196 results about "Metal oxide nanoparticles" patented technology

The invention provides a tip Raman-based metal oxide nanoparticle in-situ detection method, which comprises: S1, dispersing metal oxide nanoparticles in a nanoparticle dispersion liquid, focusing laser to the tip of a nanometer tip through an objective lens, capturing a single nanoparticle by using an optical tweezers technology, and attaching the single nanoparticle to the nanometer tip; s2, focusing Raman laser on a nano needle tip-particle interface, generating a local high-temperature field through a photo-thermal near-field coupling effect, triggering a thermal chemical reaction of nano particles, and synchronously collecting a Raman spectrum; and S3, carrying out pretreatment and characteristic peak analysis on the collected Raman signal of the Raman spectrum, and determining the reaction critical temperature and the dynamic process in combination with temperature calibration data. According to the invention, capture and accurate heating of the nanoparticles are realized through photo-thermal coupling of the optical tweezers and the needle tip, and thermal chemical reaction monitoring of the nanoparticles is realized.

The invention provides an electrolyte for quickly charging a sodium-ion battery without a negative electrode. The electrolyte comprises a sodium salt, a solvent and an additive. According to the electrolyte, metal oxide nanoparticles are introduced as a first additive, and a second additive is supplemented, so that rapid desolvation of sodium ions on an electrode interface and improvement of the ionic conductivity of an electrolyte body are realized at the same time, and compact and dendrite-free sodium deposition under high current density is realized. The negative-electrode-free sodium-ion battery prepared from the electrolyte can be quickly charged, and good cycling stability and high capacity retention ratio can be maintained, so that the use requirements of people can be met.

A nano composite, a nanoparticle ink composition including a solvent and the nanocomposite, and a light-emitting device including a first electrode, a second electrode facing the first electrode, and an interlayer between the first electrode and the second electrode, wherein the interlayer includes an emission layer, and at least one layer included in the interlayer is made from the nanoparticle ink composition. The nano composite includes: a metal oxide nanoparticle; and a chelating ligand bonded to a surface of the nanoparticle and including a cyclic moiety.

Provided is a metal oxide dispersion having excellent gap-fill performance, and a method of manufacturing a metal oxide film using the same. A metal oxide dispersion according to a first aspect of the present invention contains carboxylic acid having 9 or more carbon atoms, metal oxide nanoparticles surface-treated with a capping agent, and a solvent. A metal oxide dispersion according to a second aspect of the present invention contains carboxylic acid having a boiling point of 250° C. or higher at an atmospheric pressure, metal oxide nanoparticles surface-treated with a capping agent, and a solvent. A method of manufacturing a metal oxide film according to a third aspect of the present invention comprises: a step for forming a coating film formed of the metal oxide dispersion described above; and a step for heating the coating film at a temperature of 165° C. or higher.

The invention belongs to the technical field of diaphragms, and particularly relates to a cellulose and cellulose derivative doped composite diaphragm as well as a preparation method and application thereof.The preparation method comprises the following steps: adding a thermoplastic organic high-molecular polymer, a cellulose derivative and metal oxide nanoparticles into an organic solvent, dissolving, adding a pore-foaming agent, and uniformly stirring; uniformly mixing, defoaming to obtain a membrane casting solution, and blade-coating to obtain a liquid membrane; the liquid film is placed in a wet air atmosphere with the relative humidity of 30%-80% for pre-phase inversion, in the pre-phase inversion process, water vapor in wet air permeates into the liquid film and exchanges with the organic solvent in the liquid film, and a wet film is obtained; and immersing the wet membrane into an extracting agent for phase conversion to obtain the cellulose and derivative doped composite diaphragm. According to the preparation method, safe operation of the diaphragm can be ensured, the electrolytic efficiency of the diaphragm is remarkably improved, and the diaphragm is excellent in stability of long-time operation.

