96results about "Titanium suboxides" patented technology

Nanomaterials of the JT phase of the titanium oxide TiO_2-x, where 0≦x≦1 having as a building block a crystalline structure with an orthorhombic symmetry and described by at least one of the space groups 59 Pmmn, 63 Amma, 71 Immm or 63 Bmmb. These nanomaterials are in the form of nanofibers, nanowires, nanorods, nanoscrolls and/or nanotubes. The nanomaterials are obtained from a hydrogen titanate and/or a mixed sodium and hydrogen titanate precursor compound that is isostructural to the JT crystalline structure. The titanates are the hydrogenated, the protonated, the hydrated and/or the alkalinized phases of the JT crystalline phase that are obtained from titanium compounds such as titanium oxide with an anatase crystalline structure, amorphous titanium oxide, and titanium oxide with a rutile crystalline structure, and/or directly from the rutile mineral and/or from ilmenite. The titanates are submitted to dynamic thermal treatment in an inert, oxidizing or reducing atmosphere to produce the JT phase of the TiO_2-x, where 0≦x≦1 with an orthorhombic structure.

The invention is directed to a catalyst having activity under the irradiation of a visible light, the catalyst being an oxide semiconductor such as an anatase type titanium dioxide, having stable oxygen defects. A method for producing a catalyst having activity under the irradiation of a visible light which comprises treating an oxide semiconductor with hydrogen plasma or with a plasma of a rare gas element, comprising performing the treatment in a state substantially free from the intrusion of air into the treatment system is also provided. An article comprising a base material having the catalyst above provided on the surface thereof and a method for decomposing a substance, comprising bringing an object to be decomposed into contact with the catalyst above under the irradiation of a light containing at least a visible radiation are disclosed. A novel photocatalyst which enables use of a visible radiation is provided, as well as a method utilizing the photocatalyst for removing various substances containing an organic matter or bacteria by photodecomposition.

The invention relates to nanomaterials and assemblies including, a micrometer-scale spherical aggregate comprising: a plurality of one-dimensional nanostructures comprising titanium and oxygen, wherein the one-dimensional nanostructures radiate from a hollow central core thereby forming a spherical aggregate.

Highly reflective interference effect pigments with dark absorption color are obtained by reducing platy titanium dioxide. The present effect pigments may be used in cosmetics, plastics, inks, and coatings including solvent and water borne automotive paint systems.

According to example embodiments, a transparent electrically conductive film including a compound that has a two-dimensional electron gas layer, and has a product of an absorption coefficient (α) for light having a wavelength of about 550 nm at 25° C. and a resistivity value (ρ) thereof of less than or equal to about 30 Ω/sq is provided. The electrically conductive film may be a layered crystal structure of the compound.

The invention relates to core-shell structure titanium sub-oxide and a controllable preparation method thereof. The titanium sub-dioxide has a core shell structure, and the surface is coated with an amorphous titanium sub-oxide layer. The titanium sub-dioxide has the special core shell structure, and the surface of the special core shell structure is coated with an amorphous titanium sub-oxide layer, so that the core-shell structure titanium sub-oxide has unique electrical and optical properties of the titanium sub-oxide, excellent thermal stability and super-high conductivity, also has small particle size, high specific surface area, controllable micro structure units and other good performances, and can be used for catalysts and catalyst carriers, high conductive materials and preparation of effective rechargeable batteries and the like.

High purity refractory metals, valve metals, refractory metal oxides, valve metal oxides, or alloys thereof suitable for a variety of electrical, optical and mill product/fabricated parts usages are produced from their respective oxides by metalothermic reduction of a solid or liquid form of such oxide using a reducing agent that establishes (after ignition) a highly exothermic reaction, the reaction preferably taking place in a continuously or step-wise moving oxide such as gravity fall with metal retrievable at the bottom and an oxide of the reducing agent being removable as a gas or in other convenient form and unreacted reducing agent derivatives being removable by leaching or like process.

The present invention relates to a method of reducing a metal oxide comprising the steps of preparing a mixture by mixing a metal oxide and a metal hydride (step 1) and reducing the mixture by heat treatment (step 2) and a method of producing a photocatalyst using the same, and The method of reducing a metal oxide of the present invention can easily reduce such metal oxides as TiO₂, ZrO₂, V₂O₃, and Fe₂O₃.

The present invention relates to high-purity titanium monoxide powder (TiO) produced by a process of combining a mixture of titanium suboxides and titanium metal powder or granules; reacting the mixture at a temperature above about 1200° C.; and fragmenting the body to form TiO particles suitable for application as e.g., capacitors. The TiO product is unusually pure in composition and crystallography, highly dense, and can be used for capacitors and for other electronic applications. The method of production of the TiO is robust, does not require high-purity feedstock, and can reclaim value from waste streams associated with the processing of TiO electronic components.

