75 results about "Titanium peroxide" patented technology

The present invention relates to preparation process of core-shell material and hollow material, and is especially water phase one-step synthesis process for preparing nanometer crystallized anatase type titania material in core-shell and hollow structure. Water soluble titanium peroxide precursor is treated through a sol-gel process so as to coat a nanometer titania layer onto the surface of polystyrene, and the nanometer titania layer in the shell is crystallized directly at relatively low temperature to form nanometer anatase type titania without needing sintering. Furthermore, the precursor may be controlled properly, so that the polystyrene core serving as the template may be dissolved spontaneously after the shell is formed and crystallized and nanometer hollow titania may be obtained directly in water phase. The present invention is simple, easy to operate, low in cost and suitable for batch production, and may find wide application in different aspects.

The invention discloses a method to make nm titanium dioxide light catalyzing film on PET base material the feature includes aging titanium peroxide acid sol to make aqueous phase nm titanium dioxide sol, adding film forming agent to gain film coating liquid, finally, making titanium dioxide film on the pre-treated PET base material. It could be used for aseptic package, antibiotic fabric, antifogging dripping and self-cleaning film. It is low cost, easy to operate and is suited for manufacturing.

The invention relates to the field of a mesoporous material, and in particular relates to a mesoporous titanium dioxide material and a preparation method thereof. According to the mesoporous titanium dioxide material disclosed by the invention, an aperture is 10-30nm, a specific surface area is 63-235m<2>/g and a pore volume is 0.55-1.02cm<3>/g. Compared to a current mesoporous titanium dioxide material, the mesoporous titanium dioxide material disclosed by the invention greatly improves specific surface area, aperture and pore volume; the preparation method comprises the following steps: preparing titanium peroxide acid sol through titanic acid and hydrogen peroxide, forming an self-assembling system through titanium oxide acid sol and a surfactant, and drying and baking the self-assembling system to obtain the mesoporous titanium dioxide material; the method is simple and easy to implement; moreover, the entire preparation process is free from other organic chelating agents or inorganic additives and mineral acids; the preparation system is a pure water system which is independent from any other non-polar or weak-polar solvents; and in addition, the titanium peroxide acid sol prepared is relatively stable at room temperature, and control process is relatively simple.

Provided is a radiotherapeutic agent, including a composite particle, which is obtained by binding a molecule that specifically recognizes a target to a substrate particle including titanium peroxide, and which generates reactive oxygen through irradiation with a radiation. Further, because the radiotherapeutic agent contains the molecule that specifically recognizes a target, the radiotherapeutic agent has a function of accumulating in the target. The radiotherapeutic agent is capable of enhancing effects of radiotherapy, and is capable of reducing side effects on a living body to efficiently attack the target.

A process for the preparation of crystalline microporous titanium silicates using ethylsilicate-40 and titanium peroxide as silicon and titanium sources respectively is described. The process permits a significant decrease in the production cost of titanium silicate containing higher amount of titanium (Si/Ti=20) because of cheaper raw materials as well as reduction in the quantity of tetarpropylammonium hydroxide (TPAOH) template (SiO2:TPAOH=1:0.06-0.1) required for preparation. The material obtained by the present invention is useful as an active catalyst in the reactions such as oxidation of hydrocarbons, alcohols, sulphides, and thioethers.

The invention discloses a method for preparing a finishing varnish with photocatalytic activity, and the method belongs to the field of building coating. The method comprises the following steps of: dissolving titanium tetrachloride into a cold water to form solution, and dripping excessive hydrogen peroxide into the solution to obtain a titanium peroxide compound; dripping ammonia water into the titanium peroxide compound until the pH of the titanium peroxide compound is 10, stirring to react, filtering and washing to obtain hydration titanium peroxide; and dissolving the hydration titanium peroxide in the water, adding nano silicon dioxide sol for hydrothermal reaction, and thus obtaining a product-nano titanium dioxide compound silicon dioxide gel, i.e. the finishing varnish with photocatalytic activity. When the low-temperature decomposition hydration titanium peroxide is adopted by the method to prepare the nano titanium dioxide sol, the nano silicon dioxide sol is added, so that the photocatalytic activity of nano anatase obtained after the reaction is higher, and a film can be formed later due to hydroxyl on a silicon dioxide surface; and the nano titanium dioxide is an inorganic substance and cannot be easily decomposed through the photochemical catalytic reaction of titanium dioxide.

