170 results about "Activated persulfate" patented technology

The invention discloses a preparation method and application of a high-valence nickel monatomic catalyst, through the synergistic effect of nickel-phenanthroline complexing and inert template anchoring, dense and stable anchoring sites are provided for nickel atoms, atom migration and agglomeration in the high-temperature pyrolysis process are effectively inhibited, and the high-valence nickel monatomic catalyst is prepared. Meanwhile, by combining with an air-inert atmosphere two-step calcination procedure, air pre-oxidation is carried out, and a nickel precursor is stabilized in a carrier framework to prevent the nickel precursor from being reduced into a metal state in subsequent high-temperature inert calcination, so that the nickel precursor is locked in an electron-deficient high valence state, and a nickel-loaded material with the nickel loading capacity of 2.9-9.2 wt% and the nickel loading capacity of 9.2-9.2 wt% is prepared. And the nickel element stably exists mainly in the form of Ni < 3 + > or a higher-valence monatomic form, so that the three-in-one breakthrough of high load, high valence and high stability is realized. When the obtained catalyst activates persulfate, high-valence metal oxygen species are preferentially generated, various new pollutants are degraded, and the catalyst has high activity, selectivity and high stability.

The invention relates to an organic combined polluted underground water in-situ remediation method based on a micro-nano iron-based material. The method comprises the following steps: acquiring underground water pollution information; establishing a composite reaction zone at a preset position, and constructing a reduction-oxidation chain reaction system; and operating the composite reaction zone, collecting monitoring data, and optimizing the composite reaction zone until the composite pollution is degraded and removed to a preset value. Through series reaction of powerful reduction of the micro-nano iron-based material and advanced oxidation of the iron-based activated persulfate, the performance of the micro-nano iron-based material serving as a strong reduction material and an active agent is fully played, pollutants such as halogenated hydrocarbon in underground water are sequentially subjected to reduction degradation, pollutants such as benzene series and volatile phenol are sequentially subjected to oxidative degradation, and the pollution to the underground water is reduced. Effective management and control of underground water combined pollution of medical and chemical parks and enterprises are realized; a monitoring well is configured based on a composite reaction zone, and remediation materials are discontinuously added in combination with management and control conditions, or other management and control materials are flexibly selected, so that long-term management and control of groundwater pollution risks are realized.

The invention discloses a composite membrane with adsorption separation and catalytic degradation functions as well as a preparation method and application of the composite membrane. The composite membrane is supported by a porous base membrane, a polyamide separation layer formed by reaction of a 3, 4-dihydroxyphenylethylamine and 2, 3-diaminophenol comonomer and acyl chloride is constructed on the surface of the porous base membrane through interfacial polymerization, and FeCo-g-C3N4 nanosheets are anchored in situ; the membrane can efficiently activate peroxymonosulfate (PMS) to generate free radicals under the nearly neutral condition, efficient interception and catalytic degradation of organic pollutants (such as antibiotics) are synchronously achieved, and heavy metal ions (such as Pb < 2 + > and Cd < 2 + >) are adsorbed through a functional monomer structure; the invention provides an interfacial polymerization preparation method of the membrane. The composite membrane breaks through the limitation of'only interception but not degradation 'of a traditional membrane, realizes integration of'separation-adsorption-degradation', can remarkably reduce the volume of concentrated water and reduce the toxicity of the concentrated water, and is suitable for advanced treatment of wastewater containing composite pollutants in the industries of pharmacy, printing and dyeing and the like.

The invention discloses an algae-based iron-carbon catalyst as well as a preparation method and application thereof, and relates to the technical field of new material research and development and sewage treatment. The preparation method comprises the following steps: mixing ferrocene, diatomite and a solvent to obtain a mixed solution; adding a hydrogen peroxide solution into the mixed solution, and then heating for reaction to obtain an intermediate; and roasting the intermediate to obtain the algae-based iron-carbon catalyst. According to the invention, ferrocene and diatomite are used as raw materials, and the high-performance algae-based iron-carbon catalyst is prepared through simple solvothermal reaction and roasting treatment. The obtained algae-based iron-carbon catalyst is stable in structure, high in activity and wide in applicable pH range in a persulfate oxidation system, and can be used for activating persulfate to degrade antibiotic pollutants in water.

