483 results about "Titanate" patented technology

The invention provides a high-stability lithium-rich manganese-based positive electrode material and a preparation method thereof, and relates to the technical field of lithium-rich manganese-based positive electrode materials, and the method comprises three steps of preparation of a homogeneous precursor, solid-state mechanical fusion doping and coating, and high-temperature sintering; a lithium-rich manganese-based precursor is prepared by adopting a homogeneous coprecipitation process, uniform distribution of metal ions is ensured, then an aluminum source, a zirconium source and a fluorine source are introduced as doping agents, phosphate and a titanate coating agent are combined, doping and coating integrated treatment is realized through mechanical ball milling, and the lithium-rich manganese-based composite material is obtained. And finally, mixing with a lithium source in an argon atmosphere, and carrying out high-temperature sintering of temperature programming and staged heat preservation to form a stable composite coating layer in situ. Therefore, manganese ion migration is effectively inhibited through lattice doping, a layered structure is prevented from being converted into spinel or rock salt phase, meanwhile, a nanoscale ion / electron transmission channel is constructed, interface impedance is reduced, and the charging and discharging efficiency under high voltage is improved.

The invention provides a photo-thermal evaporation material based on black titanium dioxide as well as a preparation method and application of the photo-thermal evaporation material. The preparation method comprises the following steps: mixing urea, absolute ethyl alcohol and tetrabutyl titanate into a solution A, mixing absolute ethyl alcohol, ultrapure water and hydrochloric acid into a solution B, dropwise adding the solution B into the solution A, mixing to form a white colloid, heating in a water bath, drying, and calcining in a nitrogen atmosphere to obtain black titanium dioxide powder; the preparation method comprises the following steps: fully mixing a certain amount of black titanium dioxide, sodium alginate and ultrapure water to form a uniform dispersion liquid, dipping the pretreated polyurethane sponge in the dispersion liquid, and crosslinking with a calcium chloride solution to prepare the photo-thermal evaporation material of the black titanium dioxide-calcium alginate composite hydrogel. The photo-thermal evaporation material breaks through the photo-thermal application bottleneck of traditional titanium dioxide, has excellent evaporation rate and seawater desalination performance, and can effectively remove various printing and dyeing wastewater to obtain clean water.

The invention relates to the technical field of refractory materials, in particular to an antioxidant and application thereof in steel ladle slag line bricks, and the antioxidant comprises a Si / SiC multiphase material, modified nano Al2O3 and CaF2; the ladle slag line brick comprises an antioxidant, fused magnesite, crystalline flake graphite and phenolic resin. Si-SiC compound waste is subjected to magnetic separation and acid pickling, then a SiO2 passivation layer is formed through pre-oxidation, moisture and air in the storage period are isolated, and a titanate coupling agent is introduced to improve the wettability and compatibility with phenolic resin. P2O5 released by phosphate on the surface of the modified nano Al2O3 at a high temperature reacts with alkali (earth) metal migrated to a SiO2 oxide layer to prevent the alkali (earth) metal from forming a low-melting-point eutectic substance, CaF2 reacts with SiO2 along with temperature rise, a passivation layer is broken, internal Si and SiC are directly exposed, and boron oxide of the modified nano Al2O3 remarkably reduces activation energy and a temperature threshold value of the reaction of CaF2 and SiO2.

The invention provides a preparation method of a metal-based ceramic composite membrane with a catalytic ozone function. The preparation method comprises the following steps: preparing functional powder by taking tetrabutyl titanate as a titanium source and silver nitrate or ferric nitrate as a catalytic active metal source and adopting a sol-gel method; a porous metal pipe is used as a supporting body, metal powder and functional powder which are made of the same material as the supporting body are mixed to prepare functional slurry, the functional slurry is evenly deposited on the inner wall of the supporting body through vacuum filtration, and powder particles which are not firmly combined are removed through back flushing; and finally, the binding force between the functional film layer and the metal matrix is improved through high-temperature heat treatment. Wherein the thermal expansion coefficient difference between the metal supporting body and the functional film layer can be reduced by adding the metal powder, the metal powder is melted and diffused in the high-temperature heat treatment stage, and metallurgical bonding is formed between the functional powder and the metal substrate. The method is simple in process, and the prepared metal-based ceramic composite membrane has the advantages of being high in membrane layer binding force, not prone to falling off, high in catalytic activity, high in anti-pollution capacity, stable in operation and the like.