The one step process of removal of chromophore/dye/organic pollutant from a solution comprising a polymer free titanium oxide gel i.e. high zeta potential is disclosed. The concentration of the chromophores is removed up to 95-100%.

The invention discloses a method for preparing monodisperse submicron microsphere of titanium dioxide, which comprises the following steps: adding a reducing agent in the aqueous solution of titanium peroxide at the temperature of 0 DEG C; aging the obtained mixed solution till the system is white emulsion; and sintering the white emulsion to obtain the monodisperse submicron microsphere of titanium dioxide. The method does not need expensive and harmful organic reagent, and is low in cost, strong in process operability and suitable for mass production.

A method for forming an antifouling coating disposed on the surface to be treated of a substrate having a surface comprising a plastic or a rubber, which contains a photocatalyst and an amorphous titanium peroxide having substantially no photocatalytic activity, characterized in that it comprises a step of subjecting the surface to be treated of the substrate to a dry treatment for introducing a hydrophilic group onto the surface, and a step of applying an aqueous coating material containing a photocatalyst and an amorphous titanium peroxide having substantially no photocatalytic activity on the resultant surface after the treatment; and an antifouling material having an antifouling coating formed by the method. The dry treatment is preferably a plasma discharge treatment, a corona discharge treatment or an ultraviolet irradiation treatment.

The present invention provides a method for producing a titanium oxide. The method can be applied to produce a titanium oxide having a large specific surface area. The method typically entails calcinating at least one titanium oxide precursor selected from a titanium hydroxide and titanium peroxide, wherein the calcination occurs in the presence of nitrogen and at a steam pressure of at most about 8,000 Pa.

The invention discloses a preparation method for polymerizing titanium dioxide by graphene oxide in situ. The method comprises the following steps: preparing graphene oxide suspension liquid; pouring metatitanic acid into the graphene oxide suspension liquid, adding a hydrogen peroxide solution at the concentration of 30 percent slowly and dropwise, stirring, adding ammonia water dropwise to adjust the ph value to be 8.5 to 10, and stirring for 3 to 10 hours to obtain titanium peroxide and graphene oxide sol, wherein the mass ratio of the metatitanic acid to the hydrogen peroxide solution to the graphene oxide suspension liquid is (5-7):(40-60):(100-105); performing heat preservation on the obtained titanium peroxide and graphene oxide sol at 80 to 120 DEG C for 4 to 24 hours; adding the ammonia water into the heated titanium peroxide and graphene oxide sol dropwise to enable the graphene oxide to polymerize the titanium dioxide to separate out of the solution, and filtering and drying to obtain the graphene oxide polymerized doped titanium dioxide. The hydroxyl and the carboxyl on the surface of the graphene oxide and the hydroxyl of the titanium peroxide can perform hydroxyl shrinking reaction or dehydration reaction under the hydrothermal action, so the in-situ polymerization of the titanium dioxide on the surface of the graphene oxide is realized.

