191 results about "Perfluoro compound" patented technology

The invention provides a soybean protein nanoparticle coagulant for removing perfluorinated compounds in water as well as a preparation method and application thereof. The preparation method comprises the following steps: firstly, preparing N, N-dimethyl hexadecylamine and epoxy chloropropane into a reaction precursor, namely epoxy propyl hexadecyl dimethyl ammonium chloride; meanwhile, hydrolyzing the soybean protein isolate by using protease to obtain a hydrolyzed soybean protein solution; enabling the epoxy group on the epoxy propyl hexadecyl dimethyl ammonium chloride and the amino group on the hydrolyzed soybean protein to be subjected to ring-opening addition reaction so as to be grafted to the hydrolyzed soybean protein, and adding acetone to generate precipitate after the reaction is finished; and collecting the precipitate, washing and drying to obtain the soybean protein nanoparticle coagulant for removing the perfluorinated compounds in the water. The soybean protein nanoparticle coagulant prepared by the invention utilizes strong electrostatic interaction and hydrophobic interaction, the removal capacity and selectivity of the soybean protein nanoparticle coagulant on PFAS are far higher than those of a traditional coagulant, and the soybean protein nanoparticle coagulant has excellent removal efficiency and remarkable anti-interference capability.

The invention discloses a perfluorinated compound adsorption material and a preparation method thereof. Comprising the following steps: 1) placing moso bamboo in a high-temperature carbonization furnace for carbonization treatment, after carbonization is completed, taking out bamboo charcoal, carrying out acid treatment to remove surface impurities and part of ash, then repeatedly washing the bamboo charcoal with deionized water until the bamboo charcoal is neutral, and finally drying the bamboo charcoal to obtain pretreated bamboo charcoal; and 2) putting the pretreated bamboo charcoal into a chitosan acetic acid solution to load chitosan on the surface of the bamboo charcoal, repeatedly washing the bamboo charcoal with deionized water to remove unloaded chitosan, and then drying to obtain the perfluorinated compound adsorption material. The prepared adsorption material has high adsorption capacity and selectivity on perfluorinated compounds, the adsorption performance of the adsorption material on the perfluorinated compounds is improved by modifying the bamboo charcoal, and the adsorption capacities of the adsorption material on perfluorooctanoic acid and perfluorooctane sulfonic acid can reach 400 mg / g and 450 mg / g respectively.

The invention discloses a protein-based adsorbent capable of efficiently adsorbing perfluorinated compounds and application of the protein-based adsorbent. The adsorbent is obtained by coating polyethyleneimine in a phase transition aggregate formed by unfolding protein through a disulfide bond reducing agent. The use method of the adsorbent comprises the step of feeding the adsorbent into a solution containing the perfluorinated compound to realize efficient adsorption of the perfluorinated compound. The adsorbent has the advantages of being low in cost, efficient, easy to operate, environmentally friendly, free of secondary pollution, good in biocompatibility and the like, efficient selective adsorption of perfluorinated compounds can be achieved through the adsorbent, the adsorbent can be repeatedly used, and industrial application and popularization are easy.

This invention discloses a Fe-GC@Fe 0 This invention relates to catalysts, their preparation methods, and applications, belonging to the field of water treatment technology. The preparation method of this invention is simple, requires minimal equipment, and yields Fe-GC@Fe catalysts. 0 The catalyst can drive microorganisms in water to metabolize perfluorinated compounds. Under conditions without external energy input, it can effectively remove perfluorinated compounds such as perfluorooctanoic acid, perfluorooctane sulfonic acid, perfluorononanoic acid, and perfluorohexane sulfonic acid from water. The removal rate and defluorination rate both reach more than 80%. Moreover, it is a solid catalyst, which is easy to separate from water, recycle and reuse, and maintain a high removal effect.

The invention relates to a method for detecting perfluorinated compounds in water, which comprises the following steps: carrying out solid-liquid separation on a water sample to prepare a liquid to be detected; carrying out on-line solid phase extraction-liquid chromatography-mass spectrometry detection on the to-be-detected liquid, and calculating the content of the perfluorinated compounds in the to-be-detected liquid by an internal standard method. The detection method is high in automation degree, simple and rapid to operate and capable of accurately detecting the perfluorinated compounds in the water.