The present application provides a solid-state hydrogen storage material and a preparation method and application thereof. Specifically, the preparation method comprises the following steps: (1) ball-milling a magnesium-based alloy powder, a light metal hydride, a nano-carbon material, a composite catalyst powder and an interface modifier to obtain a mixed powder; and (2) sintering the mixed powder under vacuum at 200-350 DEG C for 2-5 hours to obtain a sintered body, wherein: the magnesium-based alloy powder is a Mg-Mn-Al alloy powder; the light metal hydride is a mixture of LiAlH4 and NaBH4; the nano-carbon material is selected from one or more of graphene and carbon nanotubes; the composite catalyst powder is a mixture of TiO2, Fe3O4, CeO2 and La2O3; and the interface modifier is selected from one or more of a silane coupling agent and a titanate coupling agent. The solid-state hydrogen storage material has high hydrogen storage capacity, fast hydrogen absorption and desorption rate and good cycle stability.

The invention provides a modified high-temperature-resistant heat-insulating anticorrosive coating and a preparation method thereof. The modified high-temperature-resistant heat-insulating anticorrosive paint comprises a component A and a component B, the component A comprises organic silicon resin, epoxy resin, a polyaniline-nano metal oxide-graphene oxide composite material, hollow glass beads and hexagonal boron nitride; the component B comprises an organic silicon modified amine curing agent, an anhydride curing agent, a titanate catalyst and an accelerant. The modified high-temperature-resistant heat-insulating anticorrosive paint has excellent corrosion resistance, high-temperature-resistant heat-insulating performance and high-temperature cracking resistance, and also has the advantages of strong adhesive force and short surface drying time. The modified high-temperature-resistant heat-insulating anticorrosive paint provided by the invention is suitable for corrosion protection of metal components exposed in high-temperature and complex corrosive environments for a long time.

The invention discloses a graphene aerogel modified elastic graphite material and a preparation method thereof, and the graphene aerogel modified elastic graphite material comprises the following components by mass: 50-80 parts of crystalline flake graphite; 8 to 15 parts of graphene aerogel; 3 to 8 parts of aminated modified boron-doped carbon nanotubes; 2 to 6 parts of hydroxyapatite-cerium oxide composite nano particles; 1 to 4 parts of a polyimide-montmorillonite nano composite material; 0.5 to 3 parts of titanate coupling agent modified nano silicon dioxide; 1-3 parts of a dispersant; 2-5 parts of a binder; the amination modified boron-doped carbon nanotubes can enhance the electrical conductivity and interface bonding force of the material, the hydroxyapatite-cerium oxide composite nanoparticles improve the high-temperature stability and mechanical toughness of the material, and the polyimide-montmorillonite nanocomposite improves the corrosion resistance and resilience durability of the material. And the titanate coupling agent modified nano silicon dioxide further optimizes the dispersion uniformity of all the components, and the comprehensive performance of the material is remarkably improved.

The invention relates to the technical field of organic high-molecular compound synthesis, in particular to a modified ABS material diffusion plate and a preparation method thereof.The preparation method comprises the steps that dried ABS resin and acrylonitrile-butadiene-styrene copolymer are mixed to prepare a modified ABS base material; mixing organic silicon microspheres and nano barium sulfate to obtain a modified light diffusion agent; judging that the modified light diffusant is unqualified by comparing the refractive index absolute difference between the modified light diffusant and the modified ABS base material, and performing modification compensation; a titanate coupling agent is determined to be adopted for modification according to the content of inorganic particles of the modified light diffusion agent; mixing the modified light diffusant with an antioxidant system, an ultraviolet protective agent and a processing aid to obtain a functional additive; and mixing with a modified ABS (Acrylonitrile Butadiene Styrene) base material, and extruding by using a twin-screw extruder to Through multi-parameter feedback and accurate compensation control, the problems that the compatibility of the modified light diffusion agent and the base material is poor and the stability of the machining process is insufficient are effectively solved.

