582 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 relates to a method for synchronously removing antibiotic drug-resistant bacteria and drug-resistant genes by combining sunlight-driven interface heat and Fenton-like oxidation, which comprises the following steps of: putting a photothermal film loaded with a carbon black composite photothermal material into a photothermal disinfection reactor, introducing antibiotic drug-resistant bacteria wastewater, adding H2O2, turning on a xenon lamp light source, preheating the photothermal film, and carrying out photothermal disinfection on the photothermal film to remove the antibiotic drug-resistant bacteria and the drug-resistant genes. The photothermal disinfection reactor is sealed, the wastewater is treated through the photothermal film under the action of gravity, the photothermal conversion material absorbs optical radiation and converts the optical radiation into thermal radiation, and antibiotic-resistant bacteria are treated through the high-temperature interface heat effect generated on the photothermal film. The high-temperature interface heat can cause local temperature rise of a bacterial cell membrane structure, so that fatty acid chains in a bacterial membrane lipid bilayer are broken to a certain extent, the permeability of the cell membrane is increased, the structure of a bacterial outer membrane is damaged due to caused physical damage, the permeability of the bacterial membrane is increased, and the integrity of the membrane is damaged.

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 invention relates to the technical field of harmful substance detection, in particular to a preparation method and application of a magnetic organic covalent framework material for extracting pyrethroid pesticide in peanuts, and the preparation method comprises the following steps: step 1, dropwise adding an iron standard solution into a NaOH solution, stirring to react, cooling to room temperature after the reaction is finished, then dropwise adding a sodium citrate solution, mechanically stirring, and filtering to obtain a filtrate; magnetically separating a product, washing and drying to obtain Fe3O4 nanoparticles; step 2, mixing the Fe3O4 nanoparticles, DVA, TA, TAPT and acetonitrile, performing ultrasonic treatment, then adding acetic acid, oscillating the mixture, and then stirring and refluxing; the product is washed and dried, and COF coated Fe3O4 is obtained; step 3, uniformly dispersing COF coated Fe3O4 in an acrylamide solution, and then irradiating by a xenon lamp; and washing and drying the product to obtain the magnetic organic covalent framework material PAM-COF coated Fe3O4. The PAM-COF coated Fe3O4 material prepared by the preparation method disclosed by the invention can realize efficient extraction of various pyrethroid pesticides at the same time, and has relatively strong matrix anti-interference capability and excellent enrichment and purification performance.

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 relates to a preparation method and application of an Ag-coated BiOI nanosheet array composite SERS (Surface Enhanced Raman Scattering) substrate. The preparation method comprises the following steps: preparing a bismuth oxyiodide (BiOI) nanosheet array through electro-deposition, sputtering silver nanoparticles to the surface of BiOI nanosheets to obtain an Ag-coated BiOI nanosheet composite array, and irradiating the Ag-coated BiOI nanosheet composite array by a xenon lamp to enhance SERS signals. During preparation, firstly, a large-area uniform BiOI nanosheet array is obtained on the surface of pretreated FTO conductive glass through an electro-deposition method, then silver nanoparticles are sputtered on the surfaces of BiOI nanosheets to obtain an Ag-coated BiOI nanosheet array composite substrate, and then the composite SERS substrate is soaked in a detection solution to adsorb detection molecules. Finally, the soaked Ag-coated BiOI nanosheet composite substrate is placed under a xenon lamp to be irradiated for a certain time, and then Raman detection is conducted. The adsorption capacity of the Ag-coated BiOI nanosheet composite substrate on target detection molecules can be remarkably improved through irradiation of a xenon lamp, so that SERS signals are improved, and the detection sensitivity is improved; the Ag-coated BiOI nanosheet composite substrate based on xenon lamp irradiation shows good SERS sensitivity, and can be used as a substrate to realize low-concentration detection of common harmful substances such as rhodamine 6G (R6G), crystal violet (CV) and pesticide residue glyphosate in food.

The utility model relates to a light-gathering cavity for a large-energy laser and the laser. The light-gathering cavity comprises a cavity assembly, an inner end, a middle end, an outer end, a xenon lamp fixing piece and a glass tube. An accommodating channel for accommodating the xenon lamp and the laser crystal is formed in the cavity assembly; an inner end, a middle end and an outer end are sequentially arranged at the two ends of the cavity assembly in the extending direction of the two ends of the containing channel so as to seal the containing channel; the glass tube is arranged in the containing channel, the two ends of the glass tube are installed at the inner ends, a laser crystal is contained in the glass tube, and a crystal cooling channel is formed between the glass tube and the laser crystal. The outer end is used for hermetically connecting the laser crystal; the inner end head, the middle end head and the outer end head are respectively provided with a through hole for the xenon lamp to penetrate through, and the xenon lamp fixing piece is arranged on the outer side of the outer end head and used for connecting the xenon lamp and the outer end head in a sealed mode. A gap is formed between the through hole and the xenon lamp to form a xenon lamp cooling channel; and the middle end head is provided with an inlet and an outlet which are communicated with the crystal cooling channel and the xenon lamp cooling channel.

