64results about How to "Efficient decomposition" patented technology

The invention provides high-naringenin-content modified shaddock peel fiber gel and a preparation method thereof.The preparation method comprises the following steps that after shaddock peel white pulp is subjected to quick freezing and smashing, pretreatment is conducted through an electrochemistry-assisted gradient enzymolysis technology, then customized immobilized naringinase is adopted for treatment, and high-naringenin-content shaddock peel fibers are obtained; and finally, uniformly mixing the fiber with carnosic acid and soybean saponin, and adding magnesium chloride for cross-linking and curing to obtain the modified shaddock peel fiber gel. According to the preparation method, electrochemical assisted gradient enzymolysis is adopted, so that a compact network structure of fibers can be destroyed to increase active sites, the immobilized naringinase not only can efficiently convert naringin and accurately enrich naringenin, but also can effectively improve bitter taste, and magnesium ions regulate and control a multiple cross-linked network formed by the components, so that the gel structure tends to be more stable; meanwhile, naringenin is stably loaded so as to avoid migration and aggregation of the naringenin, and the bioavailability and active efficacy of the naringenin are remarkably improved.

The invention discloses a high-altitude glass curtain wall cleaning device based on an unmanned aerial vehicle, and relates to the technical field of glass curtain wall cleaning, the high-altitude glass curtain wall cleaning device comprises an unmanned aerial vehicle mounting platform, and the unmanned aerial vehicle mounting platform is mounted at the bottom of the unmanned aerial vehicle; the water tank is mounted in the unmanned aerial vehicle mounting platform; the adsorption type cleaning actuator is arranged at the end, away from the water tank, of the unmanned aerial vehicle mounting platform, and the water tank is connected with the adsorption type cleaning actuator through a pipeline; the pushing mechanism is arranged on the unmanned aerial vehicle mounting platform and located between the water tank and the adsorption type cleaning actuator, and a locking mechanism used for separation / connection of the adsorption type cleaning actuator is arranged between the adsorption type cleaning actuator and the pushing mechanism; and the safety rope winding mechanism is arranged in the unmanned aerial vehicle mounting platform and is connected with the adsorption type cleaning actuator. The unmanned aerial vehicle serves as an intelligent transportation platform and is responsible for accurately transporting the integrated adsorption type cleaning actuator to an operation starting point and recycling the integrated adsorption type cleaning actuator.

This invention relates to a method for in-situ synthesis of visible light photocatalytic geopolymers from vanadium-containing solid waste. The technical solution is as follows: vanadium-containing solid waste is ground into powder, and the resulting vanadium-containing solid waste powder is mixed with vanadium pentoxide powder. The resulting vanadium-containing geopolymer precursor is mixed with an alkaline activator and stirred evenly to obtain a vanadium-containing geopolymer slurry. The vanadium-containing geopolymer slurry is placed in a mold, cured, demolded, cured a second time, and crushed to obtain a crushed vanadium-containing geopolymer. The crushed vanadium-containing geopolymer is mixed with deionized water to obtain a vanadium-containing geopolymer aqueous solution. Bismuth nitrate solution is added to the vanadium-containing geopolymer aqueous solution, mixed evenly, and the pH value is adjusted. A hydrothermal reaction is then carried out. Solid-liquid separation, washing, and drying are performed to obtain the visible light photocatalytic geopolymer. This invention can efficiently utilize low-vanadium content and completely eliminate vanadium. The in-situ synthesis of visible light photocatalytic geopolymers from vanadium-containing solid waste not only effectively decomposes organic pollutants under visible light conditions but also effectively fixes vanadium in the vanadium-containing solid waste.

