30 results about "HYDROSOL" patented technology

The invention discloses a preparation method and application of a ferroelectric enhanced core-shell structure artificial photosynthetic heterojunction catalyst, and belongs to the field of solar energy conversion and photocatalytic degradation. The invention aims to explore the technical problems of low-cost green preparation, high photoelectric conversion efficiency and photocatalytic performance improvement of the photocatalyst. The method comprises the following steps: 1, respectively dissolving bismuth nitrate pentahydrate and iron nitrate nonahydrate in ethylene glycol in sequence, heating in a water bath, stirring, aging, transferring sol into an air dry oven, drying to obtain gel powder, grinding, transferring the powder into a muffle furnace, and calcining to obtain BiFeO3 powder (named as BFO); and 2, dissolving thioacetamide in deionized water, fully stirring, adding the BFO prepared in the step 1, transferring the solution into an ultrasonic cleaning machine, carrying out ultrasonic dispersion, transferring the solution into a reaction kettle, carrying out heating reaction, cooling, washing, and drying to obtain the ferroelectric enhanced Bi2S3 / BFO photocatalyst with a stable heterojunction structure.

The present invention relates to a method for manufacturing a glass article comprising the following steps: - the provision of a glass substrate, - the deposition, on at least one face of said glass substrate, of a stack of layers comprising at least one functional metallic layer containing silver, each of said layers being deposited by magnetic field assisted sputtering, - the application of a sol-gel solution comprising at least one silicon oxide precursor and / or at least one transition metal oxide precursor, said solution being applied over said stack of layers, so as to form a sol-gel layer having an average thickness of between 50 nm and 3000 nm, preferably between 70 nm and 1500 nm, - the heat treatment at a temperature above 500°C, preferably between 540°C and 700°C, so as to crack the sol-gel layer and damage the stack of layers.The present invention also relates to a glass article that can be obtained by such a process which comprises a glass substrate coated on at least one of its faces: - with a stack of layers comprising at least one functional metallic layer containing silver, and - with at least one sol-gel layer located above said stack of layers and having an average thickness between 50 nm and 3000 nm, preferably between 70 nm and 1500 nm, said stack of layers and said sol-gel layer having cracks or fissures.

The application relates to the technical field of coating preparation, in particular to a nano coating for a self-cleaning polycrystalline solar module and a preparation method, wherein the coating is composed of titanium dioxide nanotubes, fluorosilane modified silica aerogel, graphene quantum dots and polyaniline-polyazole copolymer; the titanium dioxide nanotubes are prepared through a hydrothermal reaction and calcination, the aerogel is synthesized through a sol-gel method, the quantum dots are obtained through pyrolysis reduction, and the conductive polymer is obtained through oxidation polymerization; the components are dispersed in a solvent in proportion, ultrasonic dispersion is carried out after the addition of a leveling agent, the solar module is coated through a dip coating method, and the coating is formed through drying and ultraviolet curing. The self-cleaning nano coating is composed of multiple components, forms a multistage rough structure, realizes superhydrophobicity, widens a light response range, improves photocatalytic efficiency, improves electrical performance and increases photoelectric conversion efficiency.

The invention discloses an aerogel-based evaporator with a double-network structure as well as a preparation method and application of the aerogel-based evaporator, and relates to the technical field of water treatment. According to the aerogel-based evaporator, sodium alginate and nanocellulose are used for constructing an interpenetrating dual-network as a framework, acidified carbon nanotubes are combined as a photo-thermal material, and the aerogel-based evaporator is prepared through a sol-gel method and a freeze-drying process. The double-network structure synergistically exerts the advantages of super hydrophilicity and high mechanical strength, and salt ion deposition and crystallization are effectively inhibited; the acidified carbon nanotubes guarantee efficient photo-thermal conversion, and the solar energy utilization rate is improved. The evaporator successfully solves the problems that traditional equipment is low in solar energy utilization rate, salt crystallization damages the evaporator and the like, has excellent mechanical stability, wide water body adaptability and light environment adaptability, and is environment-friendly in preparation process, easy to produce on a large scale and suitable for industrial production. And an efficient and stable novel technical scheme is provided for solar-driven water purification and seawater desalination.

