395results about "Titanium dioxide" patented technology

The invention provides a method for recovering Si, C and TiO2 based on chlorinated waste salt water quenching slag, which comprises the following steps: sequentially carrying out water quenching dissolution, precipitation separation and filter pressing dehydration treatment on chlorinated waste salt to obtain water quenching slag and supernate; adding a dilute acid solution into the water-quenched slag, dissolving, and adding a reducing agent for reaction to obtain slurry; carrying out solid-liquid separation on the slurry to obtain a solid material and filtrate; the filtrate is pumped into a boiling bed separator, the petroleum coke and TiO2 are intercepted by a medium material layer, clear liquid is discharged, then the medium material layer is subjected to backwashing regeneration, and the desorbed petroleum coke and TiO2 are subjected to graded enrichment by a hydrocyclone, so that petroleum coke slurry and TiO2 slurry are obtained. According to the method, TiO2, C and other resources in the water-quenched slag obtained after molten salt chlorination waste salt water quenching are recycled, and the technical problem that in the existing chlorination waste salt resourceful treatment process, Si, C, TiO2 and other resources in the water-quenched slag are wasted is solved.

The invention discloses a sodium-ion battery positive electrode material preparation system, and relates to the technical field of sodium-ion battery production, and the sodium-ion battery positive electrode material preparation system comprises a raw material intelligent management and control module, an equipment linkage control module, a sintering process precise regulation and control module, a quality online monitoring module and a data management and analysis module; through high-precision automatic weighing and closed conveying of the raw material intelligent management and control module, the raw material matching precision is improved, material loss is reduced, by means of a collaborative logic algorithm of the equipment linkage control module, the material circulation efficiency is improved, the production period is shortened, and by means of dynamic regulation and control of the sintering process precise regulation and control module, the production efficiency is improved. The sintering qualified rate is improved, the product batch quality difference is reduced, unqualified products are reduced by using real-time detection and feedback of the quality on-line monitoring module so as to reduce the production cost, process optimization, quality tracing and energy consumption monitoring are realized through the data management and analysis module, the comprehensive energy consumption is reduced, and the production efficiency is improved. And large-scale, high-quality and low-cost production of the sodium-ion battery positive electrode material is realized.

This invention belongs to the field of microwave absorbing material preparation technology, and discloses a two-step partial oxidation method to improve the microwave absorption performance of MXene materials. By performing hydrothermal pre-oxidation and heat treatment on MXene materials, oxide nanoparticles are grown in situ on their surface, achieving controllable partial oxidation. The MXene matrix retains a two-dimensional layered structure, and a heterogeneous interface is formed between the oxide nanoparticles and the MXene matrix. This adjusts the conductivity, optimizes impedance matching, enhances interface polarization, improves microwave absorption performance, and provides high-temperature stability.

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

A method of making surface-functionalized transition metal oxide nanoparticles comprises: providing a sol comprising transition metal oxide nanoparticles dispersed in an aqueous liquid medium having a pH of less than or equal to 3.5, combining the sol with an extractant composition comprising at least one carboxylic acid and at least one organic amine, and a water-immiscible organic solvent, and separating at least a portion of the organic phase from the aqueous phase and then at least partially removing the water-immiscible organic solvent. The carboxylic acid has from 6 to 30 atoms. The organic amine is represented by the formula R2R3NH, wherein R2 is a hydrocarbyl group having from 6 to 30 carbon atoms, and R3 is H or an alkyl group having from 1 to 4 carbon atoms. The at least one organic amine is present in an amount sufficient raise the pH to at least 5, thereby forming discrete separable aqueous and organic phases. A surface-modified nanoparticle composition, a curable composition and an article comprising the same are also disclosed.

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 application relates to the field of electrochemistry, and more particularly to a gradient micro-crack composite coating titanium-based metal oxide electrode and a preparation method thereof. The electrode comprises a titanium substrate and a gradient micro-crack composite coating, which comprises, in sequence, a dense low-crack bottom layer prepared by a thermal decomposition method and a high-crack density surface layer prepared by a sol-gel method. Experimental results show that the gradient micro-crack composite coating can effectively prevent the penetration of electrolyte into the titanium substrate through the dense structure of the bottom layer, avoid the passivation of the substrate, and prolong the service life; the high-crack structure of the surface layer significantly increases the electrochemical active surface area, ensuring high electrocatalytic activity. The electrode realizes the synergistic consideration of activity and life, and has simple preparation process and low cost, without the need to introduce additional intermediate layers or complex equipment, and is suitable for electrochemical engineering fields such as chlor-alkali industry, electrolytic seawater chlorination, cathodic protection and wastewater treatment.

