47 results about "Titania nanoparticles" patented technology

The present invention relates to the formation of surface treated zinc oxide and titania particles, and in particular zinc oxide and titania nanoparticles, with a siloxane star-graft copolymer coating, comprising a looped and / or linear polymeric structure on a star-graft copolymer coating, on a particle surface to control the interfacial surface interactions between the particle and the oil phase of the cosmetic skin formulation.

A one-step and room-temperature process for depositing nanoparticles or nanocomposite (nanoparticle-assembled) films of metal oxides such as crystalline titanium dioxide (TiO2) onto a substrate surface using ultrafast pulsed laser ablation of Titania or metal titanium target. The system includes a pulsed laser with a pulse duration ranging from a few femtoseconds to a few tens of picoseconds, an optical setup for processing the laser beam such that the beam is focused onto the target surface with an appropriate average energy density and an appropriate energy density distribution, and a vacuum chamber in which the target and the substrate are installed and background gases and their pressures are appropriately adjusted.

The invention relates to the environment-friendly technical field of semiconductor nanomaterials, in particular to a sol-gel preparation method of molybdenum-doped nano-titanium dioxide with relatively high photocatalytic activity. The present invention is based on current research, and aims to better overcome the defect of high recombination rate of photogenerated electron-hole pairs in photocatalytic reaction, and prepare molybdenum-doped nano-titanium dioxide photocatalyst by sol-gel method. The production method of the invention is simple and the cost is low; the molybdenum-doped nano titanium dioxide prepared by the invention has the characteristic of high photocatalytic activity. It is widely used in automotive topcoats, photosensitive materials, photocatalysts, cosmetics, food packaging materials, ceramic additives, gas sensors and electronic materials.

The invention discloses an olefin deoxygenation agent, its preparation method, and olefin deoxygenation method using the same. The preparation method includes (by weight parts) (1) mixing manganese source (as Mn3O4) 100 and titania nanoparticle (modified by alkali metal oxide) 58-100 to obtain a mixture; (2) kneading the mixture and a silver compound (as Ag2O) aqueous solution 8-35, and forming; (3) aging and drying; and (4) calcining. The inventive olefin deoxygenation agent has high room-temperature deoxygenation capacity up to 29.3 mL / g, deoxygenation depth smaller than 0.01 ppm, low reduction temperature, and wide applicability in industrial production.

The present invention relates to a method of manufacturing titania nanoparticles, and specifically to a method of manufacturing titania nanoparticles wherein the particle size is uniform, it is possible to manufacture monodisperse particles without aggregation among particles, a uniform coating can be applied, that is suitable to large-scale production, and that can obtain high-resolution images by maintaining the toner electric charge and electric charge distribution; and the developer included in said titania nanoparticles.

A copolymer comprises the reaction product of (a) (meth)acrylate functionalized nanoparticles, (b) vinyl monomer, and (c) silicone macromer. The (meth)acrylate functionalize nanoparticles are selected from the group consisting of silica nanoparticles, zirconia nanoparticles, titania nanoparticles, and combinations thereof.

The invention discloses an olefin deoxygenation agent, its preparation method, and olefin deoxygenation method using the same. The preparation method includes (by weight parts) (1) mixing manganese source (as Mn3O4) 100, modified titania nanoparticle 58-100 and binder 1.5-25 to obtain a mixture; (2) kneading the mixture and a silver compound (as Ag2O) aqueous solution 8-35, and forming; (3) aging and drying; and (4) calcining. The inventive olefin deoxygenation agent has high room-temperature deoxygenation capacity up to 28.5 mL / g, high mechanical crushing strength up to 88 N / cm, deoxygenation depth smaller than 0.01 ppm, low reduction temperature, and wide applicability in industrial production.

The invention discloses an olefin deoxygenation agent, its preparation method, and olefin deoxygenation method using the same. The preparation method includes (by weight parts) (1) mixing manganese source (as Mn3O4) 100, modified titania nanoparticle 58-100 and binder 1.5-25 to obtain a mixture; (2) calcining; (3) kneading the calcined mixture and a silver compound (as Ag2O) aqueous solution 8-35, and forming; (4) aging and drying; and (5) calcining. The inventive olefin deoxygenation agent has high room-temperature deoxygenation capacity, high mechanical crushing strength, low deoxygenation depth, low reduction temperature, and wide applicability in industrial production.

The present invention relates to a method of manufacturing titania nanoparticles, and specifically to a method of manufacturing titania nanoparticles wherein the particle size is uniform, it is possible to manufacture monodisperse particles without aggregation among particles, a uniform coating can be applied, that is suitable to large-scale production, and that can obtain high-resolution images by maintaining the toner electric charge and electric charge distribution; and the developer included in said titania nanoparticles.

A method is disclosed of producing stable nanosized colloidal suspensions of particles with limited crystallinity loss, products thereof, use of the products and an apparatus for the method. In particular the present invention relates to a wet milling method with small beads wherein the size of the final particles in suspension are stabilized in the nanorange (D50<75 nm) and at the same time the particles substantially maintain the crystallinity.

The invention discloses an olefin deoxygenation agent, its preparation method, and olefin deoxygenation method using the same. The preparation method includes (by weight parts) (1) mixing manganese source (as Mn3O4) 100, titania nanoparticle 58-100 and binder 1.5-25 to obtain a mixture; (2) kneading the mixture and a silver compound (as Ag2O) aqueous solution 8-35, and forming; (3) aging and drying; and (4) calcining. The inventive olefin deoxygenation agent has high room-temperature deoxygenation capacity up to 24.8 mL / g, high mechanical crushing strength up to 89 N / cm, deoxygenation depth smaller than 0.01 ppm, low reduction temperature, and wide applicability in industrial production.

The invention discloses an olefin deoxygenation agent, its preparation method, and olefin deoxygenation method using the same. The preparation method includes (by weight parts) (1) mixing manganese source (as Mn3O4) 100, titania nanoparticle 58-100 and binder 1.5-25 to obtain a mixture; (2) calcining; (3) kneading the calcined mixture and a silver compound (as Ag2O) aqueous solution 8-35, and forming; (4) aging and drying; and (5) calcining. The second calcining temperature is lower than the first calcining temperature. The inventive olefin deoxygenation agent has high room-temperature deoxygenation capacity, high mechanical crushing strength, low deoxygenation depth, low reduction temperature, and wide applicability in industrial production.

The invention provides a preparation of a transition metal hexacyanoferrate / titanium dioxide nanocomposite catalyst: using transition metal chloride or transition metal nitrate, potassium ferrocyanide, and titanium dioxide as raw materials, through an in-situ chemical solution method , in situ growth of transition metal hexacyanoferrate (MHCF) on the surface of titania nanoparticles yielded MHCF / TiO 2 nanocomposite catalysts. The present invention also provides a kind of MHCF / TiO 2 Nanocomposite catalyst light-Fenton synergistic reaction method for degrading organic pollutants: in the dark reaction without light, MHCF can degrade organic pollutants in the form of Fenton reaction, and under ultraviolet light irradiation, titanium dioxide (photocatalyst) can Electron-hole pairs are generated, and electrons can be accelerated by H in MHCF 2 o 2 The reduction of oxidized ferric iron, at the same time, MHCF can also inhibit the recombination of photogenerated electrons and holes by accepting the electrons of titanium dioxide, thereby accelerating the Fenton reaction and the efficiency of hydroxyl radicals generated by the photocatalytic process. have very good degradation efficiencies.