127results about "Hydrogen peroxide" patented technology

The invention provides a multi-aperture two-dimensional covalent organic framework material based on carbon-carbon double bond connection as well as a preparation method and application of the multi-aperture two-dimensional covalent organic framework material. The preparation method comprises the following steps: (1) under a protective atmosphere, putting 6, 6 '-dimethyl-3, 3'-bipyridazine, a multi-aldehyde aromatic monomer and benzoic anhydride into an ampoule bottle, the multi-aldehyde aromatic monomer being selected from a tri-aldehyde aromatic monomer or a tetra-aldehyde aromatic monomer; and (2) quickly freezing the ampoule bottle in the step (1) in a 77K liquid nitrogen bath, carrying out unfreezing circulation degassing through three freezing pumps, carrying out heating reaction at 150-250 DEG C for 72-120 hours, cooling to room temperature, and carrying out post-treatment to obtain the multi-aperture two-dimensional covalent organic framework material based on carbon-carbon double bond connection. The two-dimensional COFs obtained by performing a Navenger condensation reaction on an active methyl monomer and a multi-aldehyde aromatic monomer has relatively high crystallinity, specific surface area and stability, uniform two-dimensional layered morphology and a relatively wide absorption spectrum range, and the topological structure of the COFs comprises a uniform pore diameter and three different pore diameters.

The invention discloses a COF (Covalent Organic Framework) photocatalyst based on accurate regulation and control of benzene ring nitrogen sites as well as a preparation method and application thereof, and belongs to the technical field of COF materials. According to the preparation method, toxic reagents are not needed, high repeatability of a COF structure is achieved by accurately controlling monomer substitution positions, photocatalytic activity and stability in an acid environment are remarkably improved by designing ortho-N-substituted, meta-N-substituted and para-N-substituted COF materials, especially the photocatalytic hydrogen peroxide production rate of ortho-N-substituted oN-COF reaches 3015 [mu] mol.g <-1 >. H <-1 >, and the photocatalytic activity and stability in the acid environment are remarkably improved. The activity is obviously higher than that in the prior art (1.8 mmol.g <-1 >. H <-1 >, namely 1800 mu mol.g <-1 >. H <-1 > reported by Zhang and the like), and the activity is kept 92% after five times of circulation. The process is green and environment-friendly, and is suitable for large-scale production.

The invention provides sustained-release solid hydrogen peroxide as well as a preparation method and application thereof, and belongs to the technical field of hydrogen peroxide preparation, the sustained-release solid hydrogen peroxide comprises a hydrogen peroxide solution, a stabilizer, an excipient and a sustained-release agent, wherein the slow release agent is a compound of ethyl cellulose and chitosan, and the weight ratio of ethyl cellulose to chitosan is (1-2): 1; the addition amount of the slow-release agent is 0.5%-10% of the total mass of the slow-release solid hydrogen peroxide; according to the invention, ethyl cellulose (hydrophobic barrier) and chitosan (pH response degradation) are combined for use in the sustained-release agent, so that overhigh local concentration caused by concentrated release of hydrogen peroxide is avoided, and the explosion risk is reduced; the preparation method provided by the invention is a crystallization-drying integrated process, the production period can be shortened to 4 hours, while the traditional process needs more than 8 hours, and the energy consumption is reduced by 40%.