The invention relates to a manufacturing method of an oxygenation type seed treatment agent containing titanium superoxide. The manufacturing method is characterized by comprising the following steps of: neutralizing titanium salt ice water solution with a base to prepare a new precipitate metatitanic acid capable of being dissolved in citric acid; replacing titanium chloride or sulfate with metatitanic acid to be used as a raw material for synthesizing titanium citrate; synthesizing titanium citrate with metatitanic acid as a titanium source and citric acid as an acid solvent and chelating agent by a microwave hot melt chelating process; neutralizing titanium citrate saturated solution with potassium carbonate powder to adjust the pH to 5.5-6.5, and salting out to prepare organic titanium-organic potassium compound salt; carrying out complex reaction on the titanium citrate-potassium citrate compound salt and hydrogen peroxide to prepare potassium citrate compound salt containing titanium superoxide; and compounding potassium citrate compound salt containing titanium superoxide with urea, and mixing with sprout polysaccharide, potassium borate and potassium phosphate to prepare the oxygenation type seed treatment agent containing titanium superoxide. According to the invention, titanium superoxide is used as an oxygenation agent, sterilizing agent and seed germination and rooting accelerant of the seed treatment agent.

In solution, hydrous titanium oxide (HTO) reacts with hydrogen peroxide (H2O2) in the presence of a volatile base catalyst to produce a titanium peroxide complex (PTC), thus preparing solution of titanium dioxide particles. The solution is diluted by at least two folds. Then, part of the volatile catalyst is removed from the solution by evaporation to form the particles, and the particles contain the titanium dioxide and the PTC which is adsorbed on the particle, thus obtaining the transparent solution with the pH being 7. The particles in the solution can have minus 60-minus 80mV xi electric potential, 10nm-25nm particle size and more than 4wt% concentration, such as 6-8wt%.

The invention relates to a method for synthesizing citricacide-titatnium chelate by a microwave chelation process by using new metatitanic acid precipitate. The method is characterized in that: the new metatitanic acid precipitate is prepared by neutralizing an iced solution of titanium salt by using alkali; the new metatitanic acid precipitate replacing titanium chloride and sulfate is used as raw materials for synthesizing the citricacide-titatnium chelate; and the citricacide-titatnium chelate is synthesized by a microwave hot melting chelation process by using the new metatitanic acid precipitate as a titanium source and citric acid as an acid solvent and chelant. The synthesized citricacide-titatnium chelate is high in purity, does not contain foreign ions such as chlorine ions or sulfur ions, is stable in performance, and can be placed for a long time; titanium gel precipitate is not separated out after the citricacide-titatnium chelate is diluted; and the citricacide-titatnium chelate can be compounded with multiple kinds to metal ions and organic matter, can be reacted with peroxide to form titanium peroxide complex, and can also be compounded into various functional materials. A process is simple and is easy to control.

The invention provides a preparation method for titanium dioxide/carbon nanotube composite nanosheets, and relates to the composite nanosheets. The preparation method comprises the following steps: adding a titanium source into deionized water, performing stirring in an ice water bath, adding an alkaline solution, performing a reaction to generate a white precipitate, performing centrifugation toremove a supernatant liquid, performing washing by using water, dispersing the white precipitate into water, adding hydrogen peroxide until the solution is yellow and transparent, adding deionized water for dilution to obtain a titanium peroxide complex aqueous solution, and storing the aqueous solution in a refrigerator for standby application; dispersing the carbon nanotubes into a nitric acid solution, performing reflux treatment, performing centrifugal washing, and dispersing the carbon nanotubes into deionized water; mixing the titanium peroxide complex aqueous solution and the carbon nanotube dispersion liquid, performing stirring, and allowing the stirred material to stand for aging; and freezing the mixed solution obtained after stand aging, performing drying to remove water to obtain a precursor of bulk-shaped dried titanium dioxide/carbon nanotube composite nanosheets, and performing calcination to obtain the titanium dioxide/carbon nanotube composite nanosheets. The titaniumdioxide/carbon nanotube composite nanosheets provided by the invention have a porous two-dimensional laminated structure.

