35 results about "Metal oxide nanoparticles" patented technology

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.

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).

A multilayer film includes pluralities of first layers and polymeric second layers arranged along a thickness direction of the multilayer film. The first and second layers having different compositions. At least one layer of the multilayer film includes at least one polymer and metal oxide nanoparticles dispersed in the at least one polymer. The at least one polymer includes a first polymer including (meth)acrylic acid monomer units. The metal oxide nanoparticles are surface modified with a carboxylic acid silane surface modifying agent.

This invention belongs to the field of optical thin film technology for optical devices, and relates to a ligand and a method for modifying metal oxide nanoparticles using this ligand, as well as its applications. This method of modifying metal oxide nanoparticles using a multi-branched ligand containing phosphate groups achieves precise control of reaction conditions and environment through a multi-ligand combination-step reaction modification approach. This results in a richer effect of the surface organic components of the metal oxide nanoparticles, exhibiting more transparent organic dispersion under high concentrations of the same inorganic particles. Furthermore, the multi-branched ligand containing phosphate groups shows higher reactivity with the surface of hydroxylated metal oxide nanoparticles, resulting in a more significant modification effect, with the surface organic ligand accounting for no less than 20% by thermogravimetric analysis.

The present invention provides metal oxide nanoparticles with excellent properties. Furthermore, it provides an effective method and apparatus for producing H2, hydrocarbons, and / or alcohols using a metal oxide nanoparticle colloidal dispersion as a catalyst. [Solution] A metal oxide nanoparticle colloidal dispersion is disclosed, comprising metal oxide nanoparticles containing a first metal oxide and a second metal oxide, and a capping agent. A method for producing H2, hydrocarbons, and / or alcohols using the metal oxide nanoparticle colloidal dispersion as a catalyst is also disclosed. Furthermore, an apparatus for producing H2, hydrocarbons, and / or alcohols is disclosed, comprising an electrolytic cell containing the metal oxide nanoparticle colloidal dispersion.

This invention relates to the field of micro / nano manufacturing technology, and in particular to a high-refractive-index fluidized nanoparticle, a hybrid photoresist, a patterned coating, and methods for preparing the respective. The high-refractive-index fluidized nanoparticle comprises a core, the core being modified with a first ligand and a second ligand; the first ligand is one or more selected from methacrylic acid, 4-pentenoic acid, methacryloxypropyltrimethoxysilane, and sodium methacrylate sulfonate; the second ligand is one or more selected from piperidine, N,N-diisopropylethylamine, 1,5,7-triazabicyclo[4.4.0]decene-5-ene, tetramethylguanidine, triethylamine, and tetrahydropyrrole. This invention, through the design of ultra-small metal oxide nanoparticles and innovative organic ligands, successfully solves the technical contradiction of traditional photoresist materials in achieving high resolution, high refractive index, and low curing shrinkage.

The application provides an SCR denitration and dust removal integrated catalyst and a preparation method and application thereof, and a NO x Method for treating flue gas. The catalyst comprises randomly stacked inorganic fibers, optional metal oxides, and composite metal oxide nanoparticles loaded on the surface of the inorganic fibers; the composition of the composite metal oxide nanoparticles is Fe a Ce b Mn c Zr d Ti e O2, wherein a ranges from 0.01 to 0.9, b ranges from 0.01 to 0.5, c ranges from 0.01 to 0.25, d ranges from 0.01 to 0.25, and e ranges from 0.01 to 0.9; the metal oxide comprises Al2O3 and / or SiO2. The catalyst provided by the application takes randomly stacked inorganic fibers as a carrier and takes composite metal oxide nanoparticles loaded on the inorganic fibers as an active component, and is particularly suitable for NO x flue gas purification, and can simultaneously achieve the technical effects of good denitration and dust removal.

The application provides a kind of weather-resistant optical functional coating nanoparticles and its preparation method and application, belong to the field of coating.The nanoparticles include: inner core, the inner core is near-infrared reflective material;The near-infrared reflective material uses metal oxide nanoparticles with near-infrared reflective function;First wrapping layer, the first wrapping layer is silica intermediate layer, which wraps the inner core;Second wrapping layer, the second wrapping layer is alumina passivation layer, which wraps the silica intermediate layer.The nanoparticles are used as the functional filler of weather-resistant optical functional coating.The application provides a kind of core-shell structure nanoparticles, by introducing specific passivation layer, while retaining the near-infrared reflective function of inner core material, fundamentally eliminate its photo-catalytic damage to organic matrix, so as to obtain long-acting stability, high visible light transmittance, excellent spectral selectivity and weather-resistant coating.

