77 results about "Copper oxide nanoparticles" patented technology

Nanocomposite copper-ceria catalysts are provided, which comprise copper oxide nanoparticles, copper nanoparticles, or a mixture thereof combined with ceria nanoparticles. Methods for making such catalysts are also provided, which involve the steps of (i) combining ceria nanoparticles in an aqueous suspension with copper 2,4-pentanedionate to form a slurry; (ii) heating the slurry formed in step (i) under an inert gas atmosphere or an oxygen-argon atmosphere, at a temperature and for a time sufficient to cause decomposition of the copper 2,4-pentanedionate to form copper nanoparticles and / or copper oxide nanoparticles that are combined with the ceria nanoparticles; and (iii) optionally, subjecting the product formed in step (ii) to a heat treatment process under conditions effective to convert at least some of the copper nanoparticles to copper oxide nanoparticles. The nanocomposite copper-ceria catalysts are useful for low-temperature and near-ambient temperature catalysis, such as the oxidation of carbon monoxide, the reduction of nitric oxide and the conversion of hydrocarbons. The nanocomposite copper-ceria catalysts have a variety of potential applications, for example, in vehicle exhaust emission systems of automobiles and diesel engines, cold starting of automobile engine, fuel cells, lasers, hydrocarbon conversion reactors, air filters for the conversion of carbon monoxide and / or indoor volatile organic compounds, and smoking articles.

The present invention provides a copper oxide-containing composition that includes copper oxide nanoparticles and one or more heteroatom donor ligands bonded to the surface of the nanoparticles, where x and y are numbers having a ratio that is equal to the ratio of the average number of M atoms to the average number of 0 atoms in the nanoparticles. The nanoparticles are stabilized by the one or more heteroatom donor ligands which act as a protective layer that cap the surface of the nanoparticles. The present invention also provides a solution of the copper oxide nanoparticles that may be applied to a substrate and then subsequently reduced to copper metal. Finally, the invention provides a method of preparing the copper oxide nanoparticles.

The present invention relates to a method of manufacturing cubic copper nanoparticles, and in particular, to a method including (a) mixing and agitating a copper precursor and an amine compound; (b) raising the temperature of the mixed solution up to 90-170° C. and reacting it at the same temperature; (c) adding the mixture to nonaqueous solvent to lower the temperature of the solution to 20-50° C. when the incubation completes; and (d) precipitating and obtaining the nanoparticles by adding an alcohol solvent to the mixture. According to the invention, while conductive wiring is formed metal nanoparticles can be manufactured not in sphere but in cubic shape so that void between particles can be efficiently removed and the height of wiring can be raised.

The invention provides a preparation method of a highly-dispersed copper-zinc catalyst for carbon dioxide reduction and a use method thereof. The preparation method comprises the steps of firstly, synthesizing a copper oxide nano-particle precursor with uniform particle sizes; then preparing a ZIF (Zeolitic Imidazolate Framework)-8 MOFs (Metal Organic Frameworks)-coated copper oxide composite nanomaterial through liquid phase synthesis; and calcining the nano material through temperature programming to obtain the nitrogen-doped carbon framework-coated highly-dispersed copper-zinc catalyst. The preparation method is characterized in that the copper oxide nano-particles are added in the process of preparing the ZIF-8 of the MOFs material, so that the copper oxide nano-particles are uniformly loaded in the MOFs in situ, the copper reduction and redispersion are implemented while the carbon framework-coated highly-dispersed zinc is obtained after high temperature calcination; a large amount of pyridine nitrogen is also present in the carbon framework; a novel preparation technology of a pyridine nitrogen-doped and carbon framework-supported highly-dispersed copper-zinc catalyst is developed; the catalyst is applied to the carbon monoxide hydrogenation reduction reaction to produce carbon monoxide, and has excellent catalytic activity; the highly-dispersed copper-zinc active sitesand the presence of a large amount of pyridine nitrogen have great promotion actions on improvement of the catalytic activity.

