74 results about "Anatase titanium dioxide" patented technology

This invention discloses a photocatalytic negative oxygen ion near-field purification eyeglass component and its preparation method. The component includes an eyeglass substrate (lens or frame). From the inside out, the outer surface of the substrate is sequentially provided with a functional film layer, a plasma activation layer, and an outermost composite film layer of nitrogen-doped anatase titanium dioxide supported on a Pt-Au-Ag-Pd quaternary noble metal. This film is responsive to the entire visible light band from 400nm to 700nm and stably generates ≥1000 negative oxygen ions / cm³ within a 30cm near-field breathing zone of the wearer's mouth and nose under normal lighting conditions. It also achieves antibacterial and bacteriostatic effects, degradation of harmful gases, surface self-cleaning, and anti-fogging functions. This invention optimizes the film structure, allowing the photocatalyst to directly contact air and visible light, maximizing catalytic efficiency. It is also compatible with lenses and frames, integrating multiple effects such as eye protection, purification, antibacterial properties, and anti-fogging. The process is universal and mass-producible.

The invention discloses a method for growing titanic acid / titanium dioxide nanoparticles on a titanium carbide Mxene sheet layer, and relates to a method for growing titanic acid / titanium dioxide nanoparticles on the surface of a titanium carbide Mxene sheet layer structure. The method comprises the following steps: firstly, etching titanium aluminum carbide at room temperature by adopting hydrofluoric acid to obtain a layered titanium carbide Mxene material, then dispersing the layered titanium carbide Mxene material in hydrogen peroxide with the mass percent concentration of 20-30%, simultaneously adding 0.6 ml of 65% nitric acid, and reacting for 24-72 hours at the temperature of 20-80 DEG C, so that titanic acid nanoparticles can grow on the surface of a titanium carbide Mxene lamellar structure; and subsequently carrying out heat treatment in an air atmosphere at 200-500 DEG C, and converting the titanic acid into anatase titanium dioxide. The preparation temperature is low without high pressure; the nanoparticles keep a lamellar structure aggregation state, and are expected to be applied to the fields of adsorption, photocatalysis and the like.

The invention relates to a preparation method of a graphene-like carbon nitride / titanium dioxide hollow sphere composite material with a sandwich structure, which comprises the following steps: taking anatase titanium dioxide coated silicon dioxide nanoparticles, ultrasonically dispersing into a sodium hydroxide solution, and reacting at 60 DEG C for 3 hours to obtain a crude product; centrifugally separating, washing and drying to obtain titanium dioxide hollow spheres; the preparation method comprises the following steps: adding melamine, titanium dioxide hollow spheres and bicarbonate into deionized water, stirring for 1 hour at the speed of 300r / min under an ultrasonic-assisted condition, carrying out rotary evaporation to remove moisture, grinding, carrying out calcination reaction for 3 hours at the temperature of 500-550 DEG C in a muffle furnace, cooling, grinding into powder, washing and drying to obtain a product. The preparation method of the graphene-like carbon nitride / titanium dioxide hollow sphere composite material with the sandwich structure, provided by the invention, has the characteristics of simplicity and convenience in operation, high catalytic activity, widening of the visible light response range, improvement of the specific surface area and good recyclability.

The invention relates to an omega-3 lipid detection method based on an inorganic matrix enhanced MALDI mass spectrum. The invention discloses an omega-3 supplement identification technology of an inorganic matrix enhanced MALDI mass spectrum, which can efficiently and accurately carry out comprehensive analysis on lipid types, double bond positions and oxidation degrees in a complex lipid sample. The technology comprises the following steps: selecting an omega-3 supplement, mixing the omega-3 supplement, a cycloaddition reagent and an inorganic matrix, carrying out MALDI laser-driven online cycloaddition reaction, and analyzing the lipid double-bond isomer by mass spectrum data. The selected 25nm hydrophilic anatase titanium dioxide obviously improves the sensitivity of lipid double bond identification, the vacuum environment of the MALDI mass spectrum and shorter laser irradiation time (30s) effectively protect lipid from additional oxidation, and the original oxidation information of the lipid is retained. The method successfully identifies 30 main omega-3 lipids in four omega-3 supplements, and reveals significant differences of lipid types, omega-3 purity and lipid oxidation degrees. The method has a wide application prospect in the aspect of high-efficiency and high-throughput screening of other complex lipid information samples such as omega-3 supplements and the like.