The invention discloses a water-based fire extinguishing agent based on inorganic silicon dioxide aerogel loaded metal oxide nanoparticles, a preparation method and application. The fire extinguishing agent is prepared from, by mass, 1%-5% of silicon dioxide aerogel loaded metal oxide nanoparticles, 1%-10% of a foaming agent, 0.1%-2% of a stabilizer, 1%-10% of a flame retardant, 0.5%-5% of an anti-freezing agent, 0.1%-1% of a preservative and the balance water. The silicon dioxide aerogel loaded metal oxide nano-particles are prepared by the following steps: preparing a silicon dioxide aerogel skeleton, preparing metal oxide nano-particles, and modifying, loading and drying silane. The preparation method comprises the following steps: firstly preparing a dispersion liquid A containing the composite particles and a solution B containing the functional additive, and then carrying out mixing and ultrasonic treatment to obtain the product. The fire extinguishing agent can rapidly extinguish 314Ah lithium iron phosphate battery fire, efficiently consumes HF / CO and other gases, and is stable in system, environmentally friendly and suitable for battery fire prevention and control.

The present disclosure provides a metal oxide nanoparticle comprising a metal oxide, the metal capable of being a Lewis acid; a polymer comprising an ionisable moiety; and an amino acid; wherein a weight ratio of amino acid to 5 polymer is about 0.1:99.9 to about 99.9:0.1; wherein the amino acid is electrostatically interacting with the polymer; wherein the metal oxide comprises metal ions in a 3+ and 4+ valence state; and wherein the metal oxide is selected from lanthanide oxide and / or zirconium oxide. The present disclosure also provides a method of fabricating a metal oxide particle and use thereof.

A light-emitting element includes: a first electrode; a second electrode; a light-emitting layer provided between the first electrode and the second electrode; and a charge transport layer provided between the first electrode and the light-emitting layer, wherein the charge transport layer includes a metal oxide nanoparticle, an organic ligand is chemically bonded to the metal oxide nanoparticle via a surface hydroxyl group of the metal oxide nanoparticle, a bond enthalpy at 298 K between bonding atoms at a bonding site between the organic ligand and the surface hydroxyl group is 326.7 kJ / mol or more, and the organic ligand includes a phosphonic acid.

To provide, for example, a curable composition that is useful as an optical material, and a cured product formed by curing the same.SOLUTION: According to one embodiment, there is provided a curable composition containing 30 to 75 pts.mass of metal oxide nanoparticles (A), 5 to 30 pts.mass of an aromatic mono(meth)acrylate (B), and 5 to 30 pts.mass of a polyfunctional (meth)acrylate (C) having a functionality of 3 or more.SELECTED DRAWING: None

A method of making surface-functionalized transition metal oxide nanoparticles comprises: providing a sol comprising transition metal oxide nanoparticles dispersed in an aqueous liquid medium having a pH of less than or equal to 3.5, combining the sol with an extractant composition comprising at least one carboxylic acid and at least one organic amine, and a water-immiscible organic solvent, and separating at least a portion of the organic phase from the aqueous phase and then at least partially removing the water-immiscible organic solvent. The carboxylic acid has from 6 to 30 atoms. The organic amine is represented by the formula R2R3NH, wherein R2 is a hydrocarbyl group having from 6 to 30 carbon atoms, and R3 is H or an alkyl group having from 1 to 4 carbon atoms. The at least one organic amine is present in an amount sufficient raise the pH to at least 5, thereby forming discrete separable aqueous and organic phases. A surface-modified nanoparticle composition, a curable composition and an article comprising the same are also disclosed.

The application discloses a thermodynamic dual-mode composite sensitive material, a preparation method and application thereof. The composite sensitive material comprises a matrix, has a three-dimensional porous structure, and comprises a polymer material and a sheet-shaped non-metallic conductive material; and metal oxide nanoparticles are distributed on the surface of the sheet-shaped non-metallic conductive material; wherein the sheet-shaped non-metallic conductive material and the metal oxide nanoparticles are both materials with negative thermoelectric coefficients. The thermodynamic dual-mode composite sensitive material provided by the application integrates pressure sensing and thermoelectric performance, which avoids the problems of complex layout and complex signal transmission of a traditional dual-mode sensor; meanwhile, the pressure sensing and the thermoelectric sensing are not interfered with each other, so that the prepared sensor has the advantages of signal non-interference decoupling, avoidance of wear failure, strong adaptability, non-destructiveness, high safety and the like, can adapt to a higher temperature, and has stable temperature signal output.