The invention belongs to the technical field of antibiotic pollutant degradation, and discloses a method for degrading antibiotic pollutants by using boron-carbon co-regulated nanoscale zero-valent iron as an activating agent, which comprises the following steps: step 1, synthesizing carbon-coated nanoscale zero-valent iron, marked as Fe0-C, through a hydrothermal method and a carbothermic method; and step 2, mixing the Fe < 0 >-C obtained in the step 1 with crystal boron, adding the mixture into sewage containing antibiotic pollutants, and then adding persulfate as an oxidizing agent to degrade the antibiotic pollutants. A boron-carbon co-regulation method is adopted to realize the passivation resistance of the nano zero-valent iron in the whole process from preparation, storage to application, and the nano zero-valent iron is applied to the process of activating persulfate to degrade tetracycline.

The invention provides a ZIF-67 (at) Co / HPLFM composite material and a preparation method and application of the ZIF-67 (at) Co / HPLFM composite material, and the preparation method comprises the following steps: providing a hollow porous straw lignin fiber membrane (HPLFM); cobalt salt is dissolved in absolute ethyl alcohol, the hollow porous straw lignin fiber membrane is taken and placed in the mixed solution, absolute ethyl alcohol dissolved with 2-methylimidazole is dropwise added into the mixed solution after oscillation, and oscillation continues for a period of time; taking out the hollow porous straw lignin fiber membrane, washing, and freeze-drying to obtain a precursor material; and carrying out high-temperature calcination on the precursor material to obtain the ZIF-67 (at) Co / HPLFM composite material. The high surface activity and the porous hollow structure of the hollow porous straw lignin fiber membrane are utilized, ZIF-67 is loaded on HPLFM, the ZIF-67-coated Co / HPLFM composite material is obtained through further treatment, and the material has high specific surface area and excellent adsorption performance and has good application prospects in organic pollutant degradation by activating peroxymonosulfate.

The invention discloses a method for removing grease in neodymium-iron-boron oil sludge waste by self-activated persulfate, which comprises the following specific steps: adding neodymium-iron-boron oil sludge waste into a stirring device, adjusting the concentration, pH value and temperature of slurry, then adding persulfate into the slurry, stirring for a certain time, and then dehydrating to obtain a qualified neodymium-iron-boron product. According to the method, hydroxyl free radicals and sulfate free radicals are generated through neodymium iron boron self-activation persulfate, grease substances in the neodymium iron boron oil sludge waste can be degraded into CO2 and H2O, rapid analysis of the grease substances from the surfaces of neodymium iron boron particles is achieved, and efficient deoiling can be achieved after solid-liquid separation. The method has the characteristics of simplicity in operation, high deoiling efficiency and wide application range.

The invention belongs to the technical field of wastewater treatment and energy recovery, and particularly relates to a self-driven electro-catalysis system for activating persulfate to degrade antibiotics and application of the self-driven electro-catalysis system. The invention provides a self-driven electro-catalysis system for activating persulfate to degrade antibiotics. The self-driven electro-catalysis system comprises a reaction unit, an electrolyte and an external circuit wire, the reaction unit comprises a cobalt sheet anode and a carbon rod cathode; the external circuit lead is used for connecting the cobalt sheet anode and the carbon rod cathode; and an electrolyte in the electrolyte solution comprises Na2SO4. According to the self-driven electro-catalysis system, in a wastewater solution containing antibiotics, persulfate and supporting electrolyte, an external power source is not needed, spontaneous electron transmission is formed through the potential difference of the cobalt sheet anode and the carbon rod cathode, and self-driven PMS activation and antibiotic pollutant degradation are achieved.

The application discloses a method for treating organic pollutant wastewater by using manganese monoxide-graphite diacetylene nano-confined catalytic material to activate persulfate, the method is to degrade and treat organic pollutant wastewater by using manganese monoxide-graphite diacetylene nano-confined catalytic material as a catalyst for activating persulfate, and the nano-confined catalytic material comprises graphite diacetylene nanosheets, and manganese monoxide nanoparticles are confined between the layered structures of the graphite diacetylene nanosheets.The method has the advantages of rich active sites, fast electron transfer and stable structure, so that the catalytic degradation system is not only high in efficiency, but also strong in adaptability, and shows good degradation effect on various organic pollutants, and has the advantages of simple process, convenient operation, high treatment efficiency, good removal effect, strong adaptability, green environmental protection and the like, and has important promoting significance for deep purification of organic pollutant wastewater.