The invention discloses a preparation method and application of an aminated MIL-101 (Cr) material for enhancing adsorption of perfluorinated compounds, relates to the technical field of metal organic framework materials, and aims to enhance the adsorption effect of the aminated MIL-101 (Cr) material on the perfluorinated compounds. The preparation method comprises the following steps: taking MIL-101 (Cr) as a skeleton raw material and tris (2-aminoethyl) amine as an amination raw material, and then synthesizing and modifying to prepare the MIL-101 (Cr)-TAEA, the average pore size of which can be more than 7 times of that of the MIL-101 (Cr); the MIL-101 (Cr)-TAEA can be applied to removal of perfluorinated compounds in water, and after four times of cyclic regeneration, the total removal rate of PFASs is reduced by less than 5% compared with that of first adsorption; the preparation steps are simple and easy to operate, the raw materials are easy to obtain, the preparation cost is low, the average pore size of the prepared aminated MIL-101 (Cr) material is greatly increased, the flexibility of the material is enhanced, the adsorption performance on perfluorinated compounds is good, the saturation adsorption capacity is high, and the cyclic regeneration performance of the material is excellent.

The invention discloses a synergistic advanced treatment system and method for perfluorinated compounds and conventional pollutants in dyeing and finishing wastewater, and the method comprises the following steps: firstly, the dyeing and finishing wastewater passes through a reaction tank filled with an adsorbent, so that the perfluorinated compounds and the conventional pollutants are adsorbed and enriched to obtain effluent which can meet the wastewater discharge standard; introducing a desorption agent into the adsorbent which is saturated by adsorption to obtain a high-concentration desorption solution which is rich in perfluorinated compounds and conventional pollutants, and carrying out oxidation reaction on the high-concentration desorption solution under a subcritical condition to thoroughly degrade organic matters, according to the process, adsorption enrichment and subcritical water oxidation ultimate treatment are innovatively coupled through a desorption link, the fundamental defects that treatment of low-concentration wastewater through subcritical water oxidation is not economical and only pollutants are transferred but not thoroughly eliminated in an adsorption technology are overcome, and meanwhile efficient integration of materials and energy is achieved.

The invention discloses a Fe-GL-Fe < 0 > catalyst and a preparation method and application thereof, and belongs to the technical field of water treatment. The preparation method is simple, the requirement for equipment is low, the prepared Fe-GL-Fe < 0 > catalyst can effectively remove perfluorinated compounds such as perfluorooctanoic acid, perfluorooctane sulfonic acid, perfluorononanoic acid and perfluorooctane sulfonic acid in water under the environment atmosphere condition without external energy input, and the removal rate and the defluorination rate are both larger than 95%; the catalyst belongs to a solid catalyst, is convenient to separate from water, is recycled, keeps a high removal effect, and is low in metal ion dissolution rate.

The invention provides application of a modified adsorption material in removal of perfluorinated compounds and a preparation method of the modified adsorption material. According to the method, the to-be-treated water body containing the perfluorinated compound is mixed with the modified adsorption material, and the obtained mixed to-be-treated water body is treated by regulating and controlling reaction conditions, so that PFAS is removed, and the purified water body is obtained. The method disclosed by the invention is a process for treating PFAS based on layered bimetallic hydroxide efficient adsorption, and the method is relatively low in energy consumption and relatively low in process treatment cost; wherein the layered bimetal hydroxide material is a modified layered bimetal hydroxide material, the PFAS treatment capacity is remarkably improved, and the layered bimetal hydroxide material has a good application prospect in the field of wastewater treatment.

The invention relates to the technical field of environmental remediation, in particular to an in-situ soil perfluorinated compound remediation method and system.The method comprises the following steps that electrochemical targeted enrichment is conducted, applying a pulse type direct-current electric field to the anode and the cathode to drive anionic PFAS in the soil to migrate and enrich towards an anode area; in the anode area, the temperature of anode soil is increased, composite peroxide and a chemical activator are continuously injected, and perfluorinated compounds enriched in the anode are oxidized and degraded; and microbial polishing and ecological restoration: stopping the electric field, carrying out post-treatment on the anode region, adding a microbial agent and a nutritional agent into the anode region, and carrying out biodegradation on residual perfluorinated compounds or degradation intermediate products thereof. Through systematic design of physical field guidance, targeted energy injection, multiple catalytic oxidation and ecological function reconstruction, in-situ soil treatment is achieved, and the core problem in PFAS in-situ remediation is precisely solved.