A method of making a copper oxide-titanium dioxide nanocatalyst for performing the catalytic oxidation of carbon monoxide is provided. The copper oxide-titanium dioxide nanocatalyst is in the form of copper oxide (CuO) nanoparticles supported on mesoporous titanium dioxide (TiO2) nanotubes. The copper oxide-titanium dioxide nanocatalyst is prepared by adding an aqueous solution of Cu(NO3)23H2O to an aqueous suspension of titanium dioxide nanotubes. Deposition precipitation at constant alkaline pH is used to form the copper oxide nanoparticles supported on mesoporous titanium dioxide nanotubes. Aqueous sodium carbonate is used to adjust the pH. The solid matter (copper oxide deposited on titanium dioxide nanotubes) is separated from the suspension, washed, dried and calcined, yielding the copper oxide-titanium dioxide nanocatalyst. Carbon monoxide may then flow over a fixed-bed reactor loaded with the copper oxide-titanium dioxide nanocatalyst at a temperature between 80° C. and 200° C.

The invention discloses a method for enhancing luminol chemoluminescence by using copper oxide nanoparticles and is characterized in that the method comprises the following steps of: firstly pumping a copper oxide nanoparticle colloid solution and a hydrogen peroxide solution into a mixer for mixing through peristaltic pumps respectively, then mixing with a luminol solution, loading the resulting mixture to a flow cell for reaction, and detecting chemoluminescence intensity by a photomultiplier tube. The copper oxide nanoparticles are added to the luminol-hydrogen peroxide system, so as to significantly enhance chemoluminescence signals. The luminol-hydrogen peroxide-copper oxide nanoparticle flow injection chemiluminescence detection can be applied to glucose content determination, with a linear range of 5 mumol / L to 60 mumol / L.

The invention provides a copper-based catalyst used in preparation of glycol by catalytic hydrogenation of oxalate ester and a preparation method thereof. The catalyst comprises 10 to 50 wt% of copper and 50 to 90 wt% of silica, and has a specific surface area of 200 to 1200 m<2> / g, a pore volume of 0.5 to 1.4 cm<3> / g, an average aperture of 1.5 to 15 nm and a particle size below 100 nm; copper oxide nanoparticles are cladded by a mesoporous silicon shell, and a core-shell structure is formed. The catalyst provided in the invention has the advantages of a small particle size, uniform particlesize distribution, good dispersibility, and high activity, high selectivity and a long life when used in preparation of glycol by catalytic hydrogenation of oxalate ester. The preparation method has the advantages of simple operation and high yield.

The invention relates to a porous nickel-copper oxide nanowire array enzyme-free glucose sensor electrode on a titanium substrate. The electrode is of a porous nanowire array structure formed by alternately assembling nickel-copper oxide nanoparticles on the titanium substrate, wherein single nanowire has the top-end diameter of 20+ / -1 nm and the length of 2+ / -0.2 mu m; the nanowires are vertically, uniformly and compactly distributed on the surface of titanium metal so as to form an array; the single nanowire is formed by alternately assembling copper oxide and nickel oxide nanoparticles with particle size of 5+ / -0.2 nm; and nanopores with size of 5+ / -0.2 nm are uniformly distributed in the nanowires. The preparation method comprises the steps of: placing a clean titanium metal sheet in an aqueous solution of copper chloride dihydrate, nickel chloride hexahydrate and urea, sealing and heating in an autoclave with polytetrafluoroethylene inner lining to 120 DEG C and maintaining for 24 hours; naturally cooling, and taking out the titanium metal sheet to obtain a precursor (Ni,Cu)2(OH)2CO3 nanowire array film of an electrode sample; and respectively annealing the precursor sample in air at 350 DEG C and 500 DEG C to obtain the sensor electrode. The obtained electrode can be applied to biological, medical, electronic instruments and other products.

The invention belongs to the field of low-dimensional nanomaterials and particularly relates to a preparation method of millimeter-scale single-layer single crystal graphene. The preparation method comprises the following specific steps: firstly, forming low-density copper oxide nanoparticles on the surface of a copper foil after the copper foil is annealed for a long time in the atmosphere of argon by optimizing annealing conditions of the copper foil and applying a chemical vapor deposition (CVD) method; secondly, introducing CH4 and H2, and growing out the millimeter-scale single-layer single crystal graphene by taking the copper oxide nanoparticles as nucleating points. The method is simple in preparation process, is suitable for industrial large-batch production, and has a broad application prospect.

The invention provides a synthetic method for chiral copper oxide nanoparticles, belonging to the technical field of synthetic chemistry. According to the invention, a reducing agent and chiral molecules act on a copper oxide precursor under a non-hydrothermal mild condition so as to form a monodisperse nano-sized copper oxide particle. The synthetic method comprises the following main steps: thesynthesis of the copper oxide precursor; and the synthesis of chiral copper oxide nanoparticles with different ligands. The synthetic method of the invention solves problems in the synthesis of chiralcopper oxide nanoparticles under non-organic-phase and non-hydrothermal conditions, and develops the synthetic technology for nano-scale chiral copper oxide nanoparticles with regular morphology. Inaddition, the synthesized chiral copper oxide nanoparticles are very stable and have broad biological application prospects.