The invention provides an anion-doped perovskite type titanate material and a preparation method and application thereof, the structural formula of the anion-doped perovskite type titanate material is AxByTiOzN1-z, A is an alkali metal element, B is a rare earth element, N is an anion element, 0 lt; x is less than or equal to 1, 0lt; y < = 1, 0lt; z < = 4. The prepared anion-doped perovskite type titanate material is applied to a negative electrode of a lithium ion battery, and compared with a traditional perovskite type titanate material, the anion-doped perovskite type titanate material has better fast charging performance and power characteristics, ultra-long cycle life and excellent safety.

The invention discloses a water treatment filtering material and a preparation method thereof, and relates to the technical field of filtering materials. When the water treatment filtering material is prepared, firstly, acrylonitrile, itaconic acid and ethylene 2-(methacryloyloxy) ethyl phosphate are copolymerized to prepare copolymerized modified polyacrylonitrile; the preparation method comprises the following steps: carrying out hydrothermal reaction on a copper source and tetrabutyl titanate, and calcining to obtain copper-doped nano titanium dioxide; the copper-doped nano titanium dioxide and KH-550 are subjected to a reaction, and modified nano titanium dioxide is prepared; carrying out electrostatic spinning on the copolymerized modified polyacrylonitrile, and carrying out nano-spray loading on the modified nano titanium dioxide to prepare a modified polyacrylonitrile fiber membrane; and reacting the modified polyacrylonitrile fiber membrane in a covalent organic framework growth solution to prepare the water treatment filtering material. The prepared water treatment filtering material has the advantages of being antibacterial, anti-pollution, high in filtering efficiency and long in service life.

The invention provides a method for improving the blackness of a blue phase of a TPV material, and belongs to the technical field of the blackness of the TPV material.The method comprises the steps that modified carbon nanotubes and a titanate coupling agent are mixed for ball-milling surface treatment, the specific surface area change rate is used as a key control parameter, the optimal grinding time is calculated in combination with a surface energy density mechanism equation, and the blackness of the blue phase of the TPV material is improved. A gradual dispersion process of premixing, double-rotor internal mixing and single-screw extrusion is adopted, real-time parameter adjustment and dispersion state prediction are performed by applying a dispersion optimization model, and an upper-layer model taking maximization of blue phase blackness as a target and a lower-layer model taking optimization of grinding time matching as a target are established for game optimization; the optimal process parameter combination is obtained through multi-round iteration until convergence, finally ideal dispersion and optical performance matching of the carbon nanotubes in the TPV material are achieved, and the technical problem that the blackness of the blue phase of the TPV material is not high enough is solved.

The corundum-silicon carbide-mullite castable is prepared from sintered mullite particles, silicon carbide fine powder, activated aluminum oxide micro powder, silicon dioxide micro powder, composite rare earth oxide fine powder, aluminum titanate fine powder, a binding agent, a water reducing agent, explosion-proof fibers and porous composite corundum-silicon carbide particles. The porous composite corundum-silicon carbide particles are formed by sintering fused corundum particles and nano silicon carbide powder through in-situ reaction, micron-sized pore channels which are communicated with one another are formed in the porous composite corundum-silicon carbide particles, and the surfaces of the particles are coated with a compact mullite-corundum complex phase layer, so that thermal stress can be effectively buffered, and permeation of zinc and alkali vapor can be blocked; the low thermal expansion characteristic of aluminum titanate and the grain boundary purification effect of rare earth oxide are matched, thermal shock resistance and erosion resistance are synergistically improved, and excellent thermal shock resistance, chemical erosion resistance, high strength and wear resistance are shown under the harsh working condition of the zinc oxide rotary kiln.

The invention relates to a heat-resistant dealcoholized heat-conducting organic silicon adhesive and a preparation method thereof, and belongs to the technical field of high polymer materials. The adhesive is prepared from the following raw materials in parts by weight: 100 parts of trimethoxysilyl terminated polydimethylsiloxane, 1 to 20 parts of a heat-resistant plasticizer, 100 to 800 parts of heat-conducting powder, 3 to 10 parts of heat-resistant filler, 1 to 15 parts of a silane crosslinking agent and 0.5 to 5 parts of a titanate catalyst. The heat-resistant filler is selected from one or more of ferric oxide, cerium oxide, titanium dioxide, zirconium dioxide, carbon black and phthalocyanine blue. Through reasonable proportioning of the raw materials and addition of the heat-resistant filler, the adhesive forms a compact siloxane network after being cured, has excellent heat conductivity, heat resistance and adhesive performance, and is suitable for heat dissipation and adhesive application in the fields of high-power electronic equipment, new energy automobiles, aerospace and the like. The preparation method is simple and easy for industrial production.

