221 results about "H2O2 - Hydrogen peroxide" patented technology

The invention discloses application of iron ruthenium nano-enzyme in preparation of nucleic acid detection products, and belongs to the technical field of biological detection and nano-materials. The RIN has stable peroxidase-like (POD) activity, and can catalyze a chromogenic reaction between 3, 3 ', 5, 5'-tetramethyl benzidine (TMB) and hydrogen peroxide (H2O2). The catalytic activity of the nano-enzyme can be selectively inhibited by pyrophosphate (PPi) generated in a nucleic acid amplification reaction, so that visual colorimetric analysis on whether target nucleic acid exists or not is realized. In combination with a polymerase chain reaction (PCR) system, the invention constructs a new nucleic acid detection strategy which does not need fluorescence labeling, is simple and convenient to operate and has high sensitivity. Through verification, the system can be widely applied to rapid on-site screening and visual interpretation of related nucleic acid of drug-resistant pathogens (such as ESKAPE flora) and the like, and has a good application prospect.

The invention relates to the technical field of etching liquid, in particular to a copper metal etching liquid composition. Comprising the following components in percentage by weight: 5-10% of hydrogen peroxide, 0.1-0.3% of a first fluorine source, 1-5% of first inorganic acid, 1-5% of alkali, 0.01-0.8% of a first metal corrosion inhibitor and the balance of deionized water; and the auxiliary agent comprises 2-8% of a second fluorine source, 10-55% of second inorganic acid, 0.1-2% of a second metal corrosion inhibitor and the balance of deionized water. The etching liquid is excellent in etching effect, CD-loss reaches 0.6-0.8 [mu] m, the slope angle reaches 40-50 degrees, the highest copper load reaches 20000 ppm, and meanwhile the problem that when copper is high, due to the fact that the nitric acid concentration is too high, metal etching is abnormal is solved.

The present application belongs to the technical field of rare metal metallurgy, and particularly relates to a method and device for removing arsenic in germanium tetrachloride by hydrogen peroxide oxidation. The arsenic removal device comprises GeCl4, H2O2 and HCl storage containers, the storage containers are connected with a first reactor and a second reactor through pipelines, fourth, fifth, sixth, seventh and eighth valves are arranged on the pipelines, a first constant temperature heater is arranged at the lower part of the first reactor, a first mechanical stirrer is arranged at the top of the first reactor, a first residual liquid collector is connected with the bottom of the first reactor through a pipeline, and ninth and eleventh valves are arranged between the first reactor and the first residual liquid collector. Compared with the traditional chlorine arsenic removal method, the present application uses hydrogen peroxide to remove arsenic in germanium tetrachloride, is more environmentally friendly, safe, low-cost and does not bring new impurity elements, and the arsenic removal effect is very significant.

The invention provides a generating device for electrochemically generating hydrogen peroxide integrated in a drum of a washing machine and the washing machine. The device serves as a functional inner component, is tightly attached to the inner wall of an outer barrel of the washing machine or in a barrel gap, does not need to be connected with an external water path, achieves high integration with the roller, and reduces occupation of the effective washing volume of the roller to the maximum extent. A first shell and a second shell are combined to form a reaction space, and a difunctional anode electrode and a difunctional cathode electrode are integrated in the reaction space and are electrically connected with a positive electrode and a negative electrode of an external power supply respectively to form a complete electrochemical loop. When water flow naturally flows through the reaction space in the washing process, a specific working potential is applied to the difunctional anode electrode under constant potential control, so that hydrogen peroxide (H2O2) and / or hydroxyl radicals (OH) are / is generated on the surface of the difunctional anode electrode in an in-situ electrochemical mode.