The present invention belongs to the technical field of catalyst materials. Disclosed are a preparation method for a nano-TiO2 thin film, and a product and the use thereof. The preparation method comprises the following steps: preparing a titanium dioxide sol by using butyl titanate and absolute ethanol as raw materials; loading the titanium dioxide sol onto a glass substrate; and then sequentially drying and sintering the glass substrate loaded with the titanium dioxide sol. The preparation method is simple, uses simple and easily available raw materials, is free of pollution, and is beneficial to industrial production. The loading rate of the nano-TiO2 in the obtained nano-TiO2 thin film is high, thereby resulting in a high utilization rate of solar energy, and enabling efficient photocatalytic degradation of organic pollutants.

A fluorine-free transparent superhydrophobic coating, and a preparation method therefor and an application thereof are provided. In the preparation method, a three-dimensional network structure formed by self-assembly of a bisamide derivative (1,4-bis[(3,4-dioctyloxyphenyl)-bisamido]benzene, BPH-8) is used as a template; tetraethyl orthosilicate (TEOS) as a silica precursor is adsorbed on a surface of the template to undergo sol-gel polymerization to form silica with high transparency; then BPH-8 is removed by calcination to obtain a fibrous transparent silica surface; the silica surface is hydrophobically modified with octyltrichlorosilane to obtain a transparent superhydrophobic coating. The fluorine-free transparent superhydrophobic coating features a water contact angle of 162.7°, a sliding angle of less than 3°, and an average transmittance of visible light of 84.8%, and has good self-cleaning ability, and potential application value in the fields of architectural glass, automotive window glass, rearview mirrors, optical lenses, and solar photovoltaics.

The invention provides a high-temperature-resistant carbon-based thermal insulation material and a preparation method thereof. The method comprises the following steps: modifying short carbon fibers by using a silane precursor and a hafnium tantalum precursor in sequence to obtain high-antioxidant short carbon fibers; preparing the antioxidant modified chopped carbon fibers into wet fiber sheets; mixing the hafnium tantalum nano boride powder, magnesia and aluminum fluoride, and then mixing with zirconium phosphate and an aluminum phosphate aqueous solution to prepare a glue solution; and alternately laminating and bonding the wet fiber sheets and the reflecting screens by using a glue solution, and carrying out mold pressing and curing to obtain the high-temperature-resistant carbon-based thermal insulation material. The invention also provides the carbon-based thermal insulation material prepared by the method. The novel ultrahigh-temperature multi-layer material which is semi-cured, good in flexibility and excellent in strength after curing is prepared from the novel high-oxidation-resistance short carbon fibers and the high-temperature-resistant zirconium phosphate sol, preparation of the high-strength ultrahigh-temperature-resistant multi-layer heat insulation material is achieved, and the purpose of durable application of the material is achieved.

The invention relates to a preparation method of a hardness-adjustable microstructure antireflection film for a solar cell cover plate, and the method comprises the steps: S1, preparing a coating sol emulsion: mixing a precursor of a film forming material with an alcohol solvent, adjusting the pH value of a reaction system to be acidic or alkaline, and carrying out a first-stage stirring reaction; adjusting the reaction system to be slightly neutral or slightly acidic, adding a thermally-decomposable pore-forming emulsion and an emulsifier, carrying out a second-stage stirring reaction, and aging to obtain a coating sol emulsion; s2, coating and heat treatment: coating the surface of a glass substrate with the coating sol emulsion by adopting a roller coating method, and then carrying out heat treatment on the coated glass substrate; the heat treatment comprises preheating treatment for preliminarily curing the thin film and a tempering process for tempering the glass substrate and completely curing the thin film at the same time; in the tempering process, the pore-forming emulsion is pyrolyzed, and a porous microstructure is formed in the cured film. The hardness of the thin film can be effectively regulated and controlled, and the high anti-reflection effect is achieved through the microstructure.