The invention discloses an antibacterial wear-resistant composite nylon yarn and a preparation process thereof, and relates to the technical field of textile materials. The invention discloses an antibacterial wear-resistant composite nylon yarn. The nylon 66 composite material is prepared from the following raw materials in parts by weight: 45 to 65 parts of nylon 66 slices, 2 to 5 parts of nano silicon carbide, 3 to 7 parts of nano zinc oxide, 4 to 8 parts of micron-sized zirconium dioxide, 6 to 10 parts of modified sepiolite fiber, 5 to 9 parts of polyvinyl butyral, 7 to 12 parts of butyl acrylate-styrene copolymer, 4 to 8 parts of polyethersulfone, 1 to 3 parts of hexadecyl trimethyl ammonium bromide and 0.5 to 2 parts of hindered amine light stabilizer 944. The self-repairing coating is prepared from the following components in parts by weight: 0.3 to 1 part of dicumyl peroxide, 2 to 4 parts of adipic dihydrazide, 3 to 6 parts of nanoscale anatase type titanium dioxide, 5 to 10 parts of self-repairing microcapsules and 8 to 15 parts of modified cellulose nanowhiskers. According to the invention, various functional raw materials are cooperated, so that the nylon yarn has antibacterial and wear-resistant properties and the like. The performance of the raw materials is improved through the modified cellulose nanowhiskers and the sepiolite fibers. And the product quality and performance are ensured through accurate technological parameters, the requirement for high-performance materials is met, and the application prospect is achieved.

The invention relates to the field of chemical engineering, and provides a method for improving the weather resistance of anatase titanium dioxide, which comprises the following steps: carrying out titanium coating treatment on an anatase titanium dioxide primary product by adopting a titanium-containing byproduct hydrochloric acid, sequentially carrying out silicon coating treatment and aluminum coating treatment on the titanium-coated anatase titanium dioxide primary product, and then washing, carrying out suction filtration, drying and carrying out jet milling to obtain the weather-resistant anatase titanium dioxide. The anatase titanium dioxide is obtained. According to the method, the titanium-containing byproduct hydrochloric acid is used as a coating agent, titanium coating, silicon coating and aluminum coating are sequentially carried out on the anatase titanium dioxide primary product step by step, then washing, suction filtration, drying and air jet pulverization are carried out, and the anatase titanium dioxide is obtained, so that the weather resistance of the anatase titanium dioxide is improved; the technical problems that in an existing film coating technology, film coating is not uniform, the binding force of a film coating layer is weak, and long-term weather resistance is affected are solved.

The invention provides titanium-doped iron phosphate and a preparation method and application thereof, and belongs to the technical field of battery materials.The preparation method of the titanium-doped iron phosphate comprises the steps that an iron source solution and titanium source slurry subjected to crystal transformation treatment are mixed to obtain first slurry; a phosphorus source solution and a pH regulator are sequentially added into the first slurry, and second slurry with the pH larger than 2 is obtained; filtering the second slurry to obtain a first filter cake, rinsing the first filter cake, and dispersing the first filter cake with a phosphoric acid solution to obtain a third slurry; after the third slurry is aged, the obtained aged slurry is filtered, washed, dried and sintered in sequence, and titanium-doped iron phosphate is obtained. The titanium source slurry subjected to crystal transformation treatment is introduced into an iron phosphate synthesis system, hydrated titanium dioxide in the sintered titanium source slurry is converted into anatase titanium dioxide, the anatase titanium dioxide and iron phosphate form an interstitial solid solution, and the prepared titanium-doped iron phosphate has a relatively high iron-phosphorus ratio, so that the capacity performance of a secondary battery is improved.

