509 results about "Xenon lamp" patented technology

The invention relates to the technical field of aging detection, and discloses a xenon lamp simulation environment aging detection method and system for a water-based waterproof material. The method comprises the following steps: testing a water-based waterproof material sample in an aging detection platform and collecting first aging response data; calculating a characteristic spectrum drift parameter combination in combination with the first aging response data, and solving a multi-factor aging dynamics equation set to obtain three-dimensional environment field data; inputting the three-dimensional environment field data into a back propagation neural network to carry out multi-factor environment parameter collaborative optimization to obtain an intelligent control parameter combination; performing test parameter adjustment and detection on the aging detection platform according to the intelligent control parameter combination to obtain second aging response data; and performing spectral attenuation index calculation and aging degree grading based on the second aging response data to obtain an aging state evaluation result of the water-based waterproof material sample. According to the method, multi-dimensional quantitative characterization of the aging state of the water-based waterproof material and scientific prediction of the service life of the water-based waterproof material in an acid pollution environment are realized.

The invention relates to the technical field of preparation of catalysts, in particular to a catalyst for in-situ capture of carbon dioxide, a preparation method of the catalyst and application of the catalyst to preparation of methanol from methane, and the preparation method comprises the following steps: S1, mixing and stirring Bi (NO3) 3.5 H2O, dilute nitric acid and an adsorption modifier; s2, filtering to obtain a white precipitate, drying, slowly heating to 450 DEG C in a muffle furnace, and keeping the temperature for 20-30 minutes to obtain a faint yellow solid; s3, dispersing in a modified dissolving solution, sealing the reactor, and purging with argon for 10-15 minutes; and S4, injecting CH4, reacting for 2 hours under the irradiation of a xenon lamp, washing a solid obtained by suction filtration with deionized water, and drying at 60 DEG C for 10-12 hours to obtain the high-performance catalyst. The invention aims at the field of preparation of high-value chemicals from photocatalytic methane, solves the problem of generation of carbon dioxide by peroxidation of methane, and captures the peroxidation product carbon dioxide through the cooperation of the adsorption modifier and the modified dissolving solution to inhibit peroxidation of methane.

The invention provides a method for promoting acquisition of clean fuel by light / sound concerted catalytic degradation of waste plastics and upgrading and conversion thereof, which comprises the following steps: uniformly mixing g-C3N4, cadmium acetate and thioacetamide according to a predetermined proportion, pouring into a reaction kettle, placing in a high-temperature oven for a predetermined time, centrifuging, cleaning and drying to obtain a catalyst, the method comprises the following steps: loading a catalyst on the surface of aerogel, hydrogel or non-woven fabric to obtain an MTSJA-loaded catalyst, treating waste plastic with NaOH, adding the MTSJA-loaded catalyst, stirring under irradiation of a xenon lamp, starting ultrasound for reaction, and carrying out light / sound synergistic catalytic degradation on the waste plastic. According to the method, energy consumption is not needed, toxic and harmful gas is not generated, the purposes of energy conservation and environmental protection can be achieved, meanwhile, carbon dioxide in water can be catalytically reduced to generate clean energy such as methane in the process of degrading the waste plastic, and further obtaining of the energy is promoted.

The invention discloses a vanadium oxide-based supported platinum catalyst and a preparation method and application thereof, and the preparation method comprises the following steps: a) carrying out high-temperature heat treatment on a V precursor to obtain orange V2O5 carrier powder; b) adding V2O5 powder, a Pt metal precursor and a sacrificial reagent into the solution, carrying out ultrasonic treatment, stirring, and reacting under the irradiation of a xenon lamp to obtain a dark brown suspension; c) centrifuging, washing, drying, grinding and roasting the dark brown suspension to obtain dark brown powder; and d) carrying out three times of high-temperature heat treatment on the dark brown powder under different protective gases, and sequentially carrying out three processes of oxidation, reduction and partial oxidation to obtain the vanadium oxide-based platinum-loaded catalyst. The catalyst prepared according to the invention is applied to a carbon monoxide oxidation reaction, and has the advantages of excellent catalytic performance, long-time stability and good recycling stability at a high space velocity.