The invention discloses a titanium dioxide nanorod / dissimilar metal MOFs heterojunction material and a preparation method and application thereof, and belongs to the technical field of photoelectrochemistry seawater hydrogen production. Soluble nickel salt, soluble cadmium salt or soluble cobalt salt and ammonium molybdate are adopted as metal sources, spherical dissimilar metal MOFs grow on the surface of a TiO2 nanorod in situ, and the TiO2 nanorod / dissimilar metal MOFs heterojunction material is prepared. According to the present invention, the oxygen deficiency-regulated dissimilar metal MOFs material (i.e., the titanium dioxide nanorod / dissimilar metal MOFs heterojunction material) is obtained through subsequent acid etching and annealing treatment, the material is subjected to in-situ reconstruction during the OER process to spontaneously form the active hydroxide (NiOOH) of anion protection (MoO4 < 2->), and the excellent stability is represented; only small Faraday efficiency loss (1.2-2.3%) occurs in a high chloride ion environment (3.5 wt%-7wt% of NaCl), and an extensible path is provided for industrial-scale solar hydrogen production by using seawater.

The application provides a method for treating and recycling iron-containing waste sulfuric acid in titanium dioxide production, which is based on screening of a strain capable of treating iron-containing waste water in a low pH environment, and establishes a method for treating iron-containing waste sulfuric acid, which can effectively realize resource recycling. The waste water treatment bacteria used are Bacillus QD-QJ-062 strain, and the preservation number is CGMCC No.33725. The QD-QJ-062 strain of Bacillus screened by the application can effectively treat the iron-containing waste water in a low pH environment, promote the generation of ferrous oxalate precipitation, and generate ferrous oxalate by-products. The generated ferrous oxalate can be converted into ferrous sulfate by sulfuric acid, and oxalic acid can be recycled, thereby reducing the operation cost. The sulfuric acid solution after iron removal can be neutralized by limestone to generate high-purity gypsum, thereby realizing resource recycling and treatment.

The utility model relates to a titanium dioxide zero-carbon suspension rapid crystal transformation system which comprises a desulfurizing tower, an induced draft fan, a bag collector, a scattering dryer, a high-temperature fan, a first cyclone cylinder, a suspension calcining furnace and a second cyclone cylinder. According to the utility model, titanium dioxide is produced by adopting a suspension calcination technology, green electricity is adopted as electric energy, and a byproduct carbon dioxide is recycled, so that zero-carbon production of products is facilitated, and carbon neutralization in the titanium dioxide industry is promoted.

The present invention relates to an exothermic process for producing metal oxides or metalloid oxides, comprising introducing metal and / or metalloid precursors into a flame formed by burning a gas mixture comprising oxygen and hydrogen, at least a portion of the hydrogen being obtained from the electrolysis of water or an aqueous solution using electrical energy obtained at least in part from a renewable energy source, and at least a portion of the thermal energy of the flame being transferred by at least one exchanger to a first heat transfer medium, thereby heating the first heat transfer medium to a maximum temperature in the range between 80°C and 150°C.

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.

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%.

The present application belongs to the technical field of energy saving and consumption reduction of titanium dioxide production, and particularly relates to a method for energy saving and pollution reduction in the calcination process of sulfuric acid method titanium dioxide. The present application realizes the cascade utilization of high-temperature to medium-low-temperature waste heat through the integrated scheme of "preheating and quality improvement + oxygen-rich calcination + tail gas synergistic desulfurization and denitrification + resource utilization of by-products", that is, the calcination tail gas (1000-1100℃) is first used to generate steam for production through a waste heat boiler, and then is used for preheating and drying metatitanic acid after being cooled, thereby realizing the cascade utilization of high-temperature to medium-low-temperature waste heat, and simultaneously, the oxygen-rich combustion improves the fuel efficiency, the natural gas combustion is more sufficient, the energy consumption per unit product is reduced by 30-40%, and the ammonia method is used to simultaneously remove SO2 and NO x in a single reactor, the desulfurization efficiency is greater than or equal to 95%, the denitrification efficiency is greater than or equal to 85%, the concentration of dust in the tail gas after being removed by a bag filter is less than or equal to 10 mg / Nm3 for emission, the unity of environmental benefits and economic benefits is realized, and a new path is provided for the green upgrading of the sulfuric acid method titanium dioxide industry.