The present invention discloses a light-emitting device, a method for manufacturing a light-emitting device, and a display device including the light-emitting device. The light-emitting device includes: a first electrode and a second electrode, each having surfaces opposite to each other; a light-emitting layer comprising quantum dots disposed between the first electrode and the second electrode; and an electronic auxiliary layer disposed between the light-emitting layer and the second electrode, wherein the electronic auxiliary layer comprises metal oxide nanoparticles, and the metal oxide nanoparticles comprise anions of organic acids bound to the surface of the metal oxide nanoparticles.

The present invention relates to light emitting devices and display apparatuses including the same. The light emitting device includes an emissive layer including a plurality of quantum dots, and an electron auxiliary layer disposed on the emissive layer, the electron auxiliary layer transporting electrons to the emissive layer, wherein the electron auxiliary layer includes a plurality of metal oxide nanoparticles, wherein the metal oxide nanoparticles include zinc and a dopant metal, wherein the dopant metal includes Mg, Mn, Ni, Sn, Al, Y, Ga, Zr, Li, Co, or a combination thereof, wherein a concentration of the dopant metal in at least one of the metal oxide nanoparticles increases in a direction from an inner portion to an outer portion of the nanoparticle, or increases in a direction from an outer portion to an inner portion of the nanoparticle.

The application discloses a catalyst for a hydrogen production device for electrolysis of water by a proton exchange membrane and a preparation method and application thereof, the catalyst is manganese ruthenium metal oxide nanoparticles loaded on a conductive network of nitrogen-doped carbon nanotubes grown on a carbon cloth, and the mass ratio of manganese to ruthenium is 5-9:1-5; the nitrogen-doped carbon nanotubes have excellent conductive performance, the fine reticular structure is beneficial to more attachment of active substances, and the nitrogen-doped carbon nanotubes also have a high specific surface area and a stable three-dimensional structure, so that a good precursor is provided for subsequent hydrothermal growth of manganese ruthenium metal oxide, and the agglomeration of nanoparticles is avoided; PECVD makes the manganese ruthenium metal oxide nanoparticles more dispersed and uniform, further improves the specific surface area, exposes more active sites, and improves the catalytic activity; the interaction has greater conductive electron performance, and the basic skeleton of the manganese ruthenium metal oxide can also provide conditions for mass transfer of electrolysis of water, so that the electrode catalyst provides a larger channel for electron transfer.

The present invention relates to an inverted perovskite prepared by providing a surface-modified metal oxide nanoparticle as a coating agent for forming an electron transporting layer (or electron transport layer), and using the surface-modified metal oxide nanoparticle as a coating agent prepared in a dispersion type.

The invention belongs to the technical field of batteries, and particularly relates to a composite solid electrolyte membrane, a preparation method thereof and a battery. The method comprises the following steps: mixing a perfluorosulfonic acid type polymer with an alkali metal compound, and carrying out a neutralization reaction to obtain a first mixed solution; stirring and mixing the first mixed solution and an alcohol solvent to obtain a second mixed solution; stirring and mixing the second mixed solution, a multivalent metal ion compound and metal oxide nanoparticles to form composite slurry; and coating the composite slurry on the surface of a current collector and carrying out gradient drying to obtain the composite solid electrolyte membrane. According to the method, the ionic conductivity of the solid electrolyte membrane is improved, and the coating uniformity or the membrane layer compactness is improved.

The application provides a preparation method of a Pickering type SCR catalytic functional emulsion containing composite metal oxide particles. The composite metal oxide particles prepared by a wet chemical method are used as emulsifiers, water is used as a continuous phase, and a water-insoluble organic solvent is used as a dispersed phase. The stable O / W type catalytic functional emulsion is obtained by high-speed shearing homogenization and emulsification in a sealed container. The composite metal oxide nanoparticles with no irritation, high low-temperature catalytic activity and easily available raw materials are used as the SCR catalyst and emulsifier to replace the traditional surfactant. The Pickering type SCR catalytic functional emulsion prepared by the application has better dispersion performance and stability than the catalytic functional emulsion stabilized by the traditional surfactant. The preparation method is simple, the prepared emulsion can be uniformly loaded on the surface of various filter carriers, the reaction activity of the catalyst is well reserved, and the binding firmness between the catalyst and the filter carrier is high.