The utility model discloses a xenon lamp intense pulsed light beauty instrument treatment handle which comprises an upper cover and a lower cover, a double-lamp light-emitting unit is arranged at the joint of the upper cover and the lower cover, a light filter tube is arranged at the bottom of the double-lamp light-emitting unit, and a water cooling assembly used for reducing the temperature of the light filter tube is arranged on the outer side of the light filter tube. The water cooling assembly comprises a water circulation heat conduction plate arranged on the outer side of the bottom of the double-lamp light-emitting unit, refrigeration pieces are symmetrically arranged on the sides of the water circulation heat conduction plate, cold conduction plates are arranged on the outer sides of the refrigeration pieces, and limiting parts are arranged on the outer sides of the cold conduction plates. The water cooling assembly used for cooling the light filter tube is arranged on the outer side of the light filter tube, heat is brought out of the light filter tube and the double-lamp light-emitting unit through a plurality of water circulation heat conduction plates in the water cooling assembly, meanwhile, a plurality of refrigeration pieces on the outer sides of the bottoms of the water circulation heat conduction plates work, and the surface of the light filter tube is cooled again through a cold conduction plate. Therefore, the light filter tube with the increased temperature is prevented from scalding the surface skin of a user.

The invention belongs to the technical field of material preparation and air pollution control, and particularly relates to preparation of a manganese oxide composite material photocatalyst with foamy carbon as a substrate material. According to the preparation method, a solution impregnation method is adopted, the surface of foamy carbon is pretreated and activated, an activated carbon skeleton can adsorb a material precursor more easily, and the MnxOy / FC composite material can be prepared through calcination. The MnxOy is anchored on the carbon skeleton, so that the loss of MnxOy nanoparticles in air flow is reduced, the secondary pollution possibly caused by the MnxOy nanoparticles in the catalytic reaction process is avoided, and the recycling of the material can be realized through the integral material design. Experiments prove that the degradation rate of the material to 600 ppm toluene under the irradiation of sunlight simulated by a 300 W xenon lamp reaches 95% within 30 min, the material has rapid degradation efficiency to toluene under the concentration of 100-2000 ppm, the reaction activity is basically kept unchanged in 20 cycle experiments, and the material has very strong stability. And the catalyst has good degradation performance on removal of gaseous pollutants such as formaldehyde, benzene and the like, and has universality. The preparation method is simple, the raw materials are low in price, the chemical properties of the materials are stable, no pollution is caused, the energy consumption in the preparation process is low, and the material shows excellent degradation performance on VOCs, can be applied to various waste gas emission or leakage environments and the like, and has a wide application prospect.

The invention discloses a working method of a ceramic material xenon lamp aging oven, and relates to the technical field of aging ovens, the working method is characterized in that two crash barriers are in sliding butt joint together to form a protective fence which is large in area and can cover a row of xenon lamp tubes, and the protective fence can carry out anti-collision protection on the row of xenon lamp tubes; a row of xenon lamp tubes are prevented from being accidentally collided and broken when ceramic products or materials are taken, loaded and unloaded in the aging oven; the two anti-collision fences are installed in a sliding mode, when the aging oven is used for testing, the anti-collision fences can be separated from each other up and down and opened in a sliding mode, a row of xenon lamp tubes are completely exposed to be used for irradiation, and the situation that the two anti-collision fences are fixedly installed in a static mode, block the front side of the row of xenon lamp tubes for a long time, block light and affect illumination intensity is avoided. Compared with the prior art, the ceramic product aging test device is beneficial for ensuring the accuracy of aging test use.

The invention discloses a plastic part xenon lamp aging machine with a spraying system, and belongs to the technical field of material weather resistance testing equipment. The equipment comprises an aging chamber, a xenon lamp light source and a spraying system, and the spraying system realizes flexible switching spraying of pure water and a chemical solution through cooperative operation of a liquid supply unit (comprising double liquid storage tanks and a four-way switching valve), a nozzle unit (a multidirectional adjustable nozzle), a liquid recovery device (a collecting tank and a recovery pump) and a control unit. The control unit accurately controls the concentration and flow of the mixed solution by adjusting the opening degree of the flow valve, residual liquid is emptied through the four-way valve and the liquid drainage pipeline to avoid cross contamination, the spraying angle is dynamically adjusted through the multi-directional nozzle to ensure uniform coverage, and the recycling device recycles waste liquid in a classified mode to reduce resource consumption. The problems of single spraying mode, residual liquid pollution, uneven coverage and low waste liquid treatment efficiency of traditional equipment are solved, and the aging test accuracy, the environment simulation authenticity and the resource utilization rate are remarkably improved.