The invention relates to the field of titanium dioxide, and provides a preparation method of a titanium dioxide filler for improving the dielectric property of ceramic in order to solve the problem that the dielectric property of a product is not improved well when existing titanium dioxide is used as a functional filler of ceramic, the preparation method of the titanium dioxide filler for improving the dielectric property of the ceramic comprises the following steps: S100, under a heating condition, adding a doped ion solution into a precursor solution of titanium dioxide to obtain gel; the doped ion solution comprises Mo < 6 + > and Sn < 2 + >; the molar ratio of Mo < 6 + > to Ti < 4 + > is (10-30): (1-2), and the molar ratio of Sn < 2 + > to Ti < 4 + > is (10-20): (2-3); and S200, calcining the gel to obtain the titanium dioxide filler. The crystal form change of anatase type titanium dioxide in the early stage of sintering is utilized, so that the possibility of occurrence of ceramic microcracks is reduced; volume shrinkage is prevented from being intensified under the condition of high-temperature sintering, so that the possibility of structural defects of the ceramic is increased under the same process condition; the titanium dioxide prepared by a titanium dioxide doping process can promote the conversion of the titanium dioxide into rutile type titanium dioxide.

This invention discloses a Na2Ti7O 15 Na₂Ti₃O₇ sodium titanate electrode material, its preparation method, and its application. This electrode material is a porous, blocky structure composed of stacked nanorods. It is synthesized by a simple solid-state method, where sodium carbonate precursor and anatase titanium dioxide are ball-milled in a specific ratio and then microwave-sintered in air. 15 The addition of [a specific ingredient] increases the exposure of the (100) sodium storage crystal face in Na2Ti3O7 sodium titanate, while decreasing the exposure of the (003) crystal face; Na2Ti7O 15 The presence of four TiO6 octahedrons within a single structural unit increases the number of sodium storage sites and widens the sodium ion diffusion channels, thereby improving the material's specific capacity and rate performance. (Na2Ti7O) 15 The two layers of TiO6 octahedrons are interconnected, making the structure more stable during sodium ion insertion / extraction, thereby increasing the long-term cycling stability of the material.

The application discloses a printed two-dimensional code silicon carbide particle trap outer skin which cannot be diluted. On the basis of a conventional silicon carbide outer skin material, 5-10 parts by weight of calcined kaolin with whiteness of 90% or above and 1-5 parts by weight of anatase titanium dioxide are added. According to the design scheme, the compactness of the outer skin is improved, the water absorption is reduced, the code reading rate reaches 100%, and the added components do not affect the performance of the product.

The invention provides a novel anti-aging material for a high-altitude shock insulation support and a preparation method of the novel anti-aging material, and the novel anti-aging material is prepared from the following raw materials in percentage by mass: 85-90 wt% of silicon rubber, 1-2 wt% of nanoscale silicon dioxide, 3-5 wt% of micron-sized calcium carbonate, 0.5-1.5 wt% of anatase type titanium dioxide, 0.1-0.3 wt% of fluorosilicone modified nano aluminum oxide, 1-1.5 wt% of an oxide vulcanizing aid and 1-2 wt% of an anti-aging agent. Therefore, the prepared novel anti-aging material has excellent organic / inorganic pollutant adhesion and wear resistance in high-altitude strong ultraviolet, high sandstorm and extreme temperature change environments, the surface hydrophobicity effectively reduces moisture permeation and microcrack propagation, the thermo-oxidative aging resistance is synergistically improved through a stable cross-linked network and a composite anti-aging system, and the anti-aging performance of the material is greatly improved. And finally, excellent elasticity, good strength and stable shock insulation efficiency are realized, and the service life of the shock insulation support in a severe environment is prolonged.

The application discloses a kind of porous titanium doped biochar materials and its preparation process, belong to environmental functional adsorption material technical field.The forestry waste pine cone is used as raw material, and the base biochar is obtained by inert atmosphere carbonization, then the titanium source is uniformly loaded on the biochar skeleton, and the titanium modified biochar with stable structure and abundant active sites is prepared by subsection temperature control pyrolysis activation.The characterization results show that the obtained material has anatase titanium dioxide as active crystal phase, with developed microporous structure, high specific surface area and abundant Ti-O active sites, and strong negative surface charge.The preparation process has mild conditions and controllable process, the raw material source is wide, the cost is low, and the modification effect is stable, which provides technical support for the structure regulation and heavy metal pollution repair application of biomass-based functional carbon materials.