The invention discloses a rotary smokeless open fire moxibustion device, and relates to the technical field of moxibustion health maintenance equipment. The box body is internally provided with a containing cavity, and a pedal extending to an opening is arranged in the containing cavity; a rotary moxibustion therapy assembly and a filtering and purifying assembly are further arranged in the box body. The rotary moxibustion therapy assembly comprises a stepping motor, a transmission gear set and a pomander used for fixing a moxa cone, and the pomander is eccentrically fixed to a rotating piece of the transmission gear set and driven by the stepping motor to rotate around the pedal area. The filtering and purifying assembly comprises a filtering cotton box, a three-way catalyst box and an exhaust port provided with a fan which are communicated in sequence. And the air inlet hole, the accommodating cavity and the filtering and purifying assembly on the box body are sequentially communicated under the driving of the fan to form a directional air circulation passage. The limitation that the traditional moxibustion position is fixed is broken through, and all-directional dead-corner-free physical therapy is achieved; meanwhile, through directional airflow and a multi-stage deep purification system, stable combustion of moxa cones is guaranteed, and environment-friendly zero emission of waste smoke is achieved.

The invention belongs to the technical field of organic fertilizers, and particularly relates to a straw-based biochar composite slow-release fertilizer for saline-alkali soil improvement and a preparation method of the straw-based biochar composite slow-release fertilizer. The preparation method comprises the following steps: (1) uniformly mixing sheep manure and pigeon manure, mixing the mixed manure with crushed corn straw to obtain a total material, inoculating bacillus subtilis, and composting and fermenting to obtain a primary organic matter; (2) fermenting the primary organic matter by using aspergillus niger, trichoderma reesei and saccharomyces cerevisiae to obtain a submerged fermentation organic matter; (3) crushing the submerged fermentation organic matter to prepare particles; the composite coating powder is scattered into the submerged fermentation organic matter, coating is conducted, and the coated organic matter is obtained; and (4) uniformly mixing the coated fermented organic matter, biochar, desulfurized gypsum, humus soil, a water-retaining agent and ammonium dihydrogen phosphate to obtain the straw-based biochar composite slow-release fertilizer for saline-alkali soil improvement. The organic fertilizer can improve the pH value of saline-alkali soil, reduce the salt content and increase the organic matter content.

The present application relates to sewage treatment technical field, specifically to a kind of acrylonitrile sewage treatment device, comprising: microbial purification tank, exhaust mechanism, the exhaust mechanism has two and symmetrically set in the two sides of the inner wall of microbial purification tank width direction, the exhaust mechanism includes the cavity plate fixedly connected in the inner wall of microbial purification tank. By cavity plate, partition block and air separation assembly in exhaust mechanism, air can be injected and extracted into microbial purification tank, so as to provide corresponding purification environment for aerobic microorganism or anaerobic microorganism to purify sewage, and then realize that when injecting air, air exposure area and immersion area can inject air into microbial purification tank simultaneously to provide sufficient oxygen for aerobic microorganism to purify sewage, help its efficient decomposition of pollutants in sewage, while when extracting air, air separation assembly disconnects the communication of air exposure area and immersion area, so that suction airflow is only discharged from air exposure area, avoid sewage from flowing out with cavity plate, while avoiding suction airflow from immersion area to interfere with anaerobic environment in tank.

The application discloses an aquaculture tail water treatment system and a use method thereof, which comprises a tail water storage tank, a high-pressure treatment unit, a photocatalytic reactor and a control unit. The high-pressure treatment unit comprises a supercritical water reactor, a controller connected with the control unit, a temperature sensor installed on the supercritical water reactor, a pressure sensor and a viscosity monitor used for monitoring the viscosity of tail water. The controller is used for receiving data collected by the temperature sensor and the pressure sensor. The supercritical water reactor has two different environmental states, i.e. a subcritical water environment and a supercritical water environment. The control unit adjusts parameters in the supercritical water reactor and switches the two different environmental states. The solubility of mucus, gonad hormones, organic matters and other impurities in tail water can be enhanced, and the macromolecular network structure and proteins in the impurities can be effectively destroyed, so that more efficient decomposition is realized.

