70 results about "Chloric acid" patented technology

The invention discloses an anti-drip device for hypochlorous acid disinfectant filling, comprising: a liquid discharge pipe, the liquid discharge pipe comprising a liquid inlet part and a liquid discharge part, the liquid inlet part being used for connecting an external chlorous acid disinfectant supply device, and the liquid discharge part being used for discharging a hypochlorous acid disinfectant; the valve element is arranged in the liquid discharging pipe in a matched mode, and the valve element can block one end of the liquid inlet part; the hollow valve rod is arranged on the valve element, and the hollow valve rod is connected with an external pressure air source through a hose; the driving mechanism is used for driving the hollow valve rod to move; wherein a first control valve is arranged on the hollow valve rod; an air guide groove is formed in the valve element, and the hollow valve rod is communicated with the air guide groove; a plurality of first air guide channels are evenly distributed in the valve element and communicate with the air guide groove. The anti-dripping device is good in anti-dripping effect, and waste of hypochlorous acid disinfectants can be reduced.

A quantitative detection method of thallium content in converter graphite ball, steps include: 1) the pretreatment of converter graphite ball; 2) the preparation of standard solution series; 3) the detection of thallium content in converter graphite ball.The application finds that the suitable pretreatment method of converter graphite ball is carbon removal by burning, and then high-chloric acid and dilute nitric acid are used to dissolve salt, by which the converter graphite ball can be completely dissolved, thereby the stability of quantitative determination of thallium content in converter graphite ball is improved, the pretreatment method is simple, fast and operable; the method is suitable for the quantitative detection of thallium content in converter graphite ball with thallium content not less than 0.0062 μg / L, the recovery rate of thallium is as high as 99.1%, the analysis accuracy is high, the detection lower limit is as low as ppb level, the sensitivity is high, and the method has the advantages of simple operation, simple analysis condition and low labor intensity.Therefore, the application has significant economic benefits and the advantages of simplicity and economy.

The invention relates to the field of glass detection, and particularly discloses a method for testing the content ratio of ferrous iron to ferric iron in glass. The method specifically comprises the following steps: washing a to-be-detected glass sample, grinding into micro powder, drying, respectively taking the same amount of glass micro powder, and marking as a sample 1 and a sample 2; divalent iron can be converted into ferric iron by adding perchloric acid into the sample 1, and the test result is the content of total iron in the glass. And dimethyl silicone oil is added into the sample 2 so as to isolate air and prevent ferrous iron from being oxidized into ferric iron in the testing process to influence the experiment result. According to the method, the proportion of Fe < 2 + > to Fe < 3 + > in an unknown glass sample can be simply and quickly obtained, the result is accurate and reliable, the test period is short, and the working efficiency is greatly improved.

The invention discloses an electric power oil washing device and an electric power oil purification treatment system and method. The electric power oil washing device comprises a washing oil tank, a circulating spraying unit, a waste liquid discharging unit and a first oil liquid discharging unit. The washing oil tank is used for inputting and accommodating oil and water for electric power to be treated; the first end of the circulating spraying unit is connected with the side part and / or the bottom of the washing oil tank, the second end of the circulating spraying unit is connected with the top of the washing oil tank, and the circulating spraying unit is used for conveying a mixed solution of to-be-treated electric oil and water to the top of the washing oil tank and spraying downwards; the waste liquid discharging unit is arranged at the bottom of the washing oil tank; and the first oil liquid discharging unit is arranged at the bottom of the washing oil tank. According to the invention, the distribution and precipitation characteristics of chlorine, pickling substances and oil sludge and the characteristic that additives in oil are insoluble in water are utilized, water is used for dissolution, the problem that chlorine cannot be effectively removed is solved, most acidic substances and part of oil sludge are removed by means of water, the cost is reduced, and the problem of secondary pollution in the treatment process is avoided.

The invention relates to a novel method for synthesizing dichloropyridazinone, which is characterized in that the pyridazinone is generated through the reaction of tert-butylhydrazine and furfuryl acid under the condition of a non-water-soluble organic solvent by changing the initial raw materials of the reaction, the reaction product acetic acid can be recycled, and the reaction solvent and the subsequent synthesis of pyridaben are the same solvent, so that the desolvation process and the crystallization process are omitted, and the yield is improved. The method avoids high-temperature decomposition of a heat-sensitive material intermediate dichloropyridazinone, greatly improves the production field environment, effectively improves the comprehensive yield of a finished product, and is more suitable for industrial production.