The application discloses a method for degrading potassium salt flotation collector octadecylamine / dodecyl morpholine by a photocatalytic oxidation method, and utilizes a material with a small compound band gap of anatase titanium dioxide to obtain a heterojunction material with a wide spectral response, so that green photocatalytic degradation treatment of octadecylamine and / or dodecyl morpholine is realized. The photocatalytic oxidation technology has the advantages of mild reaction conditions, fast reaction rate, environmental friendliness and the like, and can degrade organic matters into harmless CO2 and H2O to a certain extent. The method has the advantages of simple equipment, low cost, recyclable materials and easy industrialization.

The present application relates to the technical field of the preparation of titanium dioxide. Specifically disclosed are a high-brightness and high-whiteness anatase titanium dioxide pigment and a preparation method therefor. A high-brightness and high-whiteness anatase titanium dioxide pigment and a preparation method therefor. The preparation method comprises: adding titanyl sulfate to water at 60-65°C, heating the mixture to 95-97°C at a rate of 2.3-3.5°C / min for hydrolysis, adjusting the pH of the system to 2.2-2.4 during the hydrolysis process, then adding anatase seed crystals, and after the hydrolysis reaction is finished, filtering same to remove the filtrate, so as to obtain metatitanic acid; adding the metatitanic acid to water to undergo pulping dispersion, and adding a reducing agent during the pulping process; then performing acid pickling with sulfuric acid and drying to obtain a crude product; blending, grinding and screening the crude product and a modifier to obtain a modified crude product; and performing jet milling on the modified crude product and a metal salt to obtain the titanium dioxide pigment product. By means of the preparation method for a high-brightness and high-whiteness anatase titanium dioxide pigment of the present application, the product has higher whiteness, stability and tinting strength, and is more suitable for being used in a plastic system.

The invention discloses an anti-fouling PCR ABS laser etching material and a preparation method thereof, and relates to the technical field of PCR ABS material modification and laser etching function integration. The anti-pollution PCR ABS laser etching material has the advantages that the anti-pollution PCR ABS The invention discloses a PCR (Polymerase Chain Reaction) ABS (Acrylonitrile Butadiene Styrene) resin composition, which is prepared from the following raw materials in parts by weight: 50 to 90 parts of PCR ABS resin, 6 to 10 parts of modified organic silicon micro powder, 2 to 15 parts of modified ultra-high molecular weight polyethylene powder, 2 to 8 parts of azodicarbonamide, 2 to 6 parts of methyl methacrylate-butyl acrylate copolymer, 1 to 3 parts of antioxidant 1010, 0.5 to 2.5 parts of glass beads, 0.5 to 2 parts of anatase titanium dioxide, 0.2 to 1 part of silane coupling agent KH-550 and 0.5 to 1.0 part of calcium-zinc stabilizer. 0.1 to 0.5 part of carbon black, 0.05 to 0.1 part of polyethylene wax and 0.4 to 1 part of absolute ethyl alcohol. Aiming at core pain points of laser engraved keys of a computer keyboard, through optimization of synthetic resin, the problems that characters made of common materials are polluted by hand sweat, alcohol and the like and are blurred within 1-3 months are effectively solved; and the resin is adaptive to most keyboard key basic resins such as ABS, PC and the like, and the character definition and the service life of the product are both considered.

The application relates to the technical field of photocatalysts, in particular to an acid-modified M2Ti6O 13 / TiO2 nanobelt and a preparation method thereof, the method comprising the following steps: uniformly mixing anatase titanium dioxide, hydrogen peroxide and an alkaline solution to obtain a first mixed solution; after the first mixed solution is subjected to a hydrothermal reaction, a solid product is separated out; the solid product is washed to be neutral, and after drying treatment, calcination treatment is carried out in an inert gas atmosphere to obtain an HT-TiO2 sample; the HT-TiO2 sample is added into an acid solution containing a reducing organic acid to obtain a second mixed solution; after the second mixed solution is stirred and reacted at a preset temperature, the reaction product is washed and subjected to vacuum drying treatment to obtain an acid-modified M2Ti6O 13 / TiO2 nanobelt. The nanobelt prepared by the application has better carbon dioxide photocatalytic reduction effect and selectivity for products.