An exhaust aftertreatment system that includes a suitable combination of particulate catalyst materials is used to effectively reduce an amount of NOX to N2 and water in a high-oxygen content exhaust flow from an engine that is controlled to operate by cyclically burning lean and rich mixtures of air and fuel. The catalyst materials of the exhaust aftertreatment system comprise (1) lanthanum-based perovskite oxide particles to oxidize NO to NO2, (2) barium oxide particles to temporarily store NO2, (3) copper oxide nanoparticles chemically deposited onto particles of cerium oxides to reduce NOX to N2 and to generate NH3, and (4) particles of a selective reduction catalyst to temporarily store NH3 and to reduce any residual NOX to N2 and water before the exhaust flow from the engine is discharged to the atmosphere.

The invention relates to a method for visual detection of an antigen-antibody reaction. The method is specifically characterized in that: copper oxide nanoparticle-labeled antibodies react with a sample requiring detection; surface functionalized gold nanoparticles are adopted to detect the copper oxide nanoparticles labeled on the antibodies so as to provide information related to the antigen-antibody reaction, and provide a new tool for the disease detection and the disease diagnosis based on the immunological reaction. With the method provided by the present invention, the detection can be completed by the naked eye without requiring any equipment, and the method is applicable for field work. The invention further provides an application of the method. The invention further provides a kit for the visual detection of the antigen-antibody reaction, and an application thereof.

The invention relates to an antibody labeling method, and especially relates to a method for labeling a copper oxide nano particle on an antibody through a simple physical absorption. The antibody labeling method of the invention has good universality; a reading mode of a detection needs no apparatus, and the reading can be finished by naked eyes; therefore, the method is suitable for field work. The invention also provides application of the antibody labeling method. The invention further provides a kit for antibody labeling and application thereof.

The invention relates to an axial circular pipe type screen heat pipe taking copper oxide nanoparticle suspension as working substance, which consists of an evaporation section, a thermal insulation section and a cooling section, wherein, the thermal insulation section is externally covered with a Teflon stick to make thermal insulation, the cooling section is externally welded with a cooling water jacket, the inner wall of the evaporation section is provided with a screen liquid-absorbing core structure, the working substance filled inside the screen liquid-absorbing core structure is copper oxide nanoparticle suspension, and the fluid filling rate is 40 to 60 percent of the volume of the evaporation section. The copper oxide nanoparticle suspension is the mixing liquid of de-ionized water and copper oxide nanoparticles, and the mass concentration of the copper oxide nanoparticles in the suspension is between 0.5 and 2 percent. During the use, the element which needs to make a heat radiation is pasted on the lower end of the heat pipe, the heat of the element which needs to make a heat radiation is transferred to the cooling section depend on the evaporation heat transfer of the working substance inside the grooved heat pipe, the working substance in the cooling section condenses the heat transfer to transfer the heat into condensed water. After the invention uses the water based copper oxide nanoparticle suspension as the working substance, the heat exchange performance is improved, and the total heat resistance of the heat pipe is decreased.

The invention discloses a porous ceramic material with a composite function as well as a preparation method thereof. The porous ceramic material consists of an inorganic porous matrix and a composite-function film which is formed by spray-coating the surface of the inorganic porous matrix with composite-function sol; and the composite-function film is prepared from titanium dioxide, a functional additive and an acidic aqueous solution; the functional additive is selected from two or more complexes with different functions of zinc oxide nanoparticles / clusters, copper oxide nanoparticles / clusters, silver halide nanoparticles / clusters, bismuth vanadate nanoparticles / clusters, graphite-phase carbon nitride nanoparticles / clusters, silver / copper nanocrystals, gallic acid, polyvinyl alcohol and polyethylene phenol. The porous ceramic material with the composite function, which is provided by the invention, belongs to a solid-phase supported catalyst, overcomes the problems that a subparticlecatalyst is difficult to recover and troublesome to reuse and can realize adsorption and decomposition of organic pollutants such as dye and formaldehyde.