The invention belongs to the technical field of flame-retardant nano materials, and particularly relates to a PBO-based intelligent flame-retardant early-warning film and a preparation method thereof, and the preparation method comprises the following specific steps: (1) preparing PNF sol; (2) preparing a graphene oxide dispersion liquid; (3) carrying out sol-gel transformation; (4) solvent replacement; (5) chemical crosslinking; (6) hot pressing orientation; a three-dimensional PBO nanofiber network and a graphene oxide sheet layer form a pearl-like microstructure through the synergistic effect of a strong electrostatic interaction and a physical entanglement effect, and the physical entanglement effect between PBO nanofibers is enhanced through the synergistic effect of a hydrogen-bond interaction between the PBO nanofibers and a chemical crosslinking effect between the PBO nanofibers and metal salt ions; the prepared PBO-based intelligent flame-retardant early-warning film has high electrical performance and mechanical performance and excellent insulation and flame retardance, the response speed of a fire alarm is greatly increased, and the working performance of a fire early-warning sensor can be improved.

The application relates to a kind of pipe furnace heat-insulating materials and its manufacturing method, including heat-insulating material body, further including the silicon sol layer coated on the surface of the heat-insulating material body, the aluminum sol layer coated on the surface of the silicon sol layer.The silicon sol layer and the aluminum sol layer are attached to the surface of the heat-insulating material body after drying, which well solves the powder dropping of the original heat-insulating material, and has no adverse reaction to the heating wire in the pipe furnace, no volatilization in the sintering process, can be attached to the heat-insulating material body for a long time, and will not affect the sintered product.

The invention belongs to the technical field of polymer composite materials, and relates to aerogel for radiation refrigeration, which takes biomass cellulose as a framework and is loaded with a functional layer formed by SiO2 sol derived from wollastonite and calcium phytate. Wherein the SiO2 microspheres form a radiation refrigeration layer, so that the material is endowed with high solar reflectivity (greater than or equal to 95.1%) and high infrared emissivity (greater than or equal to 91.2%); calcium phytate formed by coordination of phytic acid and calcium ions in wollastonite forms a flame-retardant layer, so that the material has rapid self-extinguishing capability. The preparation method comprises the following steps: carrying out acid treatment on wollastonite, and preparing silica sol by a sol-gel method; the radiation refrigeration layer is constructed by loading the radiation refrigeration layer on the cellulose aerogel; and then treatment is carried out through a phytic acid solution, so that calcium resource fixation and flame-retardant layer construction are synchronously realized. All-element high-value utilization of silicon and calcium components of wollastonite is achieved, the problem of waste liquid in a traditional process is solved, and the obtained aerogel integrates efficient radiation refrigeration, active flame retardance, greenness and low cost and has wide application prospects in the field of building energy conservation.

The invention discloses a porous SiO2 / TiO2-ZnO composite super-hydrophilic coating and a preparation method thereof, and belongs to the technical field of functional coatings and surface engineering. The preparation method comprises the following steps: carrying out ultrasonic dispersion on anatase type TiO2 and ZnO in a solvent to form a uniform composite dispersion liquid, mixing the uniform composite dispersion liquid with mesoporous SiO2 precursor sol prepared by a template method under an acidic condition, and adding a silane coupling agent and a spiropyrane derivative to carry out an interface bonding reaction to obtain composite sol; the composite sol is applied to the surface of a base material through a coating process, and the composite sol is obtained after drying and curing treatment. According to the coating prepared by the invention, TiO2 and ZnO form a heterojunction to enhance the photo-generated charge separation efficiency, and spiropyrane derivatives are introduced, so that synchronous improvement of efficient photocatalytic self-cleaning and controllable light response repair functions is synergistically realized in a single coating; the coating can be widely applied to the fields of building glass, automobile windows, solar cell cover plates and the like which need self-cleaning, antifogging and surface function maintenance.

The application discloses a black TiO2 / Fe-based medium-entropy alloy composite coating with antibacterial and degradation properties, which is composed of a Fe-based medium-entropy alloy coating and a black TiO2 sealing agent. The Fe-based medium-entropy alloy coating is sprayed on the surface of a substrate by a plasma spraying technology, and the porosity of the coating is 2.25% to 4.88%. The black TiO2 sealing agent prepared by a sol-gel method is used to seal the pores of the Fe-based medium-entropy alloy coating, thereby reducing the porosity of the coating and making the coating more compact. The Fe-based medium-entropy alloy coating has the antibacterial property of metal ions, and the black TiO2 sealing agent also has the photocatalytic effect under sunlight and near-infrared light, can produce a synergistic effect with the metal ions, and more efficiently improves the antibacterial effect of the coating. In addition, due to the photocatalytic activity of the black TiO2 sealing agent, the composite coating also has the function of degrading organic pollutants.

