15 results about "Hypobromous acid" patented technology

The invention discloses a copper-doped cerium oxide antifouling agent and a preparation method and application thereof.The antifouling agent takes cerium oxide as a main body material, copper is introduced for doping, Cu < 2 + > partially replaces Ce < 4 + > to enter crystal lattices, charge imbalance is caused, more oxygen vacancies are induced to be generated, meanwhile, reduction conversion from Ce < 4 + > to Ce < 3 + > is promoted, and formation of the oxygen vacancies is further stabilized. The oxygen vacancies obviously enhance the surface catalytic activity of the material, H2O2 and Br <-> in seawater can be efficiently catalyzed to generate hypobromous acid (HOBr) with a bactericidal effect, the function of natural halogenated peroxidase is simulated, and long-acting and environment-friendly biological antifouling is realized. The antifouling agent provided by the invention can be synthesized by adopting a hydrothermal method, is simple and convenient in process, is suitable for large-scale preparation, is suitable for various marine environment antifouling scenes such as hulls, marine engineering equipment and underwater sensors, and has a good application prospect.

The present invention relates to the preparation and use of high-entropy nanozymes with multi-pathway synergistic antibacterial effects, belonging to the field of nanozyme catalytic materials. The present invention, for the first time, utilizes a hydrothermal method and high-temperature calcination method to synthesize oxygen-vacancy-rich high-entropy oxides with haloperoxidase-like, peroxidase-like, and glutathione oxidase-like activities. These oxides can catalyze bromide ions and hydrogen peroxide to generate hypobromous acid, which interferes with bacterial quorum sensing, and hydroxyl radicals, which disrupt structure and function. Furthermore, these oxides consume glutathione, which maintains the internal redox balance of bacteria. This allows for multi-pathway synergistic and efficient bacterial damage and inactivation, helping to address the problems of existing antifouling nanozyme materials, which suffer from a single catalytic pathway and poor component adjustability. This allows for the practical expansion of high-entropy nanozyme coatings, and has potential application prospects in the field of marine biofouling.

The invention provides a single-molecule fluorescent probe based on a BODIPY derivative BP-BNO2 as well as a synthesis method and application of the single-molecule fluorescent probe, and the specific Chinese name of the derivative is 5, 5-difluoro-1, 3, 7, 9-tetramethyl-10-(4-nitrophenyl)-5H-4 lambda 4, 5 lambda 4-dipyrrolo [1, 2-c: 2 ', 1'-f] [1, 3, 2] diazaborane. The invention also provides a synthesis method of the derivative and application of the derivative in detection of hypobromous acid in vitro, cells and nasal cavities of mice with allergic rhinitis. According to the method, on the basis of a derivative BP-BNO2 of BODIPY, the concentration change of hypobromous acid is detected through a fluorospectro photometer in a mixed solution of a phosphate buffer solution and acetonitrile (the volume ratio is 7: 3). The method also realizes noninvasive in-situ imaging at cell and mouse levels, and can be used for in-situ monitoring of hypobromous acid level in the nasal cavity of the mouse with allergic rhinitis and auxiliary diagnosis of allergic rhinitis.

Provided is a water treatment method and the like that enables stable management of water systems. [Solution] According to one aspect of the present invention, there is provided a water treatment method for an aqueous system, comprising a supplying step and a control step, in which the supplying step supplies hypochlorite ions to the aqueous system to be treated, the aqueous system containing a bromide salt and a chlorine stabilizer, and the control step controls the concentration of hypobromite ions in the aqueous system to be treated at one or more of the timings before, during, and after the supplying step.

The invention belongs to the technical field of electro-catalysis, and discloses a method and device for preparing ethylene oxide through cathode and anode coupling electro-catalysis, and the method comprises the following steps: obtaining an electrolyte containing hydrogen peroxide in a cathode electrolytic cell; feeding the electrolyte containing hydrogen peroxide into a cathode reaction tank; electrolyte containing potassium hypobromite is obtained in an anode electrolytic cell; feeding the electrolyte containing potassium hypobromite into an anode reaction tank; in a cathode reaction tank, obtaining a reaction solution containing ethylene oxide; feeding the reaction liquid containing ethylene oxide into a reaction liquid flow mixing tank; in an anode reaction tank, obtaining a reaction solution containing a bromoalcohol intermediate; feeding the reaction liquid containing the bromoalcohol intermediate into a reaction liquid flow mixing tank; carrying out saponification reaction on the bromo-alcohol intermediate in the mixed flow tank; and after the saponification reaction is finished, carrying out reduced pressure distillation on the mixed solution to separate out ethylene oxide gas, and respectively feeding the liquid into an external catholyte tank and an external anolyte tank. The method improves the energy utilization rate.

A treatment liquid for a semiconductor containing a group 6 metal, the treatment liquid containing hypobromite ions. Also provided is a treatment liquid for a semiconductor containing a group 6 metal, the treatment liquid characterized by being formed by adding and mixing at least a bromine-containing compound, an oxidizing agent, a base compound, and water, wherein relative to a total mass, an added amount of the bromine-containing compound is 0.008 mass % or more and less than 10 mass % as an amount of bromine element, and an added amount of the oxidizing agent is 0.1 mass ppm or more and 20 mass % or less; and pH at 25° C. is 8 or higher and 14 or lower. Further provided is a method for producing the treatment liquid for a semiconductor.

