624 results about "Copper(I) oxide" patented technology

The invention discloses a preparation method of nano cuprous oxide. In the method, copper chloride and copper nitrate are taken as copper sources, hydrazine hydrate, glucose and an ascorbic acid and the like are taken as reducing agents, and cuprous oxide materials in the shape of an octahedron, a hollow sphere, a cube and a hollow cube and the like are successfully obtained by using a liquid-phase reduction method and a hydrothermal method. Required raw materials for preparation are rich, the cost is low, and no waste is produced. The preparation process is simple, and the repeatability is good. Cuprous oxide nano-materials have wide applications in the aspects of photocatalysis, gas-sensing materials, antibacterial materials, and the like.

The invention provides an activated carbon-loaded cuprous oxide photocatalyst which can be used as a photocatalyst for degrading the organic pollutant such as phenols and purifying the air, wherein a preparation method of the activated carbon-loaded cuprous oxide photocatalyst comprises the following steps of: dipping the treated activated carbon in copper sulfate solution, and reducing by C6O12O6 or Na2SO3. The invention has the beneficial effects that the preparation of the activated carbon-loaded cuprous oxide photocatalyst takes copper sulfate as raw material, takes the activated carbon as a carrier, and loads the cuprous oxide on the activated carbon, so that the photocatalyst is simple in preparation method, low in cost, good in stability, and high in photocatalytic activity. The photocatalyst can be directly used for catalytically oxidizing the waste water such as the phenols and purifying the indoor air under an ultraviolet-visible light condition, so that the method is easy to operate, mild in reaction condition, and high in pollutant removing ratio.

A process for synthesizing the cuprous oxide nanoballs includes such steps as dissolving the Cu salt in water-soluble organic solvent, sequentially adding non-ionic surfactant and strong reducer, and reflux at 70-90 deg.C in an open system to obtain quasi-single-dispersed cuprous oxide nanoballs. Said cuprous oxide can be self-assembled on silicon chip or electrically conductive glass to form 2D or 3D structure for meeting the requirement of solar cell or microelectronic device.

The invention discloses copper red glaze and a production method thereof, and a method for preparing a ceramic product therefrom. The copper red glaze is prepared from parent glaze, a coloring agent and a stabilizing agent, wherein the parent glaze is prepared from the following components in parts by weight: 26 to 32 parts of quartz, 24 to 30 parts of feldspar, 10 to 14 parts of limestone, 12 to16 parts of barium carbonate, 4 to 8 parts of clay, 0 to 4 parts of zinc oxide and 0 to 4 parts of sodium borate; the coloring agent is one or a mixture of a plurality of copper oxide, cuprous oxide and copper carbonate, and the adding amount of the coloring agent is 1 to 4 parts by weight; the stabilizing agent is one or a mixture of a plurality of stannic oxide, ferric oxide, lead oxide and silicon carbide, and the adding amount of the stabilizing agent is 3 to 6 parts by weight. According to the invention, the copper red glaze is bright crimson red, the ceramic product produced from the copper red glaze has high yield and low cost, and can be used for producing domestic ceramic and display art ceramic products.

The invention relates to cuprous oxide nano hollow spheres and a synthetic method thereof. The synthetic method comprises the following steps of: (1) dissolving a cupric salt in an organic solvent, and controlling the copper ion concentration at 0.01-0.6mol/L; (2) transferring the solution obtained in the step (1) into a reaction vessel, sealing the reaction vessel, putting the reaction vessel into a reaction environment in which the temperature is 120-200 DEG C, performing thermal reaction for 0.5-8 hours, and cooling the reaction vessel naturally; (3) separating the solid obtained in the step (2), washing and drying to obtain the cuprous oxide nano hollow spheres. According to the synthetic method, the cuprous oxide nano hollow spheres are prepared through a one-pot hydrothermal synthesis under the condition that any surfactant is not added; the prepared nano spheres with unique hollow structures have excellent dye adsorption capacity and lithium ion battery performance.

