176 results about "Titanium hydroxide" patented technology

The invention discloses a preparation method of graphene loaded with anatase type nano titanium dioxide and an application thereof. The preparation method comprises the following steps: preparing graphite oxide from crystalline flake graphite; carrying out reduction reaction on the graphite oxide to obtain graphene by taking hydrazine hydrate as a reducing agent and sodium dodecyl benzene sulfonate as a dispersing agent; preparing titanium hydroxide colloidal solution by taking tetrabutyl titanate as a titanium source; mixing the ethanol solution of graphene and the titanium hydroxide colloidal solution, stirring and calcining to prepare the graphene loaded with anatase type nano titanium dioxide. The graphene loaded with anatase type nano titanium dioxide prepared by the method can be mixed with copper powder to prepare the negative electrode of a nickel-hydride secondary battery. The method provided by the invention has the advantages of simple preparation process and low cost and is easy to operate. When the prepared graphene loaded with anatase type nano titanium dioxide is used as the active material of the cathode of the secondary battery, the effects of high discharge specific capacity and good circulation stability are achieved.

The invention discloses a TiO2/ACF photocatalyst and making method and appliance in the air purifying domain, which comprises the following steps: adding diluted sulphuric acid solution in the titanium hydroxide emulsion; shocking in the ultrasonic wave after stirring evenly to make the emulsion; soaking the active carbon fiber to wash through ultrasonic wave; drying; immersing the fiber in the acid emulsion and shocking by ultrasonic wave; drying to produce photocatalytic pioneer with titanium hydroxide; sintering the pioneer to make the TiO2/ACF photocatalyst.

Disclosed is a surface-treating composition having excellent corrosion resistance, thermal discoloration resistance, blackening resistance, scratch resistance, post-processing adhesion to an organic resin layer that is formed thereon, and adhesion under high-temperature high-humidity environments. The surface-treating composition comprises (A) an aqueous titanium-containing solution produced by mixing at least one titanium compound selected from a hydrolysable titanium compound, a low-condensed product of a hydrolysable titanium compound, titanium hydroxide and a low-condensed product of titanium hydroxide with aqueous hydrogen peroxide, (B) a zirconium carbonate compound, (C) an organic phosphoric acid compound, (D) a metal phosphate salt, (E) silicon oxide, (F) a water-soluble organic resin and/or a water-dispersible organic resin, and (G) a silane coupling agent at a specified proportion.

Under the presence of at least one out of copper, manganese, nickel, cobalt, iron, zinc, and compounds thereof, a tetravalent titanium salt solution and a basic solution are reacted together to form a hydroxide of titanium and the above metal, and then the titanium hydroxide is peroxidated with an oxidizing agent to manufacture an aqueous liquid or dispersion having therein titanium oxide fine particles having peroxy groups; by using this alone to form a coating film adjacent to a coating film of an organic dye or pigment, or using this to form a coating film together with an organic dye or pigment, a drop in decorativeness of color due to fading or discoloration of a coating material, a printed article, a building material, a fiber, an organic polymer resin product or the like can be prevented, and moreover surface anti-soiling and hydrophilic properties can be realized.

The invention discloses an electrode active material for a lead-acid storage battery. The electrode active material comprises lead powder and a non-metallic titanium compound; the lead powder comprises one or more kinds of metal lead powder, ball-milling lead powder, Barton lead powder, Pb<2>O powder, PbO powder, Pb<2>O<3> powder, Pb<3>O<4> powder and PbO<2> powder; and the non-metallic titanium compound comprises one or more kinds of titanium sulfide, titanium nitride, titanium boride, titanium carbide, titanium hydride, titanium hydroxide, titanium silicide, a symbiotic blend of the abovementioned compounds on an atomic micro level or atomic cluster level, and doped compounds formed by doping the abovementioned compounds with one or more kinds of F, Sb, Sn, Ca, Bi, Co, Ca, Al, Mg, N, P, O and C. By virtue of the electrode active material for the lead-acid storage battery with an improved formula, the specific power, specific energy, charging-discharging efficiency, cycle life, low-temperature performance and the like of the lead-acid storage battery can be obviously improved.