Provided is a method for manufacturing a metal oxide nanoparticle represented by Chemical Formula 1, the method comprising: a step of forming a first composition comprising a nickel-containing precursor and an M-containing precursor, and a step of heat-treating the first composition, in which the M-containing precursor comprises at least one halogen element: Chemical Formula 1 Ni1-xMxO, in Chemical Formula 1, 0 lt; xlt; 1, and M comprises at least one metal element.

The invention relates to a preparation method and application of high-temperature-resistant inorganic modified bentonite. The method comprises the following steps: firstly, treating bentonite and sepiolite composite clay through a microwave-assisted hydrogen peroxide method, and improving the dispersity of minerals by utilizing a large amount of oxygen generated by decomposing hydrogen peroxide in a microwave field; then metal oxide nanoparticles are added into the suspension of the composite clay mineral, and sepiolite and metal oxide are used for synergistically modifying bentonite, so that the high-temperature tolerance of the material at 250 DEG C is improved, and the material can be used as a slurry making agent in water-based drilling fluid. No organic reagent is used, and related products have good thermal stability.

The present invention relates to an adsorbent material comprising a support consisting of activated carbon or nonwoven nanofibers, said support being impregnated with metal oxide nanoparticles, and said nanoparticles being functionalized by covalent bonding with polyfluoro and / or polyalkyl phosphonic ligands.

The utility model relates to the field of car cover, especially a high heat insulation ultraviolet resistant car cover. The utility model wants to solve the technical problem to provide a kind of high heat insulation ultraviolet resistant car cover that can synergic barrier ultraviolet and infrared, with high heat insulation and ultraviolet resistant performance, improve the service life. A kind of high heat insulation ultraviolet resistant car cover, including the substrate layer, function layer and protective layer that are sequentially laminated settings;The function layer is alternatively stacked by multiple heat insulation layers and multiple ultraviolet resistant layers;The heat insulation layer is metal sputtering layer or metal oxide nanoparticle layer, for reflecting or absorbing infrared rays;The ultraviolet resistant layer is ultraviolet absorber coating, for absorbing ultraviolet rays. The utility model reaches the effect that synergic barrier ultraviolet and infrared, with high heat insulation and ultraviolet resistant performance, improve the service life.

A battery, for example, includes a positive electrode and a negative electrode, where the negative electrode comprises sheets of active material with hydroxylated edges surrounding non-hydroxylated planes. Hydroxylated metal oxide nanoparticles chemoabsorb onto the hydroxylated edges, selectively coating these regions. The metal oxide nanoparticles can be made of tungsten, niobium, or aluminum.

The invention relates to the technical field of dehydration treatment, and discloses a magnetic induction heating organic solvent dehydrating agent and a preparation method and application thereof.The preparation method comprises the steps that metal or metal oxide nanoparticles are mixed with hydrogen peroxide, surface modification is conducted on the metal or metal oxide nanoparticles, and modified metal or metal oxide nanoparticles are obtained; mixing the modified metal or metal oxide nanoparticles with a dehydrating agent and a binder to obtain slurry of the magnetic induction heating organic solvent dehydrating agent; and molding the slurry of the magnetic induction heating organic solvent dehydrating agent, and then roasting to obtain the magnetic induction heating organic solvent dehydrating agent. The magnetic induction heating organic solvent dehydrating agent prepared by the invention has the advantage of remarkable low energy consumption in the field of organic solvent dehydration, realizes in-situ regeneration of heat through an alternating magnetic field, is high in heating rate, short in heat transfer path and high in energy utilization rate, and reduces the energy consumption by more than 25% compared with a traditional high-temperature gas heating method.