The invention discloses an all-organic polymer S-type heterojunction photocatalytic material and a preparation method and application thereof.The all-organic polymer S-type heterojunction photocatalytic material comprises a carrier and an organic polymer growing on the surface of the carrier, organic monomers are originally polymerized on the surface of carbon nitride to form an all-organic polymer S-type heterojunction, and the organic monomers are 1, 4-diacetylene benzene, 2, 4-diacetylene benzene and 2, 4-diacetylene benzene. The compound is 3, 5-diacetylene pyridine or 3, 6-diacetylene pyridazine; the preparation method comprises the following steps: (1) adding carbon nitride and a catalyst into a polar alkali solution, and uniformly mixing; and (2) putting an organic monomer into the mixed solution, and carrying out polymerization reaction to generate the all-organic polymer S-type heterojunction photocatalytic material in situ. The carbon nitride is selected as a carrier to be compounded with the organic conjugated polymer, the organic conjugated polymer can be adjusted to be matched with the energy band position of the carbon nitride by changing the molecular structure, an all-organic polymer S-shaped heterojunction is formed, the intramolecular charge transfer rate is higher, and the photocatalytic performance is improved.

The invention discloses a method for preparing hydrogen peroxide through ultralow-temperature photocatalysis. The method comprises the following steps: adding a photocatalytic material into water or a solution, completely dispersing, and adjusting the pH value to obtain a reaction solution; o2 is added into the reaction solution until saturation, and a light source is turned on for a photocatalytic reaction; after the reaction is finished, detecting the concentration of H2O2 by adopting a potassium iodide-ammonium molybdate spectrophotometric method; the photocatalytic material is a semiconductor metal oxide; the temperature of the photocatalytic reaction is-5 to-60 DEG C. According to the method, the catalyst and oxygen are concentrated in micron-sized intergranular water in an ultralow-temperature state, so that the reactant concentration is greatly improved, and hydrogen peroxide generated by catalysis can be quickly desorbed in the ultralow-temperature state, and the decomposition reaction of the hydrogen peroxide can be inhibited, so that the unit mass of the catalyst and the production quantity of the hydrogen peroxide in unit time are remarkably improved.

The utility model discloses a hydrogen peroxide hydrogenation tower with uniform liquid distribution, including a hydrogenation tower body, a liquid inlet pump is installed on the outside of the hydrogenation tower body, a liquid inlet pipeline is installed at one end of the liquid inlet pump, the liquid inlet pump is sealed and connected to a liquid distribution main pipe through the liquid inlet pipeline, a flow control valve is installed on the liquid inlet pipeline, liquid distribution branch pipelines are installed at both ends of the liquid distribution main pipe, a detachable structure is formed between the liquid distribution branch pipeline and the liquid distribution main pipe, a liquid spray head is installed on the lower end surface of the liquid distribution branch pipeline and the liquid distribution main pipe, and an atomizing spray hole structure is arranged on the surface of the liquid spray head. The utility model can quantitatively transport the catalyst liquid used for hydrogen peroxide reaction to the liquid distribution main pipe by using the liquid inlet pump in conjunction with the flow control valve, and then by using the evenly distributed liquid distribution branch pipeline installed in conjunction with the atomizing spray hole structure, the catalyst liquid can be evenly sprayed out, and the hydrogen peroxide can be rapidly hydrogenated in conjunction with the electric heating mechanism to improve the reaction efficiency.

The utility model discloses a gasified hydrogen peroxide supply device which comprises an evaporator, a hydrogen peroxide supply pipeline, a sterile air supply pipeline for atomization and a sterile hot air supply pipeline for gasification. The hydrogen peroxide supply pipeline and the sterile air supply pipeline for atomization are connected with the mist input end of the evaporator, the sterile hot air supply pipeline for gasification is connected with the hot air input end of the evaporator, and the gasified hydrogen peroxide supply device further comprises a descaling pipeline. The hydrogen peroxide evaporation path is covered with the descaling agent conveying path, it is guaranteed that the descaling agent makes contact with all dirt, the dirt is removed along the original gasified hydrogen peroxide generation path, the heat conduction efficiency of the evaporator is maintained, and the gasification quality of the whole gasified hydrogen peroxide supply device is guaranteed.

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.