The invention relates to a Ti4O7 nano material as well as a preparation method thereof and use thereof. The preparation method of the Ti4O7 nano material comprises the following steps: adopting nano titanium dioxide as a titanium source, adopting an inorganic carbon source and an inorganic carbon source as a reducing agent, and grinding and performing thermal treatment to obtain the Ti4O7 nano material. In a preparation process, the inorganic carbon source and the organic carbon source cooperatively act to realize controllable preparation of particle diameters and purity of product nano particles. The preparation method is simple in process flow, and is relatively low in cost; and the obtained Ti4O7 nano material is high in purity and conductivity, is small in particle diameter, and can beused as a catalysis material and an electrode material.

A titanium oxide-based supercapacitor electrode material and a method of manufacturing same. A reactive substance of the titanium oxide-based supercapacitor electrode material is a conductive titanium oxide. The conductive titanium oxide is a sub-stoichiometric titanium oxide, reduced titanium dioxide, or doped reduced titanium dioxide obtained by further doping an element in reduced titanium dioxide. The titanium oxide-based supercapacitor electrode material has a carrier concentration greater than 10¹⁸ cm⁻³, and the titanium oxide-based supercapacitor electrode material has a specific capacitance 20 F/g to 1,740 F/g at a charge/discharge current of 1 A/g.

The invention relates to the technical field of inorganic material preparation process, in particular to a preparation method of Magneli phase low valence titanium oxide. The method comprises the steps of uniformly mixing titanium pigment, aluminum powder and absolute ethanol in the mass and volume ratio of 0.4-0.8g: 1g: 0.5-0.8mL, adding the uniformly mixed material into a crucible to compaction, melting boron oxide with low melting point, using the boron oxide to cover the material surface, putting the crucible on an electric heating furnace for roasting to obtain the low valence titanium oxide. Because the Magneli phase low valence titanium oxide is stable in chemical property, the finally obtained material is leached in acid to obtain the pure Magneli phase (TinO2n-1) low valence titanium oxide. According to the Magneli phase low valence titanium oxide, the preparation in relatively low temperature, normal pressure and relatively short period of time is achieved, the cost is greatly reduced, and the method is beneficial to achieve the scale production and preparation.

The invention discloses a method for preparing spherical TinO(2n-1) from plasma and belongs to the technical field of preparation of powdery materials. According to the method, TiO2 powder is conveyed into a plasma flame area in a high-temperature plasma reactor through carrier gas, loses oxygen in the carrier gas atmosphere and is settled in a condensing area, and spherical TinO(2n-1) powder is obtained. Rapid preparation of TinO(2n-1) can be realized with the method, the technical process is short, and continuous production can be realized.

The invention relates to the technical field of synthesis of photocatalysts and particularly relates to a titanium dioxide surface modifying method. A titanium dioxide powder is dispersed in an electrolyte, a cathode glow discharge plasma is produced in the electrolyte and electrolyzes water to produce a hydrogen atmosphere, the titanium dioxide is subjected to hydrogenation reduction in the hydrogen atmosphere, and the titanium oxide with a core-shell structure is obtained after finishing discharging. The cathode glow discharge plasma is used for rapidly preparing the visible-light response reductive titanium oxide in one step, no chemical reducing agent is added in the preparation process, and the method is a green environmentally-friendly preparation technique; the preparation process is simple, only the electric energy and a small quantity of liquid are consumed, the raw material of the titanium dioxide is not self-made, the surface of the titanium dioxide is directly modified, andthe mass production is implemented conveniently. By using the titanium dioxide surface modifying method, the titanium oxide is not required to be reduced at the high temperature in the hydrogen atmosphere, so that the safety of the preparation process is improved, and the industrial production is facilitated.

The invention relates to a method for controllably preparing oxide powder of titanium. The method comprises the steps of weighing titanium powder and perchlorate, mixing the titanium powder and the perchlorate, then, putting the mixture into a vacuum-tight quartz tube, and carrying out a reaction for 10 to 30 hours at the high temperature of 400 DEG C to 1,100 DEG C, thereby obtaining the oxide powder of titanium. According to the method, a halide is produced during the reaction and can serve as a cosolvent of the reaction; and due to the addition of the halide cosolvent, the diffusion is accelerated, the reaction time is greatly shortened, and the crystallinity and purity of oxides of transition-metal titanium are guaranteed.

The invention relates to the field of inorganic composite materials and in particular relates to a method for preparing a graphite-titanium low-valence oxide composite material. The preparation method disclosed by the invention mainly comprises the following steps: preparing materials, performing compression molding, performing high-temperature reduction, and performing ball-milling, thereby obtaining the graphite-titanium low-valence oxide (titanium black) composite material. According to the composite powder prepared by the invention, TiO2 (or metatitanic acid) and graphite are mainly taken as raw materials, a carbon thermal reduction method is adopted, and the graphite-titanium low-valence oxide (titanium black) composite material is prepared in an air atmosphere. The method has the characteristics that the process is simple, the requirements on production equipment and production environment are low, the raw materials are low in price and huge in storage capacity, and the process method is convenient for large-scale industrial production.