The application discloses a preparation method of a molybdenum-nickel hydroxyl oxide catalyst and application thereof, and the preparation method comprises the following steps: firstly, a precursor MoNi LDH material is obtained through a hydrothermal reaction; and then, the MoNi LDH material is electrochemically oxidized to obtain the molybdenum-nickel hydroxyl oxide material; and the electrochemical oxidation time is 10-60 minutes. The molybdenum-nickel hydroxyl oxide material has excellent urea catalytic activity and stability. When the molybdenum-nickel hydroxyl oxide material is applied as an anode catalyst, urea removal and hydrogen peroxide preparation can be realized, the problem of activity reduction caused by the lack of OH- in a traditional electrocatalytic process is solved, the urea removal rate in water can reach 100%, 28 g / L of hydrogen peroxide is obtained at the same time, the Faraday efficiency of H2O2 generation is maintained at 80%-90%, the device can maintain stable urea removal and H2O2 generation performance in a long running time, the activity of the generated H2O2 is high, and the H2O2 can be used for Fenton treatment of sulfamethoxazole pollutants in water, and the removal rate of sulfamethoxazole is more than 90%.

The invention belongs to the technical field of biosensing of organic electrochemical transistors, and particularly relates to an organic electrochemical transistor based on a spirobifluorene polymer as well as a preparation method and application of the organic electrochemical transistor. An active layer of the organic electrochemical transistor is composed of poly [benzo [2, 1, 3] thiadiazole-4, 7-diyl-[5-[3, 6-bis (octyloxy)-9, 9 '-spirobis [9H-fluorene]-2-yl]-1, 3-phenylene]], an ionic gel layer is prepared by mixing PVDF-HFP, EMIM TFSI and Li TFSI, and a gate electrode is modified with MnO2 nanoparticles and poly [benzo [2, 1, 3] thiadiazole-4, 7-diyl-[5-[3, 6-bis (octyloxy)-9, 9'-spirobis [9H-fluorene]-2-yl]-1, 3-phenylene]-1, 3] thiadiazole-4, 7-diyl-[5 and 2, 3-phenylene]]. The organic electrochemical transistor can be used for detection of hydrogen peroxide, is high in detection sensitivity, good in selectivity and wide in application range, and provides a new solution for detection of hydrogen peroxide.

The application belongs to the technical field of environmental catalysis and green chemical industry, and particularly relates to a PDI / PMSO composite photocatalytic system and a method for producing hydrogen peroxide by using organic wastewater. The PDI / PMSO composite photocatalytic system can significantly improve the yield of H2O2, and when the concentration of PMSO is 10 mM, the yield of H2O2 reaches 137.28 muM.g ‑1 ·h ‑1 -1.h-1, which is 4.3 times higher than that of a pure water system. The system can promote the separation of photo-generated electron-hole pairs (the steady-state fluorescence intensity is reduced by 37%) and enhance the electron conduction efficiency (the photocurrent is increased by 1.8 times) through synergistic effect, and has excellent cycle stability (the yield is maintained above 80% after 10 cycles) and practical water body applicability. The process is simple and low in cost, and provides an integrated solution for the resource utilization of organic wastewater and the green synthesis and application of H2O2.

The invention discloses a control method of a hydrogen peroxide device, a control device of the hydrogen peroxide device, the hydrogen peroxide device and ceiling equipment. The method comprises the following steps that refrigeration sheet specification information and working condition information of the hydrogen peroxide device are obtained, the refrigeration sheet specification information at least comprises refrigeration sheet rated voltage and refrigeration sheet rated current, and the working condition information at least comprises electrolytic current; according to the specification information and the working condition information of the refrigeration sheet, the target working state of the refrigeration sheet is determined, and the target working state at least comprises target working voltage and target working current; based on the target working state, a control strategy set is generated, and the control strategy set is at least used for adjusting the working voltage of the refrigeration sheet to the target working voltage and adjusting the working current of the refrigeration sheet to the target working current. The technical problems of electrolyte loss and safety risk caused by the fact that water flows out of a hydrogen peroxide device due to the fact that the condensate water amount is too large in the prior art are solved.

The utility model discloses a kind of hydrogen peroxide precision liquid-adding control devices of loop disinfection machine, belong to the technical field of hydrogen peroxide liquid-adding, its technical scheme main point includes storage component, liquid-adding component and base, the storage component is set in the top of base, the liquid-adding component is set in the front side of storage component, by the setting of storage component, storage component can reach the effect of connecting liquid-adding component, and storage component can also play the effect of storing hydrogen peroxide liquid, by the setting of liquid-adding component, liquid-adding component can reach the effect of accurately dosing hydrogen peroxide liquid, to play the effect of hydrogen peroxide precision liquid-adding control, to make storage component cooperate with liquid-adding component use, can solve the problem that existing loop disinfection machine is not accurate when using hydrogen peroxide to disinfect, to possibly lead to unstable disinfection effect, even possibly because of excessive hydrogen peroxide to cause damage to equipment or environment.