The present invention is a composition for forming a silicon-containing metal hard mask, including: (A) a metal oxide nanoparticle; (B) a thermally crosslinkable polysiloxane (Sx) having no aromatic-ring-containing organic group; and (C) a solvent. This provides a composition for forming a silicon-containing metal hard mask that has a high effect of inhibiting collapse of an ultrafine pattern in a multilayer resist method, that can form a resist pattern having excellent LWR, that has more excellent dry etching resistance and wet removability than a conventional silicon-containing underlayer film material, and that has more excellent filling ability than a conventional metal hard mask material.

This invention provides biomass carbon / metal oxide nanoparticles and their preparation method, as well as carbon-based nanomaterial emulsifiers and their applications. The preparation method of the biomass carbon / metal oxide nanoparticles includes: sequentially drying, carbonizing, and pulverizing biomass loaded with metal oxide precursors. The biomass carbon / metal oxide nanoparticles of this invention have strong emulsifying properties, low raw material costs, require no surface modification, have a simple preparation process, are highly practical, and are easy to promote and use. The carbon-based nanomaterial emulsifier containing biomass carbon / metal oxide nanoparticles can enhance the emulsifying ability of nanocomposite oil displacement systems, achieve efficient oil washing and emulsification diffusion, and solve the problem of poor emulsification and oil displacement effect in composite oil displacement systems under alkali-free conditions. This is of great significance for the efficient development of medium- and low-permeability reservoirs.

This invention discloses a catalyst for the preparation of dialkyl carbonate, its preparation method, and its application. The catalyst comprises metal oxide nanoparticles and an ionic liquid coupling agent grafted onto their surface. By weight of the catalyst, the content of the metal oxide nanoparticles is 40 wt%–70 wt%, and the content of the ionic liquid coupling agent is 30 wt%–60 wt%. Using the catalyst of this invention to catalyze the preparation of dialkyl carbonate from dialkyl oxalate results in high yield of the target product, long catalyst life, and effectively reduces the generation of side reactions.

Disclosed are electroluminescent devices, methods of making the same, and display devices comprising the same. The electroluminescent device comprises a first electrode and a second electrode; an emissive layer disposed between the first electrode and the second electrode; an electron transport layer between the emissive layer and the second electrode; and a hole auxiliary layer between the emissive layer and the first electrode. The emissive layer comprises semiconductor nanoparticles and is configured to emit a first light. The electron transport layer comprises metal oxide nanoparticles having a size greater than or equal to about 1 nm and less than or equal to about 30 nm. The metal oxide nanoparticles comprise zinc and optionally a Group IIA metal, Zr, W, Li, Ti, Y, Al, gallium, indium, tin (Sn), cobalt (Co), vanadium (V), or a combination thereof. The hole auxiliary layer comprises a hole injection / transport material and a base quencher comprising an alkali metal hydroxide, an ammonium hydroxide compound, an amine compound, or a combination thereof.

This invention relates to a layered coating reflective film and a side-lit backlight module, belonging to the field of optical film technology. The layered coating reflective film includes a reflective substrate and a first coating and a second coating sequentially stacked on the reflective substrate. The first coating includes at least polymer particles of mixed particle sizes, and the second coating includes at least a functional material. The functional material includes a one-dimensional tubular carrier and metal oxide nanoparticles with a refractive index of 1.6 or higher loaded on the one-dimensional tubular carrier. The functional material is present in higher concentrations on the side of the second coating furthest from the first coating than on the side closest to the first coating. The layered coating reflective film of this invention achieves high brightness while possessing excellent anti-adsorption properties, enabling the side-lit backlight module to eliminate appearance defects such as top white and improve optical performance such as brightness.

The present invention relates to an adsorbent material comprising a support made of activated carbon or non-woven nanofibers, said support being impregnated with metal oxide nanoparticles, and said nanoparticles being functionalized by covalent bonding with polyfluorinated and / or polyalkylated phosphonic ligands.

This invention relates to a superhydrophobic coating with anti-corrosion and anti-icing properties, its preparation method, and its application, belonging to the field of protective coating technology. The coating preparation method includes: dispersing metal oxide nanoparticle powder in a blend solution containing hydrochloric acid and o-methoxyaniline monomer, stirring and reacting in an ice-water bath, then slowly adding an ammonium persulfate aqueous solution, continuing the stirring reaction to obtain a hydrochloric acid-doped POA / NPs composite material; dispersing it in an ammonia aqueous solution, stirring and reacting at room temperature to obtain a dedoped powder; blending it with epoxy resin and polydimethylsiloxane in a blend solvent of anhydrous ethanol and N-methylpyrrolidone, adding fatty acids, heating and stirring in a water bath, and then uniformly spraying it onto a substrate to obtain the coating. The coating obtained by this invention is a superhydrophobic coating with excellent anti-corrosion and anti-icing properties, and can be used for comprehensive protection of marine engineering and wind power generation equipment.

