37 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 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.

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 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 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.

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 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.

The invention relates to the technical field of solid-state battery electrolytes, in particular to a high-performance PVDF solid electrolyte and a battery, the high-performance PVDF solid electrolyte comprises a PVDF-based polymer and a TiO2-SiOx inorganic composite filler, mesocrystal anatase TiO2 provides an ordered ion channel, and amorphous SiOx inhibits interface side reaction. A bi-component inorganic composite filler composed of mesogenic structure anatase type titanium dioxide and amorphous SiOx is designed and uniformly dispersed in a polyvinylidene fluoride polymer matrix to form an inorganic-organic composite structure with a synergistic enhancement effect, so that high mechanical strength and good processability are maintained, and the performance of the composite material is improved. And the ion transmission efficiency and the electrode / electrolyte interface compatibility are synchronously improved.

The present application relates to a kind of by phenol alkylation reaction preparation alkyl phenol method.The method uses anatase titanium dioxide as catalyst, phenol as reaction substrate, alcohol as alkylating agent, under nitrogen atmosphere, phenol alkylated product is obtained in one-step process.The reaction process is as follows:phenol, alcohol and solvent are mixed with catalyst, then put into pressure vessel, seal, and fill in protective gas, reaction temperature is higher than 280 DEG C, reaction time is longer than 4 hours, phenol is reacted into ortho α-C alkylated product.The method has simple reaction process, can be synthesized with high selectivity ortho straight-chain alkyl phenol product, catalyst is stable, easy to separate from reaction system and can be repeatedly used, with good industrial application prospect.

The invention provides titanium dioxide for chinlon chemical fibers and a preparation method of the titanium dioxide, and relates to the field of high-performance fibers and composite materials. The titanium dioxide for the chinlon chemical fiber comprises a titanium dioxide inner core, a silicon dioxide inner coating layer, an aluminum oxide middle coating layer and a manganese dioxide outer coating layer, the raw material of the titanium dioxide core is anatase titanium dioxide; the raw material of the silicon dioxide inner coating layer is sodium silicate; the raw material of the aluminum oxide intermediate coating layer is sodium metaaluminate; the manganese dioxide outer coating layer is prepared from the following raw materials: manganese sulfate, sodium polyphosphate and sodium hydroxide; in parts by weight, the content of the anatase titanium dioxide is 90 to 100 parts; the content of the sodium silicate is 0.0005 to 0.002 part; the content of the sodium metaaluminate is 0.008 to 0.01 part; according to the titanium dioxide for the chinlon chemical fiber, the anti-aging performance of the titanium dioxide can be improved, water molecule permeation is blocked, and synergistic enhancement of light corrosion resistance and damp-heat aging resistance is achieved.

The invention discloses an anti-adhesion hydrophilic coating as well as a preparation method and application thereof. The anti-adhesion hydrophilic coating comprises a first coating composition for forming a bottom layer and a second coating composition for forming a top layer, the first coating composition is prepared from the following components in parts by weight: 1 to 5 parts of anatase type titanium dioxide, 0.01 to 0.1 part of 2-hydroxy-4-methoxybenzophenone, 10 to 20 parts of polyurethane, 0.5 to 3 parts of isophorone diisocyanate, 0.1 to 0.5 part of gamma-methacryloxypropyl trimethoxy silane and 150 to 300 parts of butanone; the second coating composition is prepared from the following components in parts by weight: 5 to 15 parts of polysulfobetaine methacrylate, 0.5 to 3 parts of polyethylene glycol and 100 to 200 parts of absolute ethyl alcohol.

The invention discloses a titanium lithium ion sieve and a preparation method thereof, and relates to the technical field of lithium ion adsorption. The method comprises the following steps: uniformly mixing a lithium source, anatase titanium dioxide, a tungsten source and carbon quantum dots, presintering at 290-350 DEG C for 50-80 minutes, heating to 550-750 DEG C, continuously calcining for 1.5-3 hours, and naturally cooling to obtain a precursor; and taking the precursor, eluting in a sodium thiosulfate aqueous solution, and drying the eluted solid phase to obtain the product. The titanium-based lithium ion sieve disclosed by the invention has relatively high adsorption rate and adsorption capacity and relatively low titanium solution loss, adsorption equilibrium can be achieved within 6 hours, the highest adsorption capacity can reach 40.06 mg / g, and the titanium solution loss is 0.52%.

