975results about How to "Efficient degradation" patented technology

The invention discloses a modified Trim 21 (delta Trim 21)-based target protein degradation control system, which takes a modified protein delta Trim 21 degradation system as a basis, takes blue light, abscisic acid, Danoprevir and / or MK-5172 as inductors, controls the combination of target protein and delta Trim 21 by introducing and modifying a controllable protein dimerization system on the basis of the modified protein delta Trim 21 degradation system, and improves the target protein degradation control system. The protein targeted degradation capable of being modularly regulated and controlled is carried out. Two regulation and control modules, namely a target protein recognition module and a degradation module based on E3 ubiquitinase, are constructed by splitting and recombining a controllable protein dimerization system and a delta Trim 21 structural domain. The invention also discloses a degradation device comprising the system. The invention also discloses a method for accurately regulating endogenous proteins (degradation of proteins related to tumorigenesis) by using the programmable regulation type modular protein degradation device, so as to achieve the effect of specifically killing tumors. The invention also provides a eukaryotic expression vector and a regulation method of the programmable regulation type protein targeted degradation device.

The invention discloses a tea fertilizer preparation method based on microbial fermentation, and particularly relates to the field of tea compost, tea waste is crushed and wetted, and a nitrogen source and trace elements are added to optimize the carbon nitrogen ratio, so that a foundation is laid for the fermentation process; then, selected microbial strains are proliferated and purified, and the treated waste materials are uniformly inoculated with the selected microbial strains; in the fermentation process, the stability of fermentation conditions is ensured by controlling the temperature and the humidity; the tannin concentration and the pH value are monitored in real time, when the tannin concentration exceeds a preset value and the pH deviates from a normal range, the abnormal state of tannin degradation is evaluated and identified through a reaction activity index, an interference source is positioned through a sparse principal component analysis algorithm, and noise signals are removed; and after the interference source is positioned, the fermentation condition is adjusted in a targeted manner, so that the tannin degradation efficiency reaches the expectation, and the compost is maturely fermented and meets the fertilizer use standard.

The invention discloses a method for reducing saline-alkali water into modern seawater suitable for culturing various seafoods by using microorganisms, a special fish fertilizer for the method and application of a preparation method of the special fish fertilizer, and the method comprises the following specific steps: 1, pretreating the saline-alkali water: pumping saline-alkali with the salinity of 15-30% o into a culture pond, compressing, mixing and precipitating until the pH value is 7.3-7.5; 2, performing microbial culture: performing multi-stage enrichment on halobacterium violaceum and selecting dominant colonies; the method comprises the following steps: mixing underground saline-alkali water with the salinity of 10-20% o, saline-alkali water of a salt lake with the salinity of 180-200% o and high saline-alkali soil containing part of organic matters, cooking and sealing at the temperature of 200-210 DEG C, inoculating selected mixed halobacterium purple, pumping air, culturing with sunlight, and propagating for later use, wherein the pH value is 8.3-8.5; 3, reduction reaction: carrying out reduction reaction in a static water environment, when the water body is red brown or dark brown, inoculating a heterotrophic photosynthetic bacteria liquid and an autotrophic photosynthetic bacteria liquid with concentration, inoculating yeast powder, carrying out common reaction, then inoculating a special aquaculture fish fertilizer preparation, carrying out oxygenation reaction, and adjusting the pH value to 8.5-8.8; real seafood can be cultured in saline-alkali water in deserts and gobi deserts, zero pollution and zero emission can be achieved, the cost of development, implementation and popularization is low, and the cost of 10,000 cubic meters of water is only 675 yuan.

The invention discloses a method for degrading vomitoxin in a corn deep processing process, and relates to the technical field of corn deep processing, and the method specifically comprises the following steps: obtaining temperature dynamic distribution information of corn slurry in each region, judging whether the temperature of the corn slurry in each region is too fast or too slow or not, and if yes, judging whether the temperature of the corn slurry is too fast or too slow or not; dividing each area into a temperature acceleration area, a temperature equalization area and a temperature delay area according to the judgment result; based on the division result of each area, an adjustment mechanism of heating power and time is constructed, and different temperature adjustments are respectively carried out on the temperature acceleration area, the temperature equalization area and the temperature retardation area; in the process that the adjustment mechanism adjusts the temperature of each area, whether the temperature adjustment effect of the adjustment mechanism in each area reaches the expectation or not is evaluated, and the adjustment mechanism is optimized according to the evaluation result. The problem that the temperature is not uniform in the corn slurry heating process is solved, and the effect of uniformly degrading vomitoxin is achieved.