The invention discloses a titanium-silicon composite oxide carrier and a preparation method thereof. The carrier is prepared from titanium hydroxide-silicon hydroxide gel prepared by a super-solubilizing micelle method; and because the gel contains surfactant and hydrocarbon components, nano titanium oxide and silicon oxide particles formed by dehydrating the polymerized titanium hydroxide and the polymerized silicon hydroxide still have a rod-like basic structure after molding and roasting, and the nano particles are randomly piled to form a framework structure. The carrier has large pore volume, large aperture, high porosity, large outer surface orifice and good pore penetrability, does not inactivate a catalyst due to orifice blockage for macromolecules in particular compared with an orifice of an ink bottle type, and is favorable for increasing the deposition of impurities and prolonging the running period of the catalyst. The carrier can be used for catalytic reaction containing macromolecular reactants or products.

The invention relates to a low-temperature preparation method of a copper sulfide (CuS)/titanium oxide (TiO2) hetero-junction photocatalyst. The method comprises the steps of (1) preparing titanium hydroxide (Ti(OH)4) by using an inorganic salt or an organic salt of titanium as a precursor and adopting a precipitation method or a sol-gel method; (2) roasting Ti(OH)4 at the temperature of 400-650 DEG C for 2-4h to obtain a TiO2 carrier; (3) dispersing copper powder and sulfur powder into a specific solvent, soaking the TiO2 carrier into the solvent, performing magnetic stirring, and heating for 4-24h in a water bath of 40-60 DEG C, wherein CuS generated by the copper powder and the sulfur powder can be loaded to the TiO2 carrier in the process; and (4) cooling the CuS/TiO2 sample to room temperature, and filtering, washing and drying the sample to obtain the CuS/TiO2 hetero-junction photocatalyst.

The invention discloses a method for preparing anatase titanium dioxide sol used for solar batteries. The method comprises the following steps of: performing coprecipitation titration of a titanium source and reaction solution to obtain a white precipitate of titanium hydroxide, dissolving the precipitate in a molar ratio of Ti4<+> to organic acid to hydrogen peroxide of 1:2:2-1:10:10, adjusting a pH value to 7.5, and standing the mixed solution stand for 12 hours to obtain a precursor of titanium dioxide sol; and performing hydrothermal treatment of the precursor of titanium dioxide sol at the temperature of between 70 and 250 DEG C to obtain the yellow anatase titanium dioxide sol. The anatase titanium dioxide sol used for dye-sensitized solar batteries undergoes spin coating or spray coating to form a film which is the titanium dioxide dense film used for high-performance dye-sensitized solar batteries, the bonding degree between the titanium dioxide film and the matrix is improved, the contact between the electrolyte and an light anode can be effectively avoided, so that the electron recombination is lowered, the performance of the battery is greatly improved, and the industrialization of the dye-sensitized solar battery industry is pushed forward.

The invention discloses a method for preparing modified glass microspheres, which comprises the steps of: firstly, coprecipitating a titanium source and a basic hydrolysis reaction solution in water, reacting to obtain a white titanium hydroxide deposit; obtaining a titanium dioxide sol precursor after carrying out washing, peptizing and aging; then carrying out hydro-thermal treatment to obtain anatase phase titanium dioxide sol; mixing the anatase phase titanium dioxide sol with glass microspheres; mill-grinding, and cooling after thermal treatment to obtain the titanium dioxide modified glass microspheres for light scattering of a dye sensitization solar battery. The finished glass microsphere product prepared by using the method for preparing the modified glass microsphere is wrapped with well-crystallized anatase phase titanium dioxide particles on the surface; and the mill-ground glass microspheres have irregular shapes, and have maximum particle diameter of about 400nm and minimum particle diameter of about 200nm, which ensures the compactness of the glass microspheres subjected to film formation.

The invention relates to a medical prosthetic device comprising a metal material, such as titanium or an alloy thereof, where the surface parts of the metal material are coated with a layer of a corresponding hydroxide material, such as titanium hydroxide. Preferably, the hydroxide layer comprises one or more biomolecule substances associated therewith. The invention also relates to an electrolytic process for the preparation of a medical prosthetic device.

The invention discloses a method for preparing calcium titanate nanoparticles. The method comprises the following steps of: adding a mineralizing agent, namely potassium hydroxide, with proper concentration, into hydrothermal reaction materials, namely titanium hydroxide coprecipitate and deionized water solution of calcium nitrate; introducing solution obtained by hydrothermally decomposing glucose into a hydrothermal system to influence nucleation and control the particle size of products; and synthesizing the calcium titanate nanoparticles of which the diameter is 30 to 60nm by hydrothermal reaction. The process is simple and is easy to control; the method is environment-friendly and low in cost; and the products are easy to produce.

