328 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 discloses a preparation method of monodisperse nano cerium oxide, and relates to the technical field of rare earth materials. The preparation method of the nano cerium oxide comprises the following steps: S1, adding hydrogen peroxide and a surfactant into a cerium salt solution, and uniformly stirring and mixing to obtain a pre-solution; s2, the pre-solution is adjusted to be in an alkaline environment through an alkaline solution, stirring is conducted for 0.5-1.5 h at the temperature of 60-90 DEG C, slurry is obtained, then suction filtration, washing, drying and calcination are conducted, and cerium oxide powder is obtained. The prepared nano cerium oxide particles are small in particle size, narrow in particle size distribution range and good in dispersity.

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 invention provides a preparation method of an organic polymer photocatalyst and application of the organic polymer photocatalyst in the aspect of photocatalytic synthesis of nitric acid (HNO3) by directly taking nitrogen (N2) and oxygen (O2) as raw materials in water, and additional reagents do not need to be added. It is worthy of notice that the organic polymer photocatalyst (PyOP) shows excellent photocatalytic performance. When O2 is subjected to photocatalytic reduction, the yield of hydrogen peroxide (H2O2) reaches 10147.5 [mu] mol g <-1 > cat, and meanwhile, 672.8 [mu] mol g <-1 > cat of HNO3 can be synthesized by directly utilizing N2 and O2. The preparation method of the photocatalyst provided by the invention is simple, the raw materials are easy to obtain, the preparation cost is low, a metal-free photocatalytic platform only using H2O, N2 and O2 is constructed, and the photocatalyst is used for green and sustainable nitric acid production.

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 discloses a special antibacterial and antioxidant biosensing nano-composite preservative film for fermented food in the technical field of biochemistry, GOx and Lac are synergistically loaded on a nano-carrier to construct a multifunctional composite film, the loading capacity and catalytic efficiency of enzyme are remarkably improved by the high specific surface area and surface active sites of the nano-carrier, and the antibacterial and antioxidant biosensing nano-composite preservative film can be applied to the field of biochemistry. Meanwhile, the synergistic effect of the two enzymes endows the composite membrane with multiple functions: GOx catalyzes glucose to oxidize into hydrogen peroxide (H2O2), Lac catalyzes and oxidizes polyphenol substances, and the combination of GOx and Lac can realize antibacterial, antioxidant and biosensing functions at the same time. In addition, due to the introduction of the porous structure and the matrix material of the nano composite membrane, the mechanical property and the biocompatibility of the membrane are further enhanced, and the application potential of the membrane in food packaging, medical dressing and biosensors is widened.

The utility model provides a hydrogen peroxide preparation device and ceiling equipment with the same. The hydrogen peroxide preparation device comprises a hydrogen peroxide preparation assembly, wherein the hydrogen peroxide preparation assembly at least comprises an electrolysis assembly and a refrigeration assembly; and the pressing assembly is provided with a pressing space, the pressing space is used for containing the hydrogen peroxide preparation assembly, and the height of the pressing space is adjustable so that the hydrogen peroxide preparation assembly can be pressed to the target thickness. By applying the scheme, the refrigeration assembly can condense moisture in air, the electrolysis assembly electrolyzes condensed water to generate hydrogen peroxide, and the pressing space of the pressing assembly is used for containing the hydrogen peroxide preparation assembly and pressing the hydrogen peroxide preparation assembly to the target thickness, so that the internal resistance of the hydrogen peroxide preparation assembly is adjusted to the target size; therefore, the electrolysis assembly can generate large electrolysis current only through a small amount of condensate water, the hydrogen peroxide generation efficiency is higher, and the problem that in the prior art, the hydrogen peroxide preparation efficiency is low is solved.

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 present invention relates to a process for bleaching keratin fibers, in particular human keratin fibers such as hair, comprising sequentially: a) applying to said keratin fibers at least one composition C comprising: i) at least one alkaline agent AA1; ii) at least one peroxygenated salt S1; and iii) hydrogen peroxide; and b) applying to said keratin fibers at least one composition F comprising: i) hydrogen peroxide; ii) optionally at least one peroxygenated salt S2; and wherein composition F is devoid of an alkaline agent, it being understood that step a) may be followed by step b) or step a) may be preceded by step b), preferably step a) is followed by step b).

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 invention relates to a silver-nitrate recovery method comprising the process steps of preparing a nitric-acid solution in a reactor tank and feeding silver sludge into the prepared acid solution to obtain an intermediate product. The silver-nitrate recovery method further comprises introducing N2 onto the intermediate product, sweeping the resulting NOx gases with the introduced N2 and reacting them with H2O2 so as to eliminate them, and collecting the silver nitrate formed in a vessel.

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 relates to the technical field of food detection, in particular to a method for determining the iodine content in formula food for special medical purposes. The determination method comprises the following steps: (1) weighing potassium iodide, and adding water for dissolving to obtain a reference substance working solution; (2) adding water into a test sample to obtain a sample suspension, and performing alkali ashing treatment to obtain a sample solution; (3) adding a sulfuric acid solution and a reagent adopted for alkali ashing treatment into the reference substance working solution, and respectively performing derivatization treatment and organic solvent extraction on the reference substance working solution and the sample solution to obtain a reference substance solution and a test solution; (4) testing by adopting a gas chromatographic method, and calculating the iodine content; reagents adopted in the alkali ashing treatment are a potassium hydroxide solution, a potassium nitrate solution and a potassium permanganate solution (or manganese dioxide); the derivatization treatment comprises the steps of adding a sodium sulfite solution, standing, and adding a ketone reagent and a hydrogen peroxide solution to carry out a derivatization reaction. The method has the advantages of being low in cost, high in safety and high in accuracy.

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.

1. Name of the Design Product: Vaporized Hydrogen Peroxide Sterilization Transfer Chamber. 2. Use of the Design Product: Used for sterilizing the surface of articles and transferring articles from a lower-class clean area to a higher-class clean area. 3. Design Key Points of the Design Product: Lies in the shape. 4. Picture or Photograph Most Indicating the Design Key Points: Perspective View 1. 5. The top of the design product is a part that is not easily visible or invisible during use, so the top view is omitted; the bottom of the design product is a part that is not easily visible or invisible during use, so the bottom view is omitted.

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.