The invention provides a preparation method of a low-cost lithium titanate material. The preparation method comprises the following steps of (1) allowing metatitanic acid to react with hydrogen peroxide, adding an appropriate amount of ammonia water to form a stable titanium peroxide complex solution; and (2) weighting a lithium source according to a proportion, adding the lithium source into thetitanium peroxide complex solution prepared in the step (1), adding a dispersing agent, stirring to form a uniform solution, and drying and roasting to prepare the lithium titanate material. The low-cost metatitanic acid (the cost is about one third of titanium dioxide) is a titanium source, the cost is reduced, the appropriate amount of hydrogen peroxide and the ammonia water to prepare the stable titanium peroxide complex compound, the titanium peroxide complex compound more fully reacts with a lithium salt, the prepared lithium titanate material is excellent in performance, the half-batteryinitial capacity is 174mAh/g, and the initial charge-discharge efficiency is larger than 95%.

The invention discloses a method for preparing a TiO2 film on a flexible substrate. According to the method, based on a titanium peroxide technology, by using phenylamine a reducing agent, through a reducing function of phenylamine to titanium peroxide, an anatase type TiO2 functional film is deposited on the surface of the flexible substrate at a normal temperature; and the generated TiO2 particles uniformly cover the surface of the substrate and are firmly combined with the substrate, and the obtained TiO2 flexible film is better in photocatalytic performance. The method is performed at a normal temperature, and no heat treatment is needed in a preparation process, and the method is simple and easy to operate.

Method for producing novel photochemically-active metal oxide-containing aqueous compositions such as TiO2 compositions coated or sprayed and dried under ambient conditions to form novel photochemically-active, colorless coatings having strong wetability and adhesion to clear substrates such as window glass. Preferably the present compositions include a suitable wetting agent or combination of agents to improve the wetability of the Titanium peroxide-containing amorphous film, allowing thinner films to be readily applied. Also the inclusion of an acrylic aliphatic urethane polymer can replace wholly or partially the titanium peroxide sol and provide additional film forming and wetability properties. The acrylic urethane polymer reduces or eliminates the amount of titanyl peroxide that is required and thereby reduces or eliminates the yellow color.

The invention discloses a processing method of a transparent, self-cleaning, antibacterial, and wear-resistant coating on the polymer surface. The preparation method comprises the following steps: preparing a titanium peroxide solution; preparing a titanium peroxide compounded complex solution; preprocessing a substrate; impregnating the substrate into the titanium peroxide compounded complex solution, and carrying out a heat treatment to obtaina transparent, self-cleaning, antibacterial, and wear-resistant coating on the substrate. The provided method can produce a transition metal oxide coating on the surface of a substrate, the coating has a large surface and photoelectrical function, the production cost is low, no pricy equipment is needed, and the procedure is simple. Through the redox reactions between polymer monomers with a conjugate structure and a transition metal peroxide compounded complex, the destruction to adhesive and substrate due to optical corrosion of optical active oxides is avoided, and moreover, the optical activity is enhanced through the heterojunction effect. Besides, through the design and synthesis of a peroxide compounded complex system, the application range of painting by utilizing the redox reactions between polymer monomers with a conjugate structure and a transition metal peroxide compounded complex is enlarged.

The invention discloses a preparation method of titanium dioxide-metal water-based nanometer composite sol. The preparation method comprises the following steps: 1, dissolving metal salt in water to obtain a metal salt water solution, and reflowing the metal salt water solution by heating while adding a reducing agent water solution until a reflowing water solution system discolors for later use, wherein a mol ratio of the added reducing agent to metal ions is 1-50; 2, dissolving titanate in an aqueous solution of hydrogen peroxide to obtain an aqueous solution of titanium superoxide, regulating the pH value of the aqueous solution of titanium superoxide by virtue of an inorganic aqueous alkali solution; and 3, adding the aqueous solution of titanium superoxide prepared in the step 2 into the discolored metal salt water solution prepared in the step 1 to obtain a composite solution, and reflowing the composite solution by heating to obtain the final product. According to the preparation method disclosed by the invention, a metal-oxide composite structure can be effectively formed, and the process operability is high; the preparation method is suitable for batch preparation, and has a possibility of industrialized production and wide practicability.