A composition for coating an overhead conductor is disclosed comprising: (i) a reflective agent; (ii) a photocatalytic agent comprising ≥70 wt % anatase titanium dioxide (TiO2) having an average particle size (“aps”)≤100 nm; (iii) a polyorganosiloxane binder; and (iv) a superhydrophobic agent comprising either: surface functionalised silica nanoparticles, a functional polysiloxane or a polymethylsilsesquioxane.

This invention discloses an optical cleaning agent and its preparation method, belonging to the technical field of optical lens care and photocatalytic functional surface maintenance. The cleaning agent uses water, ethanol, and propylene glycol as base solvents and contains alkyl glycosides, 5-15nm anatase titanium dioxide, a suspending stabilizer, and a pH buffer adjuster, with the system pH controlled at 6.5-7.2. Three series of products are formed by combining antibacterial and oleophobic components. This invention effectively cleans stains on the surfaces of optical lenses and frames, is compatible with various coatings and materials, and does not damage the surface. It is also compatible with the applicant's prior patent applications (application numbers 202610499257.9 for photocatalytic lamps and 202610515950.0 for photocatalytic glasses), removing surface contaminants, keeping photocatalytic active sites exposed, and preventing functional degradation. The system of this invention is stable and the process is simple, making it suitable for cleaning and maintaining optical surfaces and photocatalytic functional products.

The invention provides a preparation method and application of anatase conductive titanium dioxide, and relates to the technical field of titanium dioxide production. The preparation method comprises the following steps: S1, adding deionized water into an anatase titanium dioxide base material, and stirring to form a white suspension; adding a dispersing agent and a precipitating agent into the white suspension, and carrying out ultrasonic treatment to obtain a titanium dioxide suspension; s2, dropwise adding an ethanol solution of tin chloride and antimony chloride into the titanium dioxide suspension to form an adsorption layer on the surface of titanium dioxide, then adjusting the pH value to 1.5-2.5, then transferring into a reaction kettle, reacting at 180 DEG C for 4 hours, and after the reaction is finished, carrying out suction filtration and drying to obtain anatase conductive titanium dioxide; according to the preparation method provided by the invention, anatase titanium dioxide is subjected to coating modification through a hydrothermal method, high-temperature treatment is not needed, the resistivity of the obtained titanium dioxide is about 22 omega.cm, the chromatic value is about 90.25, the average particle size is about 0.258 mu m, the particle size is uniform, the titanium dioxide is easily dispersed in various media, the high-temperature heat resistance is good, and meanwhile, the requirements of light-color appearance, low hardness and good dispersity are met; and the material has the characteristics of excellent conductivity and good stability at high temperature, and can be widely applied to chemical fiber products.

This invention discloses a pigment for scalp micropigmentation and its packaging bottle, relating to the field of cosmetic packaging technology. The pigment comprises a base carrier, a biomimetic coloring system, a stabilizing and bioactive system, additives, and water. It utilizes a compound coloring process of nano-plant carbon black, γ-iron oxide, and anatase titanium dioxide microspheres, combined with components such as pterostilbene, sodium hyaluronate, and ceramide NP, to achieve three-dimensional biomimicry, high stability, low irritation, and minimal smudging. The accompanying packaging bottle features a narrow medical-grade PETG bottle body, a bottom material-gathering cone, a hydrophobic inner wall, a one-way valve, and a controlled-discharge nozzle, with a residual rate ≤2%, aseptic sealing, and precise dispensing. This invention provides natural coloring, good compatibility, and high utilization, making it suitable for clinical and commercial promotion of scalp micropigmentation.