The invention provides a ketone-enol tautomeric structure catalyst as well as a preparation method and application thereof in photosynthesis of hydrogen peroxide, and belongs to the technical field of catalysts. The preparation method comprises the following steps: mixing a first organic linker, a second organic linker, an acid catalyst and an organic solvent, and carrying out solvothermal reaction to obtain the ketone-enol tautomeric structure catalyst. According to the beta-keto-enamine COFs and the preparation method thereof, keto-enol tautomerism can be effectively adjusted through integration of different amounts of-OH groups in the beta-keto-enamine COFs, so that the visible light absorption capacity and the charge generation efficiency of the COFs are improved. When the keto-enol tautomeric structure catalyst provided by the invention is used for photosynthesis of hydrogen peroxide, water and oxygen can be effectively activated, so that the keto-enol tautomeric structure catalyst shows excellent hydrogen peroxide photosynthesis activity. The result of the embodiment shows that the H2O2 production rate of the ketone-enol tautomeric structure catalyst provided by the invention can reach 3474 mu mol / gcat <-1 > h <-1 >.

A system and method for formulating a medical treatment effluent by performing plasma reactions creating a plasma area in a gas adjacent to a liquid. An embodiment of the plasma reactor includes a housing with an internal reaction chamber, first and second inlet paths to the reaction chamber, and electrodes for producing an electric field. The system may optionally further include a pre-ionization electrode and pre-ionization electric field for pre-ionizing a feed gas prior to entry into a reaction chamber. The reactor uses plasma to ionize gas adjacent with the liquid. The ionized gas reacts with the liquid to form an effluent. Exemplary medical treatments include: immunization (immuno) therapy; wound treatment; cancer treatment; and disinfectant applications.

This invention relates to the field of hydrogen peroxide gel technology, specifically to a hydrogen peroxide gel containing amphiphilic Bola molecules and its preparation method. The gel comprises, by mass percentage: 93-99.4 wt% of a hydrogen peroxide aqueous solution (30-98%); 0.5-5 wt% of a gelling agent; and 0.1-2 wt% of a stabilizer. The gelling agent is an amphiphilic Bola molecule, HDGA, synthesized with glutamic acid as the hydrophilic head group and a long alkyl chain as the hydrophobic chain. The preparation method involves heating and cooling HDGA in a hydrogen peroxide solution system to obtain a hydrogen peroxide hydrogel with a three-dimensional network structure. The preparation method provided by this invention is simple, and the prepared hydrogen peroxide hydrogel exhibits stable low-temperature performance, is easy to store and transport, and shows enhanced flowability after shearing, making it convenient for use.

Decomposition apparatus for hydrogen peroxide, comprising at least one reaction chamber which, when used as intended, contains an immobilized catalyst, characterized in that the catalyst used can be separated from the reaction mixture by decantation.

The utility model discloses a hydrogen peroxide production hydrogenation tail gas recycling device, which belongs to the technical field of hydrogenation tail gas recycling devices and comprises a hydrogenation tower, a hydrogenation tail gas outlet of the hydrogenation tower is connected with a hydrogenation tail gas condenser, and the hydrogenation tail gas condenser is connected with a hydrogenation tail gas condensate receiving tank. A gas phase outlet at the top of the hydrogenated tail gas condensate receiving tank is connected with a hydrogenated tail gas coalescer, a liquid phase at the bottom of the hydrogenated tail gas coalescer is connected with an oil separation tank, a gas phase outlet at the top of the hydrogenated tail gas coalescer is connected with a waste liquid incinerator, and the other path of the gas phase outlet at the top of the hydrogenated tail gas condensate receiving tank is connected with a low-pressure torch; according to the device, aromatic hydrocarbon in tail gas is recycled and enters the waste liquid incinerator, meanwhile, hydrogen is separated out to serve as fuel of the low-pressure torch, resources are saved, and the environment is protected.