The invention relates to the field of environmental remediation, and discloses a remediation method for high-concentration organic pollutants in soil, which comprises the following steps: firstly, injecting a nano zero-valent iron (nZVI) suspension into the contaminated soil for chemical reduction treatment, then adding sodium persulfate for oxidation treatment, and then adding a nano zero-valent iron (nZVI) suspension into the contaminated soil; the complex organic pollutants are converted into biodegradable intermediate products; then, two-stage microbial communities are introduced in sequence, the first-stage microbial community is used for degrading alcohol and ketone intermediate products, the second-stage microbial community is used for degrading organic acid intermediate products, and thorough mineralization of pollutants is achieved. According to the method, the pollutant degradation rate and the final removal effect can be remarkably improved, and the method is suitable for treatment scenes of various high-concentration organic pollutants and has high adaptability and economic benefits.

The invention relates to the field of high polymer materials, and discloses a degradable environment-friendly plastic, which comprises 20-50% of polylactic acid, 10-30% of polyhydroxyalkanoate, 5-20% of a starch-based material, 1-10% of a nano reinforcing agent, 0.5-5% of a self-repairing microcapsule, 2-10% of a bio-based plasticizer, and 0.1-3% of a natural antioxidant. Compared with an environment-friendly plastic scheme only adopting a single component of PLA or PHA in the prior art, the environment-friendly plastic disclosed by the invention adopts a composite formula comprising polylactic acid, polyhydroxyalkanoate, a starch-based material, a nano reinforcing agent, a self-repairing microcapsule, a bio-based plasticizer and a natural antioxidant; according to the present invention, the overall performance of the material is improved, and the degradation rate and the degradation process are optimized, such that the plastic material can maintain the high strength and the high toughness, and can be efficiently degraded in the natural environment so as to effectively solve the problems of incomplete degradation and insufficient mechanical property of the traditional single material.

The invention discloses a method for degrading dioxin in fly ash and stabilizing heavy metals, which comprises the following steps: carrying out water washing treatment on the fly ash, and carrying out solid-liquid separation to obtain water washing slag; mixing the washed slag with water, adding zero-valent iron and sulfite, carrying out hydrothermal treatment, and carrying out solid-liquid separation to obtain hydrothermal slag and hydrothermal liquid; according to the method for degradation of dioxin in fly ash and stabilization of heavy metal in cooperation with degradation of dioxin in fly ash, under the combined action of zero-valent iron, chlorite and a hydrothermal environment, efficient degradation of dioxin in fly ash can be rapidly achieved under the lower reaction condition, stabilization of heavy metal in fly ash can be synchronously achieved, and the method is suitable for industrial production. The method has the advantages of being low in cost, mild in reaction condition, high in treatment efficiency, good in treatment effect, environmentally friendly and the like, can effectively solve the problems existing in the prior art, provides powerful support for harmless treatment and resource utilization of the waste incineration fly ash, and has wide engineering application prospects.

The invention belongs to the technical field of friction catalysis, and particularly relates to application of an aluminum oxide substrate in friction catalytic degradation of high-concentration organic dye wastewater, an aluminum oxide ceramic chip is used as a substrate, titanium dioxide nano powder is used as a catalyst, and the aluminum oxide ceramic chip is fixed at the bottom of a flat-bottom glass beaker; the method comprises the following steps: adding organic dye wastewater, a magnetic turntable and titanium dioxide nano powder into a flat-bottomed glass beaker, then putting the flat-bottomed glass beaker in a dark environment at room temperature, stirring and reacting on a magnetic stirrer for 90-150 minutes, and after the reaction is completed, completely degrading organic dye in the wastewater. According to the method, the aluminum oxide ceramic chip is added into a system for performing friction catalytic degradation on the organic dye wastewater by using the titanium dioxide nano powder as the substrate, so that the degradation rate of the organic dye is greatly improved, the complete degradation time of the organic dye is shortened, and a new thought is provided for performing friction catalytic degradation on the organic dye wastewater by using the titanium dioxide nano powder.