Improved methods for reducing and preventing nosocomial infections is provide comprising installing one or more dry hydrogen peroxide (DHP) generating devices into a healthcare treatment area, producing DHP, and maintaining the concentration between 1.0 parts-per-billion (ppb) and 200 ppb.

A substrate processing method includes processing a surface of silicon with an oxidizing aqueous solution containing a hydrogen peroxide solution and an alkaline liquid to form an oxide film on the surface of the silicon, to form a channel region of a transistor; and forming a gate insulating film of the transistor on a surface of the oxide film.

This invention discloses an upflow electrochemical treatment device and method for treating wastewater containing hexavalent chromium. The device includes a cylindrical inner reaction chamber and a double-layer reaction chamber. The inner reaction chamber contains a mesh-like ruthenium-iridium-titanium anode and a carbon fiber felt membrane cathode. The double-layer reaction chamber includes an external overflow chamber and an internal upflow chamber. The method includes the following steps: S1, preliminary preparation; S2, wastewater injection; S3, continuous wastewater treatment; S4, detection. This invention mainly uses an upflow electrochemical water purification membrane for wastewater treatment, which can efficiently reduce highly toxic hexavalent chromium to less toxic trivalent chromium, effectively reducing the toxicity of the wastewater. Simultaneously, it utilizes the oxygen released during the reduction of hexavalent chromium to achieve the simultaneous generation of hydrogen peroxide, improving resource utilization and reducing treatment costs.

The application discloses a paper pulp chlorine-free bleaching method, which comprises the following steps: 1) ozone bleaching to obtain ozone-bleached paper pulp; 2) hydrogen peroxide bleaching to obtain hydrogen peroxide-bleached paper pulp; 3) chelation treatment to obtain chelation-treated paper pulp; and 4) hydrogen peroxide bleaching to obtain bleached pulp. The paper pulp chlorine-free bleaching method has the advantages of low temperature, normal pressure, low energy consumption, low cost, high efficiency, suitability for various paper pulp systems, green environmental protection and the like, and the bleached paper pulp has high whiteness, high viscosity, low Kappa number and no AOX; and the method is suitable for large-scale industrial application.

The present invention relates to a method for reducing emissions from manure, the method comprising adding 5.0-11.5 g of iron salt per 1 kg manure and adding 1.7-3.5 g of hydrogen peroxide (H2O2) per 1 kg manure. The invention also relates to a method for improving plant growth. Furthermore, the invention relates to a manure additive for reducing emissions from manure and improving plant growth comprising H2O2 and biochar. Furthermore, the invention relates to an organic fertilizer comprising manure and the manure additive.

The invention discloses a dual-mode detection kit for highly sensitive detection of ERalpha based on HRP-streptavidin. The dual-mode detection kit comprises the following raw materials: a glassy carbon electrode, 1-AP-CNHs, AuNPs, Sh-Apt, MCH, Bio-Ab, and HRP-streptavidin. The invention successfully constructs an electrochemical detection kit for detecting ERalpha with high sensitivity on the basis of the 1-AP-CNHs / AuNPs composite material. According to the invention, due to the redox activity of HRP-streptavidin, the HRP-streptavidin and H2O2 are subjected to redox reaction to generate a current signal; in addition, hydrogen peroxide can be catalyzed to generate. OH free radicals, and the free radicals can oxidize TMB to generate blue products, so that colorimetric reaction is initiated, and ERalpha can be detected more accurately. The electrochemical-colorimetric dual mode of the 3D 1-AP-CNHs / AuNPs composite material and the HRP-streptavidin for high-sensitivity detection of the ERalpha disclosed by the invention greatly improves the detection accuracy. The kit has the advantages of good selectivity, strong stability, high sensitivity, anti-interference performance, environmental protection and the like.

1. The name of the design product: hydrogen peroxide sterilizer (L200). 2. The use of the design product: for hydrogen peroxide sterilization equipment. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view 1.