The invention discloses a preparation method of TiO2 powder with a rutile and anatase core-shell structure, and particularly relates to the technical field of photocatalytic material preparation. According to the method, rutile phase TiO2 powder is used as a core material, a titanate intermediate layer is formed on the surface of a particle through an accurately controlled hydrothermal alkali treatment process, and then a surface layer phase is converted into an anatase phase through acid pickling treatment and controllable heat treatment, so that a complete core-shell heterojunction structure is constructed. The process flow is relatively simple, the cost is controllable, the phase structure conversion rate is high, and the shell thickness can be accurately regulated and controlled. The obtained TiO2 core-shell structure powder has excellent structural stability of a rutile phase and high surface reaction activity of an anatase phase, and shows remarkably enhanced photocatalytic degradation performance under the condition of ultraviolet irradiation, and the catalytic efficiency of the TiO2 core-shell structure powder is greatly improved compared with that of single rutile phase TiO2; and a new process method is provided for large-scale preparation of efficient photocatalytic materials.

The invention discloses a wear-resistant and corrosion-resistant modified polyethylene special pipe and a preparation method thereof, and relates to the technical field of high polymer materials. The high-density polyethylene composite material is prepared from the following raw materials in parts by mass: 360 to 440 parts of high-density polyethylene, 100 to 120 parts of an ethylene-1-octylene copolymer, 15 to 20 parts of modified nanotubes, 20 to 25 parts of a composite flame retardant, 8 to 10 parts of a cold-resistant toughening agent, 0.2 to 0.4 part of an antioxidant 1010 and 0.2 to 0.4 part of an antioxidant 168. The modified nanotube is prepared by the following steps: pretreating a multi-walled carbon nanotube with a nitric acid aqueous solution, compounding the pretreated multi-walled carbon nanotube with tetrabutyl titanate and aluminum nitrate nonahydrate, heating to 800 DEG C in a nitrogen atmosphere, treating the multi-walled carbon nanotube with a mixed gas of methane, nitrogen and ammonia gas for 2-3 hours at 800 DEG C, and finally cooling the multi-walled carbon nanotube in the nitrogen atmosphere. And due to the introduction of the composite flame retardant and the like, the impact resistance, wear resistance, flame retardance and corrosion resistance of the polyethylene pipe are effectively improved.

This invention relates to a modified titanium dioxide for matting polyester fibers and its preparation method. The modified titanium dioxide comprises a mesoporous titanium dioxide core and a cysteine ​​graft layer grafted into the pores of the mesoporous titanium dioxide. The mesoporous titanium dioxide core is prepared by evaporation-induced self-assembly using an alkenyl sulfonate surfactant as a liquid crystal template and tetraethyl or tetrabutyl titanate as the titanium source. Due to the self-polymerization reaction of the alkenyl sulfonate, the resulting polyalkenyl sulfonic acid compound reduces the crystallinity of the mesoporous titanium dioxide, thereby significantly reducing its photocatalytic activity. The mesoporous titanium dioxide is mixed with cysteine ​​and heated to graft cysteine ​​into its pores. The presence of cysteine ​​results in the modified titanium dioxide exhibiting both good matting properties and suppressed photocatalytic activity, preventing fiber structure damage from prolonged ultraviolet irradiation when applied to polyester fibers.

The invention belongs to the technical field of plastic filling modification, and discloses a high-specific-gravity polypropylene filling master batch and a preparation method thereof. The high-specific-gravity polypropylene filled master batch is mainly prepared from the following raw materials in parts by mass: 8-28 parts of polypropylene, 70-92 parts of modified barium sulfate powder, 1-4 parts of a lubricant, 4-8 parts of a titanate coupling agent, 3-6 parts of zinc stearate and 0.5-2 parts of an antioxidant. The barium sulfate powder subjected to surface modification treatment is added into the polypropylene master batch, so that the polypropylene master batch has very high specific gravity and can be filled and modified in various high polymer material products with specific gravity requirements.