The invention relates to the field of heavy metal adsorbents, in particular to a preparation method of a coal-based heavy metal adsorbent, which comprises the following steps: S1, crushing and pickling coal to obtain coal particles; s2, the coal particles and a manganese salt solution are subjected to mixed dipping, drying and pyrolysis, and a pyrolysis product is obtained; s3, adding an adhesive into the pyrolysis product to obtain coal agglomerated particles, namely the coal-based adsorbent; the manganese salt solution is at least one of manganese nitrate and manganese chlorate. According to the method, the coal is subjected to crushing and acid pickling to enlarge the adsorption area of the coal, then the coal is mixed with the manganese salt solution for dipping and pyrolysis, manganese oxide generated by manganese salt decomposition can be dispersed in coal particles in a nano-particle form, and then the binding agent, the heavy metal adsorbent and the cross-linking agent are added, so that the adsorption efficiency is further improved; therefore, the coal-based heavy metal adsorbent with excellent adsorption efficiency is prepared.

To provide a method for manufacturing a new germicidal disinfectant from sodium hypochlorite degraded during storage.SOLUTION: A method for manufacturing a new germicidal disinfectant from a solution including hypochlorite ion, chloric ion, and chloride ion, includes: a first reaction process of adding sulfuric acid to the solution and generating chlorine gas; a process of reacting the chlorine gas generated in a recovery liquid A with sodium hydroxide or calcium hydroxide and recovering it as hypochlorite ion; a second reaction process of adding sulfuric acid having higher concentration than that in the first reaction process to a reaction mother liquid after the first reaction process and generating chlorine dioxide gas; a process of reacting the generated chlorine dioxide gas with sodium hydroxide and hydrogen peroxide in a recovery liquid B and recovering it as chlorous acid ion; and a process of blending the recovery liquid A with the recovery liquid B to obtain the new germicidal disinfectant.SELECTED DRAWING: None

To provide a method for producing an aqueous solution containing chlorous acid to be used as a disinfectant, by generating chlorous acid which is safe to the human body as a preprocessing disinfectant of food processing, is easy to handle, and generates less chlorine dioxide.SOLUTION: Provided is a method for producing an aqueous solution containing chlorous acid to be used as a disinfectant, by generating chlorous acid which is safe to the human body as a preprocessing disinfectant of food processing, is easy to handle, and generates less chlorine dioxide. The chlorous acid is generated by adding to an aqueous solution of sodium chlorate, sulphuric acid or its aqueous solution of an amount and a concentration allowing keeping the pH value of the aqueous solution within 2.3 to 3.4, and reacting them so as to generate chloric acid, and adding hydrogen peroxide of an amount equal to or more than an amount required for a reductive reaction to the chloric acid.SELECTED DRAWING: None

The utility model discloses a reactor of chlorine dioxide generator relates to chlorine dioxide preparation technical field, including multistage reaction unit of intercommunication, and the liquid communication pipe and the gas communication pipe are communicated between adjacent reaction unit, and the first stage reaction unit is connected with the feed dynamic mixer, and the last stage reaction unit is connected with the disinfectant outlet pipe and the disinfectant gas outlet pipe. The reactor can realize gas, liquid branch circuit operation in use, make the chlorine dioxide in the reaction liquid in time from the reaction liquid to the gas phase space of reactor, then from disinfectant gas outlet pipe, prevent the chlorine dioxide from the disproportionation reaction and generate chlorate in liquid phase, to improve its reaction effect, raw material conversion rate, chlorine dioxide purity improves obviously, prevented the occurrence of disproportionation reaction.

This invention provides a copper etching solution, its preparation method, etching method, and application. The copper etching solution comprises 1-30 parts cerium ammonium sulfate, 0-20 parts inorganic acid, 0-20 parts organic acid, and 0-90 parts water. The inorganic acid includes one or more of sulfuric acid, phosphoric acid, hypochlorous acid, chloric acid, boric acid, carbonic acid, nitric acid, nitrous acid, and hydrochloric acid. The organic acid includes one or more of citric acid, acetic acid, tartaric acid, malic acid, formic acid, propionic acid, butyric acid, isobutyric acid, valeric acid, isovaleric acid, oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, glycolic acid, acrylic acid, methacrylic acid, lactic acid, gluconic acid, maleic acid, benzoic acid, and salicylic acid. The copper etching solution of this invention exhibits good etching properties for copper and minimal damage to nickel-chromium alloys.