The invention discloses a silver nanowire network film and a welding method, and relates to the technical field of nano material processing and flexible electronic device manufacturing, and the welding method comprises the following steps: taking a polyester film as a substrate, taking silver nanowires, and placing the silver nanowires in ethanol to prepare a silver nanowire dispersion liquid; spin-coating the silver nanowire dispersion liquid on a substrate, and drying to form a silver nanowire network electrode; a focused light scanning system is adopted to weld the silver nanowire film, a xenon lamp light source is adopted to form a light spot through focusing of a convex lens, an XY motor drives a platform to drive a silver nanowire network electrode to perform two-dimensional motion, and the light spot scans a to-be-welded area of the silver nanowire network electrode according to a preset path for welding; and naturally cooling to obtain the silver nanowire network film. Uniformity and stability of current conduction of the electrode network are guaranteed, and comprehensive and efficient node welding is achieved.

The invention relates to a co-doped carbon nitride / phosphomolybdic acid composite catalyst as well as a preparation method and application thereof. The composite catalyst is composed of co-doped carbon nitride and phosphomolybdic acid loaded on the co-doped carbon nitride; the co-doped carbon nitride is graphite phase carbon nitride co-doped with sodium, phosphorus and oxygen, and the co-doped carbon nitride is prepared by mixing a cyanamide compound and sodium hexametaphosphate and calcining at high temperature. The composite catalyst is used for photocatalytic production of hydrogen peroxide, and a method for photocatalytic production of hydrogen peroxide comprises the following steps: dispersing the co-doped carbon nitride / phosphomolybdic acid composite catalyst in an aqueous solution containing a sacrificial agent, and performing photocatalytic preparation of hydrogen peroxide under irradiation of a xenon lamp. Compared with the prior art, the preparation method provided by the invention is simple and good in repeatability, the charge separation efficiency of the prepared photocatalytic material is remarkably improved, and the photocatalytic hydrogen peroxide preparation efficiency is high.

The invention discloses alcohol-resistant aging-resistant waterborne polyurethane and a preparation method thereof.The alcohol-resistant aging-resistant waterborne polyurethane is of a unique core-shell structure, a core layer is fluorine-containing polyurethane and is prepared through a reaction of fluorine-containing polyol, polyisocyanate and the like, the molar ratio of the fluorine-containing polyol to the polyisocyanate is 1: 2-1: 4, and a double-bond-containing chain extender is introduced; the shell layer is an acrylate copolymer containing an ultraviolet absorption monomer, the ultraviolet absorption monomer accounts for 10-40%, the shell layer further contains a multifunctional cross-linking agent, the shell layer is formed by compounding at least two acrylate monomers with different polarities, the core and the shell are connected through chemical bonds, and bonding is enhanced through a silane coupling agent KH-570. The preparation process comprises the steps of fluorine-containing polyurethane core layer preparation, neutralization and pre-dispersion, shell layer polymerization, post-treatment and the like. The prepared waterborne polyurethane has greatly improved alcohol wiping resistance and excellent xenon lamp aging resistance, and can be widely applied to the fields of automotive interiors, consumer electronics coatings and the like.

The utility model relates to a light energy calibration system for a hand tool of an intense pulsed light therapeutic apparatus. The therapeutic apparatus system is used for receiving a light energy signal of the hand tool and outputting a control signal. The hand tool comprises a light condensation main body and a xenon lamp assembly arranged in the hand tool. The light guide crystal main body is matched with the light condensation main body; photoelectric sensors are arranged at the two ends of the condensation body, and the photoelectric sensors collect light energy signals and transmit the light energy signals to the therapeutic apparatus system. The hand tool is provided with the photoelectric sensor for monitoring light energy, the light energy of the hand tool is monitored in real time, monitored signals are transmitted to the system, and the system judges the received signals and adjusts electric energy supply of the circuit, so that the light energy of the hand tool is adjusted, and it is guaranteed that the light energy of the whole hand tool is stable.