The utility model provides a carbon-reduced tail gas recovery device and a hydrogen peroxide production system, and relates to the technical field of batteries. The tail gas recovery device comprises a nitrogen making machine, an air compressor, an activated carbon adsorption tank, a gas storage tank and a first control pipeline, an inlet of the activated carbon adsorption tank is communicated with an outlet of the gas storage tank, an outlet of the activated carbon adsorption tank is communicated with an inlet of the air compressor through the first control pipeline, and an outlet of the air compressor is communicated with an inlet of the nitrogen making machine; and the first control pipeline at least can be switched between a connected state and a disconnected state. When the tail gas discharged by the hydrogen peroxide production system is used as the nitrogen-making raw material gas, only trace trimethylbenzene and other impurities need to be removed at the inlet of the air compressor, and then the tail gas is compressed and enters the nitrogen making machine, so that the device has the advantages of less pollution, low energy consumption, carbon and emission reduction and low cost.

An aqueous composition comprising sulfuric acid, a compound comprising an amine moiety, a compound comprising a sulfonic acid moiety, and a peroxide, the composition being capable of delignifying biomass.

The invention relates to a method and a heating system for heating, in particular a building, with energy that is previously stored in the form of hydrogen peroxide (H2O2) as a long-term chemical energy store. The heating system has a generation unit that generates the hydrogen peroxide from at least water and by means of supplied energy and provides it in an aqueous hydrogen peroxide solution containing water and the hydrogen peroxide dissolved in the water. The heating system also has a storage unit in which the heating system stores the provided hydrogen peroxide solution. The heating system feeds the hydrogen peroxide solution stored in the storage unit into a heating chamber of the heating system and heats the heating water by catalytic exothermic decomposition of the hydrogen peroxide contained in the heating water, releasing heat to the heating water.According to the invention, the heating water in the heating chamber contains manganese hydroxide (Mn(OH)2) which is freely movable in the heating water, in particular which can be swirled up in the heating water, and which accelerates the decomposition of the hydrogen peroxide.

The application provides high-crystalline carbon nitride, a preparation method thereof and application thereof in photocatalytic production of hydrogen peroxide. The preparation method of the high-crystalline carbon nitride comprises the following steps: S1: calcining melamine under a nitrogen atmosphere, and cooling, washing and drying after calcination to obtain bulk-phase carbon nitride; and S2: uniformly mixing potassium chloride, lithium chloride and the bulk-phase carbon nitride, and then calcining under a nitrogen atmosphere, and cooling, washing and drying after calcination to obtain high-crystalline carbon nitride. The high-crystalline carbon nitride has high crystallinity, a large surface area and more active sites, and has excellent photocatalytic performance, which is conducive to efficient photocatalytic production of hydrogen peroxide.

The invention belongs to the field of green chemical industry, and discloses a preparation method of a J-type porphyrin supramolecule (TCPP-LSA-J) with ultra-long near-infrared absorption performance and application of the J-type porphyrin supramolecule in preparation of hydrogen peroxide through photo-thermal catalysis under the condition of no sacrificial agent. The method comprises the following steps: mixing the prepared TCPP-LSA-J with ultrapure water (50.0-100.0 mL), irradiating by a xenon lamp (lambda is greater than or equal to 420 nm) under the conditions of 20-100 DEG C, O2 flow of 25.0-50.0 mL / min and continuous stirring, reacting, filtering and concentrating to obtain a high-concentration hydrogen peroxide aqueous solution. Under the LDH confinement effect, the TCPP molecular layers are arranged in an inclined and staggered mode to form J-type supramolecules, the absorption wavelength is expanded to the second near-infrared region (1750 nm), and efficient utilization of solar energy is achieved. The system does not need an organic sacrificial agent, is green and environment-friendly, takes O2 as an oxygen source, and is safe, low in energy consumption, mild in reaction condition, simple and convenient to operate and high in yield.