The invention belongs to the technical field of welding and hot dipping, and particularly relates to a copper alloy / copper plate strip hot dipping flux and a preparation method thereof. The plating assistant provided by the invention comprises the following components in percentage by mass: 5-15% of brominated salt, 5-15% of chloro-free acid, 5-15% of organic alkali, 3-5% of surfactant and the balance of solvent. According to the invention, the surfactant is added into the plating assistant, so that ion aggregation and growth are inhibited, the surface tension is reduced, the binding force between the tin coating and a copper alloy / copper plate strip is improved, the uniformity of the hot-dip tin coating is obviously improved, and the uniform and bright tin coating with the thickness of 0.8-10 microns and the thickness tolerance of + / -0.6 microns can be obtained through one-time dip plating.

The present invention belongs to the field of fluorescence detection technology, and provides a benzothiazole fluorescent probe for detecting cupric chlorate and a preparation method thereof. The method of the present invention comprises the following steps: 6-iodo-2-methylbenzothiazole, triphenylphosphine palladium, cuprous iodide, triphenylphosphine, 4-ethynyl-N, N-dimethylaniline and triethylamine are reacted, and the obtained N, N'-dimethyl-4-((2-methylbenzo [d] thiazole-6-yl) ethynyl) aniline is reacted with sodium amide and N, N'-dimethylformamide, and the reaction product and p-dimethylaminobenzaldehyde are reacted for a second time to obtain a benzothiazole fluorescent probe. The fluorescent probe PEB-DMA of the present invention can specifically identify cupric chlorate and show an enhanced fluorescence response; the probe PEB-DMA has a certain anti-interference ability, and has a high sensitivity and a low detection limit for low-concentration cupric chlorate detection.

The invention relates to a chemical recovery technology of waste polyester, and provides a decolorization method of waste polyester alcoholysis liquid. The waste polyester is subjected to alcoholysis in ethylene glycol, part of ethylene glycol is removed under reduced pressure, the mass ratio of ethylene glycol to BHET is (1.5-4): 1, water and a hydroxyl carboxylic acid / hydroxyl carboxylic acid salt buffer system are added, the pH is adjusted to 4.5-6.5, a chlorite decolorizing agent matched with the content of ethylene glycol in alcoholysis liquid is added at the temperature of 100-140 DEG C in a segmented mode for decolorizing, and the waste polyester is obtained. And then reducing residual high-valence chloride anions by adopting a combination of sodium hydrogen sulfite and ascorbic acid, removing inorganic anions through strong-basicity anion exchange resin, and finally crystallizing to obtain the high-whiteness and high-purity BHET. The method has the advantages of low oxidant consumption, high decolorization efficiency, substantial reduction of chlorate residue, and reduction of side reactions.

The present application relates to the technical field of deep treatment of brine for preparation of potassium hydroxide by electrolysis, and discloses a method and operation system for removing chlorate produced in preparation of potassium hydroxide by ion-exchange membrane electrolysis, step one: introducing the brine discharged from the electrolysis procedure into a buffer homogenizing tank, mixing after stirring, proportionally shunting through a double-path variable frequency pump, and respectively conveying to a titanium-based electrolytic cell and a dechlorination raw material buffer tank, the titanium-based electrolytic cell being supplied with nitrogen until the oxygen content in the cell is ≤0.5%; step two: starting the power supply of the titanium-based electrolytic cell, setting the initial cell voltage, adjusting the current density through a rectifier, and simultaneously dynamically adjusting the electrolysis parameters based on the free chlorine concentration in the brine to control the hydrogen production. The method and operation system for removing chlorate produced in preparation of potassium hydroxide by ion-exchange membrane electrolysis can accurately control the generation and residual amount of chlorate in the electrolysis system, avoid the chlorate from passing through the ion-exchange membrane into the cathode to cause the chlorate in the finished product to exceed the standard, and significantly improve the purity and quality grade of the potassium hydroxide product.

