146 results about "Tio2 particle" patented technology

The invention relates to a preparation method of a TiO2-coated SiO2 material, and relates to the technical field of nano materials, and the preparation method is characterized by comprising the following steps: modifying titanium dioxide nanoparticles by using CTAB (Cetyltrimethyl Ammonium Bromide), then adding TEOS (Tetraethyl Orthosilicate) into a mixture to complete a silicon dioxide coating reaction, and then calcining to obtain a densified TiO2-coated SiO2 material; cTAB (cetyltrimethylammonium bromide) is used as a template agent and a surfactant to help to form a uniform SiO2 coating layer, the dispersity of TiO2 particles in a reaction medium is improved, the agglomeration of the TiO2 particles is prevented, and the SiO2 coating layer enhances the absorption of visible light, increases the specific surface area of the material and provides more active sites, so that the photocatalytic efficiency of the material is improved.

The invention provides a high-temperature-resistant and corrosion-resistant ammonia water nozzle coating and a preparation method thereof, and belongs to the field of coatings. The ammonia water nozzle coating is composed of a self-repairing metal ceramic bonding layer, an organic-inorganic hybrid corrosion-resistant layer and a functional surface layer which are sequentially arranged in a stacked mode. A coating of the self-repairing metal ceramic bonding layer is composed of the following components of 90-99 parts of NiCrAlY alloy and 1-8 parts of self-repairing microcapsules. A coating of the organic-inorganic hybrid corrosion-resistant layer is prepared from the following components: 40 to 60 parts of fluorinated polyurethane prepolymer, 20 to 40 parts of silicon-aluminum sol, 1 to 8 parts of disulfide bond modified epoxy resin and 10 to 20 parts of magnesium-aluminum hydrotalcite; the coating of the functionalized surface layer is prepared from the following components: 20 to 30 parts of stearic acid modified TiO2 particles, 60 to 80 parts of waterborne polyurethane and 2 to 7 parts of ionic liquid modified SiO2 nanoparticles. The corrosion resistance, the high temperature resistance and the self-repairing capacity of the ammonia water nozzle are improved at the same time.

The invention belongs to the technical field of airflow film preparation, and particularly relates to a surface-modified sunlight response photocatalytic airflow film and a preparation method thereof. When the Fe-TiO2-g-C3N4 surface modified sunlight response photocatalytic air flow film is prepared, firstly, a Fe-TiO2-g-C3N4 photocatalytic material is obtained through calcination in a muffle furnace, then a Fe-TiO2-g-C3N4 suspension is obtained through ultrasonic treatment, the suspension is vacuumized and filtered to the surface of the air flow film, and the Fe-TiO2-g-C3N4 surface modified sunlight response photocatalytic air flow film is obtained. The Fe-TiO2-g-C3N4 surface modified sunlight response photocatalytic air flow film is prepared through interfacial polymerization. The airflow film prepared by the invention widens the response of TiO2 in a sunlight area, reduces the compounding probability of electron-hole pairs, and improves the photocatalytic performance of the material. Meanwhile, aggregation of TiO2 particles is inhibited by adding Fe < 3 + >, the photocatalytic reaction rate is increased, and the photocatalytic membrane has greater advantages in further development and application in the future.

The invention discloses a transparent heat insulation coating and a preparation method thereof. The coating takes magnesium oxyfluoride Mg (OF) x as a matrix, and ATO / TiO2 composite nanoparticles with hollow sphere structures are uniformly dispersed in the matrix; the ATO / TiO2 / Mg (OF) x transparent heat insulation coating is formed. Magnesium acetate, trifluoroacetic acid and deionized water react to form Mg (OF) x sol which is stable in performance and good in film-forming property, nanometer hollow spheres ATO / TiO2 are prepared through a hydrothermal method and a template-free method, the Mg (OF) x sol serves as a matrix, ATO / TiO2 is dispersed in the matrix, and the coating is prepared. The added ATO / TiO2 particles have good scattering performance and thermal stability, the dispersity is improved, the transparency of the heat-insulating coating is improved, and good heat-insulating performance can be achieved under the condition that a small amount of heat-insulating filler is applied.