The application discloses a kind of radiation refrigeration heat insulation coatings, including primer and finish, primer includes deionized water, PH regulator, defoaming agent, hydroxypropyl methyl cellulose, wetting agent, dispersant, water-based polyurethane emulsion, aerogel, hollow glass microsphere, sepiolite, film forming aid;Finish includes deionized water, PH regulator, defoaming agent, hydroxypropyl methyl cellulose, dispersant, silicon oxide, zirconium oxide, rutile titanium dioxide, infrared reflective filler, film forming aid, defoaming agent, far infrared ceramic powder, potassium silicate, silica sol, titanium sol, silane modified acrylic emulsion, conductive mica powder.The coating has excellent solar reflectance and infrared emissivity, low thermal conductivity, and the coating has excellent high-temperature resistance, flame resistance and anti-staining effect.

The application relates to a solar cell and a preparation method thereof, a laminated cell and a photovoltaic module. The preparation method of the solar cell comprises the following steps: providing a substrate; preparing a titanium chalcogenide compound by using a solid-phase synthesis method; performing ultrasonic treatment on a mixture of the titanium chalcogenide compound and an oxidizing agent to obtain a titanium dioxide amorphous precursor solution; coating the titanium dioxide amorphous precursor solution on the surface of the substrate and performing first heat treatment to obtain an electron transport layer; forming a perovskite layer on the surface of the electron transport layer; forming a hole transport layer on the surface of the perovskite light-absorbing layer; and forming an electrode layer on the surface of the hole transport layer. The solid-phase method is combined with ultrasonic treatment to prepare an amorphous sol with low viscosity, good fluidity and uniform dispersion, and then a uniform wet film with high wettability and stable performance is prepared, so that the film thickness is uniform, the film solution can be quickly and uniformly spread on the surface of the substrate, and the method is suitable for large-area preparation.

The invention belongs to the technical field of refractory materials, and particularly relates to a high-thermal-shock-resistance unshaped refractory material and a preparation method thereof. The high-thermal-shock-resistance unshaped refractory material provided by the invention comprises corundum, magnesium aluminate spinel, a binding agent, nano micro powder, quartz glass powder, polymeric aluminum phosphate and sodium tripolyphosphate. The high-alumina cement, the alumina sol and the silica powder jointly form a binding agent, so that the overall expansion rate of the material is reduced, and the interface bonding strength and the cracking resistance in the thermal shock resistance process are improved; the alumina sol with low acid content and high solid content is prepared by adopting a hydrothermal method, so that the thermal expansion difference is reduced, thermal shock is buffered, and the thermal shock resistance of the unshaped refractory material is further improved; the nano carbon black, the nano cerium oxide and the nano aluminum oxide jointly form the nano micro powder, and the thermal shock resistance of the unshaped refractory material is remarkably improved through a synergistic mechanism of thermal conductivity regulation, grain refinement and interface strengthening.

The invention discloses a light silicon dioxide aerogel felt material for sound insulation and noise reduction in an airplane as well as a preparation method and application of the light silicon dioxide aerogel felt material. The light silicon dioxide aerogel felt material comprises a flexible felt material serving as a matrix and silicon dioxide aerogel filled in fiber gaps of the matrix, the preparation method comprises the following steps: dipping a flexible felt material matrix in silicon dioxide sol, carrying out heating treatment to enable the silicon dioxide sol to be gelled and cured in matrix fiber gaps to form a wet gel felt, and carrying out aging, aging and hydrophobic modification on the wet gel felt, and carrying out CO2 supercritical drying to prepare a soft and flexible light silicon dioxide aerogel felt; wherein the thickness of the light silicon dioxide aerogel felt is in positive correlation with the sound insulation index, and the light silicon dioxide aerogel felt is attached to a special-shaped curved surface in an aircraft cabin in an unstressed mode. In this way, the material is low in density, light in weight, excellent in sound insulation and heat insulation performance, soft, tough, capable of being attached to the curved surface of a cabin, convenient to install, hydrophobic, free of weight increment and stable in performance and can be used for sound insulation, noise reduction and heat insulation protection of airplanes.