The invention concerns inventive nanoparticles (NPs), their compositions and their use as therapeutic agents in particular in the field of oncology and / or as imaging agents. The NPs are composed of first nanoparticles of at least one high-Z metal oxide material, to which smaller second nanoparticles are covalently bonded at the first nanoparticles' surface. The second nanoparticles are composed of either a) at least one noble metal or at least one metal oxide, metal sulfide, metal selenide or metal sulfide / selenide that is a Fenton or Fenton-like reaction catalyst. The inventive NPs generate a surprisingly therapeutic effect when exposed to ionizing radiation such as X-Rays, γ-Rays, protons, neutrons, radioactive isotopes and / or electron beams. Thus, the NPs may be used as radioenhancers in the field of oncology. The nanoparticles may also be used as contrast agents.

A nanocomposite including a metal oxide nanoparticle and a hydrophilic ligand is provided. The nanocomposite is a component of an ink composition, a light-emitting device, an electronic apparatus, and electronic equipment.

This application relates to the field of hot-dip galvanizing corrosion protection, specifically disclosing a flux for hot-dip galvanizing processes, its preparation method, and its application. The flux for hot-dip galvanizing processes, by weight, comprises the following components: 80-100 parts zinc chloride; 140-160 parts ammonium chloride; 40-45 parts metal oxide nanoparticles; 15-18 parts responsive EDTA microcapsules; 7.5-9 parts polyvinyl butyral fiber; and 1500 parts water. The metal oxide nanoparticles include cerium oxide nanoparticles and / or zirconium oxide nanoparticles. The responsive EDTA microcapsules are prepared from EDTA, chitosan, and N-isopropylacrylamide. The flux of this application improves zinc layer adhesion, reduces surface defects, and reduces workpiece corrosion. It also actively reduces the amount of FeCl3 in the system, inhibiting its embedding in the zinc layer and forming pits, thereby significantly reducing coating defects.

The application provides a PVC building material film anti-graffiti skin feeling water-oil composition and a preparation method thereof, which comprises: a film forming substance, including a water-based polyurethane dispersion and a water-based acrylic emulsion; an anti-graffiti functional additive, including a fluorine-containing polymer with low surface energy characteristics and metal oxide nanoparticles with photocatalytic activity; a skin feeling regulator, including polymer micro powder with a low friction coefficient and inorganic matte powder; and a cross-linking curing agent, selected from nitrogen propylene or isocyanate curing agents. The application uses the film forming substance as a coating skeleton, and the water-based polyurethane dispersion and the water-based acrylic emulsion synergistically act to provide the coating with basic mechanical properties and adhesion. The anti-graffiti functional additive realizes a double anti-graffiti mechanism. The skin feeling regulator can create a unique touch and visual effect. The cross-linking curing agent significantly improves the cross-linking density and durability of the coating, so that a multifunctional coating system is constructed.

This invention relates to the field of wastewater treatment technology, specifically to an ozone catalyst, its preparation method, and its application. The ozone catalyst uses a composite material of boron-doped activated carbon and nitrogen-doped carbon dots as a matrix, and is loaded with manganese, cerium, and copper. The nitrogen-doped carbon dots effectively anchor metal ions, forming uniformly dispersed metal-nitrogen-doped carbon dot active sites, which not only prevents the aggregation of metal oxide nanoparticles but also maximizes the exposure of active sites. Simultaneously, combined with the stabilizing effect of CeO2, the metal active components are firmly anchored, reducing the metal dissolution rate. Furthermore, the hydrophobic-hydrophilic balance on the surface of the ozone catalyst support and the chemical inertness of the carbon material effectively reduce the irreversible adsorption of natural organic matter and anions in the water at the active sites, preventing catalyst deactivation and improving the catalyst's resistance to poisoning.

This invention discloses a method for fabricating a flexible electronic nose based on laser-induced graphene. A pre-defined pattern is fabricated on a selected polyimide substrate using a laser to obtain a laser-induced graphene electrode. Three different metal oxide nanoparticles—tin dioxide, tungsten trioxide, and zinc oxide-indium oxide—are selected as gas-sensitive materials. These materials are deposited on LIG using a simple process to form gas-sensitive units, which are used to construct an orthogonal sensor array. By collecting signals from the gas-sensitive units, specific signal features of the sensing units are selected to build a dataset, which is then used for pattern recognition. The final result shows a high recognition rate for single or mixed gases. The electronic nose of this invention is simple to operate, cost-effective, highly flexible, and environmentally friendly in its gas-sensitive sensing unit design. It can also be easily attached to clothing or other substrates, making it portable and wearable.

An embodiment of the present invention provides a Reverse Water Gas Shift (RWGS) reaction catalyst, comprising: a composite metal oxide support; and metal or metal oxide nanoparticles dispersed on a surface of the composite metal oxide support or within pores thereof, wherein the composite metal oxide support is derived from a layered double hydroxide comprising copper and at least two metals different from copper, and wherein the metal nanoparticles are reduced from the composite metal oxide support.