The invention provides a hollow porous cuprous oxide-copper oxide-ferric oxide cubic lithium ion battery anode based on three-dimensional porous copper skeleton in-situ growth. The battery anode is composed of a three-dimensional porous copper skeleton and hollow porous cuprous oxide-copper oxide-ferric oxide cubes, the hollow porous cuprous oxide-copper oxide-ferric oxide cubes are cubes which are of a hollow porous structure and is formed by assembling cuprous oxide nanoparticles and copper oxide nanoparticles, wherein the cuprous oxide nanoparticles and the copper oxide nanoparticles are formed by partially oxidizing the surfaces of ferric oxide nanoparticles and the three-dimensional porous copper skeleton in situ. The hollow porous cuprous oxide-copper oxide-ferric oxide cubes are uniformly distributed on the surface of the three-dimensional porous copper skeleton. The invention also provides a one-step preparation method of the anode. The lithium ion battery anode provided by theinvention can effectively buffer the volume change of the lithium ion battery in the charge-discharge process, prevent the active component from falling off in the charge-discharge process of the lithium ion battery, and significantly improve the specific capacity and cycle performance of the lithium ion battery anode.

The invention discloses a preparing method and application of a self-dispersal nanometer copper oxide complexing body, and belongs to the technical field of inorganic nanometer material synthesis. The method comprises the steps that copper acetate and the macromolecule complexing body are dissolved in ethyl alcohol to build an even macromolecule complexing body, the obtained mixed solution is heated until ebullition and added with water dropwise, when the solution turns from green to brownish black, an appropriate alkaline solution is added into the solution dropwise to conduct neutralization, the reaction is conducted for a certain time, and the nanometer copper oxide complexing body is obtained. According to the preparing method, the particle size of a synthetized copper oxide nanometer particle is between 2 nm and 6 nm, the particle has good dispersity in an aqueous solution, the dispersoid is applied to textile finishing without the need of adding adhesive, and the obtained product has excellent and lasting antibiotic property.

The invention relates to a kit for detecting glypican-3 (GPC3) based on catalytic property of copper ions and a detection method. The kit mainly comprises an antibody-functionalized copper oxide nanoprobe and a reagent for detection. The antibody-functionalized copper oxide nanoprobe is prepared by copper oxide nanoparticle surface modification of GPC3 antibody and confining by the use of BSA (Bovine Serum Albumin), wherein mass ratio of the copper oxide nanoparticle to the antibody is 1:0.0015-0.03. The reagent for detection is composed of a coating buffer, a washing liquid, a confining liquid, a developing solution and a stop buffer. The invention mainly has the following beneficial effects: detection of protein is realized by the utilization of catalytic property of copper ions; and the detection method is simple and economical, has good effects, and requires no use of high-cost bio-enzyme which is sensitive to the environment.

The invention discloses a purification treatment method of volatile organic compounds (VOCs) waste gas. The method comprises the following steps: (1) an alkali liquor absorbs equivalent VOCs waste gasthrough two-stage spraying, an adsorption reaction is carried out on the gas phase subjected to the treatment, and reutilization treatment is carried out on the liquid phase subjected to the treatment; (2) the gas phase subjected to the treatment reaches an emission standard through specific three-stage adsorption, and reutilization treatment can be carried out on non-woven fabric bags after thethree-stage adsorption treatment; and (3) specific adjustment is carried out on the liquid phase subjected to secondary spraying treatment, so that VOCs dissolved in the liquid phase overflows, and combustion treatment is carried out on the overflowed VOCs, the non-woven fabric bags subjected to the three-stage adsorption treatment, zeolite powder and copper oxide nanoparticles in a combustion area. The method provided by the invention has the advantages of reducing cost.

The invention relates to a preparation method for loading copper oxide nanoparticles on the surface of an in-situ synthesized carbon nanotube. The preparation method comprises the following steps: (1)preparation of a mixed solution of a carbon nanotube and a copper sulfate crystal; (2) chemical precipitation on the surface of the carbon nanotube to obtain a copper oxide / copper hydroxide mixture:heating the mixed solution of carbon nanotube and copper sulfate to 90-100 DEG C, dropwise adding a sodium hydroxide solution with the concentration of 1-2 mol / L after the mixed solution is heated to90-100 DEG C, carrying out suction filtration and washing on the mixed solution after the reaction is completed, and carrying out drying treatment on mixed powder obtained after suction filtration; and (3) annealing treatment of the mixed powder: putting the dried powder in a muffle furnace for annealing treatment at a temperature of 300 DEG C to 400 DEG C, carrying out heat preservation for 2 h to 3 h, then carrying out cooling to room temperature with the furnace cooling after heat preservation is completed so as to obtain the CuO@CNTs composite material.