The invention belongs to the technical field of functional microorganism screening and application, and particularly relates to a strain with a purine reducing function and application thereof. The lactococcus lactis AMCC 11671 (Lactococcus lactis AMCC 11671) provided by the invention is preserved in the China Center for Type Culture Collection (CCTCC), and the preservation number of the lactococcus lactis AMCC 11671 is CCTCC NO: M 2024078. The lactococcus lactis AMCC 11671 provided by the invention has good crude enzyme activity, can effectively slow down the generation and accumulation of uric acid by reducing the purine content and degrading uric acid, has good tolerance to acid and cholate, has the ability to tolerate gastrointestinal tract environment, and has potential of colonization in human gastrointestinal tracts and play roles.

The invention relates to the technical field of microorganisms, in particular to lactobacillus pentosus JX3 and application of the lactobacillus pentosus JX3. The invention provides lactobacillus pentosus JX3 which is high in acid resistance and salt resistance, capable of efficiently degrading nitrite, resistant to oxidation, high in antibacterial capacity and capable of producing acid and amino acid nitrogen. When the lactobacillus pentosus JX3 with good fermentation performance is applied to fermentation, the content of substances such as total acid and amino acid nitrogen can be increased, the oxidation resistance can be improved, the content of ester and alcohol volatile substances with fresh and fruity flavor in a fermented product can be increased, and the product quality can be improved. The edible safety is improved, the shelf life is prolonged, the nutritional value is improved, and the flavor is improved.

The invention provides aluminum-doped hematite, a preparation method of the aluminum-doped hematite and application of the aluminum-doped hematite in catalyzing peroxides to degrade organic pollutants or remove pathogenic bacteria. The preparation method of the aluminum-doped hematite comprises the following steps: adding ferric iron salt and aluminum salt into deionized water, reacting, precipitating to separate out a product, washing, drying and grinding to obtain a precursor; calcining the precursor, and then washing and drying to obtain the aluminum-doped hematite. The preparation method is simple, cheap and easily available in raw materials, low in cost, green, safe and environment-friendly; the aluminum element is introduced into the hematite, so that the catalytic activity of the hematite is improved, and the catalytic condition is easy to realize; the aluminum-doped hematite disclosed by the invention has excellent capability of activating peroxide, so that the aluminum-doped hematite shows excellent performance in the aspects of removing environmental organic pollutants and sterilizing.

The invention discloses multifunctional paenibacillus polymyxa with straw degradation, broad-spectrum bacteriostasis and efficient insecticidal activity and application, and belongs to the technical field of agricultural microbiology. The strain provided by the invention is paenibacillus polymyxa BMB-Pp0021, and the preservation number of the strain of the paenibacillus polymyxa BMB-Pp0021 is CCTCC (China Center for Type Culture Collection) NO.M20241951; the bacterial strain not only has broad-spectrum antibacterial activity, but also can efficiently kill insects, also has the capability of efficiently degrading straws, and particularly still has the capability of efficiently degrading straws (the weight loss ratio in 7 days is 50.20%) under a low-temperature condition, so that the bacterial strain has huge application potential in agriculture and industry due to the multifunctional characteristics.

The invention discloses a water area pollutant emergency treatment system and equipment in the technical field of water pollution treatment, and the system comprises a plurality of water quality monitoring modules which are used for collecting water quality factors of a covered area and generating real-time water quality data; the data collection module is used for acquiring, storing and forwarding real-time water quality data; the prediction module is used for analyzing and predicting the pollutant component evolution condition based on the real-time water quality data by using a big data model, and generating a pollutant component evolution condition graph of the water area; the emergency preprocessing scheme generation module is used for generating a corresponding preprocessing scheme and a preprocessing position based on the pollutant diffusion range diagram and the pollutant component evolution situation diagram; the biological filtration assemblies are used for being deployed at the pretreatment position and filtering and cleaning the water area. Plants aiming at specific pollutants are planted on the biological filtration assembly, and long-term ecological restoration can be achieved while water area pollutants are emergently treated.

The invention discloses a ternary chalcogenide heterojunction catalytic material as well as a synthesis method and application thereof, and belongs to the field of photocatalysts. The synthesis method comprises the following steps: dissolving ZnCl2 and InCl3. 4H2O in an ethanol water solution, stirring, adding thioacetamide into the mixed solution, continuously stirring, carrying out hydrothermal reaction, cooling, centrifuging and washing on the solution, and drying to constant weight to obtain a material Zn2In2S5; the preparation method comprises the following steps: dispersing Zn2In2S5, thiourea, 1-hexadecyl-3-methylimidazole bromide and Bi (NO3) 3.5 H2O in absolute ethyl alcohol, carrying out ultrasonic dispersion, carrying out a hydrothermal reaction on the mixture, cooling, centrifuging, washing, and drying to constant weight to obtain the powder material Zn2In2S5 / Bi19S27Br3. The photocatalytic activity is greatly improved by constructing the heterojunction, pollutant degradation is achieved, and the photocatalyst has the advantages of being good in stability and capable of being repeatedly used.