The application provides a method for removing pollutants in water by utilizing a local thermal effect to promote a Fenton-like reaction, and uses a ruthenium-doped titanium dioxide nanobelt (TNB-Ru) as a catalyst; the TNB-Ru is prepared by using commercial anatase titanium dioxide nanoparticles as raw materials, first, a hydroxylated titanium dioxide nanobelt is prepared by using an alkaline hydrothermal method, then the titanium dioxide nanobelt is dispersed in a ruthenium chloride ethanol solution, and the ruthenium is loaded on the titanium dioxide nanobelt by using the anchoring effect of the surface hydroxyl group, and finally the target material is obtained. The TNB-Ru prepared by the method has excellent catalytic degradation performance, which is mainly due to the fact that the ruthenium dispersed on the titanium dioxide nanobelt generates a local plasmonic resonance effect to form a local high-temperature environment under visible light irradiation, and the Fenton-like reaction is accelerated.

The invention discloses urea-coated titanium dioxide nanowire powder, a preparation method and application of the urea-coated titanium dioxide nanowire powder in a rigid-flexible matrix digital controllable intelligent material. The preparation method of the urea-coated titanium dioxide nanowire powder comprises the following steps: adding anatase type titanium dioxide nanowire powder into a saturated urea solution for ultrasonic treatment, and then carrying out heating treatment, standing and drying to obtain the urea-coated titanium dioxide nanowire powder. Compared with the prior art, wetting and dispersion of the urea-coated titanium dioxide nanowire powder in silicone oil are improved, agglomeration of the urea-coated titanium dioxide nanowire powder in an electric field is reduced, and interface resistance is improved to inhibit injection and micro-discharge, so that electric leakage is reduced, breakdown field strength is improved, response is faster, delay is smaller, and more stable electrorheological performance is kept under damp and hot and circulating conditions.

The invention relates to the technical field of catalysts, in particular to anatase-phase titanium dioxide with high catalytic activity and a preparation method of the anatase-phase titanium dioxide. The catalytic coefficient of the titanium-phase titanium dioxide is 0.2-0.4, and the catalytic coefficient refers to the peak area ratio of the 004 crystal face to the 101 crystal face in the anatase-phase titanium dioxide; the specific surface area of the anatase phase titanium dioxide is 200-300m < 2 > / g, and the 004 crystal face size is 15-35nm. The anatase-phase titanium dioxide has high photocatalytic efficiency, is still high in photocatalytic performance even if the anatase-phase titanium dioxide is used for more than 800 times, and has excellent adsorption efficiency.

The invention discloses an ABS (Acrylonitrile Butadiene Styrene) material which comprises the following components in parts by weight: 90-95 parts of ABS resin; 4 to 6 parts of anatase titanium dioxide; 0.5 to 1.5 parts of cesium tungstate nano particles; the average particle size of the cesium tungstate nano-particles ranges from 50 nm to 400 nm. The ABS material with high L value and low infrared reflection can be obtained by exploring the particle size of the cesium tungstate nanoparticles and adjusting the content of the anatase titanium dioxide and the cesium tungstate nanoparticles.

The present invention relates to the field of G03F7 technology, and more specifically, to a photosensitive coating for Mini LED panels and a preparation method thereof. The photosensitive coating for Mini LED panels, in parts by weight, comprises 10-30 parts of photosensitive reaction resin, 10-15 parts of photosensitive reaction monomer, 20-40 parts of inorganic aggregate, 10-30 parts of reaction accelerator, 1-15 parts of titanium dioxide, and 10-30 parts of diluent. The present application increases the chemical stability and weather resistance of the photosensitive coating by adopting a specific content of titanium dioxide; the present application adopts a specific trifunctional acrylic monomer and monoclinic talc to promote each other, thereby solving the phenomenon of film embrittlement caused by anatase titanium dioxide; in addition, the photosensitive coating for Mini LED panels obtained in the present application has excellent flexibility, solder resistance, and bending resistance.