The invention discloses a method for producing a high-specific-capacity shuttlelike copper oxide electrode material. The method comprises the steps of adding soluble carbonate and triethylamine to a copper saline solution, and conducting ultrasonic dispersion and microwave treatment, so that copper oxide nanoparticles having the special shuttlelike appearance are obtained. The method is high in efficiency, simple and easy to operate and meets the industrial production requirements; the obtained shuttlelike copper oxide nanoparticles have the advantages of being high in purity, uniform in particle size, excellent in electrochemical performance and have wide application prospect in the field of supercapacitor electrode materials.

The invention relates to a method for improving oil absorption performance of polypropylene fibers by utilizing super-hydrophobic modification. The method comprises the following steps: S1, dissolvingcopper oxide particles in a solvent, dispersing the copper oxide particles under the action of ultrasonic waves to form a uniform copper chloride solution, soaking polypropylene fibers into the copper chloride solution, and after a continued ultrasonic action, uniformly depositing copper oxide nanoparticles on the polypropylene fibers; S2, taking out the polypropylene fibers obtained in the stepS1 from the copper chloride solution, cleaning the polypropylene fibers, putting the polypropylene fibers into an oven, and continuously heating and curing the polypropylene fibers at 60 DEG C, 70 DEGC and 80 DEG C to obtain polypropylene fibers with rough nano surfaces; and S3, preparing a palmitic acid solution with a certain concentration by using an organic solvent, immersing the polypropylene fibers obtained in the step S2 into the palmitic acid solution for a curing reaction, then fully washing the modified polypropylene fibers with an alcohol solvent, and then putting the modified polypropylene fibers into a drying oven for heating and drying at 60-80 DEG C to obtain the super-hydrophobic modified polypropylene fibers.

The invention relates to a preparation method for a positive electrode interface material of a polymer thin film solar cell and belongs to the technical field of the solar cell. A positive electrode interface layer is composed of copper oxide nanoparticles prepared by an ultrasonic preparation method. The capability for transferring and collecting the charge of the copper oxide thin film is improved after the ultraviolet and ozone treatment. The more excellent performance can be achieved by a device adopting the copper oxide nanoparticle thin film as the positive electrode interface layer, and the power conversion efficiency is improved to 6.44% from 6.00%. The preparation method for copper oxide nanoparticle thin film has the advantages that the preparation method is simple in technology, low in cost and high temperature treatment is not needed, and the poor device stability caused by the PEDOT: PSS interface layer is solved. The copper oxide nanoparticle thin film can be used for replacing PEDOT: PSS completely and further applied to the field of the polymer thin film solar cell as the positive electrode interface material.

The invention discloses a production method for a black PVDF film. The method includes the steps of: (1) mixing the following materials by mass percentage: 40%-45% of polyvinylidene fluoride, 10%-12% of polymethyl methacrylate, 20%-27% of black polyester masterbatch, 2%-5% a silane coupling agent, and 5%-15% of a fluorine-containing active dispersing agent; (2) mixing the materials evenly, then adding 2%-5% by mass of copper oxide nanoparticles, fully mixing the mixture evenly and conducting drying; (3) performing first fusion on the dried material, and conducting cooling under air flow; (4) conducting secondary fusion on the cooled material, and cooling the melt on a casting sheet roller; and (5) preheating the cooled material, and carrying out longitudinal and transverse stretching. The method provided by the invention can effectively promote dispersion of copper oxide, improve the effect of copper oxide in the film, and make the film surface atoms combine closely, thereby obtaining high strength.

The invention discloses a semiconductor sensor and a testing circuit of hydrogen sulfide gas.A tungsten trioxide nano material prepared by a chemical method is adopted as a precursor of the semiconductor sensor, and a composite structure of copper oxide nanoparticles is modified on the surface of the precursor.a gas-sensitive element is of a heater-type structure, sensitivity of the semiconductor sensor is 105 at 55 DEG C, and the semiconductor sensor has high selectivity.Through single phase to modulate voltage, response restoration time can be controlled within 65 seconds.The semiconductor sensor has high sensitivity, high selectivity and capability of realizing quick response and restoration at low temperature.