The invention discloses an integrated micro-fluidic chip system for detection, photothermal decomposition and verification of perfluorinated and polyfluoroalkyl substances. The integrated micro-fluidic chip system comprises an upper ultraviolet light-emitting layer, a middle micro-fluidic main body layer and a lower constant-temperature heating layer, the middle microfluidic main body layer internally comprises an inlet channel, an optical detection module, a photothermal decomposition chamber, a circulating pump structure, a residue verification chamber and an outlet channel; the upper ultraviolet light-emitting layer and the lower constant-temperature heating layer are respectively arranged corresponding to the photothermal decomposition chamber so as to provide a light field and a thermal field which have a synergistic effect; the system further comprises an external control circuit for controlling the operation of the circulating pump structure, the upper ultraviolet light-emitting layer and the lower constant-temperature heating layer, and controlling the path selection of the fluid according to the output result of the residual verification chamber, so as to realize a closed-loop treatment flow. According to the three-layer micro-fluidic chip system provided by the invention, efficient and reliable treatment on perfluoro and polyfluoroalkyl substances is realized through photo-thermal synergistic degradation and closed-loop feedback control.

The utility model relates to the technical field of bricks, and particularly discloses a low-carbon environment-friendly self-cleaning brick which comprises a brick body, a photocatalytic film layer, a biochar layer and a water permeable layer are respectively arranged on the top surface of the brick body, a waterproof layer is arranged on the bottom surface of the brick body, the photocatalytic film layer is made of titanium dioxide, the biochar layer is made of biochar, and the water permeable layer is made of water. According to the low-carbon environment-friendly self-cleaning brick, the photocatalytic film layer, the biochar layer and the water permeable layer are arranged on the top face of the brick body, harmful gas in air can be effectively decomposed, pollutants can be strongly adsorbed, rainwater can be promoted to permeate rapidly, and therefore the low-carbon environment-friendly self-cleaning brick has the advantages of being environmentally friendly, environmentally friendly and capable of being recycled. And the waterproof layer arranged on the bottom surface of the brick body effectively prevents water in the brick body from leaking to the outside of the brick body, so that damages such as corrosion, deformation and the like of a building structure caused by accumulated water erosion are reduced, the durability is improved, and the practicability is high.

The present application relates to the technical field of steviol production, and particularly relates to a steviol wastewater treatment method, which comprises the following steps: collecting, adjusting and treating wastewater, hydrolyzing, blowing off, one-time settling, water distribution, anaerobic reaction, activated sludge pool and two-time settling, so that the organic matters in the wastewater are effectively decomposed, and the wastewater treatment efficiency is improved.

The utility model relates to the technical field of curtain walls, in particular to a high-energy-saving unit type curtain wall structure which comprises photovoltaic glass, a ceramic aluminum acoustic panel, a rubber and plastic heat preservation layer, an aluminum silicate heat preservation layer, an inorganic active heat preservation layer, an aluminum alloy connecting strip and a butt joint plate with an inner groove. The rubber and plastic heat preservation layer is in adhesive connection with the inner surface of the photovoltaic glass through hot melt adhesive, the outer surface of the aluminum silicate heat preservation layer is in adhesive connection with one side of the rubber and plastic heat preservation layer, and the outer surface of the inorganic active heat preservation layer is in adhesive connection with one side of the aluminum silicate heat preservation layer. According to the high-energy-saving unit type curtain wall structure, the photovoltaic glass not only serves as a building envelope, but also can convert solar energy into electric energy, partial self-supply of building energy is achieved, and the nanometer titanium dioxide coating in the inorganic active heat preservation layer has the photocatalysis effect under the illumination condition and can effectively decompose formaldehyde, VOCs and other harmful gases.

The application discloses a method for extracting lithium, cesium and rubidium from pegmatite lithium concentrate, comprising the following steps: step 1, uniformly mixing mixed roasting additives with pegmatite lithium concentrate to obtain a mixture; step 2, performing alkali roasting on the mixture to obtain a calcine containing lithium, rubidium and cesium; step 3, finely grinding the calcine containing lithium, rubidium and cesium, and then adding a leaching agent to leach the calcine to obtain a solution containing lithium, rubidium and cesium; and step 4, extracting lithium, rubidium and cesium from the solution containing lithium, rubidium and cesium. By adding mixed roasting additives to the pegmatite lithium concentrate raw material, low-temperature alkali roasting can be realized. In addition, the method provided by the application can be used for large-scale industrial production, is energy-saving and environment-friendly, low in cost, and has a wide popularization prospect.