The present invention discloses a method for preparing high-resistivity chemical fiber titanium dioxide, comprising the following steps: subjecting anatase titanium dioxide to a heat treatment at 120-130°C for 10-20 minutes, then cooling to 40-45°C at a rate of 1-3°C / min, maintaining the temperature, adding a regulating modifier in an amount of 10-15% of the total amount of anatase titanium dioxide, stirring for reaction, completing the stirring, washing with water, and drying. The regulating modifier prepared by the present invention can moisten the titanium dioxide, and through interface modification with a silane coupling agent KH560, optimizes the combination of a lanthanum nitrate solution, sodium lignin sulfonate, and a phosphate buffer solution to enhance the activity of the system. Through the coordinated coordination between the raw materials, the activity of the titanium dioxide can be further improved, providing favorable basic conditions for subsequent heat homogenization treatment and ball milling treatment with a silica-polyphonic boron nitride nanosheet modifier.

The invention belongs to the technical field of catalyst materials, and particularly relates to an S-doped ReSe2 photocatalytic hydrogen evolution cocatalyst and a preparation method and application thereof.The preparation method comprises the steps that anatase-phase titanium dioxide is added into a mixed solution of ethyl alcohol and water, ultrasonic dispersion is conducted, then a sodium perrhenate aqueous solution, a sulfur source and a selenium source are added, air in a system of obtained suspension liquid is emptied through pure N2, and the S-doped ReSe2 photocatalytic hydrogen evolution cocatalyst is obtained; the method comprises the following steps: dissolving TiO2 in a solvent, then sealing, depositing the ReSxSe2-x hydrogen evolution cocatalyst on TiO2 by adopting a photodeposition method, and centrifuging, washing and drying the obtained product to obtain the catalyst TiO2 / ReSxSe2-x, 0lt, xlt; 2. The photocatalyst provided by the invention has more hydrogen evolution active sites and lower photon-generated carrier recombination rate, so that the photocatalyst shows higher visible light catalytic decomposition water hydrogen production activity.

This invention discloses a catalyst support, a preparation method, and a catalyst for preparing chlorine gas. The catalyst preparation materials include a catalyst support and an aqueous solution of ruthenium trichloride. The catalyst support is rutile titanium dioxide containing oxygen vacancies, which is prepared by subjecting anatase titanium dioxide to high-temperature ultraviolet treatment in an inert atmosphere. The preparation method for the catalyst involves impregnating the ruthenium trichloride aqueous solution onto the oxygen-vacancy-containing rutile titanium dioxide using an equal-volume impregnation method, drying at 80–120°C for 6–24 hours, and then heating at 250–350°C in an oxygen or air atmosphere for 6–16 hours. This catalyst overcomes the shortcomings of existing technologies, exhibiting a high reaction rate at a relatively low reaction temperature (300°C), and achieving a hydrogen chloride conversion rate close to the hydrogen chloride equilibrium conversion rate.

This invention discloses a high-temperature denitrification catalyst for use in waste incinerators and its preparation process, relating to the field of catalyst technology. The catalyst uses anatase titanium dioxide as a support, vanadium pentoxide and tungsten oxide as active ingredients, and nickel powder is added to form a mixture that impregnates the support before calcination. This invention adds a large amount of nickel powder to the original catalyst for mixing, so that the high-temperature conditions provided by the catalyst in the waste incinerator drive the reaction of nickel and oxides with water vapor, reducing the presence of water in the catalyst environment, thereby improving the reaction of SO2 and NH3, increasing the conversion rate of NO, and improving the catalyst's conversion performance.

The application discloses a composite titanium dioxide interface bonding sterilizing agent and a preparation method thereof, and belongs to the technical field of inorganic antibacterial materials. The sterilizing agent is in-situ compounded by anatase titanium dioxide, cerium bromide and silver iodide, and the molar amount of the cerium bromide is 0.02-0.08 and the molar amount of the silver iodide is 0.04-0.20, with the molar number of the titanium dioxide being 1. The components are compounded through crystal face matching, chemical bond matching and energy band gradient matching to form a continuous interface bonding structure of Ti-O-Ce-Br-Ag-I and constitute a ternary coherent heterojunction. The application realizes efficient cooperation through crystal face matching, chemical bond matching and energy band gradient matching, generates high-activity oxygen species under visible light to realize rapid sterilization, realizes long-acting bacteriostasis through controllable release of Ag+ and I-, and improves the stability of the system by means of Ce3+ / Ce4+ circulation. The preparation adopts a low-temperature alcohol heating process, is suitable for industrial production, and has the advantages of mild conditions, no calcination and the like. The obtained sterilizing agent has the advantages of fast sterilization, long bacteriostasis period, high stability, non-toxicity, environmental protection and the like, and can be applied to the fields of medical disinfection, water treatment, air purification and antibacterial coating and the like.