The invention discloses a preparation method and application of a mesoporous TiO2 / CNQDs-OH composite photocatalyst, and belongs to the technical field of nano photocatalytic materials. The preparation method comprises the following steps: firstly, preparing TiO2 particles with a uniform mesoporous structure by adopting a crystal-driven single gel process assembly method, and then directly mixing a carbon nitride precursor, hydroxyl-rich saccharides and mesoporous TiO2 according to a ratio and firing to obtain the mesoporous TiO2 / CNQDs-OH composite photocatalyst. The mesoporous TiO2 / CNQDs-OH composite photocatalyst has high specific surface area, high hydrophilicity and strong interfacial force, realizes high carrier transfer and separation efficiency without depending on noble metals, and is a stable, efficient, green and environment-friendly photocatalytic system. The preparation method has the advantages of prominent economy, simple preparation process, environmental protection, good photocatalytic performance and the like, and is easy for large-scale production.

An all-solid-state battery having excellent output characteristics, and a negative electrode for an all-solid-state battery that can be used in the all-solid-state battery are provided. A negative electrode for an all-solid-state battery according to the present invention includes a molded body made of a negative-electrode mixture that contains a negative-electrode active material, a solid electrolyte, and a conductive assistant, and lithium titanium oxide particles in which a ratio Dp / D50 of a primary particle diameter Dp to a particle diameter D50 is greater than 0.6 and a specific surface area is 2 m2 / g or more are contained as the negative-electrode active material. Also, an all-solid-state battery according to the present invention includes a positive electrode, a negative electrode, and a solid electrolyte layer located between the positive electrode and the negative electrode, and the negative electrode for an all-solid-state battery according to the present invention is used as the negative electrode.

The invention relates to a preparation method of a high-content titanium dioxide fiber and hidden sweat stain knitted fabric. The preparation method comprises the following steps: firstly, carrying out primary hydrophobization treatment on TiO2 particles through silane coupling KH-550; a block copolymer PEO-PPO-PEO dispersing agent is introduced, so that agglomeration of the powder is inhibited; directly introducing the TiO2 subjected to surface modification treatment into a polyester polymerization system to prepare polyester with ultrahigh TiO2 content; pOY (polyester pre-oriented yarn) is spun by polyester, and 50D / 36F DTY and 75D / 36F DTY with ultrahigh TiO2 content are prepared by elasticizing; two types of tuck stitch fabrics and one type of single jersey stitch fabrics are developed. The super-high TiO2 + tuck stitch is adopted, the high refractive index (2.4-2.9) of nano TiO2 can scatter visible light, reduce the optical contrast ratio of sweat stains and a fiber matrix and ensure smooth air circulation of the fabric, so that the fabric has excellent moisture absorption and quick drying performance, moisture can be quickly evaporated, the air permeability and wicking effect of the fabric are improved, and the fabric has good moisture absorption and quick drying effects. Water vapor on the inner side of the fabric can be rapidly conducted to the outer side of the fabric, and a good sweat stain hiding effect is achieved.

The invention discloses a single-layer Janus fiber membrane with pore and wettability double gradients and a one-step electrospinning preparation method of the single-layer Janus fiber membrane, and belongs to the technical field of electrostatic spinning functional fiber materials. According to the method disclosed by the invention, polyacrylonitrile (PAN) has weak hydrophilicity, and hydrophobic modification and hydrophilic modification of the PAN fiber membrane can be realized by respectively adding fluorinated titanium dioxide (F-TiO2) particles and tannic acid (TA); gradient regulation and control of pores are realized by regulating and controlling the concentration of the PAN spinning solution. The method comprises the following steps: S1, mixing F-TiO2 particles with PAN to obtain a spinning solution A; s2, mixing TA and PAN to obtain a spinning solution B; s3, the spinning solution A and the spinning solution B are sequentially sucked into the same injector, and a pre-spinning solution C is obtained; and S4, preparing the single-layer fiber membrane through electrostatic spinning. The fiber membrane has a pore / wettability double-gradient structure, shows excellent one-way moisture conduction performance, and has wide application prospects in the fields of personal protection masks, outdoor sportswear and the like.