The invention provides a method for determining the content of precious metal elements in an automobile purification catalyst, and belongs to the technical field of analysis and detection. According to the method, a composite melting system composed of sodium peroxide, anhydrous sodium metaborate and sodium tungstate is constructed, an automobile purification catalyst sample is subjected to efficient melting decomposition, complete leaching of a melt is achieved in combination with a hydrochloric acid and tartaric acid composite acidification system, a tin-tellurium coprecipitation enrichment technology is introduced on the basis, and the purity of the automobile purification catalyst sample is improved. Trace precious metal elements such as platinum, palladium and rhodium are selectively precipitated and effectively enriched, and matrix interference is remarkably reduced; and then adding an indium internal standard solution and carrying out quantitative determination by adopting inductively coupled plasma emission spectrometry, thereby realizing high-sensitivity and high-accuracy analysis of the noble metal element. The method effectively solves the problems of incomplete sample decomposition, low precious metal recovery rate, serious matrix interference, poor detection result stability and the like in the prior art.

The present application relates to the technical field of environmental protection water treatment, in particular to a preparation method and application of one-step aluminum modified fish scale calcium defluorination material; the present application successfully prepares the defluorination material with economy and high efficiency by combining hydrochloric acid demineralization pretreatment with sodium metaaluminate one-step modification process; the removal rate of the composite material prepared by the present application to 10mg / L fluoride ion solution can reach 94.76%, the theoretical maximum adsorption capacity reaches 118.53mg / g, the actual test adsorption capacity reaches 9.56mg / g, and the stable and efficient adsorption performance is maintained in the pH 3-6 range; the process of the present method is simple, the reaction conditions are mild, and the material preparation cost is significantly reduced, which provides an innovative solution with practicability and economy for fluorine-containing wastewater treatment.

The application relates to a sulfide nickel heterojunction modified Prussian blue analogue hollow nanocage catalyst and a preparation method and application thereof. A normal-pressure one-step reflux method is used to perform synchronous etching and sulfidation treatment on a NiFe Prussian blue analogue by using thioacetamide and urea, a NiS2 heterojunction and a hollow nanocage structure are in-situ constructed, the purpose is to implement electronic structure pre-regulation on a metal active center by using the NiS2 heterojunction, to reduce a reconstruction energy barrier and to pre-optimize the electronic structure of an active phase after reconstruction, and meanwhile, the hollow structure promotes deep reconstruction from the surface to the inside. The catalyst prepared by the application has excellent oxygen evolution reaction activity and kinetics, and has high stability and high-efficiency solar-driven water splitting performance.

This invention belongs to the field of food technology, specifically relating to a fermented tomato cube and its preparation method. The preparation method includes the following steps: (1) Peel and seed fresh tomatoes, cut them into cubes, sterilize them, and place them in a sterile fermentation container. First, add *Lactobacillus casei*, mix evenly, and anaerobic ferment. Then, add *Lactobacillus rhamnosus*, mix evenly, and continue anaerobic fermentation. After sterilization, fermented tomato cubes are obtained; (2) Wash and peel onions, cut them into cubes, and pre-cook them to obtain pre-cooked onion cubes; (3) Mix the fermented tomato cubes, pre-cooked onion cubes, and seasonings evenly, cook at 80-85℃ for 20-25 minutes, and cool to room temperature to obtain fermented tomato cubes. The preparation method of this invention can ensure the efficient increase of total phenols in fermented tomato cubes while reducing the degradation of lycopene, achieving synergistic optimization of the nutritional quality of fermented tomato cubes, and improving the sensory quality of the final product.

This invention relates to the field of coatings, specifically to a wear-resistant, formaldehyde-removing artistic coating and its preparation method. The coating, by weight, comprises: 45-55 parts of waterborne polyurethane-modified acrylic emulsion, 15-25 parts of silane-modified filler, 4-8 parts of supported formaldehyde-removing filler, 6-12 parts of pigment, 0.2-0.6 parts of dispersant, 0.1-0.4 parts of defoamer, 0.3-0.8 parts of thickener, 1-3 parts of film-forming aid, and 15-25 parts of deionized water. This invention achieves a balance between film hardness and toughness by using waterborne polyurethane-modified acrylic emulsion as the film-forming substance and combining it with silane-modified filler. The polyurethane segments provide excellent flexibility and resilience, the acrylic segments provide high hardness, and the silane-modified filler forms a strong chemical bond with the resin matrix through a silane coupling agent, improving the overall performance of the coating and extending its service life.

