biochar catalyst, its preparation method, and its application. The method includes the following steps: Step 1, cleaning, drying, and grinding *Platycladus orientalis* leaves to obtain *Platycladus orientalis* leaf powder; Step 2, dissolving Sm(NO3)3·6H2O in deionized water to prepare a samarium salt solution, adding the *Platycladus orientalis* leaf powder to the samarium salt solution, stirring for 1 h, allowing it to stand and soak for 12 h, and then drying to obtain a samarium-supported *Platycladus orientalis* leaf powder precursor; Step 3, placing the samarium-supported *Platycladus orientalis* leaf powder precursor in a tube furnace, heating it to 500-700℃ at a heating rate of 5℃ / min under a protective gas atmosphere, pyrolyzing for 3-4 h, naturally cooling to room temperature, and then washing, drying, grinding, and sieving to obtain the samarium-modified biochar catalyst. The biochar catalyst prepared by this invention can efficiently and stably activate persulfate, thereby rapidly degrading amoxicillin in wastewater, and can be recycled multiple times. It has the advantages of low metal leaching rate and wide availability of raw materials.

The invention discloses a carrier supported multi-metal sulfide state nickel-based catalyst as well as a preparation method and application thereof. The catalyst is composed of a porous carrier loaded NixMySz active phase, M is a combination of at least one metal element of Co, Fe, Cu, Zn or Mn, multiple metal components form a synergistic structure in the vulcanization process, and through construction of Ni-S-M bonds, pinning effect generation and electron interaction, controllable adjustment of the sulfide structure is achieved, and the stability of the catalyst is improved. The catalyst is obtained by loading a nickel-second metal precursor on a porous carrier, roasting to form an oxide, vulcanizing in a sulfur-containing atmosphere, and activating. The obtained catalyst has an adjustable Ni: M molar ratio, a sheet-like or petal-like nanostructure and high-density sulfur defects. The catalyst is suitable for decarbonylation-dehydration reaction of bio-based fatty acid or derivatives thereof, and can efficiently convert C10-C20 fatty acid, methyl ester or ethyl ester thereof, and animal and vegetable oil or waste oil containing the components into long-chain olefin at 200-350 DEG C under 0.1-3 MPa.

This invention focuses on the application of a PtZn / Al2O3 bimetallic catalyst in the propane dehydrogenation reaction. A uniquely structured mixed oxide support was synthesized through a co-precipitation strategy incorporating an appropriate amount of silicon (Si), and metallic Pt was loaded using an equal-volume impregnation method. Benefiting from the uniform dispersion of Zn, Pt is atomically dispersed on the surface of Zn nanoclusters, improving metal utilization and catalytic efficiency. The introduction of Si significantly optimizes the metal-support interaction, greatly enhancing the catalyst's activity and stability. With catalyst particles of 20-40 mesh, it exhibits excellent catalytic performance, along with good high-temperature stability and resistance to carbon deposition. This preparation process is simple, reproducible, and achieves efficient and highly selective propylene production with low amounts of precious metals, demonstrating promising industrial application prospects.

The application belongs to the technical field of catalytic dye degradation, and particularly relates to a Co@C / FHP catalyst and a preparation method and application thereof. The preparation method comprises the following steps: dissolving Co(NO3)2.6H2O and terephthalic acid in DMF, adding fruit hair of Platanus (FHP), carrying out hydrothermal reaction, washing and drying, and then calcining under N2 atmosphere to obtain the Co@C / FHP catalyst. In the application, FHP is used as a carrier, Co-MOF is in-situ grown on the surface of the carrier, FHP is carbonized into a porous carbon carrier after pyrolysis, and Co-MOF is converted into metal cobalt nanoparticles wrapped by a carbon layer. The catalyst has the advantages of high dispersion degree of active sites, good stability and good conductivity, and can efficiently activate persulfate to degrade organic pollutants.