The invention discloses a photo-induced self-sacrifice stripping photocatalyst and a preparation method and application thereof, and belongs to the technical field of catalysts.The preparation method of the photocatalyst comprises the following steps that 2, 4, 6-trimethylpyridine and alkyl halide are placed in a first solvent for a reaction, and a monomer ETMP-X is obtained; x is any one of Cl, Br and I; and in an inert atmosphere, putting the monomer ETMP-X, TAPB and a base catalyst into a second solvent, and heating to 100-150 DEG C for reaction to obtain the photocatalyst. The prepared photocatalyst is an ionic covalent organic framework material and has high crystallinity and long-range orderliness, the particle size and thickness of the material can be remarkably reduced by conducting photoinduced self-sacrifice stripping on the photocatalyst, and the stripping process of the material is successfully achieved; in addition, the stripped material is applied to the field of photocatalytic hydrogen peroxide production and is coupled with aerobic oxidation of the benzyl alcohol compound, so that ultrahigh hydrogen peroxide generation rate and higher conversion selectivity of the benzyl alcohol compound are realized.

The invention discloses a carbon nitride photocatalyst with a strong built-in electric field, a high specific surface area and wide spectral absorption, and a preparation method and application thereof, and belongs to the technical field of photocatalyst preparation. The carbon nitride photocatalyst with strong built-in electric field, high specific surface area and wide spectrum absorption is obtained by self-assembling 2, 3-diamino piperazine and carrying out high-intensity ultrasonic field treatment and fused salt auxiliary calcination. 2, 2, 3-diamino piperazine is doped into carbon nitride, n-pi * electron transition is successfully activated, and capture of visible light with the wavelength of 500 nm or above is achieved; due to the existence of a strong built-in electric field, the separation and migration efficiency of photon-generated carriers is improved; ultrasonic treatment and molten salt assistance effectively increase the specific surface area, more active sites are exposed, formation of a quasi-homogeneous photocatalytic system is facilitated, and finally the yield of hydrogen peroxide is remarkably improved. The technological process is simple, the preparation cost is low, operation is safe, and the prepared carbon nitride photocatalyst with the strong built-in electric field, the high specific surface area and the wide spectrum absorption is high in stability and catalytic activity.

The invention discloses a strongly conjugated covalent organic framework material based on a tetrathiophene-anthracene unit as well as a preparation method and application thereof. The preparation method comprises the following steps: S1, reacting and purifying a composition containing 1, 2, 4, 5-tetrabromobenzene for multiple times to prepare ATT; s2, ATT, a pairing reagent and a 6M acetic acid aqueous solution are dissolved in a first solvent for a reaction; when the pairing reagent is TFPPy, COF-ATT is prepared; when the COF-ATTA is TAEPy, COF-ATTA is prepared. Synthesis of two novel COFs with different conjugation degrees is designed based on a tetrathiophene-anthracene structural unit as a raw material, and the two COFs are high in structural rigidity and conjugation degree, have a promoting effect on charge transfer and can improve the conjugation strength of an overall frame structure, so that the light absorption capacity is improved, and rapid transfer of carriers along a molecular skeleton is promoted.

The invention relates to a potassium niobate-cobalt disulfide heterojunction piezoelectric catalyst which is composed of a (001) diffraction crystal face of potassium niobate and a (111) diffraction crystal face of cobalt disulfide. The synthetic method of the potassium niobate-cobalt disulfide heterojunction piezoelectric catalyst comprises the following steps: adding potassium niobate in a solvothermal growth process of cobalt disulfide, and obtaining the potassium niobate-cobalt disulfide heterojunction piezoelectric catalyst through solvothermal. The potassium niobate-cobalt disulfide heterojunction piezoelectric catalyst is applied to synthesis of hydrogen peroxide under an ultrasonic condition. The potassium niobate-cobalt disulfide heterojunction piezoelectric catalyst has the beneficial effects that the potassium niobate-cobalt disulfide heterojunction piezoelectric catalyst is excellent in piezoelectric catalytic performance, and has higher carrier separation efficiency under the synergistic effect of an interface electric field and a polarization electric field in a heterojunction; the yield of hydrogen peroxide synthesized by the potassium niobate-cobalt disulfide heterojunction piezoelectric catalyst under an ultrasonic condition can reach 1560 [mu] m / lg <-1 > h <-1 >.