The invention relates to a method (70) for cleaning an aqueous composition, referred to as the conveying composition (61), for conveying floating objects belonging to the group of fruits and vegetables, in a hydraulic conveyor of such floating objects, the hydraulic conveyor being of a type; —with the recirculation of the conveying composition (61), and; —with treatment of the conveying composition (61) by addition of chlorine dioxide (65) kept in the conveying composition (61) during the conveying of such floating objects for the purposes of controlling the microbiological flora growing in the conveying composition (61), whereby a conveying composition, referred to as a chlorate-rich composition (66), comprising the chlorate anion of general formula (CO3) in a hydrated form in the chlorate-rich composition (66), is formed due to this treatment; method in which, the hydraulic conveyor being devoid of floating objects and the addition of chlorine dioxide (65) in the chlorate-rich composition (66) being suspended; a flow rate of a composition, referred to as the composition (42) to be cleaned, formed by mixing a flow of the chlorite-rich composition (66) and at least one flow of a composition, referred to as the photoreactive composition (40), comprising at least one photo-sensitive compound chosen from the group formed of sulfite anion salts, bisulfite anion salts, disulfite anion salts and salts of a hydrosulfite anion is irradiated (75) by an electromagnetic radiation comprising at least one electromagnetic wave in the UV-C range, so as to form, in this composition (42) to be cleaned, at least one compound, referred to as the active compound (77), capable of reacting chemically with chlorate anion F and forming a conveying composition, referred to as the cleaned composition (67), with a concentration of chlorate anion less than the concentration of chlorate anion in the chlorate-rich composition (66). The invention also relates to a hydraulic conveyor equipped with a cleaning device for implementing such a method.

The invention belongs to the field of biology, and particularly relates to a preparation method of modified montmorillonite, which comprises the following steps: step 1, preparing sodium montmorillonite; step 2, modifying sodium montmorillonite by adopting cyclodextrin and organic acid; step 3, mixing the sodium-based montmorillonite obtained in the step 2, pypocholoride and chlorate; and step 4, mixing the probiotics, the enzyme and the mixture obtained in the step 3. The modified montmorillonite is subjected to sodium modification, cyclodextrin, hypochlorite and chlorate are loaded, and prebiotics are added, so that the breeding performance of the montmorillonite can be effectively improved. Meanwhile, the invention also provides a preparation method and application of the modified montmorillonite.

The present application relates to waste polyester chemical recycling technology, provide a kind of waste polyester alcoholysis liquid decolorization method.Waste polyester is alcoholized in ethylene glycol and removes part of ethylene glycol under reduced pressure, so that the mass ratio of ethylene glycol and BHET is 1.5-4:1, water and hydroxyl carboxylic acid / salt buffer system are added, pH is adjusted to 4.5-6.5, and decoloring agent of chlorite salt matching with the ethylene glycol content of alcoholysis liquid is added in stages under 100-140 DEG C to decolor, then sodium bisulfite and ascorbic acid combination is used to reduce residual high-valence chlorine anion, and inorganic anion is removed by strong alkaline anion exchange resin, and finally high whiteness, high purity BHET is obtained by crystallization.The method has low oxidant dosage, high decoloring efficiency, can significantly reduce chlorate residue and reduce side reaction.

The preparation method comprises the following steps: dissolving a certain amount of noble metal palladium chlorate or silver nitrate in a certain amount of absolute methanol to obtain a solution A; adding a certain amount of alumina powder into a certain amount of absolute methanol to obtain a solution B; adding the solution A into the solution B, and adding a certain amount of methanol solution of 1M sodium hydroxide; and centrifugally washing the obtained precipitate with absolute ethyl alcohol for 3-5 times, drying at 60-80 DEG C for 12-15 hours, and calcining in a tubular furnace at 400-500 DEG C in a hydrogen atmosphere to obtain the noble metal loaded aluminum oxide catalyst. The preparation process is simple and practical, the particle size of the noble metal Pt or Ag is reduced to dispersed single atoms, the dispersity is improved, the noble metal loading amount required by catalysis is reduced, the cost is reduced, and the prepared catalyst is stable in catalytic performance, good in activity and high in catalytic efficiency and can be commercially used.

There is disclosed a method of forming chlorine dioxide comprising passing chlorous acid through a membrane including a catalyst suitable to catalyse the formation of chlorine dioxide from chlorous acid. There is also disclosed a membrane suitable for forming an aqueous solution of chlorine dioxide comprising a catalyst suitable to catalyse the formation of chlorine dioxide from chlorous acid or alkali metal chlorite.

A composition for semiconductor processing includes polishing particles, water, and a biocide. The biocide includes a first biocide and a second biocide, the first biocide includes a thiazolinone-based compound, and the second biocide includes a chloric acid-based compound.

