257 results about "Anatase" patented technology

The invention belongs to the field of functional textile materials, and provides a cool-feeling anti-ultraviolet nylon fabric and a preparation method thereof, and the cool-feeling anti-ultraviolet nylon fabric adopts a design scheme of combining a boron nitride / titanium dioxide composite filler with a beta-hydroxyl ether type ultraviolet absorption silane coupling agent surface modification technology. Uniform loading of hexagonal boron nitride on the surface of anatase type titanium dioxide is realized through an in-situ heat treatment process, a composite structure with heat conduction and ultraviolet shielding functions is constructed, and a complete process flow of master batch preparation, melt spinning, weaving, after-treatment and the like is matched; the ultraviolet protection coefficient UPF of the fabric is not lower than 40, the UPF retention rate after 20 times of household washing cycles is not lower than 80%, and the cool feeling qmax at the contact moment is not lower than 0.20 W / cm, the technical problem that an existing nylon fabric is insufficient in ultraviolet resistance and cool feeling function is solved, and the fabric has wide industrial application value.

The invention discloses a catalyst capable of resisting multiple impurity elements and resisting poisoning CO oxidation as well as a preparation method and application of the catalyst. The catalyst is composed of a TiO2 carrier, and active component elements and auxiliary elements which are loaded on the surface of the TiO2 carrier, the active component element is selected from at least one of Pt, Pd and Ru; the additive element is selected from at least one of Sn, V, Mo, Nb, Zr, Cr and Mn; in the catalyst, the mass content of the active component element is 1-20 wt%, and the mass content of the auxiliary element is 0.05-1.5 wt%; the crystal form of the TiO2 carrier is selected from at least one of anatase and rutile; the elements of the active component exist in the form of high-valence high-dispersion single atoms, clusters or nano-particles; the additive element exists in the form of oxide.

The invention relates to the technical field of mineral exploration, and discloses a method for estimating the mineralization probability of residual slope product type anatase based on multi-source parameters, and the method comprises the steps: determining a geographic region, collecting geological data, sampling a geological sample, and collecting the characteristics of the sample; extracting the first characteristic index set to judge the region classification of the geographic region, wherein the region classification comprises a conventional exploration region, a main mineralization mode region and a secondary mineralization mode region; extracting a second characteristic index set from the geological data to calculate a standard mineralization probability; calculating a weathering correction coefficient and a maturity correction coefficient; and correcting the standard mineralization probability to generate a mineralization probability, and judging whether the geographic region is a high-potential target region or not according to the mineralization probability. According to the technical scheme, the metallogenic probability judgment standard can be determined and corrected under different conditions, and judgment of a high-potential target region is achieved.

An engineered adsorbent for the selective extraction of lithium from brine solutions. Mixed metal oxides are introduced into the crystal lattice of anatase titania precursor. The invention offers significant advantages, including high adsorption capacity of the ion sieve, enhanced chemical stability of the sorbent, and higher Lithium selectivity.

The invention discloses a composite film based on light-biological synergistic gradient degradation and a preparation method thereof, the composite film sequentially comprises a light response layer, a transition layer and a biological response layer from outside to inside, and the light response layer comprises a polycaprolactone matrix, a tetraphenylporphyrin iron photosensitizer and anatase type TiO2 nanorods; the transition layer is a gradient blend of polylactic acid and modified starch; the biological response layer comprises polyhydroxyalkanoate and bacterial cellulose nanofibers; through the design of the three-layer gradient structure and the construction of the bionic microchannel, the synergistic effect of light degradation, hydrolysis and biodegradation is realized; the composite membrane has excellent mechanical properties and environmental adaptability, the degradation period can be accurately regulated and controlled within 30-180 days, and the soil degradation rate within 60 days reaches 91% or above; the preparation method comprises the processes of electrostatic spinning, gradient co-extrusion and bacterial cellulose in-situ culture. The material can be widely applied to the fields of agricultural mulching films, food packaging and the like, and the problems that a traditional degradable film is poor in mechanical property and uncontrollable in degradation are solved.