The invention relates to the technical field of lithium ion batteries, and discloses a composite diaphragm with a coating layer constructed by rodlike titanium dioxide and a preparation method of the composite diaphragm. The composite diaphragm comprises a base membrane and a composite ceramic coating coated on at least one surface of the base membrane, the composite ceramic coating is formed by coating slurry containing boehmite, modified rod-like titanium dioxide and a binder; wherein the modified rodlike titanium dioxide is rodlike titanium dioxide of which at least the surface contains oxygen vacancies. The rod-like titanium dioxide with specific morphology is directly introduced to be dispersed and bonded with boehmite to form the composite ceramic coating, so that a stable irregular porous structure is formed in the composite ceramic coating, and the irregularity is beneficial to keeping an electrolyte in the diaphragm coating and promoting ion migration; oxygen vacancies are introduced into at least the surface of the rod-shaped titanium dioxide, so that richer pore channels are formed, ion migration is further promoted, and the electrolyte preservation amount of the diaphragm can be further promoted.

This invention belongs to the field of solid waste resource recycling technology in the metallurgical industry. It discloses a process for preparing iron oxide red and extracting titanium dioxide from high-iron red mud. The process involves mixing high-iron red mud with an alkaline agent, followed by water leaching to obtain a water-leached solution and a water-leached residue. The water-leached solution undergoes desilication and carbon removal treatment to obtain aluminum hydroxide and sodium carbonate solutions. The water-leached residue is then acid-leached with sulfuric acid; silicon is recovered as silica gel, while aluminum and iron enter the solution and undergo polymerization to prepare a water purification agent. The acid-leached residue is treated with a high-temperature heap leaching-water leaching process using concentrated sulfuric acid to achieve efficient dissolution and separation of titanium. The titanium-iron mixed solution is subjected to stepwise crystallization control, successively precipitating ferric sulfate and ferrous sulfate crystals, which are then pyrolyzed to generate high-purity iron oxide red. Finally, the mother liquor is subjected to titanium precipitation and pyrolysis to obtain titanium dioxide. This invention achieves efficient separation and high-value utilization of all components of iron, titanium, aluminum, and silicon in red mud. The process flow is rationally cyclical, resulting in high-value-added products with low energy consumption and no secondary pollution.

Disclosed herein is a metal oxide aerogel catalyst for hydrogenation and / or hydrodeoxygenation, a method for preparing the same, and a method for hydrogenation and / or hydrodeoxygenation using the same. The catalyst consists of a metal and an oxide thereof, and the catalyst is in a form of an aerogel produced by supercritical drying. The catalyst has an effect of providing high hydrogenation and / or hydrodeoxygenation efficiency of an oxygen-containing compound.

The application provides a hydrogen sensor and a manufacturing method thereof, and relates to the technical field of gas sensors. The sensor electrode is manufactured based on a carrier, and at least one of microelectronic printing technology, screen printing technology, nanoimprint, spin coating or blade coating, and sputtering or evaporation in microelectronic technology is used to manufacture titanium dioxide and palladium nanoparticles on the sensor electrode, so as to manufacture a gas sensitive layer and form a hydrogen sensor, wherein the gas sensitive layer is connected with the sensor electrode. The hydrogen sensor and the manufacturing method thereof have the advantages of simple process, shortened response time of the hydrogen sensor, and improved sensitivity of the hydrogen sensor.

The application belongs to the technical field of corrosion protection, and relates to a preparation method of an anti-corrosion filling material, in particular to a preparation method of hydroxylated titanium dioxide and application thereof. The preparation method of the hydroxylated titanium dioxide comprises the following steps: placing raw material nano-titanium dioxide in a KOH solution with a pH value of 11-13, and carrying out hydrothermal reaction at 180-200 DEG C for 24-36 h to obtain the hydroxylated titanium dioxide. The hydroxylated titanium dioxide prepared by the method has better bonding force with the adhesive paste, the prepared photoelectrochemical cathodic protection adhesive paste is not easy to be pulverized, and has long-time photoelectrochemical cathodic protection capacity.

The application discloses a preparation method of high-purity titanium dioxide, which comprises the following steps: S1, titanium tetrachloride is slowly mixed with an aqueous hydrochloric acid solution to obtain a primary hydrolysis material containing titanium oxychloride and hydrochloric acid; S2, the primary hydrolysis material is mixed with water and subjected to secondary hydrolysis at 90-110 DEG C, and then solid-liquid separation is conducted after hydrolysis to obtain metatitanic acid precursor; and S3, the metatitanic acid precursor is calcined to obtain high-purity titanium dioxide. In the application, titanium tetrachloride is directly mixed with an aqueous hydrochloric acid solution under the conditions of a limited concentration and a limited amount at room temperature to generate a mixed solution of titanium oxychloride and hydrochloric acid, and then the mixed solution of titanium oxychloride and hydrochloric acid is subjected to secondary hydrolysis under the condition of a limited high temperature. Compared with direct hydrolysis of an aqueous titanium tetrachloride solution, the hydrolysis process does not need to be conducted under a low-temperature condition, there are less intermediate products, the reaction is easy to control, titanium oxychloride is fully hydrolyzed, and the hydrolysis rate is more than 99.0%.