A method of and system for monitoring the level of hydrogen peroxide gas in a system such as an isolation barrier. Gas is sampled from the system to a gas cell. The sampled gas may include hydrogen peroxide gas and water vapor. A laser beam from a laser source at a known polarization state is passed through the gas cell and the hydrogen peroxide gas and water vapor therein. An electrical field is created in the gas cell to reduce optical interference from water vapor while preserving the ability to more accurately measure the concentration of hydrogen peroxide gas in the gas cell. A change in the polarization state of the laser beam after passage through the gas cell is detected. Based on the detected change in the polarization state of the laser beam, the concentration of the hydrogen peroxide gas in the gas cell is determined.

The invention provides a self-breathing anti-scaling cathode, a preparation method, an electrolytic bath and application of the electrolytic bath, and belongs to the technical field of electrochemical electrodes. The preparation method comprises the following steps: mixing a carbon substrate and a catalyst precursor solution, and carrying out first calcination on the mixed solution under a protective atmosphere to obtain an anti-scaling cathode; and the anti-scaling cathode is sprayed with a water repellent agent and then subjected to second calcination in an oxygen-containing atmosphere, and the self-breathing type anti-scaling cathode is obtained. On one hand, the oxygen mass transfer efficiency is improved through the self-breathing anti-scaling cathode, deposition of divalent ions such as Ca < 2 + > and Mg < 2 + > is inhibited, the generation capacity of hydrogen peroxide is remarkably enhanced, and the long-term operation stability is improved; on the other hand, a spatial hydrophobic microenvironment is provided, and the yield of H2O2 is increased under the condition that external air ventilation is not needed; meanwhile, due to the design of the hydrophobic anode, decomposition of H2O2 at the anode is reduced, and efficient and stable electrosynthesis of H2O2 for pollutant degradation is realized.

The invention relates to the technical field of chemical analysis and detection, in particular to a method for detecting halogen in a paper printed matter based on oxygen bomb combustion-ion chromatography. The detection method comprises the following steps: placing a folded to-be-detected paper printed matter in an oxygen bomb device, introducing oxygen, and combusting to obtain a to-be-detected liquid; a strong alkali solution is added into an oxygen bomb combustion cavity of the oxygen bomb device; a hydrogen peroxide solution is added into the absorption cup; and carrying out ion chromatography detection on the to-be-detected liquid, and obtaining the content of halogen in the to-be-detected paper printed matter according to the detected peak area of halogen and a preset standard curve. The combustion area is increased by folding the sample, the combustion efficiency is improved, oxygen is supplied through the hydrogen peroxide solution, and sufficient combustion of the sample is ensured; cO2 is absorbed by using a strong alkali solution, the pressure of the cavity is reduced, and the operation safety is improved; and then microgram / kg-level detection is realized by utilizing an ion chromatography method.

1. The name of the design product: hydrogen peroxide space sterilizer (MAX-M2000U). 2. The use of the design product: the design product is used for space sterilization and disinfection. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The application relates to the field of immunohistochemical staining, in particular to a DAB buffer and a DAB staining solution kit for DAB color development. The application discloses a DAB buffer for DAB color development, and the main components are hydrogen peroxide, nonylphenol polyoxyethylene ether, magnesium sulfate and trisodium citrate. The metal ions in the DAB buffer can enhance the electron transfer speed between DAB and hydrogen peroxide, and improve the color development sensitivity. The nonylphenol polyoxyethylene ether can stabilize the hydrogen peroxide, so that the hydrogen peroxide can be stored for a longer time and the cost is saved. The application further discloses a DAB staining solution kit, which comprises a blocking agent, a reaction enhancer, an enzyme-labeled polymer IgG, a DAB concentrated solution, a DAB buffer and hematoxylin, and the above-mentioned DAB buffer for DAB color development. The DAB staining solution kit of the application can improve the detection sensitivity of immunohistochemical staining, and can also improve the storage stability of the DAB color development solution and reduce the cost.