The application discloses a preparation method of a layered structure silicon oxide film, and belongs to the technical field of deep processing of glass thin film. First, monodisperse polystyrene microsphere emulsion is used as raw material, and 2-5 layers of ordered colloid crystal templates are prepared on a substrate through a doctor blade method. Then, tetraethyl orthosilicate is used as a precursor, hydrolysis and condensation are carried out under catalysis of a specific acid-base sequence, and an SiO2 coating sol is prepared by combining an anionic surfactant as a soft template. Finally, the sol is used as a coating liquid, the above template is used as the substrate, and a film is formed by adopting a spin coating or a pulling method, the template is removed through drying and heat treatment at 400-600 DEG C, and a silicon oxide film with a layered, through and multi-level pore structure is obtained. The method is simple and controllable, the prepared film has the characteristics of low refractive index and high optical transmittance, and has important application prospects in the field of solar photovoltaic cells.

The invention belongs to the technical field of nano coatings, and particularly relates to a self-cleaning nano coating for a photovoltaic panel in an alpine region and a preparation method of the self-cleaning nano coating. The coating comprises a base layer and a super-hydrophobic photo-thermal layer covering the base layer; the base layer comprises a silane coupling agent and nano titanium dioxide sol; the super-hydrophobic photo-thermal layer comprises low-surface-energy substance modified multistage micro-nano rough silicon dioxide and near-infrared absorption type tungsten bronze nanoparticles, the multistage micro-nano rough silicon dioxide comprises silicon dioxide microspheres with the particle size of 200-500 nm, and silicon dioxide nanospheres with the particle size of 50-80 nm are attached to the surfaces of the silicon dioxide microspheres. In the invention, the multistage micro-nano rough silicon dioxide has higher mechanical stability and is not easy to integrally lose efficacy when being stressed, and when the multistage micro-nano rough silicon dioxide is extruded by ice crystals, each silicon dioxide nanosphere generates tiny displacement and deformation to dissipate stress instead of fracture caused by complete rigid resistance; the near-infrared absorption type tungsten bronze nanoparticles generate heat, so that the thickness of a water film between ice and the coating is increased, and the adhesive force of an ice layer is reduced.

The invention relates to a system and a method for preparing nano ultra-pure coal based on oxidation-extraction combination. The method comprises the following steps: mixing pulverized coal with the particle size of less than 300 meshes and an oxidant solution, stirring and reacting to oxidize the pulverized coal and expand the volume, and then washing and purifying to obtain oxidized intercalated coal; mixing the oxidized intercalated coal with a solvent, and carrying out high-speed shearing homogenization treatment to complete extraction and nanocrystallization stripping, so as to obtain a nano coal dispersion liquid; carrying out gradient centrifugal separation on the nano coal dispersion liquid to obtain nano ultra-pure coal sol; and freeze-drying the nano ultra-pure coal sol to obtain nano ultra-pure coal powder. The method disclosed by the invention is simple in process, mild in condition and environment-friendly, realizes deep purification and nanocrystallization of the coal, perfectly reserves an organic matter structure of the coal, and opens up a new path for application of the coal in the field of high-end materials.

This invention discloses a thermal insulation functional powder, masterbatch, its preparation method, and its applications, relating to the field of polymer materials technology. The thermal insulation functional powder with excellent dispersibility provided by this invention employs an indium tin antimony zinc multi-doped system and is prepared through a sol-gel-in-situ modification process, combined with stepwise pH control, γ-aminopropyltriethoxysilane surface modification, supercritical carbon dioxide drying, and low-temperature heat treatment, resulting in a particle size of 5-50 nm. This powder can be used to prepare thermal insulation slurries; it can also be further granulated with plastic chips and additives to obtain thermal insulation masterbatches; the obtained masterbatches can be blended with modified silica, antioxidants, etc., to form highly transparent, highly thermally insulating, and highly weather-resistant functional films suitable for construction, automotive, and other fields.