The invention relates to the technical field of anti-aging agents, and discloses a preparation method of an anti-aging agent and application of the anti-aging agent in plastics, the anti-aging agent contains styrene groups, and can be well fused and grafted with polyolefin such as polypropylene under the action of an initiator dibenzoyl peroxide or dicumyl peroxide, so that the anti-aging agent has a good anti-aging effect. The influence on the mechanical strength of the polyolefin plastic is very small, and the problem that physical blending can cause great influence on the mechanical strength and the use performance of the plastic can be avoided. Meanwhile, a phenol triazine structure contained in the anti-aging agent has a unique ultraviolet absorption effect, and a hindered amine structure is contained, so that the photo-oxygen degradation reaction of the polyolefin plastic can be inhibited through multiple ways of capturing free radicals and decomposing hydroperoxide, and through an accelerated aging experiment of xenon lamp irradiation, the plastic keeps very high tensile strength, and the anti-aging effect is good. And excellent thermo-oxidative aging resistance and ultraviolet radiation aging resistance are shown.

The invention discloses a two-dimensional imidazolyl material for CO2 reduction and a preparation method thereof, the molecular formula of the single crystal structure of the two-dimensional imidazolyl material is [Fe (pbi) (SCN) 2], and pbi is 1, 1-(1, 4-phenylene) bis (1H-imidazole). The two-dimensional imidazolyl material disclosed by the invention is of a two-dimensional network structure which is formed by continuously extending a ligand consisting of imidazolyl and a benzene ring and metal iron atoms under the coordination action. A photocatalytic reaction system constructed by using the two-dimensional imidazolyl material disclosed by the invention as a catalyst, RuPS as a photosensitizer and BIH as a sacrificial agent can reduce carbon dioxide into carbon monoxide under irradiation of a 400nm xenon lamp, has relatively high CO yield and selectivity, and has wide application potential in the field of photocatalysis.

The invention discloses an electrode assembly for a high-power pulse xenon lamp and a preparation method of the electrode assembly, and aims to overcome the technical defects that a traditional electrode is large in mass and poor in reliability and stability. The electrode assembly is mainly composed of an electrode tip, an electrode stem and a lead seat which are made of cerium-tungsten alloy, niobium and stainless steel. The electrode tip and the electrode rod are stably connected in a mode of combining brazing with interference connection, and the electrode rod and the lead seat adopt a multi-connection structure of brazing, threaded mechanical connection and micro interference connection; the assembled electrode assembly is subjected to degassing, brazing connection and electrode activation treatment at a time in a high-temperature and high-vacuum environment, and the problem of electrode material pollution caused by repeated heating is effectively avoided. The electrode assembly is simple in overall structure, reliable in preparation, excellent in current passing ability, capable of bearing impact force under extreme working conditions and outstanding in burning loss resistance, reliability and stability are remarkably improved, and the long-term stable working requirement and large-scale mass production of the high-power pulse xenon lamp are met.

The invention provides a novel laser-driven plasma light source, and relates to the technical field of plasma light sources, the laser wavelength of the light source and the numerical aperture of a light beam are adjustable, and the laser beam can be automatically focused. Comprising a near-infrared semiconductor laser module, a light path system, a xenon lamp system, a wavelength control system, a diaphragm driving control system, a focus self-positioning system and an upper computer control system. The temperature and current of the semiconductor laser can be accurately regulated and controlled, so that the wavelength of the semiconductor laser is accurately controlled, and the light emitting stability of the laser-driven plasma light source is improved.

The invention discloses a strong hydrophobic silver-loaded visible light response sterilization powder. The preparation method comprises the following steps: 1) fully dispersing g-C3N4 nanosheets in deionized water under an ultrasonic condition to obtain a suspension, adding a silver nitrate aqueous solution into the suspension, adding methanol as a sacrificial agent, and irradiating and stirring by using a xenon lamp to obtain silver-loaded carbon nitride nanoparticles; 2) mixing vinyl-terminated polydimethylsiloxane and toluene, adding the silver-loaded carbon nitride nanoparticles, fully stirring under water bath heating, and then fully stirring by using full light irradiation in an air-isolated environment; 3) dispersing the carbon nitride nano-particles obtained in the step 2) in toluene for centrifugation, removing unloaded vinyl-terminated polydimethylsiloxane, dispersing the centrifuged carbon nitride nano-particles in ethanol, and drying the centrifuged carbon nitride nano-particles. The sterilization powder has good hydrophobicity, and has a broad-spectrum sterilization effect under visible light illumination.