The invention relates to the technical field of catalyst preparation, and particularly discloses a preparation method and application of a methane selective oxidation noble metal modified catalyst. The method comprises the following steps: (1) preparing an anatase titanium dioxide suspension; (2) preparing urea and titanium dioxide mixed turbid liquid; (3) preparing an Au-loaded urea and titanium dioxide compound; and (4) preparing the nitrogen-doped titanium dioxide supported Au catalyst. Compared with the existing noble metal catalyst, the prepared nitrogen-doped titanium dioxide supported Au catalyst for catalyzing methane to prepare methanol has high methane conversion catalysis activity and good stability; raw materials are cheap, the process is simple, the reaction is mild, and the whole process is pollution-free; while the catalytic activity of the noble metal is improved, the product cost is reduced, and a new thought for preparing the methane oxidation reaction catalyst is expanded.

The invention provides a lithium-rich manganese-based positive electrode material, a preparation method thereof and a lithium ion battery. The lithium-rich manganese-based positive electrode material comprises a lithium-rich manganese-based core and a coating layer coating the surface of the lithium-rich manganese-based core, the lithium-rich manganese-based core comprises a lithium-rich manganese-based material as well as trivalent aluminum ions and pentavalent niobium ions doped in a bulk phase of the lithium-rich manganese-based material; the coating layer comprises an anatase type titanium dioxide material. According to the invention, the bulk phase doping of aluminum and niobium in the core is cooperated with the coating of the anatase type titanium dioxide material, so that the comprehensive regulation and control from the bulk phase structure to the interface reaction are realized, and finally the purpose of triple improvement of high first discharge specific capacity, high cycle retention rate and high structural stability is achieved; and a core technical solution is provided for commercial application of the lithium-rich manganese-based positive electrode material.

The disclosed method for manufacturing barium titanate particles includes: step (i), preparing titanium hydroxide by simultaneously neutralizing an aqueous solution of titanium halide and an alkaline substance under specified conditions; step (ii), preparing a slurry of the aforementioned titanium hydroxide; step (iii), preparing a titanium compound by adding specified amounts of inorganic acid and organic acid to the aforementioned slurry and maintaining the slurry at a temperature in the range of 40–90°C; and step (iv), synthesizing barium titanate particles by hydrothermal synthesis using raw materials containing the aforementioned titanium compound. The titanium compound contains amorphous titanium hydroxide and anatase titanium dioxide. The specific surface area of ​​the titanium compound is 250 m² / s. 2 / g or more.

The present application relates to a preparation method of magnetic inorganic molecular imprinting photocatalytic material and its application. The preparation method comprises: preparing ferroferric oxide microspheres as the inner core of the inorganic molecular imprinting photocatalytic material; coating an amorphous titanium dioxide matrix molecular imprinting shell layer on the surface of the inner core, and adding a template molecule in the process to obtain an inorganic molecular imprinting photocatalytic material with a template molecule; converting the amorphous titanium dioxide in the inorganic molecular imprinting photocatalytic material with the template molecule into porous anatase titanium dioxide, in-situ synthesizing silver nanoparticles on the surface of the porous anatase titanium dioxide, removing the template molecule under ultraviolet light irradiation, and thus obtaining a magnetic inorganic molecular imprinting photocatalytic material with a core-shell structure. The magnetic inorganic molecular imprinting photocatalytic material prepared by the present application has good selective adsorption and photocatalytic capacity, high stability and green environmental protection advantages, and has potential application value in selectively removing target pollution molecules in wastewater.

The application belongs to the technical field of photocatalysis, and provides a silver-palladium quantum dot anchored defect titanium dioxide nanometer array composite photocatalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: anodizing a titanium sheet cathode and a titanium mesh anode in a fluorine-containing ethylene glycol solution to obtain an amorphous titanium dioxide nanometer array, annealing to obtain an anatase titanium dioxide nanometer array, cathodically reducing the titanium sheet anode and the anatase titanium dioxide nanometer array cathode in a formic acid solution to obtain a defect titanium dioxide nanometer array, and placing the defect titanium dioxide nanometer array in a Pd-Ag mixed solution, and adding a sodium borohydride solution dropwise to perform reaction. The composite photocatalyst with dual functions of degrading organic pollutants and killing microorganisms is prepared by adopting the secondary anodization + cathodic reduction + chemical reduction method, the degradation efficiency of the composite photocatalyst on tetracycline hydrochloride and ciprofloxacin is more than 5 times that of titanium dioxide, and the composite photocatalyst can completely inactivate escherichia coli and significantly inhibit staphylococcus albus.