This invention discloses a method for preparing TiO2 nanoparticle colloids without organic and acid / base stabilizers and their applications. The method for preparing TiO2 nanoparticle colloids includes the following steps: S1, mixing a low-element amine, a hydrohalic acid, and a low-element alcohol to obtain reactant A; S2, adding a titanium salt to reactant A to obtain reactant B; S3, adding deionized water dropwise to reactant B and stirring thoroughly to obtain TiO2 nanoparticle colloids. x Precursor sol C; S4. Sol C is placed in a reactor and subjected to hydrothermal reaction to obtain TiO2 nanoparticle colloid. The TiO2 nanoparticles of this invention have uniform particle size and high crystallinity. The colloid does not contain acids, alkalis, or non-volatile organic compounds, and does not damage the substrate during subsequent film formation and device fabrication, eliminating the need for high-temperature annealing. When TiO2 nanoparticles are used as a mesoporous electron transport layer in perovskite solar cells, rigid cells can achieve a photoelectric conversion efficiency of over 22%, and flexible cells can achieve a photoelectric conversion efficiency of over 20%.

The invention discloses a transparent super-hydrophobic anti-icing coating based on a sol-gel method as well as a preparation method and application of the transparent super-hydrophobic anti-icing coating. The coating is prepared from a silica sol-gel hybrid material, the silica sol-gel hybrid material comprises the following raw materials in parts by mass: 20-50 parts of an organosilane precursor, 5-15 parts of nano-silica sol, 0.5-5 parts of a low surface energy modifier, 0.1-2 parts of a catalyst and 40-70 parts of an organic solvent, the transparent super-hydrophobic coating is prepared through a sol-gel method, and high light transmittance, super-hydrophobicity, long icing delay and good mechanical durability are integrated; meanwhile, the coating is mild in preparation process condition and good in repeatability; the coating is suitable for anti-icing protection of the surfaces of various outdoor equipment such as fan blades and solar photovoltaic panel cover plates, and can be widely applied.

The invention relates to the technical field of conductive ITO glass, in particular to large-size ultrathin conductive ITO glass based on a sol-gel method and a preparation method of the large-size ultrathin conductive ITO glass. An ITO film prepared by a traditional sol-gel method is poor in aging resistance and water vapor barrier property. Aiming at the technical problem, the invention provides the large-size ultrathin conductive ITO glass based on the sol-gel method, and the thickness of the large-size ultrathin conductive ITO glass is less than or equal to 1.7 mm. According to the invention, an interface enhancement layer constructed in situ is introduced, so that the bonding strength of an ITO film and a substrate is far higher than that of traditional physical adsorption, and the mechanical reliability and durability of a perovskite solar cell are remarkably improved. The gradient structure of the sol-gel ITO layer greatly reduces permeation channels formed by pores and cracks in a traditional process, meanwhile, the Al-doped SiO2 coating forms a compact amorphous network through a sol-gel method, gaps of a silicon-oxygen network can be filled by doping Al < 3 + >, permeation of water molecules and oxygen is effectively blocked, and the anti-corrosion performance of the coating is improved. And the water vapor transmission rate of the whole device is obviously reduced.

The application provides a salt-mist-resistant offshore photovoltaic glass and a preparation method thereof, and relates to the technical field of solar devices.The salt-mist-resistant offshore photovoltaic glass comprises a glass base material, a dense passivation layer and a surface hydrophobic layer, wherein the thickness of the dense passivation layer is 20-40 nm; the thickness of the surface hydrophobic layer is 110-150 nm; and the dense passivation layer comprises silicon dioxide, zirconium dioxide, rare metal oxide and nanoparticles.When the dense passivation layer is prepared, the silicon dioxide sol and the zirconium silicate sol can form a Zr-O-Si three-dimensional network structure, which can synergistically act with the silicon dioxide, the zirconium dioxide, the rare metal oxide and the nanoparticles, so that the light transmittance of the offshore salt-mist-resistant glass is improved, and the weather resistance of the salt-mist-resistant photovoltaic glass is improved.

This disclosure relates to the field of photovoltaic module technology, and discloses a biomimetic self-cleaning photovoltaic module and its preparation method, comprising: a photovoltaic module body, the photovoltaic module body including a solar cell and a tempered glass plate; the solar cell includes a light-receiving surface and a back-lighting surface arranged opposite to each other; the tempered glass plate is located on the light-receiving surface of the solar cell; a biomimetic self-cleaning film layer is located on the side of the tempered glass plate facing away from the solar cell; the biomimetic self-cleaning film layer includes a first film layer, a second film layer and a third film layer stacked sequentially in a direction away from the tempered glass plate; wherein, the side of the first film layer facing away from the tempered glass plate has a micron-level protrusion structure; the second film layer covers the first film layer; the microstructure of the second film layer is a nano-level branched structure; the third film layer is a hydrophobic film; the nano-level branched structure is formed by a sol-gel method. This disclosure can improve the surface hydrophobicity and self-cleaning performance of the biomimetic self-cleaning photovoltaic module, effectively improving the power generation efficiency of the photovoltaic module.