The application provides a salt-mist-resistant offshore photovoltaic glass and a preparation method thereof, and relates to the technical field of solar devices.The salt-mist-resistant offshore photovoltaic glass comprises a glass base material, a dense passivation layer and a surface hydrophobic layer, wherein the thickness of the dense passivation layer is 20-40 nm; the thickness of the surface hydrophobic layer is 110-150 nm; and the dense passivation layer comprises silicon dioxide, zirconium dioxide, rare metal oxide and nanoparticles.When the dense passivation layer is prepared, the silicon dioxide sol and the zirconium silicate sol can form a Zr-O-Si three-dimensional network structure, which can synergistically act with the silicon dioxide, the zirconium dioxide, the rare metal oxide and the nanoparticles, so that the light transmittance of the offshore salt-mist-resistant glass is improved, and the weather resistance of the salt-mist-resistant photovoltaic glass is improved.

This application discloses a composite material and its preparation method, a thin film, an optoelectronic device, and a display device. The composite material includes metal oxide nanoparticles and organic ligands attached to the metal oxide nanoparticles, wherein the organic ligands contain electron-withdrawing groups. In the composite material proposed in this application, oxygen vacancies are passivated, thereby giving the material fewer defects, better storage stability, and adjusting the electron transport properties of the material, making it suitable for more application scenarios.

A monolithic catalyst for steam reforming low-rank coal gasification tar uses in-situ grown Al2O3-coated wood semi-coke, resistant to gasification loss, as a support. NiMgAl-LDO metal oxide nanoparticles, obtained by the pyrolysis of in-situ grown NiMgAl-LDH-like layered double hydroxide nanosheets, are loaded as the active component. The active component accounts for 5%–10% of the total catalyst mass, the Al2O3 coating accounts for 10%–20%, and the Ni content (calculated as elemental Ni) accounts for 5%–20% of the total active component mass. This monolithic catalyst exhibits a multifunctional synergistic effect in the steam reforming reaction of low-rank coal gasification tar. It not only improves the problem of easy gasification loss of wood semi-coke and enhances its stability, but also enhances the dispersion of the supported active metal and improves the adsorption and activation performance of the reactants, demonstrating high catalytic activity and stability.

The application relates to the technical field of batteries, in particular to a self-supporting composite carbon film and a preparation method and application thereof; the self-supporting composite carbon film comprises a three-dimensional conductive framework, the three-dimensional conductive framework is formed by self-assembly and cross-linking of graphene oxide and zinc-containing metal organic framework derived carbon materials through the interaction between functional groups; lithiumophilic nucleation sites are uniformly distributed in the three-dimensional conductive framework, and the lithiumophilic nucleation sites comprise metal oxide nanoparticles contained in the zinc-containing metal organic framework derived carbon materials. Compared with the prior art, the application reduces the local current density and buffers the volume expansion through the three-dimensional porous conductive framework, and the lithiumophilic nucleation sites reduce the lithium nucleation overpotential, so that the uniform deposition of lithium ions is promoted, the lithium dendrite growth is inhibited, and the cycle stability and safety of the battery are improved.

This invention relates to a eutectic solvent-mediated fly ash-carbon-based composite catalyst, its preparation method, and its application. The catalyst utilizes a carbon-nitrogen co-doped porous carbon network as a carrier. The active component is derived from highly dispersed metal oxide nanoparticles derived from fly ash, which synergistically interact with the catalytic sites formed by the heteroatom-doped carbon framework, constructing a multi-active-site catalytic system. Using a eutectic solvent as both solvent and reactant, a three-stage graded carbonization process—sulfuric acid carbonization, microwave carbonization, and high-temperature pyrolysis carbonization—effectively encapsulates widely available and low-cost fly ash solid waste into a porous carbon network after activation, forming a loosely structured fly ash-carbon-based composite catalytic material with highly exposed active sites. When applied to CO2-rich liquid desorption, the catalyst enhances the proton-coupled electron transfer effect based on the synergistic effect between different components, promoting the decomposition of carbamates during CO2 desorption and significantly improving the desorption capacity and efficiency.

Provided is a feature that can contribute to the improvement of light emission performance. This display device 1 comprises a substrate 11, a positive electrode 12, a hole transport layer 15, a light-emitting layer 16, an electron transport layer 17, and a negative electrode 18, in that order. The light-emitting layer 16 is composed of quantum dots 16A, the electron transport layer 17 is composed of metal oxide nanoparticles 17A, and the average particle diameter R1 of the quantum dots 16A is smaller than the average particle diameter R2 of the metal oxide nanoparticles 17A.