The invention relates to the technical field of bamboo processing and modification treatment, and discloses a method for improving high-permeability bamboo modification, which comprises the following steps: preparing a mixed aqueous solution of 9.25-37 mmol / L of alkali compound and 9.3-27.8 mmol / L of persulfate, and dipping bamboo at normal temperature for 3-6 hours; the soaked bamboo wood is heated and activated, and the activation mode is selected from one of 60-80 DEG C constant-temperature water bath treatment, 300-550 W microwave radiation treatment or 100-400 W ultrasonic radiation treatment; and after the activated bamboo wood is cleaned to be neutral, freeze drying is conducted at the temperature ranging from-50 DEG C to-70 DEG C. According to the method, free radicals generated by alkali liquor swelling and synergistic thermal activation of persulfate are utilized, bamboo blocking pore extracts are oxidized and degraded, a fluid conduction path is dredged, the permeability and porosity of the bamboo are improved, the original mechanical strength of the bamboo is kept, and the technical problems that traditional modified liquid medicine is difficult to permeate, and a skeleton is damaged due to strong base treatment are solved.

The application discloses a method for activating persulfate for improving the degradation performance of organic pollutants based on a flow-through electrocatalytic membrane, which comprises two steps of preparing a boron nitride electrocatalytic membrane loaded with bimetallic nanoparticles and carrying out a flow-through degradation reaction. Compared with a traditional mode, the flow-through mode provided by the application realizes effective coupling of a membrane catalytic system and a conventional electro-activated persulfate system, breaks through the limitation of low mass transfer efficiency, significantly improves the utilization rate of persulfate, and thus improves the degradation efficiency of organic pollutants. The flow-through reactor provided by the application has the advantages of simple structure, strong operability, low catalyst loss and good stability, has a wide industrial application prospect, and provides an efficient, economical and sustainable solution for the degradation of organic pollutants.

The present application relates to a kind of iron salt reinforced heat-activated persulfate treatment organic wastewater method, the method includes the following steps: adding iron salt to wastewater, adjust the pH of solution to acidic, subsequently control the reaction temperature to be above 60 DEG C, and add persulfate to reaction solution to carry out reaction, after reaction, solid-liquid separation is carried out to reaction system, realize the complete removal of organic pollutants.The present application is based on heat-activated persulfate polymerization removal organic pollutants, introduce iron salt to strengthen the polymerization removal process of organic matter.Compared with prior art, by the synergistic effect of iron salt and persulfate, the utilization efficiency of oxidant and the removal rate of organic pollutants are greatly improved, while the generation of toxic intermediates is reduced, the application range of polymerization removal organic pollutants in water is widened, and the carbon emission problem caused by CO2 is avoided.

This invention discloses a method for preparing and applying a class of highly efficient catalytic materials for activating persulfate. The preparation method includes: dispersing g-C3N4 in nitric acid at room temperature, stirring, washing, and drying to obtain g-C3N4-H; placing it in an inert atmosphere and treating it at high temperature to obtain a g-C3N4 substrate; mixing it with iron salt, cobalt salt, water, and 1,10-phenanthroline to obtain a suspension; evaporating to dryness, grinding, drying, treating at high temperature, dispersing in nitric acid, washing, drying again, treating at high temperature in an inert atmosphere, and naturally cooling to obtain FeCo-g-C3N4 catalytic material. The method of this invention constructs structurally stable and highly dispersed FeCo bimetallic-nitrogen-carbon active centers on the g-C3N4 substrate; it can achieve efficient degradation of pollutants with low dosage, while the metal leaching rate is extremely low, avoiding secondary pollution; this catalytic material combines high activity, high stability, environmental friendliness, and operational economy, showing outstanding application potential in the field of advanced oxidation water treatment.

The invention relates to an oil-containing sludge biochar catalyst, a preparation method thereof and a method for removing organic pollutants in sewage, the method comprises the following steps: S1, heating a mixture containing saccharides, amino compound raw materials, inorganic alkali and oil-containing sludge for Maillard reaction to obtain a precursor containing a nitrogen-containing heterocyclic compound; wherein the amino compound raw material contains amino acid and / or protein; and S2, in an inert atmosphere, carrying out pyrolysis on the precursor containing the nitrogen heterocyclic compound. The oily sludge biochar catalyst prepared by the method disclosed by the invention has a better catalytic effect on activating persulfate to degrade organic pollutants in a water body.