The invention belongs to the field of electroanalytical chemistry / electrochemical sensors, and discloses preparation and application of a molecularly imprinted sensitive membrane modified electrode for perfluorooctane sulfonic acid detection. According to the method, aniline and o-fluoroaniline are selected as bifunctional monomers, PFOS is taken as a template molecule, in-situ electropolymerization is carried out through cyclic voltammetry, and the molecularly imprinted sensitive membrane capable of specifically recognizing PFOS is obtained. According to the invention, o-fluoroaniline is introduced and is combined with a fluorocarbon chain of PFOS through F-F interaction, and due to the existence of fluorine atoms, non-specific combination can be reduced, so that the anti-interference capability of the molecularly imprinted sensitive membrane is stronger, and the selective limitation on a perfluorinated compound composed of a sulfonic acid group and the fluorocarbon chain is reduced; according to the invention, aniline is used as another functional monomer, so that the conductivity can be improved, and the aniline and o-fluoroaniline can be doped and electrically polymerized to form fluorinated polyaniline. And the chemical property of the fluorinated polyaniline is relatively stable, so that the stability of the eluted molecularly imprinted cavity is relatively high.

The invention relates to a method for improving resistance of a denitrification strain to a new pollutant perfluorinated compound, and belongs to the field of biological denitrification of sewage. The method comprises the following steps: under an aerobic condition, culturing a denitrification strain by using a sterilized TSB culture medium to obtain OD600 = 1.8; resuspending with a sterile PBS buffer solution to obtain a bacterial suspension; (2) preparing a synchronous nitrification and denitrification culture medium, and sterilizing for later use; (3) respectively adding a perfluorinated compound into the synchronous nitrification and denitrification culture medium, and respectively inoculating the bacterial suspension in the step (1) into the synchronous nitrification and denitrification culture medium containing the perfluorinated compound according to the inoculum size of 1% (v / v); and (4) placing the inoculated synchronous nitrification and denitrification culture medium in an aerobic environment, culturing for 2 hours in a shaking table at the temperature of 30 DEG C and the rotating speed of 150rpm, and carrying out weak ultrasonic treatment on the strain by using an ultrasonic generator. According to the method, the denitrification strain is treated by weak ultrasound, so that the inhibition effect of the perfluorinated compound on the denitrification strain is slowed down, and the resistance of the denitrification strain on the perfluorinated compound is improved.

The invention relates to the technical field of environmental analysis and testing, and discloses a method for detecting perfluorinated compounds in soil, which comprises the following steps: (1) crushing and sieving a soil sample to be detected, then carrying out pressurized fluid extraction, carrying out rotary evaporation concentration on the obtained extract, and dissolving with methanol again to obtain a concentrated solution; (2) purifying the concentrated solution through a solid-phase extraction column, and then concentrating to a constant volume to obtain a to-be-detected solution; (3) detecting the type and the content of the perfluorinated compounds in the to-be-detected liquid by adopting a liquid chromatography-tandem mass spectrometry method; wherein in the step (1), an extracting solvent is a NaOH methanol solution; in the step (3), in the liquid chromatography-tandem mass spectrometry, the liquid chromatographic condition is as follows: a liquid chromatographic column is a C18 chromatographic column. The detection method provided by the invention is simple to operate, high in accuracy, good in repeatability, capable of analyzing multiple PFAS types (17 types) and low in detection limit, meets the analysis requirements, and can be used for analyzing and monitoring common PFAS in soil.

A method for obtaining the detection limit of 23 perfluorinated compounds in water relates to the technical field of pollutant detection, and comprises the following steps: step S1, taking a sufficient amount of a water sample and placing the water sample in a fluoride-free volumetric flask to obtain a water sample containing methanol; s2, preparing a water quality sample to be detected; s3, detecting the water quality sample to be detected by adopting a high performance liquid chromatography tandem mass spectrometer; s4, setting an elution program of a mobile phase; and S5, testing, and calculating the concentrations of 23 perfluorinated compounds in the water quality sample to be detected. According to the method, the detection limits of 23 perfluorinated compounds in water are obtained by utilizing a liquid chromatography-triple quadrupole mass spectrometer and adopting an online solid-phase extraction method, so that the detection efficiency is improved, the personal error is reduced, and the consumption of an organic solvent and the use of a traditional solid-phase extraction column are reduced.