A water container (100) for purifying water is provided, the water container comprising an opening (350b) configured to receive water, a container body (110) arranged to enclose the water, and a water purification unit configured to purify the water. The water purification unit comprises an at least partially transparent plate (120) comprising a coating of metal oxide nanoparticles (220) on a first side (125a) facing the container body, wherein the first side is configured to be in contact with the water, and an ultraviolet light module (130) configured to radiate towards a second side (125b) of the at least partially transparent plate such that light from the ultraviolet light module at least partially passes through the at least partially transparent plate. Further provided is a method for purifying water within a water container.

The invention discloses a composite material and a preparation method thereof, a thin film, a photoelectric device and a display device, the composite material comprises metal oxide nanoparticles and a shell layer coating the surfaces of the metal oxide nanoparticles, and the material of the shell layer comprises alkali metal halide. According to the composite material provided by the technical scheme of the invention, the surfaces of the metal oxide nanoparticles are coated with the alkali metal halide, so that the stability of the metal oxide nanoparticles in the electrifying process is improved, and the electrochemical change is reduced.

The invention belongs to the technical field of display, and particularly relates to a thin film, a preparation method thereof, a light-emitting device comprising the thin film and a display device. The thin film comprises ligands and metal oxide nanoparticles, the ligands are connected with the metal oxide nanoparticles through chemical bonds, and the ligands comprise C6-C60 first aromatic hydrocarbons or derivatives thereof. When the thin film provided by the invention is used as an electron transport layer in a device, carrier quenching in the device can be effectively reduced, and the luminous efficiency and the stability of the device are improved.

The application provides a single-core double-module graphene-based gas sensor and a preparation method thereof, and relates to the technical field of gas sensors.The preparation method comprises the following steps: dividing the main surface of a wooden substrate into a first surface and a second surface which are arranged adjacently; coating a first metal salt solution on the first surface and a second metal salt solution on the second surface; irradiating the first surface and the second surface by using a laser beam, so that lignin and cellulose in the wooden substrate are cracked and restructured to form graphene, the first metal salt immersed in the first surface is decomposed to form first metal oxide nanoparticles, and the second metal salt immersed in the second surface is decomposed to form second metal oxide nanoparticles, so that a first sensitive layer and a second sensitive layer are obtained; and coating a conductive material on the wooden substrate and on the two sides of the first sensitive layer and the second sensitive layer respectively, so that a connecting electrode which is in contact with the first sensitive layer and the second sensitive layer respectively is formed, and a single-core double-module graphene-based gas sensor is obtained.

The invention belongs to the technical field of photoelectric devices, and relates to a composition which comprises metal oxide nanoparticles, an inorganic hydrate and a solvent. The invention also relates to a thin film and a preparation method thereof, a photoelectric device and a display device. According to the technical scheme provided by the invention, the surface defects of the metal oxide can be effectively passivated, and the electron migration efficiency of the metal oxide nanoparticles is improved, so that the conductivity of a carrier functional layer prepared by taking the metal oxide nanoparticles as a material is improved, and the performance and the service life of a photoelectric device are further improved.

The invention belongs to the technical field of display, and relates to a composite material and a preparation method thereof, a light-emitting device and a display device.The composite material comprises quantum dots, metal oxide nanoparticles and a connecting organic matter connecting the quantum dots and the metal oxide nanoparticles, and the connecting organic matter is in coordination combination with the quantum dots and the metal oxide nanoparticles; r in the connected organic matter is selected from a cyclic group or a chain group, and the number of carbon atoms of a main chain of the chain compound is not more than 10. The surface defects of the quantum dots are passivated, the stability of the quantum dots is improved, the steric hindrance among the quantum dots is increased, agglomeration among the quantum dots is prevented, effective composite luminescence of excitons in the quantum dots is facilitated, and the luminescence performance is improved.

A red light-emitting element (5R), which is a light-emitting element, includes: an anode that is a lower electrode (22); a cathode that is an upper electrode (25); a red light-emitting layer (24 REM) that is provided between the anode that is the lower electrode (22) and the cathode that is the upper electrode (25); and a first charge transport layer (24ET) that is a functional layer provided between the red light-emitting layer (24 REM) and the cathode that is the upper electrode (25). The first charge transport layer (24ET) that is the functional layer includes electron-transporting metal oxide nanoparticles (ETNP) and alcohol protection groups (APG).