The application belongs to the technical field of nano ceramic powder preparation, discloses a calcium-doped barium titanate powder and a preparation method and application thereof, and aims to solve the technical problems of needing a mineralizer in the preparation process of the calcium-doped barium titanate powder, large particle size of the prepared powder, uneven element doping, poor dispersibility and low tetragonal phase content. The steps are as follows: (1) preparing a barium salt solution containing a calcium source; (2) taking anatase titanium dioxide obtained by calcining titanium nanotubes as a titanium source, and adding the titanium source into the barium salt solution containing the calcium source to obtain a calcium-doped barium titanate precursor solution; (3) performing hydrothermal reaction on the precursor solution; (4) performing filtration, washing, drying and grinding to obtain the calcium-doped barium titanate powder. The calcium-doped barium titanate powder prepared by the application has the characteristics of small particle size, narrow distribution, good dispersibility and high tetragonal phase content. Meanwhile, the reaction can avoid using a large amount of mineralizer, the method has low cost, good safety, simple process, can realize large-scale production of the powder, and meets the development requirements of subsequent high-temperature, thin-layer multi-layer ceramic capacitor products.

The present invention is based on Na2Ti7O 15 This paper describes a doped sodium titanate electrode material, its preparation and use. The electrode material has a porous block structure stacked with nanorods and is synthesized by a simple solid-state method using proportional ball milling of precursors sodium carbonate and anatase titanium dioxide followed by microwave sintering in air. The resulting Na2Ti7O 15 The addition of Na increases the exposure of the (100) sodium storage crystal plane of Na2Ti3O7 sodium titanate and decreases the exposure of the (003) crystal plane, resulting in Na2Ti7O 15 has four TiO6 octahedra in one structural unit, providing more sodium storage sites and wider sodium ion diffusion channels, improving the specific capacity and rate performance of the material. 15 The TiO6 octahedra in the upper and lower layers are connected to each other, making the structure more stable during the sodium ion insertion / extraction process, thereby improving the long-term cycling stability of the material.

The invention discloses a ternary nano composite material and a preparation method and application thereof, and the preparation method of the ternary nano composite material comprises the following steps: S1, preparing a titanium mesh distributed with anatase type titanium dioxide nanotubes; and S2, mixing and grinding melamine and titanium carbide, and carrying out chemical vapor deposition on the obtained mixture on a titanium mesh on which the anatase type titanium dioxide nanotubes are distributed, so as to obtain the ternary nano composite material with a three-dimensional network structure. The composite material is excellent in photocatalytic performance, high in chemical stability, environment-friendly, simple in preparation method, low in cost, capable of being applied to catalytic degradation of water bodies containing organic pollutants, high in degradation efficiency, capable of being repeatedly utilized and free of secondary pollution.

The invention discloses a preparation method of a titanium dioxide and high-entropy alloy composite material for an ion battery, and belongs to the technical field of preparation of battery materials and nano composite materials. The method comprises the following steps: uniformly mixing titanium dioxide nanoparticles and a high-entropy alloy precursor; in an inert atmosphere, placing the composite precursor and metal sodium in a sealed environment together, heating to a preset temperature, carrying out a reduction reaction, and carrying out heat preservation at the temperature for a period of time; and removing residual metal sodium from the obtained product in an inert atmosphere, and cleaning and drying the final product. The composite materials with different chemical components can be prepared by controlling the types and contents of metal elements in the high-entropy alloy precursor. In the prepared composite material, the high-entropy alloy nanoparticles are uniformly loaded on the surfaces of the anatase-phase titanium dioxide nanoparticles, so that the conductivity and the ion diffusion rate of the material are effectively improved, and the composite material shows excellent electrochemical performance when being applied to negative electrodes of lithium-ion and sodium-ion batteries.