The invention relates to the field of hydrogen peroxide production, in particular to a hydrogen peroxide decomposition inhibition device for hydrogen peroxide production, which comprises a tank body, the device further comprises a feeding pipe; a cooling cavity is formed in the tank body; the tank body is communicated with a feeding pipe, and the feeding pipe is provided with a feeding valve; the tank body is communicated with a discharge pipe, and the discharge pipe is provided with a discharge valve; the tank body is fixedly connected with a plurality of spring rods I; the telescopic ends of all the spring rods I are jointly and fixedly connected with a cover plate, and the cover plate makes contact with the tank body. The cover plate is fixedly connected with a circular plate, and the circular plate is slidably connected with the interior of the tank body. When the water bag sprays water to dilute the hydrogen peroxide in the leakage area, the electromagnetic valve is controlled to be opened, so that cooling water in the cooling cavity enters the water bag, water in the water bag is cooled, then the hydrogen peroxide in the leakage area is cooled by the cooling water sprayed out of the water bag, and the decomposition rate of the leaked hydrogen peroxide is effectively restrained.

To provide a discharge device capable of discharging highly concentrated ejection product material.SOLUTION: A discharge device 1 ejects ejection product material into the air. The discharge device 1 comprises: a housing 11; a discharge electrode 131; and two protection portions 141 and 141. The discharge electrode 131 projects from the housing 11. The discharge electrode 131 ejects the ejection product material into the air by performing a discharge. Each protection portion 141 is one portion and the housing 11 is another portion. The two protection portions 141 and 141 are provided with the discharge electrode 131 interposed between the two protection portions. Each protection portion 141 includes: a pair of supporting portions 161 and 161; and an electrode protection portion 151. The pair of supporting portions 161 and 161 is provided in the housing. Each supporting portion 161 extends toward a direction separated from the housing 11. A terminal end portion of each supporting portion 161 is arranged at a position more separated from the housing 11 than a distal end portion 13A of the discharge electrode 131. The electrode protection portion 151 connects the terminal end side of one support portion 161 to the other support portion 161.SELECTED DRAWING: Figure 4

The invention relates to a composition comprising: an aqueous solution of hydrogen peroxide; one or more organic carbonates selected from dialkyl carbonates and alkylene carbonates or one or more lactones; and one or more organic acids selected from monocarboxylic acids comprising at least 10 carbon atoms and polycarboxylic acids. The invention also relates to the use of this composition for recycling a material comprising a polyepoxy matrix, as well as to a recycling process for such a material using this composition.

The invention relates to the technical field of photocatalytic material synthesis, in particular to an S-type covalent organic framework-carbon nitride nanosheet photocatalytic material as well as a preparation method and application thereof. The S-type covalent organic framework-carbon nitride nanosheet photocatalytic material is synthesized by electrostatic self-assembly of a carbon nitride nanosheet and a covalent organic framework, the carbon nitride nanosheet and the covalent organic framework form an S-type heterojunction, and the covalent organic framework has a sulfonic acid group. The photocatalytic material provided by the invention is stable in performance structure, and a strong built-in electric field constructed by sulfonic acid groups in the covalent organic framework and a closed hydrogen bond network promote migration of charges. Meanwhile, the covalent organic framework and the carbon nitride nanosheets are mutually crosslinked to form a porous network, so that the specific surface area of the composite material is increased, active sites of the photocatalytic reaction are increased, and the photocatalytic reaction efficiency is enhanced.