The present application provides a method for treating perfluorinated compound-containing wastewater rapidly. The method comprises the steps of: preparing an oxy-chloride iron adsorbent by pyrolyzing a raw material of ferric chloride; and treating the perfluorinated compound-containing wastewater by one of the following processes: (i) a batch adsorption process: adding the oxy-chloride iron into the perfluorinated compound-containing wastewater, then constant temperature oscillation, and filtration; or (ii) a dynamic adsorption process: flowing the perfluorinated compound-containing wastewater through an adsorption column filled with the oxy-chloride iron adsorbent, to complete the treatment of the perfluorinated compound-containing wastewater. The present application constructs an intrinsic interface micro-electric field on the surface of the oxy-chloride iron, which significantly accelerates the adsorption kinetics of the perfluorinated compound. The method of the present application is suitable for both batch and dynamic adsorption processes, and exhibits excellent adsorption performance in treating perfluorinated compounds, can reach adsorption equilibrium in 10 minutes, the dynamic adsorption rate is 4.3-6.5 times that of commercial adsorbents, and is easy to regenerate with anti-interference, and has a broad application prospect.

The application discloses a dispersion type light atomization device suitable for deep removal of perfluorinated compounds in tail water of a sewage plant and a use method, and the device comprises a reactor main body, an ultraviolet lamp group and an external system. The inner wall of the reactor main body is an aluminum film mirror surface with a protective layer; the top is provided with a rotary three-nozzle atomization nozzle; the top is provided with an air outlet pipe; the side of the main body is provided with an air inlet; the bottom is provided with a water tank, and the water tank is provided with a condensing system and a water outlet pipe below. The ultraviolet lamp group has two groups of upper and lower lamps, each group has three lamp tubes with a main wavelength of 185 nm and three lamp tubes with a main wavelength of 254 nm, and the lamp tubes are distributed at intervals, and an air stirrer is located on both sides of the lamp tubes; the two groups of lamp tubes are provided with a funnel-shaped reflection buffer. The external system has an atomization system and an air system. The application utilizes atomization and ultraviolet irradiation to manufacture a micro-ozone environment, so that the flow state operation is used to improve the ozone yield and the mass transfer efficiency of the ozone, the ozone manufacturing cost is reduced, the utilization rate of the ozone is improved, the removal rate of the perfluorinated compounds is enhanced, and the device has the advantages of small occupation area and convenient use.

The invention relates to an efficient synergistic treatment method for perfluorinated compounds and bisphenol compounds in water, which comprises the following steps: mixing aluminum salt and divalent metal salt according to a certain proportion, and heating and coprecipitating under an alkaline condition to obtain layered double hydroxides (LDH); adding the synthesized LDH into sewage containing a perfluorinated compound and a bisphenol compound in sequence, or directly adding the synthesized LDH into the sewage containing the perfluorinated compound and the bisphenol compound at the same time, and adjusting the sewage to be alkaline so as to complete adsorption of the perfluorinated compound and the bisphenol compound; the ultraviolet lamp is adopted to irradiate and adsorb LDH of two pollutants at the same time, so that the LDH is efficiently and synergistically degraded. According to the invention, perfluorinated compounds and bisphenol compounds in water can be rapidly removed, and in-situ or ex-situ synergistic degradation of the two pollutants can be realized under the condition that an oxidizing agent or a reducing agent is not additionally added.

The invention relates to a bioelectrochemical method for efficiently removing fluorine and degrading perfluorinated compounds and application of the bioelectrochemical method, and belongs to the technical field of pollutant treatment. According to the method disclosed by the invention, the sulfate reducing flora (SRB) which takes Clostridiumsensuricto as a main dominant bacterium (the relative abundance is 46.06%) is enriched. The SRB rapidly grows on the surface of the cathode by using electrons provided by the cathode, and ferrous sulfide with conductivity is synthesized on the surface of the cathode, so that the resistance is further reduced, and electron transfer between the SRB and the cathode is promoted. The reacted cathode forms a biological membrane with Tissierella (the relative abundance is 41.32%) as a main dominant bacterium, and compared with an electrochemical method without a biological membrane, the bioelectrochemical method has the advantage that the degradation rate and the defluorination rate of perfluorinated compounds are remarkably improved. In addition, by optimizing the composition of the electrolyte, the degradation rate and the defluorination rate can be further improved, and the defluorination rate can reach 90% or above.

The invention discloses a method for evaluating the ecological risk of a perfluorinated compound based on the chlorophyll concentration of microalgae, which comprises the following steps: collecting a water body of a region to be evaluated, detecting the concentration of the perfluorinated compound in the water body, and obtaining a localized microalgae culture system at the same time; adding perfluorinated compound solutions with different concentrations into the localized microalgae culture system to form an experimental group, and setting a blank group without perfluorinated compounds; sampling and detecting the chlorophyll concentration of the microalgae in the experimental group and the blank group, and calculating the chlorophyll inhibition ratio of the microalgae; calculating the half effect concentration according to the function relationship between the concentration of the perfluorinated compound and the chlorophyll inhibition ratio of the microalgae; according to the concentration and the half effect concentration of the perfluorinated compounds in the water body, calculating to obtain a risk quotient for judging and evaluating the ecological risk of the perfluorinated compounds in the water body. According to the method, the half effect concentration, the mixed exposure effect and the risk quotient value are integrated to serve as ecological risk composite criteria, and the method has the advantages of being high in environmental correlation, high in sensitivity and high in indication performance.

