Titanium oxide particles of the present invention include octahedral-shaped particles, in which each particle of the octahedral-shaped particles has line segments each of which connects two apexes which face each other and has a maximum value of the line segments, an average value of the maximum values is 300 nm or more and 1,000 nm or less, and a value (the average value of the maximum values/BET-converted average particle diameter) obtained by dividing the average value of the maximum values of the line segments by an average particle diameter converted from a BET specific surface area is 1.0 or more and 2.5 or less.

Titanium dioxide/sulfonated graphene oxide/silver nanoparticle composite membrane and its preparation method and application are disclosed. Mixing graphene oxide, sodium chloroethanesulfonate, and sodium hydroxide uniformly in the water, and then adding concentrated nitric acid to obtain sulfonated graphene oxide; mixing the aqueous solution of said sulfonated graphene oxide with the aqueous solution of silver nitrate, stirring in the dark, then adding ascorbic acid, and continuing to stir to obtain a silver nanoparticle/sulfonated graphene oxide composite material; dispersing said silver nanoparticle/sulfonated graphene oxide composite material in water, and then deposited on said titanium dioxide nanorods arrays by vacuum deposition, and vacuum dried to obtain titanium dioxide/sulfonated graphene oxide/silver nanoparticle composite membrane. The membrane possessed photocatalytic effect under UV light and special wettability: super-hydrophobic oil under water/super-hydrophobic under oil, which could in situ separation and degradation of oil/water emulsion.

Disclosed herein are a microchip provided with a titanium oxide film between a glass substrate and a metal thin film; and a method for forming the metal thin film and the titanium oxide film on the glass substrate of the microchip. The microchip has a second microchip substrate that has the metal thin film inside a channel, and the titanium oxide film, which has a low extinction coefficient, is provided as a buffer layer between the substrate and the metal thin film such as a gold film.

The present invention relates to a method for directly synthesizing titanium dioxide from a titanium-rich organic phase prepared from ilmenite, and more particularly to a method in which a titanium-rich acidolysis solution is obtained by an efficient ore dissolving technology, titanium ions are transferred to the organic phase by means of an effective titanium extractant to obtain a high-purity and titanium-rich organic phase, and then the titanium dioxide is directly synthesized in the organic phase. With this method, the dissolution rate of ilmenite can be effectively improved, the process flow is shortened and production costs are reduced, and titanium dioxide with high yield and high quality is obtained.

Titanium oxide particles, a method for their production, and a slurry, dispersion, composition and dielectric starting material that include the titanium oxide particles. The D90 (LD)/D50 (LD) ratio of the titanium oxide particles is greater than 1.0 and 2.0 or lower, and the particle concentration of coarse particles having a size exceeding 16 times the D50 (SEM)(16? the D50 (SEM)), for primary particles, is 20 ppm or lower. For their production, a source gas and oxidizing gas are introduced into a reaction tube and reacted, with a purge medium blowing outlet being provided on the inner wall of the reaction tube, and the blowout angle and the blowout flow velocity (B) of the purge medium from the inner wall of the reaction tube being such that the purge medium is introduced in a swirling manner along the inner wall of the reaction tube.

Rutile titanium oxide particles, in which Fe and Zr are dissolved to form a solid solution, have an interplanar spacing of a (110) plane obtained by X-ray diffraction measurement of 0.3250 nm or more and an average particle size in a range from 5 nm to 50 nm.

The present invention produces titanium oxide particles which have a sufficiently small average aggregate particle diameter (D50), while containing much less amorphous components. According to the present invention, a solution containing titanium (oxy)chloride and a carboxylic acid and/or a salt thereof is heated at a temperature that is not less than 95? C. but not more than the boiling point of the solution (first hydrolysis step); and a solution, which is obtained by mixing a solution that contains a product of the first hydrolysis step with titanium (oxy)chloride and a carboxylic acid and/or a salt thereof, is heated at a temperature that is not less than 95? C. but not more than the boiling point of the solution (second hydrolysis step). In addition, the present invention provides titanium oxide particles which have an average aggregate particle diameter (D50) of 15 nm to 200 nm, while having a content of amorphous components of 7% by mass or less.

The present invention relates to particles having a rutile-type crystal structure. The particles have a crystallite diameter of 7 nm or more and contains 90% by weight or more of titanium oxide in terms of TiO.sub.2 and 0.2 to 10% by weight of tin oxide in terms of SnO.sub.2. Such particles are easily dispersed in a solvent and have a high refractive index.

Provided are a self-cleaning coating, a self-cleaning fiber, a self-cleaning carpet and uses thereof. The self-cleaning coating is provided with a porous structure where pores communicate with one another; the volume of the pores comprised in the coating makes up 20%-98% of the total volume of the coating; and the pore diameter of the pores in the porous structure is between 0.5 nm-50 nm. The self-cleaning coating is mainly prepared from host materials; the host materials are one or more of titanium oxide, zirconia, titanium nitride, silicon oxide, tungsten oxide, g-C.sub.3N.sub.4 semiconducting polymer, perovskite semiconductor, silver, iron, gold, aluminum, copper, zinc, tin and platinum.

Provided is a method of producing a titanium oxide in which titanium tetrachloride is hydrolyzed using a liquid-phase method. This method includes a step of adding an aqueous titanium tetrachloride solution to warm water having a higher temperature than the aqueous titanium rachloride solution, in which in the step, the temperature of the warm water is 30 C. to 95 C. and the aqueous titanium tetrachloride solution is added to the warm water such that an increase rate of titanium atomic concentration in the warm water is 0.25 mmol/L/min to 5.0 mmol/L/min, and a titanium atomic concentration in the warm water after the step is 280 mmol/L or lower.