The invention provides lactobacillus fermentum as well as a compound preparation and application thereof, and relates to the technical field of microorganisms. Compared with a strain in the prior art, the lactobacillus fermentum HXJS4-1 disclosed by the invention has a better effect in the aspect of nucleoside degradation and can realize rapid nucleoside degradation. In addition, the compound has a stronger inhibition effect on xanthine oxidase, and the activity of the xanthine oxidase is effectively reduced. In mouse experiments, the strain also has an obvious uric acid reducing effect, also has a certain anti-inflammatory effect, can be used in the prevention and treatment process of hyperuricemia and gout, and provides a new probiotic or drug material for the treatment of hyperuricemia and gout. In addition, eating of the strain has no obvious influence on indexes of a sample body, and it is proved that the strain has the characteristic of high safety and can be widely applied to the fields of medicine and food.

The invention provides an aflatoxin B1 degrading enzyme as well as a preparation method and application thereof, and belongs to the technical field of agricultural biology, and a nucleotide sequence of the aflatoxin B1 degrading enzyme is shown as SEQ ID NO.1. The invention provides an aflatoxin B1 degrading enzyme as well as a preparation method and application thereof. The purpose of efficiently degrading aflatoxin B1 by using a novel degrading enzyme is achieved.

The invention discloses a BiOBr oyster shell composite photocatalyst as well as a preparation method and application thereof. The composite photocatalyst is prepared by taking oyster shell as a carrier, loading a BiOBr material on the oyster shell carrier, converting the oyster shell into an oyster shell functional material, and then adding KI and Bi (NO3) 3 by a solvothermal method to generate the BiOBr / oyster shell composite photocatalyst in situ. The BiOBr / oyster shell composite photocatalyst with visible-light response is constructed, the oyster shell serves as a carrier material, the specific surface area of BiOBr is increased, meanwhile, photon-generated carrier separation can be accelerated, the composite material is endowed with efficient photocatalytic activity and adsorbability under visible light, the efficient degradation effect on dye and antibiotic pollutants in water is achieved, and the visible-light response BiOBr / oyster shell composite photocatalyst has a good application prospect. While resource reutilization of the oyster shells is realized, the method has good practical value and potential application prospect in the fields of water purification and the like.

The invention discloses a preparation method of a Fe-doped Bi2O2CO3 / Bi4TaO8Cl composite photocatalyst as well as a product and application of the Fe-doped Bi2O2CO3 / Bi4TaO8Cl composite photocatalyst and belongs to the technical field of photocatalysis. Bi4TaO8Cl, urea and Fe3Cl. 6H2O are subjected to hydrothermal reaction to synthesize the Fe-doped Bi2O2CO3 / Bi4TaO8Cl composite photocatalyst, separation and transfer of photo-generated charges are accelerated, the carrier separation efficiency is improved, meanwhile, the visible light absorption efficiency is effectively improved through Fe doping, and the visible light absorption efficiency is improved. According to the present invention, the active free radical ROS is selectively generated, such that the ability of the photocatalytic degradation of NO to NO3 <-> is further improved while the conversion of NO to nitrogen dioxide NO2 is well inhibited, the performance is excellent, and the NO harmful gas can be efficiently degraded.

The invention belongs to the technical field of microorganisms and environmental governance and repair, and particularly relates to an ammonia nitrogen assimilation bacterium and application thereof. Specifically, research finds that the strain can metabolize ammonia nitrogen in an assimilation mode, nitrate and nitrite are not generated, nitrogen loss is not generated, and integrated removal of carbon, nitrogen and phosphorus nutrient substances can be achieved. Meanwhile, the strain has wider range of environmental adaptability, can effectively degrade ammonia nitrogen through a nitrogen assimilation approach even under the conditions of high salinity, low temperature and high ammonia nitrogen concentration, is simple to operate, low in price and environment-friendly, and shows that the nitrogen-containing wastewater is treated through the nitrogen assimilation approach, so that the nitrogen-containing wastewater treatment efficiency is greatly improved. The method not only can better recycle wastewater resources, but also has very good prospects in the aspects of environmental protection and sustainable development.