The invention relates to a talcum powder filled polypropylene composite material based on surface modification and process cooperation and an injection molding pocking mark defect inhibition method. The material is composed of co-polypropylene, acidic salt-titanate composite modified talcum powder, flaky mica (5-10 [mu] m), a POE flexibilizer, a zeolite molecular sieve, an MAH-g-PP compatilizer, a zinc stearate dispersant and the like. According to the invention, the three measures of surface modification treatment, formula design and process purification technology are combined, and the problem of pitting defects (surface pits and white spots) generated in the injection molding process of the talcum powder filled polypropylene composite material is mainly solved. Through filler surface modification treatment, formula design and a process purification technology, the hard spot defect rate is reduced by about 85%, and the method is suitable for products with high surface quality requirements, such as automobile bumpers and instrument panels.

The invention discloses a preparation process and application of a photovoltaic solder strip precoating flux, and belongs to the technical field of energy conservation and environmental protection. According to the welding flux, polyurethane modified epoxy resin and photosensitive acrylate serve as matrixes, modified carbon quantum dots, a nano welding-aid active agent and a modified dicyandiamide curing system are introduced, fumed silica, polyether modified organic silicon, a titanate coupling agent, an antioxidant and a flatting agent are compounded, and high-speed dispersion, grinding and vacuum defoaming are conducted to obtain the welding flux. The obtained pre-coated flux forms a coating through precise coating, cross-linking curing is conducted under the UV-LED segmented photocuring and thermocuring conditions, the welding strength of a welding strip and the adhesive force of the coating can be remarkably improved, corrosion resistance is enhanced, VOC emission is reduced, and the pre-coated flux is suitable for large-scale production of efficient and long-life photovoltaic modules.

The invention provides a prismatic titanium diboride reinforced boron nitride-based conductive ceramic evaporation boat and a preparation method thereof, and belongs to the technical field of ceramic evaporation boats. The step of preparing the boron nitride matrix comprises the following steps: adding boron nitride powder into a nitric acid solution to obtain pretreated boron nitride powder; adding the pretreated boron nitride powder into absolute ethyl alcohol, adding tetrabutyl titanate and deionized water, adjusting the pH value to 4.0-4.3, stirring for 1.2-1.5 hours at the temperature of 30-32 DEG C, drying and calcining to obtain a boron nitride matrix; the prepared conductive ceramic evaporation boat is low in resistivity, high in strength, excellent in corrosion resistance and good in comprehensive performance.

At least one embodiment of the invention provides a preparation method of sponge titanium, which comprises the following steps: pretreating bauxite tailings to obtain a first mixture; carrying out acid treatment on the first mixture, and filtering to obtain a second mixture; putting the second mixture into a reaction kettle containing an alkaline substance to react so as to convert the ferric titanate into titanate and ferric oxide or ferrous hydroxide to obtain a third mixture; carrying out suction filtration treatment on the third mixture to obtain a first solid phase and a first liquid phase, and drying and grinding the first solid phase; roasting the dried and ground first solid phase to form an iron elementary substance, and carrying out magnetic separation to remove the iron elementary substance; adding an acidic material into the first liquid phase for reaction to obtain metatitanic acid colloid, and washing the metatitanic acid colloid; the metatitanic acid colloid is subjected to calcination, chlorination reaction and replacement reaction in sequence to obtain the sponge titanium. The sponge titanium obtained through the preparation method is high in purity.

The application discloses a water treatment filtering material and a preparation method thereof, and relates to the technical field of filtering materials. In the preparation of the water treatment filtering material, acrylonitrile is first copolymerized with itaconic acid and 2-(methacryloyloxy)ethyl phosphate to obtain copolymerized modified polyacrylonitrile; a copper source is hydrothermally reacted with tetrabutyl titanate and then calcined to obtain copper-doped nanometer titanium dioxide; the copper-doped nanometer titanium dioxide is reacted with KH-550 to obtain modified nanometer titanium dioxide; the copolymerized modified polyacrylonitrile is electrospun and nanometer-sprayed to load the modified nanometer titanium dioxide to obtain a modified polyacrylonitrile fiber membrane; and the modified polyacrylonitrile fiber membrane is reacted in a covalent organic framework growth solution to obtain the water treatment filtering material. The water treatment filtering material prepared by the application has the advantages of antibiosis, anti-pollution, high filtering efficiency and long service life.