A preparation method of the acid-resistant low-density walnut shell tail-chasing proppant comprises the following steps that firstly, the mesh number of the proppant is selected according to the characteristics of a target well; 2, collecting a large amount of walnut shells, and crushing the large-size walnut shells into a sample 1; 3, adding hydrogen peroxide (H2O2) into the crushed sample 1 until foams disappear, so as to obtain a sample 2; 4, adding hydrochloric acid (HCl) into the sample 2, and removing carbonate and calcium cementing substances at the temperature of 50 DEG C to obtain a sample 3; 5, distilled water is added into the sample 3 to wash the sample to be neutral, clear liquid on the upper portion of the beaker is removed through a siphonage method, and a sample 4 is obtained; and 6, mixing the treated sample 4 with quartz particles according to a ratio, coating the mixture with resin, and performing functional compounding by adopting a mechanical mixing and surface treatment mode to obtain the acid-resistant low-density walnut shell tail-chasing proppant. The fracturing fluid has the characteristics of low cost, high acid resistance and the like, is suitable for reservoirs with flowing bottlenecks in near-wellbore areas, optimizes the flow conductivity of support fractures after oil and gas reservoirs are transformed, and improves the productivity of oil and gas wells.

The invention relates to gene modification, in particular to a method for improving the catalytic capacity of engineering P450 peroxygenase hydrogen peroxide and application of the method. The invention relates to a method for improving hydrogen peroxide catalytic capacity of P450 enzyme, which comprises the following steps of: identifying a channel of the P450 enzyme by using Caver Web 1.0 software by taking a heme cofactor of the P450 enzyme as a starting point; the method comprises the following steps: selecting a target channel with the channel length of 10-30, the curvature of 0-2 and the diameter of 0-3 as a target channel, then selecting amino acid of which the side chain faces the channel at an inlet or a bottleneck of the target channel as key amino acid, and then performing specific mutation on one or more key amino acids, further, at least one channel capable of improving the hydrogen peroxide catalytic capability of the P450 enzyme is obtained, so that the catalytic capability of the P450 enzyme is improved under the catalysis of hydrogen peroxide. The catalytic activity of a plurality of mutants obtained by the invention is compared with that of a wild enzyme, and the channel with high catalytic activity is an H2O2 channel. The application of the method can improve the hydrogen peroxide utilization capability of the P450 enzyme, and further improves the activity of the catalytic substrate of the P450 enzyme.

The invention relates to the field of disinfection equipment, in particular to pipeline type hydrogen peroxide disinfection and sterilization equipment which comprises a case and an evaporation mechanism. The evaporation mechanism is arranged in the case and comprises a shell, a water dropper and a rotating frame; the rotating frame is rotatably installed in the shell around the vertical axis, the rotating frame is sequentially and alternately provided with a first heating plate and a second heating plate in the circumferential direction of the rotating frame, liquid drops of the dropper drop onto the first heating plate and the second heating plate and are evaporated and vaporized on the first plate and the second plate, and no atomized liquid drops are discharged along with steam. The first plate and the second plate which are inclined in opposite directions are arranged, and the drippers moving in opposite directions are arranged, so that liquid drops can fall on different positions of the first plate and the second plate, the different positions of the first plate and the second plate can participate in evaporation of the liquid drops, and uneven temperature caused by local evaporation of the first plate and the second plate is avoided; and the temperature monitoring result of the first plate and the second plate is influenced.

The present invention relates to a method and a device for preparing bath compositions within hot-dip galvanizing plants, in particular a flux bath, wherein process fluid of the flux bath is transferred in batch operation into at least one separate precipitation bath, in which ammonia (NH3) and hydrogen peroxide (H2O2) are alternately added to the process fluid until no pH change or decrease is measurable when hydrogen peroxide is added.

The present invention relates to a method for recovering lithium and, more specifically, to a method for recovering lithium, the method comprising the steps of: (a) dissolving cathode material powder including a cathode active material having an olivine structure in an acidic solution to prepare a solution; (b) adding the solution with an aqueous hydrogen peroxide (H2O2) solution to obtain a first leachate and a first leach residue, followed by separating same; (c) adding a calcium compound to the separated first leachate to obtain a second leachate and a second leachate residue, followed by separating same; (d) diluting the separated second leachate with water; (e) injecting carbon dioxide to the diluted second leachate to obtain a third leachate and a third leachate residue, followed by separating same; and (f) concentrating the separated third leachate. According to the present invention, there is an effect of providing a method for recovering lithium, in which cathode active material powder including a cathode active material having an olivine structure is dissolved in an acidic solution and an aqueous hydrogen peroxide solution is added thereto to obtain a leachate to which a calcium compound is then added to precipitate and remove impurities such as Fe, P, etc., followed by adding carbon dioxide to precipitate and remove residual calcium components, thereby increasing the purity and recovery rate of lithium.