The invention discloses a high-sulfur-tolerance SCR honeycomb denitration catalyst and a preparation method thereof, and belongs to the technical field of industrial catalysts.The preparation method comprises the steps that S1, anatase type TiO2 and NH4HCO3 are mixed for pulping, pre-drying and calcination are conducted after extrusion forming, and a green body is formed; s2, carrying out nitric acid treatment on the green body, dipping the green body in a mixed solution of copper nitrate hydrate and cerium nitrate hydrate, and carrying out vacuum dipping, microwave drying and two-stage calcination to obtain a desulfurization carrier; s3, depositing an ammonium metatungstate precursor on the surface of the desulfurization carrier through CVD, and calcining to form a WO3 transition layer; and S4, dipping the transition layer in an acid solution containing NH4VO3 and ammonium metatungstate, and calcining after ultrasonic treatment to obtain a finished product. According to the method, the pore structure of the carrier is optimized through chambering treatment, and the stability and denitration efficiency of the catalyst in high-sulfur flue gas are remarkably improved by combining a multistage sulfur-resistant mechanism that the desulfurization layer preferentially captures SO2, the WO3 transition layer obstructs sulfur penetration and the denitration layer is protected by active sites.

An engineered adsorbent for the selective extraction of lithium from brine solutions. Mixed metal oxides are introduced into the crystal lattice of anatase titania precursor. The invention offers significant advantages, including high adsorption capacity of the ion sieve, enhanced chemical stability of the sorbent, and higher Lithium selectivity.

The invention relates to the technical field of ink, and particularly provides self-cleaning ink and a preparation method thereof, an atomic layer deposition process is adopted to construct a double-shell structure on the surface of anatase TiO2, the inner layer is a 2-5nm SiO2 compact isolation layer, the outer layer is photoresponse polyurethane, and dynamic coating is formed through 365nm ultraviolet light curing. The formula of the ink comprises urethane acrylate, a diluent, a photoinitiator, double-shell TiO2 and an auxiliary agent. Through the synergistic effect of energy band regulation and control, dynamic coating and free radical capture, the self-cleaning coating has the characteristics of efficient self-cleaning, long-acting weather resistance and environmental protection.

The invention discloses a high-temperature denitration catalyst used based on a garbage incinerator and a preparation process thereof, and relates to the technical field of catalysts, the high-temperature denitration catalyst comprises a catalyst, the catalyst takes anatase type titanium dioxide as a carrier and vanadium pentoxide and tungsten oxide as active components, nickel powder is added to prepare a mixed solution, and the mixed solution is used for dipping, calcining and forming the carrier. A large amount of nickel powder is added into an original catalyst for mixing, so that when the catalyst is in a garbage incinerator, the provided high-temperature condition drives nickel and oxides to react with water vapor, the existence of water in a catalyst environment is reduced, the reaction of SO2 and NH3 is improved, the conversion rate of NO is increased, and the conversion performance of the catalyst is improved.

The invention discloses a method for preparing an electromagnetic wave absorbing ceramic coating on a titanium alloy surface. The method comprises the following steps that (1) titanium alloy pretreatment is conducted, specifically, grinding and polishing and ultrasonic oil removal are conducted; 2) preparing a micro-arc oxidation solution; and 3) performing micro-arc oxidation treatment by controlling electrical parameters. The method is simple and controllable in process, easy to implement and suitable for large-scale industrial application. The prepared coating has wave absorbing performance, good corrosion resistance and high hardness, and the main components of the coating comprise titanium dioxide (rutile phase and anatase phase) and aluminum titanate. And high bonding strength and structural stability are achieved between the coating and the base body, and the corrosion resistance of the titanium alloy is remarkably improved.