The application discloses a core-shell type barium-cobalt@cerium oxide catalyst and a preparation method and application thereof. The preparation process of the barium-cobalt@cerium oxide catalyst is as follows: ammonia water is added dropwise into a mixed solution of citric acid, cerium nitrate, cobalt nitrate and barium acetate until the mixed solution is neutral, then the mixed solution is placed into an oil bath pot and heated and stirred until a sol-gel state is formed, and finally high-temperature calcination and reduction are carried out. The non-noble metal catalyst prepared by the sol-gel method can efficiently catalyze and promote hydrogen production by solar ammonia decomposition at low temperature, and has great industrial application significance.

The invention relates to the technical field of coating preparation, in particular to a nano coating for a self-cleaning polycrystalline solar module and a preparation method, and the coating is formed by compounding a titanium dioxide nanotube, fluorosilane modified silicon dioxide aerogel, graphene quantum dots and a polyaniline-polypyrrole copolymer; the preparation method comprises the following steps: preparing titanium dioxide nanotubes through hydrothermal reaction and calcination, synthesizing aerogel through a sol-gel method, performing pyrolysis reduction to prepare quantum dots, and performing oxidative polymerization to obtain a conductive polymer; all the components are dispersed in a solvent in proportion, ultrasonic dispersion is performed after a flatting agent is added, a solar module is coated with the mixture through a dip-coating method, and the coating is formed through drying and ultraviolet curing. According to the self-cleaning nano-coating, through multi-component compounding, a multi-stage coarse structure is formed, super-hydrophobicity is achieved, the light response range is widened, the photocatalytic efficiency is improved, the electrical property is improved, and the photoelectric conversion rate is increased.

This invention discloses a heat-insulating and UV-blocking coating for glass and its preparation method, belonging to the field of glass functional coating technology. The coating is composed of an inorganic-organic hybrid film-forming system consisting of an aqueous fluorinated acrylate emulsion and aluminum sol, compounded with cesium tungsten bronze / ATO composite heat-insulating powder, rutile TiO2 UV-shielding powder, and special functional additives. The preparation method includes glass substrate cleaning and activation, nano-functional slurry sand milling and dispersion, coating liquid preparation, coating, and multi-mode curing. This invention solves the problems of poor weather resistance, imbalance between light transmission and blocking performance, limited construction, and high preparation cost of existing coatings by synergistic enhancement of multi-component nano-powders and optimization of hybrid film formation. It has high hardness, strong adhesion, and excellent weather resistance, and can achieve curing in multiple modes such as room temperature / low temperature / UV. It is suitable for factory mass production and on-site renovation construction, is green and environmentally friendly, and has controllable costs. It is applicable to glass heat-insulating and UV-blocking modification in the fields of construction, automobiles, and photovoltaics.

This invention relates to the field of self-cleaning glass spray technology, and more specifically, to a visible light-responsive antistatic and anti-oil self-cleaning glass spray and its preparation. The raw materials for the glass spray, by mass percentage, include the following components: solvent system 85.0-93.0%, fluorosilane-modified silica nano-sol 3.0-8.0%, nitrogen-doped nano-titanium dioxide 1.5-5.0%, nano-grade antimony tin oxide 0.5-2.0%, and additives 0.5-1.5%. This invention addresses the shortcomings of existing technologies by providing a glass spray that offers all-weather visible light self-cleaning, dual anti-oil properties, and active electrostatic shielding. It overcomes dependence on ultraviolet light, efficiently decomposing pollutants indoors and on cloudy days; it combines physical anti-fouling with chemical decomposition for long-lasting oil resistance; and it eliminates electrostatic adsorption through an ATO conductive network, reducing dust at the source. The product also boasts advantages such as high light transmittance, quick drying and easy operation, and strong coating adhesion, significantly reducing cleaning costs and being environmentally friendly.