The invention discloses a Co3O4-Cu2-xS composite photo-thermal catalyst as well as a preparation method and application thereof. The composite photo-thermal catalyst is prepared by taking a surfactant as a bridge and compounding Co3O4 and Cu2-xS. The composite photo-thermal catalyst has a reduced band gap width, can effectively promote migration and separation of photon-generated carriers, enhances the absorption efficiency of visible light-near infrared light, and shows excellent photo-thermal conversion performance. The composite photo-thermal catalyst can be used for constructing a Co3O4-Cu2-xS + PMS + NIR catalytic system, and peroxymonosulfate is activated under the irradiation of near-infrared light so as to degrade antibiotics in water. Experiments prove that the Co3O4-Cu2-xS + PMS + NIR system disclosed by the invention can achieve the degradation rate of 99% on levofloxacin within 20 minutes, and the generation efficiency of active species is remarkably improved through the synergistic effect of a photothermal effect and interface activation. The catalyst has broad-spectrum degradation activity on various antibiotics, keeps efficient and stable catalytic performance in a wide pH range, and shows excellent ion interference resistance and adaptability to various water bodies.

This invention belongs to the field of straw resource utilization technology, and discloses a method for preparing and applying an amino-containing straw cellulose CuFe composite material. By pretreating straw with ammoniation at low temperature to increase the proportion of nitrogen-containing active functional groups and improve the adsorption capacity of the straw material, a spherical amino-containing straw cellulose CuFe composite material is synthesized using a one-step hydrothermal method. This spherical amino-containing straw cellulose CuFe composite material can be used to activate persulfate to degrade pesticides and other organic pollutants in soil or farmland runoff, exhibiting the characteristic of simultaneous adsorption and degradation of organic pollutants, thus achieving in-situ degradation of pesticide residues in soil.

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 invention discloses a nitrogen-doped carbon-coated cobalt fluoride spherical core-cavity-shell catalyst and a preparation method and application thereof.The preparation method comprises the steps that cobalt fluosilicate hexahydrate and glucose are mixed, a solvent is added, stirring, solvothermal reaction and drying are performed, an obtained precursor is calcined, and the nitrogen-doped carbon-coated cobalt fluoride spherical core-cavity-shell catalyst is obtained. The nitrogen-doped carbon coated cobalt fluoride spherical core-cavity-shell catalyst is obtained. Compared with other existing cobalt-based-carbon composite materials, the spherical core-cavity-shell catalyst prepared through the method has better catalytic activity, higher stability, lower metal ion leaching rate and more environment-friendly performance, is a core-cavity-shell structure catalyst with excellent performance, and has the advantages that when the spherical core-cavity-shell catalyst is used for activating persulfate, the performance of the catalyst is greatly improved, and the service life of the catalyst is prolonged. The non-free radical Fenton reaction system can be formed, organic pollutants (such as antibiotics) in a water body can be rapidly degraded, the use value is high, the application prospect is good, meanwhile, the method has the advantages of being simple in preparation condition, high in yield, low in cost, high in operability and the like, and batch production is easy.

This invention discloses a short-range pretreatment method for lithium battery production wastewater. The method involves adjusting the pH value of the wastewater, adding persulfate and ferrous sulfate to oxidize and remove NMP, and then adding polyacrylamide to the NMP-removed wastewater for flocculation. The rate gradient of the flocculation reaction is controlled, and nano-graphite is precipitated and separated to obtain pretreated lithium battery production wastewater. This method utilizes the reaction between nano-graphite and Fe... 2+ A co-activated persulfate oxidation method was used to oxidize NMP in lithium battery production wastewater, improving the removal rate and biodegradability of NMP. Based on this, nanofiltration graphite was used for flocculation and sedimentation separation. This method utilizes nano-graphite and Fe... 2+ The co-activated persulfate oxidation method was used to oxidize NMP in lithium battery production wastewater, improving the removal rate and biodegradability of NMP; and it also improved the flocculation and sedimentation separation effect of nanofiltration graphite, shortening the process flow and reducing energy consumption.