The invention provides a dual-layer-coated nanometer silicon negative electrode material and a preparation method and an application thereof. The negative electrode material comprises silicon-based nanoparticles, a copper layer for coating the surfaces of the silicon-based nanoparticles, and a conductive protection layer for coating the surface of the copper layer. The nanometer copper has super-plastic extensibility and conductivity; in addition, the existing calculation already proves that lithium ions can penetrate through the nanometer copper, so that the copper coating layer can suppress volume expansion of the silicon-based nanoparticles and keep the silicon-based nanoparticles not cracked; therefore, direct contact between the silicon-based nanoparticles and an electrolyte can be avoided effectively, thereby forming a stable SEI and improving conductivity of an electrode; however, the nanometer copper is easily oxidized to form copper oxide and cuprous oxide to form an adverse SEI on the surface; and therefore, the surface of the nanometer copper is coated with the conductive protection layer so as to effectively suppress oxidization of the nanometer copper, thereby improving electrochemical performance.

The invention discloses a catalyst produced by using copper oxide powder and a production method thereof. The catalyst comprises copper oxide powder and electrolytic copper powder as initial raw materials, and produced by mixing, reducing, crushing, oxidating, sieving, and grinding. The catalyst has the characteristics of porosity and large specific surface area, and has the properties of metal copper, cuprous oxide, and copper oxide. The catalyst containing metal copper, cuprous oxide, and copper oxide has high binary selectivity and high reaction activity. According to the invention, the problems of unstable quality of raw material CuSO4.5H2O used in ternary copper catalyst produced by using chemical method, complicated production technology, unstable quality of finished products and the like are solved, and the adverse factors of containing high content of S in the product of ternary copper catalyst produced by using chemical method, and causing damage to producer and user and environment are overcome.

The invention discloses a preparation method of zinc oxide/ cuprous oxide heterojunction, aiming at solving the technical problem that the existing preparation method of zinc oxide/ cuprous oxide nano-heterojunction photocatalytic material is complicated in technology. The preparation method adopts the technical scheme comprising the steps of: carrying out ultrasonic cleaning on a flexible indium tin oxide (ITO) substrate; weighing Zn (NO3)2. 6H2O and hexamethylene tetramine; dissolving the weighed Zn (NO3)2. 6H2O and hexamethylene tetramine into deionized water to prepare electrolyte; carrying out electrochemical deposition on an electrochemical working station, wherein the flexible ITO substrate is a working electrode, and a platinum sheet is a counter electrode; controlling the deposition temperature to be 40-70 DEG C and the cross potential to be -1.3 to -1.6V to obtain a ZnO nanorod array; washing and drying; adopting CuSO4 and citric acid to prepare electrolyte; carrying out electrochemical deposition on the electrochemical working station, wherein the flexible ITO substrate is the working electrode, and the platinum sheet is the counter electrode; controlling the deposition temperature to be 40-70 DEG C and the cross potential to be -0.5 to -0.6V; and depositing Cu2O on a ZnO nanorod to obtain the ZnO/ Cu2O heterojunction. The zinc oxide/ cuprous oxide heterojunction is prepared by an electrochemical deposition method under the conditions of the flexible ITO substrate and the low temperature, so that the method is simple.

The invention discloses a preparation method of a molybdenum disulfide/copper sulfide/cuprous oxide nano-composite material. The preparation method comprises the steps of adding copper oxide into deionized water, stirring to form a mixture, adding sodium molybdate dihydrate, thiourea and CTAB, maintaining the temperature of a sample at a hydrothermal temperature of 220 DEG C for 24 hours, washing a product for five times by virtue of deionized water and ethanol, putting the product into a vacuum drying oven, and drying at a temperature of 60 DEG C, so as to obtain the molybdenum disulfide/copper sulfide/cuprous oxide nano-composite material. The molybdenum disulfide/copper sulfide/cuprous oxide nano-composite material prepared by virtue of a hydrothermal method has the characteristics of simple preparation process, good material crystallinity, high sample uniformity and the like. A formed nano-composite structure has semiconductor heterojunction features and is capable of inhibiting the compounding of light-generated electrons and holes and promoting the separation of the electrons and the holes, so that the nano-composite material has wide application prospects in the fields of photocatalysis and photovoltaic cells.

The invention discloses a P-typed doped cuprous oxide film material, which comprises the following steps: setting the doped density of nitrogen in the film at 1X1015cm-3-5X1019cm-3 with one cuprous oxide phase and molecular formula at Cu2O: N; adopting DC reacting magnetic control sputtering method to prepare, common carrier as substrate, red copper disc with purity at 99. 99% as target material; setting argon gas and oxygen, nitrogen as the working gas and reacting gas separately with gas purity at 99. 999%; making the flow rate of oxygen and nitrogen at 3: 2 and the bottom pressure of sediment chamber at 1. 2X10-3Pa-1. 0Pa; setting the substrate temperature between normal temperature and 100 deg. c and sputtering pressure at 400V with current at 50mA and power at 20W; depositing the film for 20min.