The present invention belongs to the field of photocatalytic degradation of polluted wastewater and relates to a method for preparing a multi-scale titanium dioxide fiber / carbon nanotube film composite photocatalyst. The method comprises the following steps: while drawing a carbon nanotube array, preparing TiO2 fibers on its surface by microemulsion electrospinning to obtain the multi-scale TiO2 fiber / carbon nanotube film. The multi-scale TiO2 fiber / carbon nanotube film provided by the present invention not only solves the problem of poor mechanical properties of carbon nanotube (CNTs) membranes prepared by methods such as filtration by drawing multi-walled carbon nanotubes (MWCNTs), but also overcomes the problems of TiO2 fibers being brittle and difficult to recycle by loading TiO2 fibers on the CNTs membrane. In addition, the method of preparing TiO2 fibers by electrospinning replaces the method of depositing TiO2 particles on the CNTs membrane, solving the problems of easy shedding of TiO2 particles, high preparation cost, and complex process.

A high infrared reflectance Cu-TiO2 composite coating and its preparation method are disclosed. The method involves mechanically ball-milling Cu powder and TiO2 powder, wherein the TiO2 mass percentage is 10%–20%. The mixed powder is then deposited onto the substrate surface using cold spraying, preferably with a Ti buffer layer. This invention utilizes the dispersion strengthening, optical synergistic enhancement, and chemical barrier effect of TiO2 particles in the Cu matrix to improve the coating's hardness and wear resistance while simultaneously increasing infrared reflectance. Experiments show that when Cu:TiO2 = 85:15, the coating achieves an absolute infrared reflectance of 94.02% in the 1900–2300 nm wavelength band, higher than pure Cu coatings and existing cold-sprayed Ag and Al coatings. Furthermore, the coating is dense and oxidation-free. This invention features a simple process and low cost, making it suitable for applications such as solar collectors, infrared reflectors, and optical devices.

To provide: an aqueous dispersion of fine inorganic powder that exhibits excellent dispersibility in an aqueous medium and has high dispersion stability; and a cosmetic preparation containing the aqueous dispersion, which is highly stable and excellent in transparency, usability (non-stickiness), and water resistance.SOLUTION: An aqueous dispersion contains: (a) 10-70 mass% of hydrophobized titanium oxide fine particles which have a number average primary particle diameter of 8-200 nm as determined by an image analysis method of a transmission electron micrograph and are obtained by hydrophobizing titanium oxide particles with silicone; (b) 1.0-30 mass% of an aqueous component which has two or more alcoholic hydroxyl groups; (c) 1.0-20 mass% of a polyglycerol-modified silicone which can be dissolved in the component (b); and (d) 8-82 mass% of water.SELECTED DRAWING: None

The present invention relates to the use of TiO2 particles supporting a metal and / or a metal oxide for obtaining alkenes by photocatalysis. The present invention also relates to a method for obtaining alkanes by photocatalysis of a carboxylic acid and / or an alcohol in the presence of a catalyst based on TiO2 particles supporting a metal and / or a metal oxide.

The invention relates to the technical field of photocatalytic ozonation coal chemical industry wastewater treatment, in particular to a preparation method and application of a soapstone / TiO2 particle composite catalyst with a mesoporous-macroporous two-stage aperture structure, and the method comprises the following steps: adding an ethanol solution of butyl titanate into a viscous turbid liquid of alginate and soapstone, uniformly mixing, and then adding an ethanol solution of titanium dioxide into the viscous turbid liquid of alginate and soapstone; a catalyst precursor sol solution is obtained; dropwise adding the catalyst precursor sol solution into a polyvalent metal salt solution to prepare spherical gel of soapstone and butyl titanate sol; and carrying out acid leaching, drying and calcining on the spherical gel of the soapstone and the butyl titanate sol to obtain the soapstone / TiO2 particle composite catalyst of which the surface is of a mesoporous-macroporous two-stage aperture structure and the interior is honeycomb-shaped. The soapstone and the butyl titanate sol are compounded by adopting an alginate template method, a mesoporous-macroporous hierarchical structure is formed on the surface of the catalyst, a honeycomb shape is formed inside the catalyst, the porosity and the catalytic activity of the catalyst are improved, and the catalyst still keeps relatively high catalytic activity and physical and chemical stability after being recycled for multiple times, so that the catalyst has a good application prospect. The method is suitable for fields of environmental protection and sewage treatment.