The invention discloses a method for detecting perfluorinated compounds by using a sensor array composed of dyes, comprising the following steps: S1, preparing a fluorescent dye solution: preparing a fluorescein diluent, a coumarin 7 diluent, and a cyanine diluent; S2, preparing a pollutant solution: preparing diluted PFBA solution, PFOA solution, PFDA solution, PFUdA solution, and PFDoA solution; S3, constructing a fluorescent sensor array and detecting perfluorinated compounds: placing a sample in a fluorescence spectrometer for detection. The dyes used in the detection method of the invention are easy to obtain and have strong fluorescence stability. The sensor array can detect perfluorinated compounds with similar structures, and the operation is simple.

The present application relates to the technical field of environmental monitoring and pollution tracing, and discloses a basin-scale perfluorinated compound tracing method and system based on artificial intelligence, which integrates multi-source data in a basin to construct a unified spatial and temporal granularity basin multi-source data cube, identifies perfluorinated compound structures through a virtual spectrum diagram enhanced deep learning model, simulates pollutant spatial and temporal concentration distribution by combining a graph neural network of a physical mechanism, and then inversely propagates and matches source characteristic fingerprints to invert potential emission source contribution, outputs a pollution source contribution heat map and a priority control enterprise list, solves the core problems of difficulty in joint analysis of multi-source data, difficulty in identification of unknown compounds and difficulty in quantitative determination of multi-source superposition contribution in basin-scale perfluorinated compound tracing, and provides support for precise pollution control.

A method for mineralizing a perfluorinated compound by using a molten alkali is provided. The method includes the following steps: mixing NaOH and KOH to obtain a mixed alkali, and heating the mixed alkali to a temperature of 150° C. to 300° C. to a molten state obtain a molten alkali; adding the perfluorinated compound to the molten alkali to obtain a molten reaction system, and holding the molten reaction system at the temperature of 150° C. to 300° C.; and subjecting the molten reaction system to reaction for 15 min to 60 min to mineralizing the perfluorinated compound.

The invention discloses an application method of a three-dimensional spherical covalent organic framework material in determination of perfluorinated compounds in infant milk powder, and belongs to the technical field of detection of pollutants in special infant food. According to the method, a TDS-COFs material is synthesized and prepared based on 1, 3, 5-tri (4-aminophenyl) benzene and 2, 5-divinyl terephthalaldehyde as aptamers to serve as an adsorbent, electrostatic and hydrophobic interaction is mainly utilized, meanwhile, a porous structure provides a plurality of sites, enrichment of perfluorinated compounds is achieved, and the adsorption capacity of the perfluorinated compounds is improved. And the method is combined with HPLC-MS / MS for determining and analyzing the perfluorinated compound residues in the infant milk powder. The method has the advantages of simplicity in operation, low adsorbent dosage, low cost, high detection sensitivity, good accuracy, good reproducibility and practical application value, and provides a new technical support for monitoring the safety of the perfluorinated compounds in the infant milk powder.

A catalyst for perfluorinated compound decomposition includes a first catalyst which includes an aluminum oxide, and a second catalyst which includes at least one oxide selected from the group consisting of Zr, Ce and Ga, wherein a ratio of a weight of the second catalyst to a total weight of the first catalyst is 0.02 to 0.3. The lifespan characteristics and initial activity of the catalyst for perfluorinated compound decomposition may be improved.

The invention belongs to the technical field of environmental microorganisms, and particularly relates to a method for culturing a perfluorinated compound tolerant anaerobic ammonium oxidation flora and application of the method, the obtained anaerobic ammonium oxidation flora can tolerate impact of 1 ng / L-100 mg / L of perfluorinated compounds, the concentration is far higher than that of the perfluorinated compounds existing in sewage at present, and the perfluorinated compounds can tolerate the impact of 1 ng / L-100 mg / L of the anaerobic ammonium oxidation flora. And in the presence of a high-concentration perfluorinated compound, the total nitrogen removal rate of 85% or above can still be maintained, so that the problem of perfluorinated compound stress possibly faced by the anaerobic ammonia oxidation process in the application process is completely solved. In addition, the method is simple and easy to implement, the concentration of the perfluorinated compound is increased in a gradient mode, sludge discharging and low-temperature-starvation stimulation means are combined, and the cost is low; the cultured anaerobic ammonium oxidation flora not only can be used for treating sewage, but also can be used for repairing river sediment polluted by perfluorinated compounds.