This invention discloses an energy storage type TiO2 / CN X The photoanode of WO3 composite material and its preparation method include the following steps: preparing WO3 nanorods by hydrothermal method; adding WO3 nanorods and anionic surfactant to water, sonicating, adding pyrrole, stirring, and then adding an initiator solution dropwise under ice bath conditions, stirring, and obtaining WO3 / PPy composite after reaction; adding WO3 / PPy composite and anionic surfactant to an alcohol solution, sonicating and stirring, adding tetrabutyl titanate, glacial acetic acid and acetone, and then adding an aqueous alcohol solution dropwise, transferring to a hydrothermal reactor for reaction, obtaining precursor TiO2 / PPy / WO3 composite after hydrothermal reaction; loading the precursor TiO2 / PPy / WO3 composite onto a conductive substrate. TiO2 / CN X / WO3's excellent sustained photocathode protection performance can be attributed to the highly conductive CN X In synergy with WO3, a narrow-bandgap semiconductor with energy storage properties, TiO2 nanoparticles with stable photoelectrochemical properties serve as the main material, ensuring the stability of the photoelectric performance of ternary materials.

The invention provides a sodium ion battery and a preparation method of the sodium ion battery, and relates to the technical field of batteries. The preparation method of the negative electrode material of the sodium ion battery comprises the following steps: treating titanium-containing blast furnace slag to obtain metatitanic acid; metatitanic acid is treated, titanate is obtained, and the titanate has the nanoflower morphology; titanate is treated to obtain titanium dioxide, and the titanium dioxide has a nanoflower morphology and has oxygen vacancies. According to the negative electrode material prepared by the preparation method of the scheme, the migration rate of sodium ions can be improved, the specific capacity and the cycling stability of the negative electrode material are improved, and the negative electrode material has relatively good rate capability; and the negative electrode material is prepared by taking the titanium-containing blast furnace slag as a raw material, so that the cost of the raw material can be greatly reduced, and the environmental problem caused by solid waste accumulation can be solved.

The invention relates to the technical field of alloy additives, and discloses a high-toughness corrosion-resistant manganese additive for aluminum alloy and a preparation and application method thereof.The additive is prepared from, by mass, 50-65 parts of nanometer manganese alloy powder, 10-18 parts of magnesium-zirconium composite modifier, 4-9 parts of titanate coupling agent, 3-6 parts of dispersing aid and 2-5 parts of high-temperature stabilizer; the magnesium-zirconium composite modifier is a compound system of magnesium nitrate and zirconium oxychloride, and the molar ratio of magnesium element to zirconium element in the magnesium-zirconium composite modifier is 3: 1-5: 1. The dispersion uniformity of the additive is larger than or equal to 96%, after the additive is added, the impact toughness of the aluminum alloy is improved by 45%, the salt spray corrosion resistance reaches 600 h or above, the high-temperature (300 DEG C) stability is improved by 30%, the additive is suitable for various aluminum alloy systems such as 2024 and 6063, the preparation cost is reduced by 22%, and the industrial prospect is wide.

The invention belongs to the field of polymer composite materials, and discloses an antistatic composite material for a safety helmet and a preparation method of the antistatic composite material. Comprising the following components: 70 to 90 parts of a PC / ABS blending matrix, 12 to 20 parts of basalt fiber treated by a titanate coupling agent NDZ-311, 4 to 8 parts of a graphene quantum dot modified carbon nanotube-polyethylene glycol composite antistatic agent, 3 to 6 parts of polyaryletherketone micro powder, 0.2 to 0.6 part of an antioxidant 1010 and 0.4 to 1.0 part of calcium stearate. Wherein the mass ratio of PC to ABS in the PC / ABS blended matrix is (6: 4)-(7: 3); the invention aims to solve the problems that in the prior art, a single antistatic agent is difficult to consider the antistatic effect and the mechanical property, or materials are embrittled due to high addition amount, or the antistatic property fluctuates along with the environment and is easy to lose due to low addition amount; the interface bonding force between the conventional reinforced fiber and the PC / ABS matrix is weak, and the mechanical strength is limited to be improved; the long-term aging resistance of the material is poor, and the long-term use requirements of outdoor, chemical and other severe environments cannot be met.