This invention provides a method for preparing rice-grain-shaped TiO2-B with adjustable aspect ratio, belonging to the technical field of anode materials for alkali metal ion batteries. The TiO2-B belongs to the monoclinic crystal system, space group C2 / m. The TiO2-B particles are ellipsoidal, with the c-axis as the major axis (7-13 nm) and the ab-axis as the minor axis. Its aspect ratio can be controlled within the range of 1.76-3.51, achieving a purity greater than 98%. The raw materials are inexpensive and reusable. The preparation method provided by this invention is simple, yields a highly controllable product with a large specific surface area, high purity, and good electrochemical performance.

This invention belongs to the field of photoelectric active materials and photoelectric sensing analysis technology, specifically relating to a Z-type heterojunction composite material, its preparation method, and its application. The composite material uses Ti-MOF as a precursor, annealing to obtain carboxyl-functionalized p-type 2DTiO2@C nanocakes. Chemical reduction forms AuNPs in situ on the surface of the 2DTiO2@C nanocakes, obtaining p-type 2DTiO2@C / Au nanocakes. Amino-modified p-type 3D peony-shaped BiOI is added to the p-type 2DTiO2@C / Au nanocakes, and electrostatic interaction yields the 2DTiO2@C / Au / 3DBiOI Z-type heterojunction composite material. This invention uses a metal-organic framework template-assisted calcination method, chemical reduction, and electrostatic interaction to design and prepare the Z-type heterojunction composite material, improving photoelectric activity and achieving rapid, highly sensitive, accurate, and reliable detection of hexavalent chromium ions.

The present application belongs to the technical field of energy saving and resource utilization in titanium dioxide production, and particularly relates to a method and system for heat energy utilization of a titanium dioxide gas-powder system. The method is aimed at the problems of waste of high-temperature tail gas heat energy of the gas-powder system and high energy consumption for cold preparation in the front production process, and adopts a two-stage cooling and heat energy recovery mode of "lithium bromide refrigerating unit + cooling device". The specific steps are as follows: introducing the clean high-temperature tail gas at 220-240 DEG C after dust removal into the lithium bromide refrigerating unit, driving the preparation of cold water or ice water by using the heat energy thereof, and directly supplying the front titanium liquid freezing crystallization process; then, the tail gas enters the secondary cooling device for deep cooling to below 70 DEG C for standard emission, while the circulating water is heated to hot water at 45-55 DEG C for reuse in the water washing process. The present application realizes "waste heat" preparation of "cold" and recovery of low-level heat energy through heat energy cascade utilization, the system heat recovery rate is greater than or equal to 92%, the power consumption of the lithium bromide unit is only 1 / 10 or less of the traditional refrigeration mode, and the production cost is significantly reduced.

The utility model provides an ilmenite sulfuric acid intermittent premixing device capable of adjusting the proportion, and relates to the technical field of intermittent premixing devices, the top of a device shell is provided with a storage cavity, the bottom of the storage cavity is provided with a splitter plate, the splitter plate is oppositely provided with two groups of splitter holes, one group of splitter holes is communicated with an external sulfuric acid storage container through a curved pipe, and the other group of splitter holes is communicated with an internal sulfuric acid storage container through a curved pipe. The other group of shunting holes are communicated with the interior of the device shell through connecting pipes; the opening and closing control of the two groups of shunting holes is realized through a control device, and the opening and closing states of the two groups of shunting holes are opposite; compared with the prior art, the utility model provides a device capable of metering the volume of concentrated sulfuric acid without depending on a flow meter, the premixing working efficiency is high, the labor intensity of operators is reduced, and the accuracy is higher.

The invention discloses a method for realizing degradation of polyalkylene oxide compounds and controllable molecular weight through a promoter, which comprises the following steps: adding a photodegradation promoter into a high-molecular-weight polyalkylene oxide product, adjusting the proportion of the promoter and the proportion of effective components, and accurately controlling the shear molecular weight under the irradiation of an ozone emitter, so that the molecular weight of the polyalkylene oxide compounds is controllable. According to the invention, polyalkylene oxide with different molecular weights of 30,000-3,000,000 is prepared by using the photodegradation cocatalyst, so that the photodegradation cocatalyst can meet the requirements of customers in different fields, and meanwhile, the photodegradation cocatalyst prepared by the invention can be recycled to achieve the benefits of reducing cost and improving efficiency.