The invention provides a perfluorinated compound specific detection kit based on an up-conversion sensor. The perfluorinated compound specific detection kit comprises a gold nano material modified by polyethylene glycol-mercaptan and perfluoroalkyl mercaptan and an up-conversion nano material modified by polyethyleneimine, the gold nano material modified by polyethylene glycol-mercaptan and perfluoroalkyl mercaptan is obtained by combining polyethylene glycol-mercaptan and perfluoroalkyl mercaptan with gold nano particles by forming a gold-sulfur bond, the polyethyleneimine modified up-conversion nano material is obtained by directly crosslinking polyethyleneimine on the surface of an up-conversion nano material through a one-step hydrothermal synthesis method. When in use, the gold nano-material modified by polyethylene glycol-mercaptan and perfluoroalkyl mercaptan and the up-conversion nano-material modified by polyethyleneimine are mixed under an acidic condition and then are used for detecting perfluorinated compounds, so that high-sensitivity specific detection of the perfluorinated compounds can be realized.

The present invention discloses a method for defluorinating perfluorocompounds using a layered bimetallic oxide or hydroxide, and belongs to the technical field of defluorination methods. The method for defluorinating perfluorocompounds using a layered bimetallic oxide comprises adding the layered bimetallic oxide to a solution of the perfluorocompound and performing a hydrothermal reaction at 160°C to 220°C for 30 to 120 minutes. The defluorination method of the present invention has excellent perfluorocompound defluorination effects, mild processing conditions, and a simple processing process, while eliminating complex post-processing steps.

An exhaust gas treatment system for a semiconductor process according to the present invention comprises: a reactor main body which is a cylinder having an open upper part; a duct which is provided in the internal space of the reactor main body, and which forms a plurality of openings while the upper side and the lower side are open; a block heater which is inserted into a first opening, which is close to the inner wall of the reactor main body, among the plurality of openings, and which thermally degrades a non-degradable gas of a perfluorinated compound, which has moved into the inner space of the reactor main body, through a second opening, which is closer to the center side of the duct than the first opening, while combusting a combustion gas; a catalyst layer comprising a catalyst for treating the refractory gas in the internal space of the reactor main body when the refractory gas is discharged from the reactor main body through a third opening closer to the center side of the duct than the second opening; and a powder trap and a purge device which are provided on the lower side of the reactor main body, and which inject compressed pulse gas to the catalyst layer provided on the upper side so as to face each other, thereby impinging the catalyst. Therefore, after powder which is generated by thermal degradation of the refractory gas and deposited on the catalyst is separated from the catalyst, the powder is discharged from the reactor main body through the third opening.

The application relates to the technical field of wastewater treatment, in particular to a preparation method of a porous medium plate, a plasma device and a wastewater treatment equipment. The application dips an aluminum oxide plate into a first sol containing silicon dioxide to obtain an aluminum oxide plate loaded with a silicon dioxide coating. The silicon dioxide coating has a large specific surface area and hydroxyl groups exist on the coating surface, the hydroxyl groups can be combined with or adsorbed by low-lifetime active substances, the retention time of the low-lifetime active substances is prolonged, and the concentration and utilization rate of the low-lifetime active substances are improved. Due to the existence of the hydroxyl groups and the large specific surface area of the silicon dioxide coating, the silicon dioxide coating has strong adsorption capacity, so that the active substances adsorbed on the surface of the medium plate are increased, and then the reaction rate of the active substances and perfluorinated compounds is improved, so that the perfluorinated compounds are more completely degraded. The silicon dioxide has good dielectric properties, can enhance the dielectric constant and resistivity of the medium plate, and plays a positive role in the generation and transmission of the plasma.

The present invention pertains to: a functionalized thermoplastic polyurethane containing a novel chain extender having functionality capable of chemically bonding to a prepolymer polymerized by reacting a polyol (P) with a diisocyanate (R); a functional composite material containing one or more monomers or polymers selected from the group consisting of an anionic functional group, an amphoteric functional group, a perfluorinated compound, a hydrogel, and a silicone polymer; a method for producing same; and an article including same.