An electrolysis unit (13) that constitutes at least a portion of an electrolysis device generates a chloric acid compound by electrolyzing rearing water in a region where the rearing water is retained or flows, to decompose ammonia or ammonium ions in the rearing water. The electrolysis unit (13) has: an electrode unit (55) having a first electrode (55A) and a second electrode (55B) that are disposed in the region; and a voltage application unit (51) that applies a voltage between the electrodes. The voltage application unit (51) switches between a first state in which electrolysis is performed in the region by applying a voltage in such a manner that the first electrode (55A) serves as an anode and the second electrode (55B) serves as a cathode, and a second state in which a voltage is applied in such a manner that the second electrode (55B) serves as an anode and the first electrode (55A) serves as a cathode.

The invention relates to the technical field of light salt brine deep treatment for preparing potassium hydroxide through an electrolytic method, and discloses a method for removing chlorate through potassium hydroxide preparation and an operation system thereof.The method comprises the steps that firstly, light salt brine discharged in the electrolysis process is introduced into a buffer homogenizing tank, stirred and mixed, and then proportionally shunted through a two-way variable frequency pump; the raw materials are conveyed to a titanium-based electrolytic bath and a dechlorination raw material buffer tank respectively, and nitrogen is introduced into the titanium-based electrolytic bath until the oxygen content in the bath is smaller than or equal to 0.5%; and 2, starting a titanium-based electrolytic cell power supply, setting an initial cell voltage, adjusting the current density through a rectifier, and dynamically adjusting electrolysis parameters based on the free chlorine concentration in the light salt brine so as to control the hydrogen yield. According to the method for removing chlorate through potassium hydroxide preparation and the operation system thereof, generation and residual quantity of chlorate in an electrolysis system can be accurately controlled, it is avoided that chlorate in finished alkali exceeds the standard due to the fact that chlorate penetrates through an ionic membrane and enters a cathode, and the purity and the quality grade of a potassium hydroxide product are remarkably improved.

To provide a slightly acidic electrolyzed water activation treatment device, a slightly acidic electrolyzed water generation system, a slightly acidic electrolyzed water production method, and a slightly acidic electrolyzed water activation method that easily enable higher hypochlorous acid concentration and pH adjustment.SOLUTION: A slightly acidic electrolyzed water generating system according to one aspect of the present invention includes: a storage tank for storing slightly acidic electrolyzed water; and a slightly acidic electrolyzed water activation treatment device for performing activation treatment to the slightly acidic electrolyzed water stored in the storage tank. A slightly acidic electrolyzed water activation treatment device according to another aspect of the present invention includes: a pair of electrodes for electrolyzing the slightly acidic electrolyzed water; and a stirring member for stirring the slightly acidic electrolyzed water. Further, a slightly acidic electrolyzed water production method and a slightly acidic electrolyzed water activation method according to another aspect of the present invention include the steps of: generating slightly acidic electrolyzed water; storing the slightly acidic electrolyzed water; and further electrolyzing the slightly acidic electrolyzed water.SELECTED DRAWING: Figure 1

The present application relates to a platinum-loaded tungsten trioxide doped aqueous hydrogen-induced photochromic material, a preparation method thereof and an application thereof, the preparation method comprising the following steps: preparing an initiator aqueous solution; preparing an emulsifier aqueous solution; preparing an acrylic acid emulsion by using an acrylic acid monomer, the initiator aqueous solution and the emulsifier aqueous solution; preparing a Pt / WO3 composite nanorod material by using a WO3 nanorod material, ethylene glycol, platinum chlorohydrate and deionized water; adding the Pt / WO3 composite nanorod material into the acrylic acid emulsion, and filtering the mixture to obtain a hydrogen-induced photochromic material. The hydrogen-induced photochromic material is prepared by using the preparation method. The application is the application of the hydrogen-induced photochromic material in hydrogen leakage detection. The preparation method is simple in process and low in cost, the prepared hydrogen-induced photochromic material can obviously change color when being subjected to gas-induced photochromism, has short response time, high sensitivity, strong adhesion, good flexibility and environmental protection.

The application relates to a carbon-based liquid-liquid separation membrane and a preparation method and application thereof. First, a controllable oxidation method is adopted, graphite or carbon nanotubes and other carbon materials are oxidized by potassium permanganate in a high-chloric acid or chlorosulfonic acid aqueous solution, then a vacuum filtration method is adopted to uniformly deposit the oxidized carbon materials on the surface of a filter membrane, thus an excellent liquid-liquid separation membrane is obtained. The separation membrane can be used for efficient separation of a mixed liquid or emulsion of a polar solvent and a non-polar solvent, has a series of remarkable advantages such as simple method, high separation efficiency, repeated use and the like, and has a good market application prospect.