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 bimorph TiO2 composite carbon material which is prepared by the following steps: by taking Ti3AlC2 as a raw material, preparing single-layer Ti3C2Ox through HF etching, compounding the single-layer Ti3C2Ox with a titanium-based metal organic framework MIL-125 through a hydrothermal reaction, and finally, oxidizing and then carbonizing to obtain the bimorph TiO2 composite carbon material, namely TiO2 / C-TiO2 for short. The basic microstructure of TiO2 / C-TiO2 is in the shape of a round cake, and the size of a single round cake is 0.5-1 [mu] m; and rutile type TiO2 and anatase type TiO2 exist in the TiO2 / C-TiO2 at the same time. The preparation method comprises the following steps: 1, preparing single-layer Ti3C2Ox; 2, preparation of Ti < 3 > C < 2 > O < x > / MIL-125; and 3, the preparation of TiO2 / C-TiO2 is carried out. When the positive electrode material is used as a lithium-sulfur battery positive electrode material, the initial discharge specific capacity is 1200-1300mA h g <-1 > under the condition that the current density is 0.2 C; and under the condition that the current density is 0.2 C, after 200 times of charge-discharge cycles, the residual specific capacity is 700-800 mA h g <-1 >, and the capacity retention ratio is 55-60%.

The invention relates to the field of catalytic materials, and provides a metal oxide composite material for preparing ethane through photocatalytic methane conversion and a preparation method of the metal oxide composite material. The material is a ternary composite functional material with a multi-stage structure and multi-scale characteristics, and comprises a micron-scale porous alumina carrier skeleton which is prepared by a freeze drying method and has directional through columnar pore channels, CeO2 nanorods which grow in the pore channels in situ, and an anatase type TiO2 shell layer which coats the surfaces of the CeO2 nanorods. The composite material forms a CeO2-TiO2 core-shell structure and a TiO2 thin layer on the inner wall of a pore channel, and has excellent photocatalytic activity and thermal shock resistance. The activity attenuation rate does not exceed 10% after irradiation of a light source with the wavelength of 365 nm and 20 times of thermal cycles at the temperature of 25-800 DEG C. The preparation method comprises the steps of freeze-drying forming and heat treatment of an aluminum oxide framework, in-situ hydrothermal synthesis of CeO2 nanorods and hydrolytic deposition and calcination of a TiO2 shell layer, the process is simple and convenient, the repeatability is high, and the method is suitable for efficient and stable photocatalysis application.

The invention relates to the field of waste treatment, in particular to a titanium dioxide nanotube as well as a preparation method and application thereof. The nanotube is in an anatase crystal form, the tube diameter is 10 nm to 10 [mu] m, the specific surface area is 39.81-151.77 cm < 2 > / g, and the titanium dioxide nanotube has a mesoporous and microporous structure. The catalyst can be used as a catalyst for photo-thermal synergistic catalytic degradation of a refrigerant, has high reaction activity in photo-thermal synergistic catalytic degradation of the refrigerant, and realizes effective degradation with low temperature, low energy consumption, large flow, high speed and high refrigerant component proportion.

The preparation method comprises the following steps: adding a manganese-containing precursor solution into anatase type titanium dioxide, stirring, standing, uniformly infiltrating, and carrying out image monitoring and state analysis on the infiltration state of the solution by adopting an intelligent industrial control technology based on deep learning. According to the method, the solution local texture features are extracted to extract infiltration state information based on the solution local texture features, then feature dominant enhancement and uniformity scoring are carried out on the texture features of all local areas of the image, the overall infiltration uniformity of the solution is revealed in combination with a mathematical statistical method, and therefore reasonable control over the infiltration degree and infiltration time is facilitated. In this way, it can be ensured that nano-manganese dioxide is evenly distributed on the catalyst carrier, the infiltration time is effectively controlled, and therefore the preparation efficiency and quality stability of the catalyst are improved.

A Na2Ti7O15 doped Na2Ti3O7 sodium titanate electrode material, and a preparation method therefor and a use thereof. The electrode material has a porous block structure formed by stacking nanorods. The electrode material is synthesized by a simple solid-phase method, and is obtained by carrying out ball milling on precursors sodium carbonate and anatase-phase titanium dioxide in proportion, and then carrying out microwave sintering in air; the addition of Na2Ti7O15 increases the exposure of (100) sodium storage crystal face and decreases the exposure of (003) crystal face of Na2Ti3O7 sodium titanate; and Na2Ti7O15 has four TiO6 octahedrons in one structural unit, and has more sodium storage sites and wider sodium-ion diffusion channels, thereby improving the specific capacity and rate performance of the material. Upper and lower layers of TiO6 octahedrons in Na2Ti7O15 are connected to each other, such that the structure is more stable in a sodium-ion intercalation / deintercalation process, thereby improving the long cycle stability of the material.