The invention relates to the technical field of photocatalysis, in particular to a monatomic photocatalyst Co-COF-C4N as well as a preparation method and application thereof. COF-C4N is synthesized through a solvothermal method, and cobalt metal is anchored into a covalent organic framework through an impregnation method, so that the monatomic catalyst Co-COF-C4N is obtained. Compared with pure COF-C4N, the Co-COF-C4N has the advantages that the carrier separation efficiency can be improved, the yield of H2O2 produced through photocatalysis can be remarkably enhanced, and the yield of H2O2 is 6979 mu mol.g <-1 >. H <-1 > under irradiation of a xenon lamp and is 1.6 times that of the pure COF-C4N. The anchoring of cobalt atoms increases oxygen adsorption sites, improves the hydrophilicity of the photocatalyst, and greatly improves the yield of hydrogen peroxide. The hydrogen peroxide is produced through indirect 2e-ORR and direct 2e-WOR double channels in deionized water under the oxygen condition, and excellent photocatalytic stability is achieved.

A window film material weather resistance detection device comprises a detection box, a sample holder, a water storage disc and a xenon lamp. A plurality of partition plates are arranged in the detection box, first detection chambers and second detection chambers which are alternately distributed are divided by the partition plates in the circumferential direction, each first detection chamber and each second detection chamber are each internally provided with a water storage disc, a sample holder and a xenon lamp, and the first detection chambers and the second detection chambers alternately carry out irradiation testing and condensation testing on samples on the sample holders. The interior of the detection box is divided into a group of first detection chambers and a group of second detection chambers, irradiation test and condensation test are circularly performed in the first detection chambers and the second detection chambers, and parameters such as temperature and humidity can be changed in the same group of detection chambers, so that test data of a sample under the condition that one parameter is changed can be obtained at the same time, and the detection accuracy is improved. The speed of the weather resistance test of the film material can be multiplied, and the test efficiency is greatly improved.

The invention relates to an ultrathin Ru / Co3O4 catalyst, Co3O4 serving as a carrier is of an ultrathin two-dimensional nanosheet structure, and Ru nanoparticles are uniformly loaded on the surface of the Co3O4. The preparation method comprises the following steps: dispersing Co3O4 in a mixture of deionized water and methanol to obtain a suspension; and adding ruthenium trichloride into the suspension, and irradiating the mixture with a xenon lamp to finally obtain the ultrathin Ru / Co3O4 catalyst. The invention relates to an ultrathin Ru / Co3O4 catalyst applied to photo-thermal CO2 hydrogenation. The method has the advantages that Co3O4 is of an ultrathin two-dimensional nanosheet structure, Ru is evenly loaded on the surface of Co3O4, Ru / Co3O4 has the high specific surface area, rich active sites are provided, the photo-thermal catalysis CO2 hydrogenation activity is remarkably improved, the problem that an existing catalyst is low in activity is solved, parameters such as the heating rate, the roasting temperature and time are accurately controlled, and Ru doping is combined, so that the catalytic activity of CO2 is greatly improved. Active component loss and structure collapse are effectively avoided, and the stability is enhanced.

The invention provides an organic wastewater degradation device system and method based on photocatalysis and plasma discharge. The device system comprises a three-dimensional photocatalysis and plasma synergistic degradation reaction device and a wastewater aeration treatment device, the degradation reaction device comprises an inner cylinder and an outer cylinder which are coaxially arranged, a plasma discharge inner electrode, a plasma discharge outer electrode, a glow discharge electrode, a wastewater conveying pipeline, a pulse xenon lamp and a spiral xenon lamp, and the first plasma generation cavity, the wastewater aeration treatment device and the wastewater conveying pipeline are sequentially communicated. According to the device system provided by the invention, a coaxial surrounding type plasma discharge structure is designed, gas-liquid secondary degradation is formed on the organic wastewater, glow discharge is designed on the two sides of a pipeline to enable a spiral xenon lamp to emit light, uniform three-dimensional xenon light degradation is formed by combining a pulse xenon lamp, and further through the synergistic effect of photocatalysis and a plasma field, the gas-liquid secondary degradation of the organic wastewater is realized. The degradation process of organic matters is enhanced, and the degradation efficiency of organic wastewater is improved.