A TiO2 particle packed DBD-based SF6 degradation performance evaluation method, comprising: selecting nano TiO2 particles as a packing medium, researching a SF6 plasma discharge decomposition process on the basis of DBD, using a test area to offline analyze the concentration of SF6, and measuring discharge power by means of an oscilloscope; on the basis of DBD plasma degradation technology, evaluating the degradation effect of DBD on SF6; and, by means of a degradation product measured by a GC-MS, performing performance evaluation on the catalytic effect of the TiO2 packing medium.

To provide titanium oxide particles with few coarse particles and excellent homogeneity and dispersibility, a method for their production, and a slurry, a dispersion, a composition and a dielectric starting material that comprise the titanium oxide particles.SOLUTION: The titanium oxide particles are such that D90 (LD) / D50 (LD) of the titanium oxide particles as measured by laser diffraction / scattering analysis is greater than 1.0 and less than or equal to 2.0, and the concentration of coarse particles whose primary particle size exceeds 16 times D50 (SEM) of primary particles as observed under a field emission scanning electron microscope is 20 ppm or less (based on the number of particles). For their production, a source gas and oxidizing gas are introduced into a reaction tube and reacted, where a blowing outlet of a purge medium is provided on the inner wall of the reaction tube, and where the blowout angle of the purge medium and the blowout flow velocity (B) of the purge medium from the inner wall of the reaction tube are introduced such that the purge medium swirls along the inner wall of the reaction tube.SELECTED DRAWING: Figure 1

This invention relates to the field of nickel electrode paste preparation technology, and discloses an ultrafine roller-printed nickel paste for ultra-high capacitance MLCCs and its preparation method. The nickel paste includes nickel powder, Ni3Sn-coated nickel powder, diffusion barrier phase, resin, solvent, dispersant, and rheology modifier. The Ni3Sn-coated nickel powder is obtained by chemical plating, where Sn is bonded to Ni in the form of an intermetallic compound. The diffusion barrier phase is selected from nano-ZrO2 or TiO2 particles. After pre-dispersing each solid component with a portion of the dispersant and solvent, the mixture is ground and dispersed using a gradient grinding process, then mixed with an organic carrier to form a paste. After vacuum degassing and filtration, the nickel paste is obtained. This invention uses Ni3Sn-coated nickel powder to replace elemental Sn powder, inhibiting the formation of a dense SnO2 passivation layer. Combined with the blocking effect of the diffusion barrier phase at the grain boundaries and the protection of the coating layer integrity by the gradient grinding process, this invention solves the problem of long-term reliability degradation of MLCCs caused by Sn storage.

An air purifying coating system and method for making same having a carrier agent and a diatomic frustule titanium dioxide particle dispersion combined with the carrier agent. The coating system may include 70-99.9 weight percent carrier agent and 0.1-30 weight percent diatomic frustule titanium dioxide particle dispersion. The carrier agent of the coating system may include a cleaning agent or a polishing agent. The diatomic frustule titanium dioxide particle dispersion may include 1-35 micron particle size diatomic frustule titanium dioxide particles combined with water and dispersion additive. The dispersion may further include an anti-settling additive, a rheology additive, and / or a defoamer.