Titanium dioxide (TiO2) forms the basis of devices for applications including sensing devices, solar cells, photo-electrochromics, and photocatalysis. Such devices exploit different phases of TiO2 within such devices and accordingly it would be beneficial to have an amorphous TiO2 precursor which allows crystalline phase spatial patterning, for the crystallization of the amorphous TiO2 precursor to be triggered at low energies, and with the crystalline phase controllable at room-temperature without necessitating complex handling whilst providing TiO2 phases that are stable over a prolonged period of time. Accordingly, there are provided processes for providing a TiO2 precursor and controlling the conversion of the TiO2 precursor from amorphous-to-anatase, amorphous-to-rutile, amorphous-to-mixture of anatase / rutile or from amorphous-to-anatase-to-rutile in a simple and efficient manner.

The present disclosure relates to a hierarchical porous titanosilicate molecular sieve containing framework titanium and anatase and a preparation method and application thereof. The titanosilicate molecular sieve has Ti 2p 3 / 2 XPS characteristics: the titanosilicate molecular sieve has spectral peaks at binding energy N1 and N2 positions; wherein the N1 is 459.2±0.2ev, the spectral peak peak area of the titanosilicate molecular sieve at the binding energy N1 position is recorded as A1; the N2 is 460.5±0.5ev, the spectral peak peak area of the titanosilicate molecular sieve at the binding energy N2 position is recorded as A2; X1 defined as below formula (1) is any value between 0.8-2.2ev: X1=N2-N1 formula (1); X2 defined as below formula (2) is any value between 0.1-0.8: X2=A2 / A1 formula (2). The present disclosure can exert the synergistic effect of framework titanium and anatase, can effectively improve the conversion rate of cyclohexanone oxime and the selectivity of caprolactam in the gas phase Beckmann rearrangement reaction of cyclohexanone oxime, and prolong the catalyst life.

The present disclosure belongs to the technical field of material synthesis and utilization of renewable clean energy, and provides a red titanium dioxide heterojunction, and a preparation method therefor and the use thereof. The preparation method for a red titanium dioxide heterojunction comprises: forming a first precursor of B-doped titanium dioxide; calcining the first precursor at a high temperature to obtain a second precursor of a B-doped titanium dioxide heterojunction; and mixing any one of (NH4)2TiF6, NH4TiOF3 and (NH4)2TiOF4 with the second precursor, followed by a nitridation treatment in an ammonia gas flow to obtain a red titanium dioxide heterojunction uniformly doped with a rutile phase and an anatase phase. In the present disclosure, titanium dioxide in a rutile phase can be nitrided by means of an ammonium fluotitanate treatment, such that a red titanium dioxide heterojunction uniformly doped with both a rutile phase and an anatase phase is formed, which heterojunction exhibits relatively high water oxidation activity in a photocatalytic water decomposition reaction.

Provided is a titanium oxide powder, wherein the A / BET specific surface area is 2.3×10-5[ms-1 / (m2 / g)] or higher when calculated from the BET specific surface area and the inverse A of the spin-spin relaxation response time T2 measured by performing pulsed NMR on a liquid mixture in which the BET specific surface area measured via the nitrogen adsorption method is at least 80m2 / g and less than 300m2 / g, the anatase content of the crystal phase measured by the powder X-ray diffraction (XRD) method is 90% or more, and the titanium oxide content prepared using ion-exchanged water is 10 mass%.

A glass article comprising a photocatalytic coating including a titanium nitride layer and an outer titanium oxide layer, preferably at least partially in anatase form, said article being configured to impart a blue colour in transmission to a multiple glazing unit in which it constitutes the outer face, said multiple glazing unit further comprising a low-emissivity coating on another face of said multiple glazing unit, in particular face 2 or 3.