The invention relates to the technical field of fertilizers, in particular to a carbon-water biomass fertilizer and a preparation method thereof. The organic fertilizer is prepared from the following raw materials in parts by weight: 4000 to 5000 parts of solid wood sawdust, 80 to 120 parts of vegetable bran, 80 to 120 parts of wheat bran, 200 to 300 parts of cow dung, 200 to 300 parts of sheep manure, 20 to 40 parts of brown sugar, 30 to 50 parts of corn starch and 80 to 120 parts of microbial compound strains. The solid wood sawdust, vegetable bran, wheat bran, cattle and sheep manure and other agricultural byproducts are used as raw materials, decomposition of organic matters is accelerated under the action of fermentation and microbial composite strains, and the content of extractable organic carbon in soil is increased. According to the present invention, the soil structure and the soil fertility can be easily improved, the plant growth can be promoted, the resource utilization of the agricultural waste can be achieved, and the characteristics of environmental protection and sustainability are provided.

The invention discloses a PARP1 selective protein degradation agent and an application of the PARP1 selective protein degradation agent in tumor resistance. The degradation agent has the following structural formula. Wherein the 3-ethyl-7-((4-(pyridine-3-yl) piperazine-1-yl) methyl) quinoxaline-2 (1H)-ketone part is a PARP1 target protein ligand, and L is a connecting unit; and B is an E3 ubiquitin ligase ligand. The PARP1 selective protein degradation agent prepared by the preparation method disclosed by the invention can be used for effectively degrading PARP1 protein, inhibiting cell proliferation and inducing tumor cell apoptosis. Meanwhile, when the compound is combined with chemotherapeutic drugs, the effect of enhancing the chemotherapeutic effect is achieved, almost no physiological toxicity exists, and the compound is expected to provide an ideal way for improving treatment of various diseases caused by PARP1 excessive activation. # imgabs0 #

The acinetobacter Guilin is preserved in the China Center for Type Culture Collection (CCTCC), the preservation date is October 17, 2024, and the preservation number of the strain is CCTCCNO: M 20242235. The acinetobacter Guilin has the advantages that the acinetobacter Guilin can be used for degrading PBAT / PLA plastics, and the acinetobacter Guilin can be used for degrading PBAT / PLA plastics; according to the invention, effective degradation of PBAT / PLA plastic can be realized.

The invention discloses an electro-catalytic material of carbon fiber anchored bimetallic nanoparticles as well as a preparation method and application of the electro-catalytic material. The preparation method comprises the following steps: dissolving an iron source and a manganese source in an organic solvent, adding an organic polymer, and uniformly stirring to obtain a precursor solution; carrying out electrostatic spinning by using the precursor solution, pulling the organic high polymer into a jet flow shape by an electric field and solidifying, and anchoring metal in situ in a fiber precursor; and sequentially carrying out pre-oxidation and carbonization treatment on the fiber precursor to obtain the electrocatalytic material of the carbon fiber anchored bimetallic nanoparticles. The electrocatalytic material disclosed by the invention has the advantages of multiple active sites, good cycling stability, low metal leaching amount and the like. The electrocatalytic material disclosed by the invention can realize efficient electrocatalytic degradation of organic pollutants in water, and has the advantages of strong anti-interference capability, wide application range and the like.

The invention relates to a method for treating ammonia-nitrogen wastewater based on photocatalysis and ozonation coupling, and belongs to the technical field of wastewater treatment.The method comprises the following steps that S1, early-stage preparation is conducted on wastewater treatment; s2, photocatalytic ozone oxidation coupling treatment; s3, wastewater effluent treatment; s4, regeneration and recovery of the catalyst; and S5, monitoring the effluent quality of the wastewater. According to the method for treating the ammonia-nitrogen wastewater based on photocatalysis and ozonation coupling, the ammonia-nitrogen wastewater is treated by adopting the wastewater treatment method, so that the degradation efficiency of ammonia nitrogen can be effectively improved, and ammonia nitrogen components in the wastewater can be more effectively removed; in the photocatalytic reaction process, pollutants are decomposed into harmless substances, so that the problem of secondary pollution is avoided; in the ozone oxidation process, ozone can be quickly decomposed, the influence on follow-up treatment facilities is reduced, meanwhile, light energy is utilized in the photocatalytic reaction, the advantages of energy conservation and environmental protection are achieved, and the advantages of efficient degradation, no secondary pollution, energy conservation and environmental protection are achieved.