The invention belongs to the field of material synthesis catalysis, and provides a CMOFs metal supported catalyst connected by hydrazone bonds, a preparation method and application in photocatalytic CO2 reduction. According to the method, through hydrazone bond connection and introduction of groups such as methoxyl into a ligand, the hydrophilicity and the electron conduction performance of the material can be further enhanced, hydrogen bonds can be formed with nitrogen on the hydrazone bonds, the coplanar structure of CMOFs can be maintained, conjugate transfer of electrons in layers is facilitated, and the novel CMOFs material synthesized by the method has the advantages that in a water-containing reaction system, the reaction temperature is reduced, and the reaction time is shortened. The generation of formic acid through photocatalytic CO2 reduction is realized. Under the irradiation of a 300W xenon lamp, Rh-coated Cu3-PH-OMe is used for catalytic reduction of carbon dioxide to prepare formic acid, and the reaction rate is 3697 [mu] mol.g <-1 >. H <-1 >.

The present invention belongs to the field of chemical engineering, and particularly relates to a method for activating methane to produce methanol using a ruthenium-containing catalyst. The present invention discloses a preparation method of a ruthenium-loaded catalyst, which includes the following steps: pretreating activated carbon to obtain pretreated activated carbon as a carrier; loading noble metal ruthenium onto the carrier to obtain a ruthenium-loaded catalyst. The present invention also provides a method for photocatalytically preparing methanol / methanol derivatives from methane: including the following steps: putting the ruthenium-loaded catalyst into an autoclave, then adding a reaction solvent and an oxidant, first displacing the air in the autoclave with methane, and then continuing to introduce methane until the pressure reaches 0.5-2 MPa, and then sealing the autoclave, providing a light source by a short-arc xenon lamp, and reacting at room temperature to obtain methanol / methanol derivatives. The method for preparing methanol by the present invention has the characteristics of relatively simple process, mild conditions, and high yield.

This invention discloses a method for preparing P-TiO2 photocatalyst and a method for recycling waste Pd / Al2O3 catalyst. The P-TiO2 photocatalyst is prepared by a hydrothermal method. This invention provides a method for recycling waste Pd / Al2O3 catalyst using photocatalytic technology, comprising the following steps: Step A: Obtaining P-TiO2 photocatalyst; Step B: Mixing waste Pd / Al2O3 catalyst with P-TiO2 photocatalyst and a photocatalytic solvent, and carrying out a photocatalytic reaction under stirring and xenon lamp irradiation conditions to dissolve Pd in ​​the waste Pd / Al2O3 catalyst. After sufficient reaction, the Al2O3 support is first separated, and then the remaining solution is centrifuged to obtain a Pd-containing solution and P-TiO2 photocatalyst. This invention can effectively improve the recovery rate of Pd metal, and the entire process is green, environmentally friendly, and low-cost.

The invention discloses a polyurethane adhesive for flexible packaging of a new energy battery and a preparation method of the polyurethane adhesive, and belongs to the technical field of adhesives. The adhesive is prepared by adopting hydrogenated bisphenol A as a polyol raw material and dicyclohexylmethane diisocyanate (HMDI) as isocyanate and cooperating with dimethylolpropionic acid, triethylamine, 1, 4-butanediol and other raw materials through the steps of prepolymer synthesis, chain extension reaction, neutralization reaction, addition of auxiliaries, emulsion preparation and the like. The core innovation lies in that the electrolyte erosion resistance is improved through an ether bond structure of hydrogenated bisphenol A, the weather resistance and rigidity are enhanced by using a hydrogenated alicyclic structure of hydrogenated bisphenol A, and meanwhile, the crosslinking density and the interface bonding force are balanced by optimizing the use amount of 1, 4-butanediol and adding a silane coupling agent KH-550. The adhesive has excellent electrolyte resistance (the adhesive strength retention rate after soaking is greater than or equal to 90%), good low-temperature resistance flexibility (no crack when bent at-40 DEG C) and prominent weather resistance (the performance retention rate after xenon lamp aging for 1000h is greater than 90%).

The present invention belongs to the technical field of photocatalytic CO₂ reduction, and specifically relates to a dual-MOFs-derived zinc oxide / bismuth oxybromide composite photocatalyst, its preparation method and application. In the present invention, ZIF-8 and Bi-MOF are first prepared by a solvothermal method. After halogenating Bi-MOF with ammonium bromide, ZIF-8 is in-situ grown, and a composite photocatalyst with a dual-MOFs structure composed of zinc oxide particles with a dodecahedral structure derived from ZIF-8 and bismuth oxybromide derived from Bi-MOF is prepared by a one-step calcination method. Under room temperature, xenon lamp illumination, and without a sacrificial agent, this catalyst can effectively catalyze the reduction of carbon dioxide into carbon monoxide and methane, and has good photocatalytic CO₂ reduction performance, stability and repeatability. This preparation method has low cost, high reproducibility, and mild and controllable preparation conditions, and has broad application prospects in the field of photocatalytic CO₂ reduction.