The application discloses a muffle furnace for preparing composite titanium white powder and relates to the technical field of muffle furnaces.The muffle furnace for preparing composite titanium white powder comprises a furnace body and a furnace cover, a furnace cavity is arranged in the furnace body, a placing table is arranged at the bottom of the furnace cavity, and an annular cover is connected to the furnace cavity through a lifting mechanism.The muffle furnace for preparing composite titanium white powder can lift the top of a crucible before heating and calcining, so that powder materials are prevented from escaping;the powder materials can be extruded and laid flat in an annular area between a hollow cover and the crucible, so that the powder materials are prevented from accumulating and the heating area is increased;when the powder materials are heated and calcined, the hot air in the furnace cavity can be circulated, and the powder materials between the hollow cover and the crucible can be reciprocally rolled and pressed, so that the powder materials are prevented from caking;after the powder materials are heated and calcined, the hot air in the furnace cavity can be circulated and heat-exchanged through a heat exchanger, the cooling effect is improved, waste heat is recycled, the muffle furnace is more energy-saving and environment-friendly, and the efficiency and effect of the preparation of the composite titanium white powder can be improved.

The invention provides a preparation method of a titanium dioxide carrier based on ionic liquid regulation and control and a PEM electrolyzed water anode catalyst, and belongs to the technical field of PEM electrolyzed water hydrogen production. Titanium dioxide with a specific morphology is prepared by adopting a hydrothermal method under the assistance of the ionic liquid, the conductivity of the titanium dioxide is improved, under the condition that the dosage of precious metal is low, the supported precious metal iridium catalyst is superior to a commercial iridium black catalyst in the aspect of PEM electrolyzed water anode reaction activity, and excellent durability is shown; and the energy conversion efficiency is obviously improved. The method is simple and convenient to operate, and has huge market requirements and application prospects in the fields of electro-catalysis technology, petrochemical engineering and the like.

The present application provides a compound used as a coating agent for providing a particle having excellent dispersibility and refractive index, a particle having a surface coated with the compound, a production method thereof, and a dispersion composition containing the particle. The compound according to the present application has a structure represented by Formula (1). In the formula, R 1 represents an organic group having 1 to 30 carbon atoms, R 2 represents OR 3 or a group represented by Formula (2), R 3 represents an organic group having 1 to 30 carbon atoms, n1 and n2 represent an integer of 0 or more, n1 + 2 x n2 represents a valence number determined by the kind of L, L represents aluminum, gallium, yttrium, titanium, zirconium, hafnium, bismuth, tin, vanadium, or tantalum, * represents a bonding site, and R 4 and R 5 represent an organic group having 1 to 30 carbon atoms which can have an oxygen atom. The particle according to the present application has a structure represented by Formula (1) on the surface.

The application discloses a preparation method of battery-grade nanometer titanium dioxide, which comprises the following steps: dissolving a strong alkali weak acid salt as a pH regulator into ice water to make titanium salt completely hydrolyzed to prepare titanic acid; and using sodium hydroxide as the pH regulator to make the titanic acid further converted into a crystalline precursor to prepare a titanium complex [Ti(OH)4(OH)2] 0 Then, the complex is sheared and dispersed, and then subjected to a hydrothermal reaction; after the reaction is completed, the product is completely washed with water and calcined to prepare nanometer titanium dioxide. The prepared nanometer titanium dioxide has super-low impurity content, small particle size and uniform particle size distribution; the total content of magnetic substances, including Cr, Fe, Ni and Zn, is less than 0.2 ppm; the particle size is 0-100 nm; and the average particle size is 50 nm, so that the nanometer titanium dioxide is an excellent material for battery doping.

This invention relates to an atomic-level manufacturing method and apparatus for two-dimensional metal oxide nanosheets based on controllable micro-explosion, belonging to the field of functional nanomaterials and atomic-level precision manufacturing technology. This invention uses transition metal energetic complexes and energetic oxygen compounds as metal-oxygen integrated precursors. Under the constraint of an array-type nano-confined microcavity, controllable micro-explosions are synchronously triggered by nanosecond lasers to achieve nanosecond-level stoichiometric precision in the directional self-assembly of two-dimensional metal oxide nanosheets. The preparation cycle of this invention is reduced to less than 10 minutes, and the overall energy consumption is less than 1% of that of the traditional hydrothermal method. The product has excellent specific surface area, photocatalytic and cycling performance, and is 100% compatible with existing mass production lines. It is suitable for large-scale manufacturing in fields such as photocatalysis, energy storage, gas sensors, and environmental governance.