The present application relates to air purification technical field, especially to a kind of purification equipment for removing coating formaldehyde, including shell, mounting plate fixedly connected in the cavity of shell.The present application is provided with self-cleaning mechanism, driving motor drives scraper to rotate around filter assembly, and cooperate with spiral conveying roller, dust scraped is automatically transported into collection box, realize the automatic cleaning of filter screen surface, effectively avoid filter screen blockage, ensure the persistence of filtering efficiency, by setting air flow guiding mechanism, servo motor drives rotating ring, on the one hand, drive fan blade to rotate, form auxiliary air flow, enhance air flow, on the other hand, through swing component drive air jet cylinder up and down swing, make air flow evenly into air duct, prolong the residence time and contact area of air flow in photocatalyst area, by setting photocatalyst decomposition mechanism, UV lamp irradiates photocatalyst coating in air duct, improve the purification efficiency and thoroughness of formaldehyde.

The application belongs to the technical field of solar photovoltaic materials, and particularly discloses a preparation method of phosphorus-doped silicon master alloy. A double-temperature-zone horizontal furnace is used, and zinc phosphide is used as a dopant. A sealed quartz horizontal ampoule is arranged in the double-temperature-zone horizontal furnace. A graphite boat is arranged in the high-temperature section of the quartz horizontal ampoule, and polycrystalline silicon material is arranged in the graphite boat. A quartz crucible is arranged in the low-temperature section, and zinc phosphide is arranged in the quartz crucible. Different temperatures of the high-temperature section and the low-temperature section are set, and the temperature is kept for a period of time, and then the temperature is reduced to obtain the phosphorus-doped silicon master alloy. The speed of synthesizing the phosphorus-doped silicon master alloy is fast, the method is safe and reliable, the requirement for equipment is low, and the manufacturing cost of the phosphorus-doped silicon master alloy is greatly reduced.

The invention discloses an ammonia decomposition hydrogen production catalyst and a preparation method and application thereof, and belongs to the technical field of catalytic chemistry and hydrogen energy. According to the preparation method of the catalyst for hydrogen production through ammonia decomposition, the problems that an existing catalyst is poor in low-temperature activity and low in mass transfer efficiency are solved through process optimization such as carrier circulation modification and two-stage roasting. The prepared catalyst is high in activity, can realize efficient decomposition of NH3 at low temperature, is wide in adaptive airspeed, can still realize high conversion rate of NH3 at high airspeed, has ammonia decomposition conversion rate of more than or equal to 90% under the conditions of 400-550 DEG C, normal pressure and ammonia airspeed of 1000-30000 ml / g.h, and has remarkable industrial value.

The utility model discloses a kind of cement kiln household garbage three-way kiln disposal device, including kiln body and respectively being arranged at kiln body two ends kiln head combustion chamber and kiln tail smoke chamber, the top of kiln tail smoke chamber is sequentially connected with rising flue and decomposition furnace, the outside of kiln body is provided with combustible garbage warehouse, non-combustible garbage warehouse and waste gas waste liquid warehouse, combustible garbage warehouse is communicated with kiln head combustion chamber by conveying pipeline, non-combustible garbage warehouse is communicated with kiln body kiln tail by conveying pipeline, the gas phase space of waste gas waste liquid warehouse is communicated with decomposition furnace by conveying pipeline, the liquid phase space of waste gas waste liquid warehouse is connected with filter by conveying pipeline, the liquid outlet of filter is communicated with rising flue by pipeline, the filter residue outlet of filter is communicated with kiln tail smoke chamber by pipeline. Above all, the utility model has the advantages of not producing waste residue, good disposal effect, and can be applied on a large scale.