The invention discloses a method for removing refractory dyes in water by activating persulfate with iron-loaded biochar, and relates to the field of water treatment. The preparation method of the iron-loaded biochar comprises the following steps: taking red mud and bamboo leaves as raw materials, drying and grinding, mixing according to different proportions, carrying out pyrolysis carbonization in a muffle furnace in a nitrogen atmosphere at 800 DEG C, naturally cooling to room temperature, grinding and sieving, and finally obtaining the required iron-loaded biochar. The iron-loaded biochar prepared by the method has the advantages that waste can be treated by waste, the preparation cost is low, the persulfate catalytic activation performance is excellent, and the like. In addition, the material has certain magnetism, and the problem that heterogeneous catalysts are difficult to separate in practical engineering application can be solved.

This invention discloses a nitrogen-doped carbon-based supported cobalt catalyst and its application in the degradation of hydroxyl-containing aromatic pollutants. Targeting hydroxyl-containing aromatic pollutants, this invention uses specific conditions to prepare a nitrogen-doped carbon-based supported cobalt catalyst for activating persulfate and degrading specific organic pollutant systems. It establishes a coordination anchoring effect between cobalt and nitrogen-containing sites, improving carbon framework defects and electron transport capabilities, while reducing the risk of metal leaching. This effectively improves catalytic performance and selectivity, achieving efficient activation of persulfate under near-neutral conditions to achieve efficient degradation of hydroxyl-containing aromatic pollutants.

Water treatment systems are disclosed. The system includes an electrochemical cell having an inlet and an outlet, a cathode comprising a catalytic material for electrochemical generation of persulfate free radicals, and an anode, a source of a persulfate positioned upstream of the electrochemical cell, first contaminant concentration sensor positioned upstream of the electrochemical cell, and a controller operatively coupled to receive one or more input signals from at least the first contaminant concentration sensor. Methods of treating water using the electrochemical cell disclosed herein are disclosed. Methods of facilitating water treatment by providing the electrochemical cell disclosed herein are disclosed. Methods of retrofitting a water treatment system having an AOP by providing the electrochemical cell disclosed herein are disclosed.

The application discloses a cobalt sulfide / titanium carbide / carbon cloth composite anode material and a preparation method and application thereof. In order to solve the problems of the existing anode material, such as low efficiency of activating persulfate, limited electron transmission efficiency, difficulty in generating non-radicals, and complex preparation process of titanium carbide material and other materials, the application uses anhydrous ethanol and dimethylformamide as organic solvents, which can improve the solubility and dispersity of the titanium carbide material in the organic solvents and is beneficial to the generation of high-purity metal sulfide in a suitable proportion. Meanwhile, the application realizes the growth of the titanium carbide and the cobalt sulfide on the carbon cloth substrate by using a one-step solvothermal method under high temperature and high pressure, makes the cobalt sulfide grow on the surface and between the layers of the titanium carbide without changing the layered structure of the titanium carbide, and obtains the cobalt sulfide-titanium carbide-carbon cloth composite anode material, which is beneficial to the high-speed electron transmission on the electrode surface under the electric field and the generation of non-radicals. The application belongs to the technical field of electrocatalytic materials.

A sulfur-modified iron-nitrogen-carbon catalyst and its preparation and application. The present application relates to a preparation method of a series of sulfur-doped iron-nitrogen-carbon catalysts with high catalytic activity obtained by changing the addition amount of thiourea in the catalyst synthesis process and its application. Even under the water quality conditions containing a series of high-concentration inorganic anion humic acid, the catalyst can still achieve high-efficiency degradation of hydroxybenzoic acid. The sulfur atom doping plays a very important role in improving the activity of the main catalytically active site Fe-N4 activated persulfate, forming a catalytic reaction system dominated by singlet oxygen active groups, and realizing selective degradation of organic pollutants with different molecular structures, not only meeting the requirements of high catalytic activity, high stability and high adaptability of the catalyst, but also providing an effective preparation method for improving the catalytic activity of the traditional Fe-N4 structure site, which has good prospects in the application field of degrading organic wastewater containing a large amount of complex matrix.