The invention discloses a template agent P123-based 3DNSi / Nb-O composite material, niobium oxalate is used as a niobium source, ammonium fluotitanate is used as a titanium source and a fluorine ion regulator, boric acid is used as the fluorine ion regulator, and P123 is used as a template agent, and the preparation method comprises the following steps: firstly, preparing 3DNSi / Nb-O through a hydrothermal method, and then carrying out heat treatment to remove P123. The 3DNSi / Nb-O is anatase type TiO2, and the Nb element is doped into a TiO2 crystal lattice; the oxygen vacancy microstructure is of a three-dimensional structure composed of nanosheets; and the specific surface area is 25-35 m < 2 > / g. The niobium source is niobium oxalate; the titanium source is ammonium fluotitanate; the fluorine ion regulator is boric acid, and in addition, the ammonium fluotitanate is also the fluorine ion regulator; the template agent is P123. The invention discloses a magnesium hydride composite hydrogen storage material based on 3DNSi / Nb-O and a preparation method of the magnesium hydride composite hydrogen storage material. The initial hydrogen desorption temperature of the obtained MH-3DNSi / Nb-O is 185-230 DEG C; the hydrogen desorption amount is 6.0 to 6.5 weight percent; when the number of times of hydrogen absorption and desorption is 1000-1500, the hydrogen storage capacity is not obvious, and the hydrogen desorption capacity is kept at 6.9-7.1 wt.%.

The application provides a method for preparing an M-phase VO2 film by a light-assisted spray pyrolysis method and the M-phase VO2 film prepared by the method, and belongs to the field of nanometer materials. The method comprises the following steps: (1) preparing a vanadium dioxide spraying liquid: adding vanadium oxyacetonylacetone into anhydrous methanol, stirring and aging to obtain a vanadium dioxide spraying liquid with ultraviolet photosensitive properties; (2) preparing a vanadium dioxide film: introducing the vanadium dioxide spraying liquid in step (1) into an atomizer and spraying onto a substrate coated with a TiO2 anatase phase under ultraviolet light irradiation to obtain the M-phase VO2 film. The method enables vanadium ions to be chelated in the sol by stirring, and the vanadium dioxide spraying liquid has ultraviolet photosensitive properties. The purity of the VO2(M) film is improved by introducing a titanium dioxide transition layer, and the microstructure of the VO2(M) film is improved by ultraviolet light irradiation, thereby improving the visual transmittance and solar light regulation rate of the VO2(M) film.

The invention relates to a preparation method of a (Mo, C) co-doped titanium oxide photocatalyst, TiCl4, CaC2 and Na2MoO4 are taken as raw materials, doping is carried out by adjusting the molar ratio of C4 <-> to Ti < 4 + > and the weight ratio of WMoO3 to WTiO2, the (Mo, C) co-doped nano titanium oxide photocatalyst is formed, the photocatalytic hydrogen production performance of TiO2 is effectively improved, the hydrogen evolution performance reaches 10-12mmol / g.h under the irradiation of 300W xenon lamp light, and the (Mo, C) co-doped nano titanium oxide photocatalyst is prepared. A new way is provided for preparation of the co-doped anatase titanium oxide photocatalyst, and the method has a wide application prospect.

The invention discloses an alcohol modified TS-1 catalyst as well as a preparation method and application thereof, and belongs to the technical field of molecular sieve catalysts. The alcohol modified TS-1 catalyst is prepared by the following steps: preparing a mixed solution from SiO2, 0.04 TiO2, 0.30 TPAOH, 50 H2O and nMOH according to the molar ratio of SiO2: 0.04 TiO2: 0.30 TPAOH: 50 H2O: nMOH; carrying out hydrothermal reaction on the mixed solution to obtain the alcohol modified TS-1 molecular sieve catalyst in one step; the preparation method is simple, the crystallization rate of the molecular sieve is increased by adding alcohols, more titanium atoms can be promoted to enter a skeleton, formation of a Ti-OOH active intermediate is facilitated, and generation of non-active anatase is reduced; the TS-1 molecular sieve is high in crystallinity and shows relatively high activity and alkylene oxide selectivity in a long-chain olefin epoxidation reaction.