The application discloses a display screen functional film and a preparation method and application thereof, and belongs to the technical field of functional film materials. The method comprises the following steps: S1, SiO2 nanoparticles, ethanol, acetonitrile, polyvinylpyrrolidone and deionized water are mixed, and ultrasonic dispersion is carried out to obtain a dispersion liquid; tetrabutyl titanate is slowly added into the dispersion liquid, heating and stirring are carried out, and washing, drying and annealing are carried out to obtain SiO2@TiO2 particles; the SiO2@TiO2 particles, an epoxy-containing silane coupling agent and methanol are mixed, heating and stirring are carried out, and washing, drying and annealing are carried out to obtain modified SiO2@TiO2 particles. S2, the modified SiO2@TiO2 particles, 4,4'-diamino diphenyl sulfone and a leveling agent are dispersed in methyl isobutyl ketone, mixing is carried out, ultrasonic defoaming is carried out, and a coating is obtained; the coating is uniformly coated on an optical film, and the functional film with good light transmission, ultraviolet resistance and hydrophobicity is obtained after temperature rising and drying.

To provide a water-in-oil type emulsion cosmetic composition which has high dispersibility of metal oxide particles in a liquid oil, is less likely to cause caking, and has strong high-temperature stability even when no silicone oil is used or only a small amount of a silicone oil is used.A water-in-oil type emulsion cosmetic composition includes the following components: surface-treated zinc oxide particles, surface-treated titanium oxide particles, polyhydroxystearic acid, polyricinoleic acid polyglycerol ester, an organically modified clay mineral, an aqueous component, and a liquid oil, wherein a content of the polyhydroxystearic acid is less than 1.0 mass %, and a content of the aqueous component is less than 15 mass %.

An inkjet ink containing a white pigment, a block polymer-type resin dispersant, an organic solvent, and water, in which the white pigment is titanium oxide particles in which the surface is treated with alumina, excluding particles in which the surface is treated with an organic compound, silica, zirconia, zinc oxide, or magnesium oxide, and titanium oxide particles in which the surface is treated with alumina and an organic compound.

A silicone coating film provided as a surface layer of an irradiated object exposed to ultraviolet irradiation, includes a silicone rubber as a base material and titanium oxide particles with an average particle size of less than 100 nm. A laminated structure includes a first layer including a silicone rubber as a base material, and a second layer laminated on the first layer, wherein the second layer is the silicone coating film.

An asphalt-based sealcoat composition comprising high levels of titanium oxide particles is provided. In some embodiments, a highly solar reflective asphalt-based sealcoat composition comprising high levels of titanium oxide particles is provided. In some embodiments, an asphalt-based sealcoat composition capable of reducing pollutants comprising high levels of titanium oxide particles is provided. In some embodiments, methods for preparing asphalt-based sealcoat compositions as well as their application to asphalt surfaces is provided.

The invention relates to a super-hydrophilic-antistatic integrated inorganic nano photovoltaic body effect coating as well as a preparation method and application thereof.The coating is prepared from the following raw material components in percentage by mass: 30%-50% of an inorganic nano base material, 15%-25% of composite nanoparticles, 3%-8% of an antistatic agent, 1%-3% of a dispersing agent, 2%-5% of a curing agent and the balance of deionized water; the inorganic nano base material is a compound system of silica sol and aluminum sol, and the mass ratio of the silica sol to the aluminum sol is (3-5): 1; the composite nano particles are a mixture of nano SiO2 particles and nano TiO2 particles, and the mass ratio of the nano SiO2 particles to the nano TiO2 particles is (2-4): 1. The coating not only realizes synergistic improvement of super-hydrophilicity and antistatic performance, but also can adapt to domestic nanoparticles; in the application of high-pollution and low-dip-angle photovoltaic modules, the dust residual rate is smaller than or equal to 5%, the power generation capacity of the modules is increased by larger than or equal to 3%, no yellowing or cracking occurs through 1500h aging tests, and the effective service life is larger than or equal to 6 years.