The invention relates to the technical field of advanced oxidation technology and environmental functional materials, and particularly discloses a high-temperature self-circulation iron-based slow-release catalyst as well as a preparation method and application thereof. The catalyst comprises a matrix layer, an iron slow-release layer and a protective layer which are sequentially arranged from inside to outside, the matrix layer is a high-temperature-resistant porous ceramic skeleton with a spinel structure; the iron slow-release layer is a Fe0 at amorphous Fe2O3 core-shell structure micro-capsule which is loaded on the base body layer; and the protective layer is a CuO-CoO electron mediating functional layer rich in oxygen vacancies. The preparation method disclosed by the invention is simple in process, mild in condition and easy for large-scale production. The prepared catalyst can efficiently and enduringly activate persulfate or hydrogen peroxide under medium and high temperature conditions, and especially shows optimal activation performance on peroxydisulfate (PDS). The invention provides an efficient, stable and environment-friendly novel catalytic material and a technical solution for long-acting deep treatment of high-concentration and refractory industrial wastewater.

This invention provides a method for the degradation of bisphenol A (BPA) by persulfate activated by tea residue and iron filings. The method includes: freeze-drying and pulverizing tea residue to obtain coarse tea residue powder; sieving the coarse tea residue powder to obtain tea residue powder; mixing the tea residue powder with iron-containing substances to obtain an iron-containing tea residue mixture; adding the iron-containing tea residue mixture to a solution containing persulfate and BPA to initiate a chemical reaction; and measuring the BPA content to obtain the measurement results. This invention utilizes tea residue to replace pure tea polyphenols, constructing a persulfate degradation system activated by tea residue and iron filings, achieving a high-efficiency removal of 93.7% of BPA. This not only maintains the complexation and reduction advantages of tea polyphenols but also realizes the resource utilization of waste. It provides a low-cost, green, and sustainable technical path for BPA pollution control, with significant environmental and economic benefits.

This invention discloses a method and application for preparing metal-doped composite catalysts based on ZIF-67, relating to the field of wastewater treatment technology. This invention constructs a multi-component synergistic system through the coordination of functional groups on the surface of biochar with ZIF-67 and the electronic coupling effect between rare earth metals and Co. Compared with traditional pure chemical support synthesis methods, this reduces costs and improves environmental compatibility. The metal-doped composite catalyst prepared by this invention is a novel heterogeneous catalyst. Through the electrostatic interaction between the biochar support and Co ions, and the metal-metal bonds formed between La / Ce and Co, it significantly enhances the stability of Co ions, effectively avoiding secondary pollution. The metal-doped composite catalyst prepared by this invention can efficiently activate persulfate to generate reactive oxygen species and synergistically remove multiple pollutants from complex water bodies containing sulfamethoxazole, tetracycline, levofloxacin, and other antibiotics such as methylene blue.

The invention discloses a Co9S8 / MoS2 / CNTs ternary composite catalyst and a preparation method and application method thereof, and relates to the technical field of catalysts.The preparation method comprises the following steps that S100, a precursor solution is prepared, specifically, a nitrogen-containing sulfur source compound, a transition metal cobalt compound and a transition metal molybdenum compound are jointly dissolved or dispersed in a first solvent, and a precursor solution is prepared; a uniform metal-sulfur coordination precursor solution is formed; s200, precursor curing: performing cryogenic freezing on the metal-sulfur coordination precursor solution, and then performing freeze drying to obtain a loose solid precursor; and S300, in-situ synthesis and compounding: carrying out one-step high-temperature heat treatment on the solid precursor in a protective gas atmosphere, and then cooling to room temperature to obtain the Co9S8 / MoS2 / CNTs ternary composite catalyst. The catalyst prepared by the preparation method is high in stability, good in catalytic performance, wide in pH application range and capable of being magnetically separated and recycled, and the efficiency of activating peroxymonosulfate to decompose organic pollutants is high.

The application discloses an activated persulfate catalyst and a preparation method and application thereof, and relates to the technical field of catalysts.The catalyst is a bismuth-carbon intercalation catalyst in a chain structure, and the preparation method comprises the following steps: S1, taking a bismuth salt and an acyl benzene ligand as reaction substrates, and synthesizing Bi-MOFs through a hydrothermal reaction; and S2, calcining the Bi-MOFs at 500-700 DEG C under an inert gas atmosphere to obtain the bismuth-carbon intercalation catalyst.The bismuth-carbon intercalation catalyst activates persulfate through a non-radical direct electron transfer path, has higher activity and selectivity, can more effectively sterilize and disinfect specific structures and metabolic processes of target microorganisms, and improves the treatment efficiency; and can reduce the generation of by-products, effectively reduces the risk of the environment and the human body.

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.