This invention provides a method for constructing a human endometrial organoid aging model, belonging to the field of biological model technology. Based on human endometrial organoids, this invention utilizes hydrogen peroxide (H2O2) stimulation to induce a human endometrial organoid aging model. This human endometrial organoid aging model clearly exhibits multiple cellular aging phenotypes, including slowed organoid growth rate, decreased cell proliferation index (Ki67), enhanced SA-β-gal activity, upregulated expression of cell cycle inhibitors P16 and P21, and significantly upregulated gene expression levels of aging-associated secretory phenotype (SASP) components. It can provide an effective tool for screening anti-aging drugs for women, high-throughput and high-content screening, personalized treatment strategy development, and mechanistic research.

The hydrogen peroxide gas sterilizer for the laboratory comprises a shell, a diffusion unit is arranged on the upper portion of the right side in the shell, and a temperature and humidity mechanism capable of automatically adjusting a sterilization space is arranged in the shell. The temperature and humidity mechanism capable of automatically adjusting the disinfection space comprises a diffusion unit, a ventilation unit, a temperature control unit and a filtering unit, and the ventilation unit is arranged on the outer side of the lower portion of the diffusion unit. According to the hydrogen peroxide gas disinfector for the laboratory, by arranging the temperature and humidity mechanism capable of automatically adjusting the disinfection space, the situation that the disinfection effect is affected due to too large humidity in the space and hydrogen peroxide gas is condensed due to too low temperature can be avoided, meanwhile, the low-temperature evaporation mechanism is arranged, hydrogen peroxide gas is generated through low-temperature evaporation, and decomposition of a large amount of hydrogen peroxide can be avoided; in addition, a rapid diffusion mechanism is arranged, in the disinfection process, under the simultaneous action of double fans, hydrogen peroxide gas can be rapidly diffused in the disinfection space, and the space can be disinfected in an all-around mode.

The application discloses a kind of self-assembly nanomaterial and its application in ROS clearance.The self-assembly nanomaterial of the application is denoted as TPP-FFYp-O, and its structural formula is shown as follows:TPP-FFYp-O of the application is specifically cut to generate TPP-FFY-O by alkaline phosphatase (ALP) overexpressed after entering inflammatory cell, TPP-FFY-O is enriched near mitochondrion by the targeting effect of TPP, and is self-assembled to form nanoparticle and stays in inflammatory cell by π-π stacking.Nanoparticle surface enrichment of a large number of TEMPO can convert superoxide radical anion (O2 ·‑ ) in mitochondrion into hydrogen peroxide (H2O2), and then decompose into oxygen and water, thereby significantly reducing the ROS level in inflammatory cell.This enzyme-controlled self-assembly nanoparticle improves the stability of TEMPO and the ability of ROS clearance, and has good application prospect.

The invention relates to a method for synchronously recovering germanium tetrachloride from a metal-state regenerated germanium raw material through oxychlorination, and belongs to the technical field of germanium extraction metallurgy. The method comprises the following steps: mixing a metal-state regenerated germanium raw material with hydrochloric acid in a chlorination distillation kettle, dropwise adding a hydrogen peroxide solution in sections to react with hydrochloric acid to generate a high-activity chlorine species, and directly oxidizing and chlorinating metal germanium to generate germanium tetrachloride. In the process, the reaction is a strong exothermic reaction, a product is distilled out by using heat released by the reaction, and the reaction temperature is controlled at 82-84 DEG C through a cooling medium. And after the reaction is basically completed, carrying out deep distillation through a heating medium, and finally condensing and collecting to obtain a germanium tetrachloride product. According to the method, a traditional multi-step process is integrated into one step, the process is short, alkali liquor does not need to be added, reaction heat is fully utilized, the energy-saving effect is remarkable, the germanium direct recovery rate is high, and the problems that a traditional method is long in process, high in energy consumption, large in auxiliary material consumption and low in direct recovery rate are effectively solved.