The invention relates to an ear-nose endoscopic examination and imaging system provided with a Wood lamp and a working method of the ear-nose endoscopic examination and imaging system. The ear-nose endoscopic examination and imaging system comprises a light source device and an operation and lens device, the light source device comprises a reflective concave mirror, a xenon lamp, a first dimming lens, a second dimming lens, a rotary glass aperture, a rotary nickel hydride filter aperture and a light guide cable; the reflective concave mirror, the xenon lamp, the rotary glass aperture, the first dimming lens, the rotary nickel hydride filter aperture and the second dimming lens are arranged in sequence; the second dimming lens is arranged opposite to one end part of the light guide cable; the operation and lens device is connected with the light source device through a light guide cable. Compared with the prior art, the wood lamp and the ear-nose endoscope are combined, and the defect that the treatment effect cannot be accurately evaluated due to ear-nose fungal infection and specific bacterial infection is effectively overcome.

The application discloses a kind of oxygen vacancy promotes methanol carbon-carbon coupling ethane production method, comprising the following steps: synthesizing H2Ti4O9;The obtained H2Ti4O9 is stripped into colloidal sheet, obtains two-dimensional TiO2 nanosheet;Hydrogenation treatment obtains the TiO2 nanosheet with oxygen vacancy;The TiO2 nanosheet with oxygen vacancy is dissolved in methanol / water solution, drop into H2PtCl6 solution, solution is in vacuum state, then it is irradiated with arc lamp while stirring N1 hour, obtain brown white precipitate, after washing vacuum drying catalyst is obtained;Methanol / water solution is placed into reactor, catalyst is uniformly dispersed in methanol / water solution, when reaction, first the reactor is evacuated to remove air, then xenon lamp is opened to carry out illumination, after reaction, obtain ethane.The application uses the TiO2 nanosheet with oxygen vacancy as catalyst to produce ethane, and a large number of oxygen vacancies increase a large number of methanol dissociation sites, thereby reducing the distance between adjacent methoxyl groups, and then promoting coupling to generate ethane.

The utility model provides a pulse xenon lamp power supply system and a light-emitting device. The pulse xenon lamp power supply system comprises an energy storage module, a plurality of driving modules and a control module, each driving module comprises a pre-combustion device and a discharging module which are connected with each other; each driving module is connected with the pulse xenon lamp; the energy storage module stores electric energy; the control module receives the starting signal and outputs a pre-combustion high-voltage signal of a pre-combustion device connected with the pulse xenon lamp and a driving square wave signal of a discharge module connected with the pulse xenon lamp; the pre-combustion device is used for releasing a high-voltage pulse for puncturing the pulse xenon lamp according to the pre-combustion high-voltage signal so as to pre-combust the pulse xenon lamp through the high-voltage pulse; and the discharge module conducts the energy storage module and the pulse xenon lamp based on the driving square wave signal. According to the pulse xenon lamp power supply system, the pre-combustion device and the discharging device form a module, a set of pulse xenon lamp power supply system is formed based on the module, and the pulse xenon lamp power supply system can reduce system hardware composition and construction difficulty.

The invention provides a metal or alloy surface treatment method and a metal or alloy product. The surface treatment method of the metal or the alloy comprises the following steps: forming an organic-inorganic hybrid layer on the surface of an anodic oxide layer on at least one surface of the metal or the alloy; the organic-inorganic hybrid layer is provided with a spatial network structure formed by silicon dioxide, a copolymer of organic oxysilane containing an epoxy group and a benzophenone compound containing a hydroxyl group, and nanocrystallized superfine carbon black. At least one surface of the metal or alloy product is provided with an anodic oxide layer and an organic-inorganic hybrid layer; the organic-inorganic hybrid layer is provided with a spatial network structure formed by silicon dioxide, a copolymer of organic oxysilane containing an epoxy group and a benzophenone compound containing a hydroxyl group, and nanocrystallized superfine carbon black. According to the technical scheme, the organic-inorganic hybrid high-brightness black layer is formed, so that the high-brightness black coating not only has an excellent appearance orange peel effect and excellent xenon lamp aging resistance, but also has extremely high hardness and extremely excellent car washing resistance.