The reaction kettle for hydrogen peroxide production comprises a reaction kettle shell, supporting columns are installed on the left side and the right side of the bottom of the reaction kettle shell, shockproof bases are fixedly installed at the bottoms of the supporting columns, a feeding port is formed in the left side of the upper surface of the reaction kettle shell, and an exhaust hole is formed in the right side of the upper surface of the reaction kettle shell. A discharge port is formed in the bottom of the reaction kettle shell, a control valve is arranged on the right side of the discharge port, a partition plate is horizontally arranged on the upper portion of the interior of the reaction kettle shell, a material control disc is arranged above the partition plate, a large gear is fixedly installed on the bottom face of the partition plate, tripods are arranged at the bottom of the large gear, and rotating rods are arranged below the tripods. According to the reaction kettle for hydrogen peroxide production, the material feeding amount is controlled through the material control disc, potential safety hazards caused by material proportioning are prevented, meanwhile, the stirring structure can revolve and rotate at the same time, the stirring range is widened, and hydrogen peroxide production is fully reacted.

The invention discloses a method for preparing a carbon material by using waste melamine resin, aiming at the defects of environmental pollution caused by landfill of the waste melamine resin, difficulty in separation of degradation products and release of toxic gas by pyrolysis, and the method comprises the following steps: dispersing the waste melamine resin in water, adding an acid or alkali catalyst, and fully reacting in a closed reactor at 120-280 DEG C to obtain the carbon material. Separating to obtain a solid-liquid two-phase product; wherein the solid-phase product is a hydrothermal carbon material with photocatalytic performance; and drying the liquid phase part, and roasting at 300-900 DEG C to obtain the heteroatom-doped carbon material with the electro-catalytic property. The method is simple to operate, the product is easy to separate and pollution-free, and the product can be used as a catalyst for photocatalysis and electro-catalysis reaction.

The present application relates to a kind of preparation of ion liquid modified carbon nitride composite and photosynthesis hydrogen peroxide.The present application provides a new type of ion liquid doped carbon nitride photocatalytic synthesis hydrogen peroxide, to solve the existing carbon nitride material photocatalytic synthesis hydrogen peroxide production low and the problem of not high visible light utilization rate.Method: one, the preparation of carbon nitride raw material;Two, the preparation of ion liquid doped carbon nitride sample.The preparation process of the present application is simple and effective, reagent consumption is less and the yield is high;And the photocatalyst provided by the present application can effectively improve the photosynthesis hydrogen peroxide efficiency.The present application is applied to the field of photocatalytic synthesis hydrogen peroxide, and experiment shows that the material has excellent photocatalytic synthesis hydrogen peroxide performance, and the synthesis hydrogen peroxide rate can reach 657 μmol·g ‑1 ·h ‑1 under visible light irradiation.

The invention discloses a transition metal oxyhydroxide modified BiOCl photocatalyst as well as a preparation method and application thereof, and belongs to the technical field of photocatalytic materials. According to the photocatalyst, a BiOCl nano-plate serves as a carrier, transition metal oxyhydroxide MOOH is loaded on the surface of the BiOCl nano-plate, M is at least one of Co, Fe, Mn and Ni, and the mass ratio of MOOH to BiOCl ranges from 1: 20 to 1: 5. The preparation method comprises the following steps: synthesizing a BiOCl nano-plate through a hydrothermal method, dispersing the BiOCl nano-plate in a solution containing sulfate radicals and transition metal ions, and growing MOOH on the surface of BiOCl in situ through a photo-induced deposition method under an alkaline condition. Through surface modification of MOOH, separation and migration of BiOCl photon-generated carriers are effectively promoted, attack of photo-generated holes to Cl in BiOCl crystal lattices is inhibited, photo-corrosion of BiOCl is remarkably reduced, and the structural stability and photocatalytic activity of BiOCl are improved. The catalyst shows excellent performance in the aspects of degradation of organic pollutants (such as glyphosate wastewater) and photocatalytic generation of H2O2, and has the advantages of low cost, simple process and easiness in large-scale production.