To provide a circulation water treatment system for breeding aquatic lives for efficiently decomposing ammonia or ammonium ions in water by a method where dependence on microbes is suppressed, and for efficiently removing pollution elements other than the ammonia or ammonium ions.SOLUTION: A circulation type treatment system 1 comprises: a removal part 5; an electrolysis part 13; and a residual chlorine removal part. The removal part 5 removes a solid included in breeding water in a first region where the breeding water sent from a breeding tank 3 is stored or is circulated. The electrolysis part 13 generates a chloric acid compound by electrolysis of the breeding water, in a second region where the breeding water passed through the first region is stored or is circulated, then causes the generated chloric acid compound to react with ammonia or ammonium ions in the breeding water. The residual chlorine removal part removes at least residual chlorine, in a third region where the breeding water passed through the second region is stored or is circulated.SELECTED DRAWING: Figure 1

The invention provides a method for recovering a noble metal catalyst in proton exchange membrane electrolyzed water, and relates to the technical field of electrolyzed water. The recovery method comprises the following steps: primary recovery: sequentially carrying out acid leaching activation, washing, drying and hot pressing on a membrane electrode, and recovering to obtain the membrane electrode; secondary recovery: sequentially performing dry stripping, wet stripping and grinding on the noble metal catalyst layer on the membrane electrode to obtain noble metal catalyst layer powder; mixing the noble metal catalyst layer powder, an ionomer and a solvent, and carrying out ball milling to obtain slurry; coating and hot-pressing the slurry in sequence, and recovering to obtain a membrane electrode; and third-stage recovery: dissolving the noble metal catalyst layer powder in aqua regia, sequentially carrying out ion exchange, precipitation and filtration, and recovering to obtain chloroiridic acid and chloroplatinic acid. The efficient and accurate stepped recovery method of the noble metal catalyst is provided, the problem of the bottleneck of platinum group metal resources in the PEM electrolyzed water is solved, and a feasible path is provided for efficient utilization of the platinum group metal.

The invention discloses a method for co-processing copper anode slime silver reduction waste liquid and sulfur-containing and chlorine-containing acidic waste gas. The method comprises the following steps: firstly, carrying out quenching and tempering treatment on the silver reduction waste liquid, and then carrying out gradient cooperative treatment on sulfur-containing and chlorine-containing acidic waste gas by taking the quenched and tempered liquid as an alkaline absorbent, namely, when the pH value of the quenched and tempered liquid is in different ranges, firstly treating the sulfur-containing waste gas and then treating the chlorine-containing waste gas, so that sulfur in the waste gas is converted into soluble sulfate; chlorine is converted into soluble chlorine salt, and formaldehyde in the waste liquid is converted into non-toxic formic acid or formate. Finally, the treated waste gas is emptied after being detected to reach the standard. And carrying out wastewater treatment on the liquid after absorption, and discharging after reaching the standard. According to the method, the silver reduction waste liquid has the characteristics of alkalinity and high reducibility of formaldehyde components, the sulfur-containing and chlorate-containing acidic waste gas has the oxidation characteristic, and the silver reduction waste liquid and the sulfur-containing and chlorate-containing acidic waste gas are subjected to neutralization reaction and oxidation-reduction reaction, so that the purpose of treating waste with waste is achieved, and the treatment cost of the waste liquid and the waste gas in the copper anode slime semi-wet smelting process is greatly reduced.

The invention discloses a preparation method of a molybdenum disulfide-gold nano composite material based on ice bath and ultrasonic stripping, and belongs to the technical field of nano enzymes. Molybdenum disulfide powder and a dispersion stabilizer are dispersed and subjected to ultrasonic stripping treatment, and suspension liquid is obtained; carrying out gradient centrifugal separation on the suspension to obtain a precipitate; dispersing the precipitate in ultrapure water, carrying out ultrasonic treatment, adding a surfactant, and uniformly stirring to obtain a mixed solution; and heating the mixed solution, slowly dropwise adding a gold chlorate aqueous solution, carrying out a first reaction and a second reaction, and then carrying out gradient centrifugation to obtain the composite material. Through cooperation of the molybdenum disulfide nanosheets and the gold nanoparticles, the gold nanoparticles are loaded on the surfaces of the molybdenum disulfide nanosheets, and the gold nanoparticles improve the stability of the molybdenum disulfide nanosheets, so that molybdenum disulfide is not easy to decompose in water. Due to the surface plasma resonance effect of the gold nanoparticles, the gold nanoparticles have high photothermal conversion rate and have better photothermal effect than single molybdenum disulfide, so that photothermal therapy is realized.