The invention discloses a denitration catalyst and a preparation method thereof. The preparation method comprises the following steps: preparing a precipitate mixture of titanium hydroxide and aluminium hydroxide; drying and roasting the precipitate mixture to obtain TiO2-Al2O3 compound oxide carrier powder; extruding, forming, sizing and drying the TiO2-Al2O3 compound oxide carrier powder, activated carbon powder, enamelled powder and an adhesive to obtain an activated carbon/TiO2-Al2O3 compound catalyst; dissolving ammonium metatungstate and ammonium metavanadate in oxalic acid to obtain first impregnation liquid; impregnating the activated carbon/TiO2-Al2O3 compound catalyst in the first impregnation liquid to obtain a V2O5-WO3/activated carbon/TiO2-Al2O3 compound catalyst; preparing second impregnation liquid; and impregnating the V2O5-WO3/activated carbon/TiO2-Al2O3 compound catalyst in second impregnation liquid to obtain the denitration catalyst. The denitration catalyst prepared by the method disclosed by the invention has relatively high denitration catalytic activity, is high in wear resistance and acid resistance and wide in active temperature region, and can recover waste heat while performs denitration treatment on to-be-treated flue gas.

The present invention discloses a method for coating hollow microbeads with titanium-lanthanum oxides. By the method, the surfaces of the hollow microbeads are evenly coated with rutile nano titanium oxide and have a good reflection effect, and the heat-insulation effect of the coating is improved. The method comprises: heating a mixed solution of titanium sulfate solution and lanthanum sulfate solution while stirring to 75-90 DEG C, maintaining the constant temperature and controlling the stirring speed at 500-800 rpm, and simultaneously adding soaked hollow microbeads to the mixed solution at a constant speed within 60-90 minutes; adjusting the pH value of the system to 8.0-9.5, then stirring the system at the stirring speed of 30-80 rpm for 40-90 minutes, and simultaneously ultrasonically vibrating the system; then filtering and washing until the material has a solid content of more than 40%; then carrying out microwave treatment for 15-25 minutes until the material has a solid content of more than 90% and fluffy oxidized surfaces; and heating the material in a roaster to 300 DEG C, maintaining for 1-3 hours, then heating to 900 DEG C and maintaining for 30-60 minutes so that titanium hydroxide coated on the surface of the hollow microbeads is transformed into rutile titanium dioxide.

The invention relates to a medical prosthetic device having a metal material, such as titanium or an alloy thereof, where the surface parts of the metal material are coated with a layer of a corresponding hydroxide material, such as titanium hydroxide. Preferably, the hydroxide layer includes one or more biomolecule substances associated therewith. The invention also relates to an electrolytic process for the preparation of a medical prosthetic device.

A process for preparing titanium oxide includes such steps as converting the Ti-contained aqueous solution to titanium hydroxide, adding hydrogen peroxide and generating thermal reaction to obtain the solution of anatase-type titanium oxide solution with complex group, and drying. It can be used to prepare coating solution, while has high adhesion and no corrosion to substrate.

The invention discloses a method for preparing a nano-crystalline photocatalysis titanium dioxide fiber, which comprises the following steps of: synthesizing a poly-titanium sol spinning fluid by using titanium hydroxide, aqueous solution of hydrogen peroxide, organic acid and a sol as raw materials; performing centrifugal thread throwing to obtain a poly-titanium gelatinous fiber; and performing steam activation heat treatment on the poly-titanium gelatinous fiber to obtain the nano-crystalline photocatalysis titanium dioxide fiber. Compared with the prior art, the preparation of the spinning fluid is innovative and has obvious advantages, the titanium hydroxide, the hydrogen peroxide, the organic acid and the sol are used as the raw materials, and the poly-titanium sol spinning fluid can be prepared through direct reaction and concentration, so a synthetic process is greatly simplified without rigorous reaction conditions and complicated reaction equipment, and no pollution problems exist.

The invention provides a composition for metallic surface treatment which is characterized by comprising following components (A) to (C): (A) an aqueous solution obtained by mixing at least one titanium compound selecting from water weakened titanium compound, the condensate of water weakened titanium compound, titanium hydroxide and the condensate of titanium hydroxide with hydrogen peroxide solution(A2), or vanadate peroxide solution (A2); (B) organic phosphate compound; and (C) condensation product of amino silane (c1) and multi-silyl-functional silanes (c2). The composition for metallic surface treatment can form surface treatment envelope which is excellent for storage and has excellent corrosion resistance performance. The adhesive property of a film subjected to a post coating process is good.