The application relates to the technical field of sewage treatment, in particular to a sewage purification treatment device based on high-voltage discharge plasma, which comprises a treatment frame, the inside of the treatment frame is sequentially fixedly provided with a liquid guide frame, a liquid filter plate frame one, a dynamic discharge module, a liquid filter plate frame two and a liquid discharge frame from top to bottom, the liquid guide frame, the liquid filter plate frame one, the dynamic discharge module, the liquid filter plate frame two and the liquid discharge frame are sequentially communicated to form a sewage purification channel; the same side surfaces of the liquid filter plate frame one and the liquid filter plate frame two are detachably connected with a dynamic material pushing module; the application can solve the problems of poor adaptability, low purification efficiency and complicated operation and maintenance of traditional devices by means of physical filtration, dynamic plasma chemical purification and automatic impurity removal technology, can actually improve the sewage purification efficiency, can greatly enhance the adaptability to different water quality conditions, can simplify the operation and maintenance process, and can reduce the operation difficulty and cost.

The application discloses a multi-unit cooperative action resource scheduling method and device, relates to the technical field of resource scheduling, and comprises the following steps: receiving an emergency rescue request containing an incident location and an event level, determining an initial task area and required resource types by matching with a scheduling case library; evaluating the health state and task load of available rescue units based on a resource state database, and then acquiring dynamic attributes and spatial position information of the rescue units; decomposing a rescue task in combination with the initial task area and unit information, generating a plurality of rescue sub-tasks which are functionally parallel or serial; assigning appropriate rescue units to each sub-task through a task allocation decision model and forming a task sequence; and finally, distributing the encrypted task sequence to corresponding units in a safe manner to execute rescue. Through the above method, the method realizes quick response, intelligent decomposition and efficient cooperation of the rescue task, and improves the timeliness, accuracy and overall rescue success rate of resource scheduling.

The present application belongs to the technical field of material chemistry and environmental governance, and discloses a plant decomposition type deodorant formula and a configuration method. In view of the defects of the existing deodorization technology, such as secondary pollution, slow effect, only masking odor, insufficient product stability and the like, the present application uses tea polyphenol extract, yucca extract, grape seed extract, various plant essential oils and other pure natural plant extracts as raw materials, does not contain chemical synthetic additives, and is prepared through a standardized process of precise control of constant temperature environment, grading stirring speed, step-by-step feeding and reaction time. The deodorant can target decomposition of various foul-smelling molecules, has the effects of bacteriostasis and oxidation resistance, is completely deodorized, has strong product stability, is safe and non-irritating, has no secondary pollution, and can be widely applied to foul odor treatment in multiple scenes such as livestock breeding, garbage treatment, sewage treatment, public environment and the like.

The invention provides an electrochemical device and electronic equipment, the electrochemical device comprises a positive electrode, a negative electrode and a diaphragm, the diaphragm comprises a base film and a coating layer, the coating layer comprises a first coating layer and / or a second coating layer, the coating surface density of the first coating layer is a g / m < 2 > / mu m, the coating surface density of the second coating layer is b g / m < 2 > / mu m, an electrolyte contains a fluorosulfonamide compound, and the electrolyte contains an electrolyte. The mass content of the fluorosulfonamide compound in the electrolyte is c%, and the binding power efficiency of the electrolyte is M; the following relational expression is satisfied: M = 25% * a + 75% * b; c / M is greater than or equal to 2.67 and less than or equal to 49.52; through the synergistic effect of the coating layers on the two sides of the diaphragm, the cycling stability, the rate capability and the safety of the battery are improved, meanwhile, the lithium dendrite penetration risk is effectively inhibited, and good dimensional stability is kept under the high-temperature condition; by synergistically limiting the coating surface density of the first coating layer and the second coating layer and the mass content of the fluorosulfonamide compound, the cycling stability, the interface compatibility and the high-temperature storage performance of the lithium ion battery can be remarkably improved.