The invention relates to a lasting antibacterial photocatalyst particle and a preparation method thereof, and the preparation raw materials of the lasting antibacterial photocatalyst particle comprise the following components in parts by weight: 10-15 parts of butyl titanate, 5-10 parts of tetraethoxysilane, 1-2 parts of a rare earth compound, 8-15 parts of a silane coupling agent, 250-280 parts of absolute ethyl alcohol, 5-10 parts of industrial hydrochloric acid and 5-10 parts of deionized water. According to the photocatalyst particles, titanium dioxide serves as a core body, silicon dioxide serves as a shell layer, the silicon dioxide shell layer is of a mesoporous structure, and rare earth elements are distributed between the titanium dioxide core body and the silicon dioxide shell layer. Through the synergism of the titanium dioxide core, the porous silicon dioxide shell and the rare earth elements distributed between the core and the shell, the photocatalyst particles have the excellent effects of lasting and efficient antibacterial property and high stability.

The application provides a composite photocatalytic material and a preparation method and application thereof, a purification device and a purification apparatus, and belongs to the technical field of photocatalysis.The application provides a preparation method of a composite photocatalytic material, which comprises the following steps: mixing BiVO4, GO and water, and then performing heat treatment to obtain a slurry containing GO-wrapped BiVO4; mixing the slurry with a butyl titanate sol precursor, and then performing hydrothermal reaction and reduction reaction to generate nano-TiO2 gelatinization wrapped BiVO4 and rGO loaded on the outer surface of the nano-TiO2 gelatinization, so as to obtain the composite photocatalytic material.In the application, the butyl titanate sol precursor is used to prepare TiO2, and the prepared TiO2 has the property of gelatinization; the viscosity of the TiO2 is improved, the connection strength between the TiO2 and the rGO is improved, the loss of the TiO2 is reduced, and the purification time is prolonged.

The application relates to a preparation method of a TiO2 / Sb2O3 / PSAC heterojunction sterilization composite material, which comprises the following steps: 1) adding a cationic surfactant, tetrabutyl titanate, antimony trichloride or antimony pentachloride into deionized water in sequence and stirring until the solution is white; 2) placing a FOSS crucible with coal-tar pitch-based spherical activated carbon into a high-pressure reaction kettle with concentrated nitric acid, heating, washing with deionized water until neutral, and naturally air-drying; 3) placing the dried coal-tar pitch-based spherical activated carbon into the white solution, stirring, finally adding sodium hydroxide, stirring, and then placing into a high-pressure reaction kettle, heating and keeping for a period of time; and naturally cooling, centrifugalizing, washing and drying. The application effectively combines the adsorption performance and the photocatalytic performance of the activated carbon through a hydrothermal one-step in-situ method, increases the mechanical performance, and can have high sterilization efficiency under the excitation of sunlight.

The invention belongs to the technical field of biomedical materials, and relates to an ultrasonic-induced inorganic afterglow luminescent material for promoting tissue and organ defect repair and a preparation method and application thereof, the preparation method comprises the following steps: S1, dispersing an afterglow luminescent material and citric acid in an aqueous solution to obtain a hydrothermal reaction precursor solution; s2, adding a titanium oxide-based material into the precursor solution provided in S1, and carrying out a hydrothermal reaction in a reaction kettle to obtain a titanium oxide-based luminescent material loaded with an afterglow material; wherein the afterglow material is one or more of an aluminate-based afterglow luminescent material and a titanate afterglow luminescent material. Compared with the prior art, the prepared ultrasonic-induced inorganic afterglow luminescent material is formed by compounding titanium oxide and an afterglow material, and afterglow luminescence can be generated under ultrasonic excitation. Microalgae with photosynthesis are loaded, oxygen is supplied to the hypoxic bone defect part through ultrasonic regulation and control, revascularization is promoted, and efficient repair of bone defects is achieved.