The invention belongs to the technical field of green electrochemistry, and particularly relates to a synchronous electrooxidation reduction bromine extraction method which is carried out in an electrolysis device composed of an anode electrolytic tank and a cathode electrolytic tank, and the anode electrolytic tank and the cathode electrolytic tank are separated through a diaphragm; the method comprises the following steps: S1, introducing a bromine-containing raw material solution into an anode electrolytic tank; s2, adding an electrolyte into the cathode electrolytic tank; s3, applying oxidation potential to the working electrode, and carrying out electrochemical oxidation reaction to generate bromine molecules; s4, blowing out bromine molecules and carrying the bromine molecules into a cathode electrolytic tank; s5, the bromine molecules are subjected to a disproportionation reaction in the cathode electrolytic tank, and bromine ions and hypobromite ions are generated; the hypobromite ions are subjected to an electrochemical reduction reaction to generate bromide ions and hydroxyl ions; s6, continuously carrying out reactions in the steps S3 to S5; and S7, obtaining a concentrated bromine salt solution from the cathode electrolytic tank. The method provided by the invention realizes greenization and high efficiency of the bromine extraction process.

Disclosed herein is a method of extracting metal from a metal sulfide containing material comprising the steps of: a) providing an aqueous acidic oxidant mixture comprising water, an acid, an oxidising means, and a halide ion source, wherein the aqueous acidic oxidant mixture has a pH of less than 7; wherein the oxidising means comprises hydrogen peroxide, ozone, oxygen, chlorine, bromine, iodine, hypochlorous acid, hypobromous acid, hypoiodous acid, a hypochlorite salt, a hypobromite salt, a hypoiodite salt, a percarbonate salt, a persulfate salt, a permanganate salt, an anode connected to a power source, or combinations thereof; b) contacting the aqueous acidic oxidant mixture with the metal sulfide containing material to extract the metal from the metal sulfide containing material and form a metal halide solution; wherein the metal comprises copper, nickel, lead, zinc, or combinations thereof.

The invention provides a dithiothreitol preparation method, which comprises: carrying out an addition reaction on butadiene and hypobromous acid, and refining to obtain 1, 4-dibromo-2, 3-butanediol; and adding hydrosulfide to carry out substitution reaction to obtain the dithiothreitol. According to the method, the synthesis route is greatly shortened, byproducts are few, the yield is improved, the product purity can reach 99% or above, and the cost is low; meanwhile, the intermediate is high in stability, high in purity and easy to store, the generation of intermediates which are extremely high in corrosivity and susceptibility to allergy is avoided, and the preparation method has great advantages on industrial enlarged production and environmental protection.

Methods for treating water in a water system to reduce the amount of trihalomethanes (“THM”) in the water. The methods include combining with the water a stabilized halogen biocide that is stabilized with at least one of sulfamic acid and a hydantoin in sufficient amounts so that the water has a residual total halogen amount that is from 0.1 ppm to 50 ppm, for example. The THM in the treated water can be significantly reduced as compared to treatments in which hypochlorous acid and / or hypobromous acid are the only antimicrobial agents.

The invention discloses a method for improving Faraday efficiency of bromine ion mediated styrene epoxidation. According to the method, a bromine ion mediated styrene photoelectrocatalysis epoxidation reaction is carried out by utilizing a three-electrode system taking alpha-Fe2O3 as a working electrode, bromine ions are oxidized in a photo-anode local acid environment to generate hypobromous acid under the condition of no stirring, and then styrene is oxidized by the hypobromous acid to generate epoxy with high selectivity and high Faraday efficiency. The method is simple, easy to operate and low in cost, and has certain universality for styrene substrates.

Methods for treating water in a water system to reduce the amount of trihalomethanes ("THM") in the water. The methods include combining with the water a stabilized halogen biocide that is stabilized with at least one of sulfamic acid and a hydantoin in sufficient amounts so that the water has a residual total halogen amount that is from 0.1 ppm to 50 ppm, for example. The THM in the treated water can be significantly reduced as compared to treatments in which hypochlorous acid and / or hypobromous acid are the only antimicrobial agents.

A semiconductor processing liquid comprising a carboxylic acid and a hypohalite ion, wherein the concentration of the carboxylic acid is 0.0001-1.0 mol / L, the hypohalite ion is at least one selected from the group consisting of hypochlorite and hypobromite ions, the concentration of the hypohalite ion is 0.0001-3.0 mol / L, and the pH of the semiconductor processing liquid at 25°C is 7.0-14.0.

The invention relates to a preparation method and application of a hypobromous acid ratiometric fluorescent probe capable of targeting mitochondria. The probe can selectively and quickly react with HOBr through a specifically designed molecular structure, and generates ratio type fluorescence signal change, so that high-sensitivity detection of endogenous / exogenous HOBr of mitochondria in cells is realized. The long emission wavelength (gt; 600nm), low cytotoxicity and excellent co-localization performance (the mitochondrial localization coefficient is greater than or equal to 0.97), and is suitable for dynamic imaging analysis of living cells. The invention also provides a simple synthesis method of the probe.

Provided is a treatment liquid for treating a semiconductor wafer in a semiconductor forming process, the treatment liquid containing (A) a hypobromite ion, (B) a pH buffer, and (C) an onium ion represented by formula (1):(wherein R1, R2, R3, and R4 each independently denote an alkyl group having carbon number from 1 to 25,)