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 provides a preparation method and application of xenon lamp exposure aging resistant black halogen-free flame retardant nylon. The xenon lamp exposure aging resistant black halogen-free flame retardant nylon is prepared from the following raw materials in percentage by weight: 30-50% of polyamide resin, 10-30% of glass fiber, 10-30% of a halogen-free flame retardant compound, 1-3% of an antioxidant, 5-15% of a water-oxygen barrier modifier and 1-3% of black masterbatch. The xenon lamp exposure aging resistant black halogen-free flame retardant nylon prepared by the preparation method of the xenon lamp exposure aging resistant black halogen-free flame retardant nylon can adapt to long-term outdoor use requirements, has excellent xenon lamp exposure aging resistant and flame retardant properties, and is widely applied to automobile parts.

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 utility model discloses a new energy automobile working condition and environment simulation device, and relates to the technical field of new energy automobiles. Comprising a simulation workshop and a simulation mechanism arranged on the simulation workshop, the simulation mechanism comprises two groups of rainfall simulation parts, two xenon lamp sunlight simulators and a fan, each group of rainfall simulation parts are symmetrically arranged in the simulation workshop, and each xenon lamp sunlight simulator is installed at the position, close to the top edge, of the two sides of the outer wall of the simulation workshop. The fan is installed on one side of the outer wall of the simulation workshop. According to the new energy automobile working condition and environment simulation device, various actual environment conditions are simulated through the simulation mechanism, the performance of a new energy automobile under different environment conditions can be tested, the test efficiency and accuracy are improved, the waterproof performance of the new energy automobile can be tested through the rainfall simulation component, and the waterproof performance of the new energy automobile can be tested through the xenon lamp solar simulator. And the light condition in a real environment can be simulated so as to detect the anti-aging performance of the new energy automobile.

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 discloses a light source and a light source control method, and belongs to the technical field of light sources. The light source comprises a laser, a temperature control module, a xenon lamp, a white light power monitoring module and a control module; the temperature control module is mounted on the laser and is used for controlling the working temperature of the laser; the xenon lamp is used for receiving the laser output by the laser and outputting white light; the white light power monitoring module is used for obtaining a white light power signal output by the xenon lamp; and the control module is electrically connected with the laser and the white light power monitoring module, and is used for adjusting the laser power signal based on the laser power signal output by the laser and the white light power signal. The temperature control module is arranged on the laser, and the output of the laser is adjusted by the control module according to the real-time white light power signal, so that the power fluctuation of white light output is reduced as much as possible, and the stability of the light source is improved.

The utility model relates to a beauty instrument, which belongs to the technical field of beauty equipment and comprises a main body, a xenon lamp tube and a light filtering assembly. The main body is provided with an accommodating cavity, and a light outlet communicated with the accommodating cavity and the external environment is also formed in the main body; the xenon lamp tube is arranged in the containing cavity, and light emitted by the xenon lamp tube can be emitted out from the light outlet. The light filtering assembly is arranged between the xenon lamp tube and the light outlet. The light filtering assembly comprises a light filtering support and light filters, the light filtering support is provided with at least two installation positions, and the light filters with different light filtering wave bands are arranged in the different installation positions; the light filtering support is rotatably connected in the containing cavity of the main body so as to switch different installation positions to correspond to the light outlets, so that the light filters move along with the light filtering support to switch different light filters to cover the light outlets so as to change the wave bands of light emitted from the light outlets, the whole operation process is simple, and the use experience of a user can be effectively improved.

The invention discloses a preparation method of a co-doped titanium oxide photocatalyst for hydrogen production through water photolysis and a product prepared through the preparation method, TiCl4 and magnesium nitride are used as raw materials, the co-doped MgCO3 / C-N-TiO2 nano titanium oxide photocatalyst is formed by adjusting the molar ratio of N < 3-> to Ti < 4 + > and conducting carbon doping, the photocatalytic hydrogen production performance of TiO2 is effectively improved, and the photocatalytic hydrogen production efficiency is improved. The hydrogen evolution performance can reach 2-3 mmol / g.h under the irradiation of a 300W xenon lamp, a new way is provided for preparation of a co-doped anatase titanium oxide photocatalyst, and the industrial requirement of photocatalytic hydrogen production of a titanium oxide material can be well 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 belongs to the field of photocatalytic materials, and particularly relates to a silver metavanadate composite cadmium sulfide photocatalytic material as well as a preparation method and application thereof in photocatalytic hydrogen production. The preparation method comprises the following steps: taking a sulfur source and a cadmium source, adding ethylenediamine, and uniformly stirring and mixing; transferring the mixture into a hydrothermal reaction kettle for reaction, after the reaction is finished, obtaining turbid liquid, and centrifugally washing and drying the turbid liquid to obtain cadmium sulfide powder; the preparation method comprises the following steps: adding water into cadmium sulfide, adding a silver source and a vanadium source under a stirring condition, stirring, transferring into a reaction kettle, carrying out a hydrothermal reaction, centrifuging, washing and drying to obtain the silver metavanadate composite cadmium sulfide photocatalytic material. The photocatalytic material disclosed by the invention has a relatively obvious catalytic effect in a photocatalytic hydrogen production reaction. Under the irradiation of a xenon lamp and under the condition of a set reaction system, the hydrogen production rate of water decomposition of the photocatalyst reaches 228.8 mu mol / g / h, which is obviously superior to that of a pure cadmium sulfide catalyst.