The invention discloses a Fenton-like catalytic system and application thereof in degradation of acetaminophen, and belongs to the technical field of water treatment. The Fenton-like catalytic system is prepared from MXene and H2O2 (hydrogen peroxide). The MXene with nano-scale thickness and submicron or micron-scale transverse size is used as a catalyst, H2O2 is coupled to provide a Fenton-like catalytic system, a larger specific surface area and a larger reaction site are achieved, a Fenton-like catalytic reaction with highly oxyphilic single vacancy or vacancy cluster defects left in an etching reaction of H2O2 and MXene can be brought into full play, and the reaction efficiency is improved. The method has the advantages that the defect sites are accelerated to form oxidation clusters by hydrolyzing or extracting oxygen, the Fenton-like catalytic reaction of H2O2 is facilitated, the acetaminophen can be effectively degraded in the presence or absence of light, and the treatment requirement of the acetaminophen-containing sewage is met.

The invention discloses a method for degrading micro-plastics by using a composite semiconductor photocatalyst, and relates to the field of environmental protection, in the preparation process, transition metal copper powder and semiconductor material titanium dioxide are firstly mixed and dispersed in absolute ethyl alcohol, so that the copper powder and the titanium dioxide can be ensured to be fully and uniformly mixed together; and filtering, drying and calcining together to obtain the copper oxide and titanium dioxide composite semiconductor material. The defect that titanium dioxide is low in response to visible light is effectively overcome, electron-hole separation is promoted, the electron-hole mobility is improved, the catalyst convenient to prepare is provided for photocatalytic degradation of micro-plastics at normal temperature and normal pressure, and the method has the advantages of being simple in process, low in price, mild in reaction condition and the like.

The invention discloses a Cu2WS4-CuBi2O4 composite material with a photothermal effect and a preparation method and application thereof.The Cu2WS4-CuBi2O4 composite material is supported by CuBi2O4 of a rod-shaped structure, flaky Cu2WS4 is loaded on the surface of the rod-shaped CuBi2O4 through the interface regulation and control effect of a surfactant by adopting a hydrothermal method, and a Z-type heterojunction with the photothermal effect is formed; in an antibiotic degradation system, the Cu2WS4-CuBi2O4 composite material shows good photocatalytic performance and degradation effect under the synergistic effect of a photothermal effect and a PDS advanced oxidation process. The device is simple to prepare, stable in structure, high in repeatability and free of secondary pollution, and can meet laboratory and industrial requirements.

The invention discloses a preparation method and application of a nano zero-valent iron-zeolite core-shell structure composite material, and relates to the technical field of nano zero-valent iron composite material preparation. A layer of zeolite core-shell structure is generated on the surface of the nano zero-valent iron to prevent iron oxide from being generated on the surface of nZVI to reduce the reaction activity, and meanwhile, the mass ratio of zeolite / zero-valent iron strongly affects gradual release of Fe < 2 + > in the nano zero-valent iron-zeolite core-shell structure composite material, so that iron core oxidation is slowed down, and the reaction activity of nZVI is improved. The release speed of electrons is also slowed down, the gradually released electrons form a long-time and stable activation effect on persulfate, and the degradation of trichlorophenol can be promoted. According to the preparation method and application of the nano zero-valent iron-zeolite core-shell structure composite material, the nano zero-valent iron-zeolite core-shell structure composite material can be obtained.

The invention discloses a mechanochemical grinding method for efficiently degrading PFAS, which comprises the following steps: adopting B4C as a ball milling aid, putting B4C and PFAS into a ball mill according to a mass ratio of (250-1000): 50, and grinding until B-C bonds in B4C are broken, C-F bonds in PFAS are broken and B-F bonds are formed, thereby completing the degradation of PFAS; according to the method, the grinding process is improved through B4C, free electrons can be generated in the grinding treatment process, then PFAS is degraded, and the method has the advantages of being low in cost, high in efficiency and free of secondary pollution.

The invention provides a defective catalyst as well as a preparation method and application thereof. The defective catalyst comprises a defective titanium dioxide carrier and a metal oxide active center loaded on the defective titanium dioxide carrier, the metal oxide active center comprises silver oxide; the defect catalyst has high specific surface area and high catalytic activity and can be used for catalytically degrading N-VOCs and cooperatively producing NH3, the conversion rate of N-VOCs is preferably up to 98.0% or above, and meanwhile, the yield of NH3 is preferably up to 100%; the efficient degradation of the N-VOCs and the green resource utilization of the nitrogen resource of the N-VOCs are realized.