The application discloses a molecular sieve catalyst for synthesizing dianhydride from durene by gas phase oxidation, a preparation method of the molecular sieve catalyst and a method for synthesizing dianhydride, the molecular sieve catalyst comprises V, Al, P, O and Ti elements, and contains 0.1wt%-10wt% V2O5, 30wt%-60wt% Al2O3, 30wt%-50wt% P2O5 and 1wt%-20wt% TiO2 in terms of oxides; the structure of the molecular sieve is AFI structure, wherein the Ti element exists in the form of TiO2, and the TiO2 is in the form of anatase. The molecular sieve catalyst comprises V, Al, P, O and Ti elements. The catalyst is suitable for industrial production of dianhydride prepared from durene by gas phase oxidation, and has the characteristics of simple preparation process, high catalytic activity and high dianhydride yield.

The invention provides a titanium dioxide material and a high-temperature denitration catalyst. The preparation method of the titanium dioxide material comprises the following steps: mixing salt containing lattice inhibitor elements, a titanium source and water to obtain a solution; dispersing anatase type titanium dioxide powder into ethanol to obtain dispersion liquid; uniformly mixing the dispersion liquid with the solution, and then adding alkali liquor for reaction; and drying and roasting the precipitate obtained by the reaction to obtain the titanium dioxide material. The preparation method of the high-temperature denitration catalyst comprises the following steps: uniformly mixing an active component precursor, an auxiliary active component precursor, ammonia water and water to obtain a solution, then uniformly mixing the solution with a carrier, drying and roasting to obtain the high-temperature denitration catalyst, wherein the carrier is the titanium dioxide material provided by the invention.

The present invention discloses a preparation method of a catalyst supported on a double-crystalline-phase titanium dioxide nanosheet tube. A titanium dioxide nanosheet tube support with anatase phase and rutile phase is prepared by a hydrothermal method, and then the final catalyst is obtained by reduction and loading of ruthenium. The titanium dioxide nanosheet tube support can not only effectively improve the hydrophilicity of the catalyst, making cyclohexene easy to desorb from the catalyst surface and difficult to re-adsorb, but also greatly improve the selectivity of the catalyst. The use of a large number of mutually cross-linked nanosheets grown on the nanosheet tube avoids the agglomeration inactivation of Ru microcrystals caused by the collision of Ru particles loaded on the support, improving the stability of the catalyst. At the same time, the large specific surface area of the nanosheets is beneficial to improving the dispersion of Ru, thereby reducing the dosage of the active metal and greatly reducing the production cost of the catalyst. The present invention is applicable to the preparation of a catalyst supported on a double-crystalline-phase titanium dioxide nanosheet tube.

The invention discloses a full-spectrum response type aerogel photocatalyst as well as a preparation method and application thereof. The full-spectrum response type aerogel photocatalyst has a multi-heterostructure, and the multi-heterostructure comprises an in-plane heterostructure of amorphous carbon, graphite carbon and a BCN ring and a TiO2 mixed crystal phase structure of anatase type TiO2 and rutile type TiO2. The catalyst can be applied to preparation of methanol through photo-thermal catalytic reduction of CO2 in any single wave band range or combined wave band range in ultraviolet light, visible light and near-infrared light; the preparation method of the full-spectrum response type aerogel photocatalyst comprises the following steps: a) preparation of reduced TiO2 nanoparticles; b) preparation of aerogel; and c) high-temperature carbonization. The aerogel photocatalyst not only can realize full-spectrum response, but also can realize in-situ generation and regulation of oxygen vacancies in photo-thermal catalysis, so that the efficiency of reducing CO2 to prepare methanol is improved.

The invention discloses superfine high-dispersion type nano TiO2 as well as a preparation method and application thereof, and the preparation method of the superfine high-dispersion type nano TiO2 comprises the following steps: adding a TiCl4 solution into a base solution containing ammonium polycarboxylate, polyether modified siloxane and ammonia water, and carrying out coprecipitation reaction to prepare the nano TiO2. According to the preparation method, through the synergistic effect among ammonium polycarboxylate, polyether modified siloxane and ammonia water in the base solution, nano TiO2 which is good in dispersity, uniform in particle size, spherical in microstructure, 5-10 nm in particle size and has a mixed phase of a rutile phase and an anatase phase is prepared, the preparation process is mild in reaction condition, simple in equipment requirement, short in process route and suitable for industrial production, and the preparation method is suitable for industrial production. The industrial production is easy, and the application field of the superfine high-dispersion type nano TiO2 is greatly widened.