The utility model discloses a kind of thermal plasma nitrogen oxide processing devices, including processing device, the inside of processing device is separated into independent nitrogen oxide waste gas unit and waste gas reaction unit by fixed partition, the fixed partition is provided with multiple through channels and inlay thermal plasma torch, it is through two units, flame end is stretched to waste gas reaction unit, the other end is to nitrogen oxide waste gas unit, constitute gas only passage. By partition isolation, horizontal torch array and similar "double horn" flow channel, nitrogen oxide molecular bond is efficiently broken in short time;Simultaneously, material and structure integration break cooling dependence, so that industrial grade denitration equipment first has three breakthroughs of land occupation halving, multiple pollutants collaborative treatment and zero secondary pollution.

This invention provides an apparatus for preparing isocyanates, comprising: a heater; a reaction vessel disposed within the heater, the reaction vessel including at least a first opening, a second opening, and a third opening, each opening connecting the inside and outside of the reaction vessel; a gas input pipeline connected to the first opening; a condenser connected to the second opening; a receiving bottle connected to the end of the condenser away from the second opening; a distillation column connected to the third opening; a condenser with its inlet connected to the end of the distillation column away from the third opening and its outlet returning to the distillation column; a vacuum pump including at least a first inlet and a second inlet, the first inlet connected to the condenser and the second inlet connected to the condenser; and a gas output pipeline connected to the outlet of the vacuum pump. The preparation apparatus provided by this invention can solve the problems of low product yield, high purification difficulty, high reaction energy consumption, and high production cost.

This invention discloses a method for preparing an amphiphilic photocatalyst using carbon nitride-supported metal oxides and its application in the aqueous-phase benzene hydroxylation reaction. This catalyst not only retains the unique amphiphilicity of carbon nitride, improving the interfacial contact and mass transfer process between the water / benzene phases and promoting the rapid and efficient transfer of •OH generated in the aqueous phase to benzene to participate in the reaction, but also forms a good interfacial contact between the metal oxide and carbon nitride phases during molten salt heat treatment. Under illumination, photogenerated electrons can efficiently migrate from carbon nitride to the surface of the metal oxide, driving the rapid photo-Fenton reaction. Therefore, this catalyst exhibits excellent catalytic performance in the photocatalytic aqueous-phase benzene hydroxylation reaction to prepare phenol. This invention does not require the addition of additional organic solvents and can achieve a highly efficient benzene hydroxylation reaction in a pure aqueous phase, conforming to the concept of green chemistry and showing good prospects for industrial application.

The invention discloses an air purification device, air treatment equipment and a control method and device thereof. The air purification device comprises an air guide plate, the air guide plate is provided with a plurality of ventilation holes, and a catalyst is arranged on the windward side of the air guide plate; and the energy source is arranged opposite to the air guide plate and arranged to be capable of being powered on to generate purification substances, and the purification substances are arranged to be capable of achieving the synergistic effect with the catalyst for air purification. According to the scheme, the peculiar smell in the space can be effectively removed, consumables do not need to be replaced regularly, a compressor does not need to be started for refrigeration and heating operation, the use cost of a user is reduced, and the use experience of the user is improved; and air purification can be carried out in the process that the air treatment equipment operates in other modes, air purification can also be carried out when the air treatment equipment is not in the working state, the full-time air purification function of the air treatment equipment can be conveniently achieved, and the requirement of the air purification mode for the state of the air treatment equipment is lowered.

This invention provides a method, apparatus, and storage medium for detecting voids in the inner layer of concrete. The method includes: acquiring echo signals from the area of ​​concrete to be inspected; calculating the quadratic penalty factor α and the number of decomposition layers k of a variational mode decomposition algorithm based on the echo signals and a sparrow search algorithm, with the objective function being the minimum fitness function value, to obtain a parameter combination (k, α); wherein the fitness function is constructed based on power spectral entropy, error severity index, and center frequency evaluation index; decomposing the echo signals using the variational mode decomposition algorithm according to the parameter combination (k, α), obtaining k echo signal modal components; calculating the autocorrelation function of each echo signal modal component in the k echo signal modal components; and determining the detection result of voids in the area of ​​concrete to be inspected based on the autocorrelation function of each echo signal modal component. This invention offers high detection accuracy and speed, meeting the needs of concrete defect detection.