To provide an insect pest control container which is low cost without an electric power source, is easy to be handled, and can be used at ease.SOLUTION: An insect pest control container 10 includes a container body 1 which can contain water and has insect pest induction color, and an insect pest control material 3 which is disposed to contact with the water within the container body 1 in use, and includes titanium oxide particles and silver particles.SELECTED DRAWING: Figure 1

The invention discloses a solarization-resistant polyester fiber and a preparation method thereof.The solarization-resistant polyester fiber is obtained by finishing polyester fiber through a composite finishing agent, and the composite finishing agent is prepared from, by weight, 0.1-1 part of graphene oxide, 1.75-7.0 parts of composite coating TiO2 particles and 2.5-10 parts of 3-methacrylamide dopamine. And 75 to 300 parts of deionized water. According to the invention, the polyester fiber is modified by adopting the composite finishing agent, and a modified protective film layer is formed on the surface of the polyester fiber, so that the polyester fiber with greatly improved solarization resistance is obtained; through treatment of the composite finishing agent, the anti-ultraviolet performance and the anti-aging performance of the polyester fibers can be remarkably improved, and through the self-repairing performance provided by the formed modified protective film layer, the solarization resistance can be further enhanced.

The application belongs to the field of inorganic functional materials, and particularly relates to a TiO2 film with lotus leaf surface structure and a preparation method thereof. The TiO2 film with lotus leaf surface structure is composed of dispersed sub-micron-sized TiO2 microspheres and a continuous film matrix, and the dispersed TiO2 microspheres are locally inlaid in the film matrix; the TiO2 microspheres are composed of nano-sized TiO2 particles. The TiO2 film with lotus leaf surface structure is prepared by using a sol containing tetra-n-butyl titanate complex and TiO2 colloidal particles as a precursor, and through phase separation of a sol liquid film formed by one-step dip-coating in a solvent evaporation process. The size and distribution density of the TiO2 microspheres on the hierarchical structure surface can be conveniently controlled by controlling the content of the TiO2 colloidal particles in the sol system.

The present invention describes a method for the realization of an antimicrobial membrane based on electrospun polydimethylsiloxane fibers (ROMS) functionalized with Titanium dioxide (TiO2) particles. The invention also describes the crystallization of these TiO2 particles on the surface of ROMS fibers by hydrothermal reaction, the properties of the membrane thus obtained and the numerous hygienic-sanitary applications of the same.

The present invention belongs to the field of materials production, and more specifically to a method for obtaining titanium oxide (TiO2) particles having a size that may preferably be selected between 0.5 and 3 μm and a low size dispersion (less than approximately 5% with respect to the average size). The synthesis route consists of controlled hydrolysis with an aqueous medium of hydrolysable titanium oxide precursors dissolved in solvents that are able to form complexes with the titanium oxide precursors and which have been pre-treated to remove wastewater and thus be able to access a wide range of experimental conditions. This synthesis route makes it possible to obtain monodisperse TiO2 microparticles at room temperature, easily, quickly, with low energy consumption and more efficiently. Furthermore, at an industrial level, the method is easily scalable.

This resin member comprises a photocatalyst coating film on a surface of a resin base material.　The photocatalyst coating film has a sea-island structure in which anatase-type titanium oxide particles are dispersed in an island form in the sea of a metal material, and thus can provide a resin member with a photocatalyst coating film that achieves both high photocatalytic effect and prevention of deterioration of the resin base material.

The invention belongs to the field of self-cleaning coatings, and provides self-cleaning anti-dust-deposition glass and a preparation method thereof.According to the self-cleaning anti-dust-deposition glass and the preparation method thereof, hydroxyl is formed on the surface of the glass through pretreatment, the glass is better combined with a coating solution subsequently, TiO2 particles of a micro-nano structure (the micro-nano structure that nano TiO2 is loaded on micron TiO2) are prepared, and the self-cleaning anti-dust-deposition glass is obtained. The preparation method comprises the following steps: firstly, preparing TiO2 particles with a micro-nano structure, then carrying out super-hydrophobic modification on the TiO2 particles with the micro-nano structure, preparing a spraying solution from the super-hydrophobic TiO2 particles and PDMS, and finally, spraying the spraying solution onto glass with hydroxyl to obtain the self-cleaning anti-dust-deposition glass. The coating does not contain fluoride and is environmentally friendly; the binding force of glass pretreatment and the coating is improved; tiO2 has a photocatalytic self-cleaning effect and can degrade oil stains on the surface of the assembly; the super-hydrophobic TiO2 micro-nano particles have micron-scale and nano-scale structures at the same time, and the hydrophobic capacity is higher; and the leveling agent is added, so that the coating is more stable.