The invention discloses a graphene/chitosan/cuprous oxide composite material and a preparation method and applications thereof, which belong to the technical field of visible light catalytic materials. The composite material mainly comprises graphene, chitosan and cuprous oxide, wherein the graphene has extremely good electron capture and transmission performances, and as a carrier of photo-generated electrons, the graphene reduces the recombination rate of photo-generated electrons and holes of the cuprous oxide; by using the excellent adsorption property of the graphene to organic pollutants, the photocatalytic efficiency of a photocatalyst is improved; a good synergistic effect exists among the composited chitosan, the graphene and the cuprous oxide, and while the adsorption effect of the catalyst is improved, the degradation performance of the visible light catalyst to organic pollutants is improved. Under same conditions, compared with cuprous oxide, and cuprous oxide/chitosan, the graphene/chitosan/cuprous oxide composite material shows higher adsorption capacity and photocatalytic properties.

The invention discloses a preparation method and application of cerium-zirconium composite oxide catalyst loaded with copper oxide. The preparation method comprises the following steps of: dissolving Cu salt, Ce salt and Zr salt in deionized water, slowly and dropwise adding the deionized water into dilute ammonia water, heating by microwave, depositing, filtering, washing, drying by microwave and baking at high temperature to obtain the cerium-zirconium composite oxide catalyst loaded with copper oxide. Compared with the preparation method of traditional catalysts, the preparation method of the catalyst has the advantages that the preparation process is simple, the working hour is short, and CuO as an active component is highly dispersed on the surface of a carrier. The catalyst prepared by using the preparation method has very high anti-sintering capability and heat stability and has higher activity for CO catalytic oxidation reaction.

The invention discloses a method for synthesizing micron-nano-sized cuprous oxide micropowder. The method comprises the following steps of: reducing copper sulfate into cuprous oxide under a sodium hydroxide alkaline condition by using glucose as a reducing agent, namely mixing copper sulfate solution and sodium hydroxide solution and reacting for a certain time at a certain temperature and adding the glucose serving as the reducing agent to obtain cuprous oxide powder with a certain shape. The shape and the size of the product, namely the cuprous oxide, can be stably and simply controlled by controlling the mixing and reacting temperature and time.

The invention relates to a preparation method for cuprous oxide micron/nano crystal with controllable morphology, relating to the preparation method for the cuprous oxide micron/nano crystal. The invention mainly solves the technical problems of high cost and environmental pollution in the preparation process of the micron/nano cuprous oxide. The method comprises the following steps of: 1, dissolving copper salt into ultrapure water, pouring lactic acid, continuously stirring, regulating a pH value, cooling to the temperature of 25 DEG C, keeping constant volume, measuring the pH value, and obtaining solution A; 2, moving the solution A to a hydrothermal reaction kettle, sealing the reaction kettle, putting the hydrothermal reaction kettle into a drying oven, keeping the temperature, naturally cooling to a room temperature, centrifugally washing by using the ultrapure water, centrifugally washing by using anhydrous ethanol, transferring the reaction kettle onto watch glass, and drying the reaction kettle in the drying oven; and thus obtaining the cuprous oxide micron/nano crystal. The preparation method for the cuprous oxide micron/nano crystal with the controllable morphology has the advantage of simpleness and practicability, simple equipment operation, low raw material price, easy synthesis, less pollution to environment and high synthetic concentration, the problem of the cost of the morphology control and industrialized large-scale synthesis in the prior art is solved, and the industrial production is facilitated.

The invention discloses a preparation method of carbon-coated cuprous oxide and a carbon-coated cuprous oxide. The method comprises the following steps: stirring a liquid acrylonitrile low polymer solution to form a microcyclized acrylonitrile low polymer solution; carrying out heat treatment to form a polyacrylonitrile low polymer; mixing the polyacrylonitrile low polymer subjected to thermal oxidation and copper compound, adding a hydrophilic solvent or hydrophobic solvent, and uniformly mixing to obtain an acrylonitrile low polymer coated copper compound; drying the obtained acrylonitrile low polymer coated copper compound in a drying oven to obtain a low-temperature carbonized precursor coated copper compound; and obtaining the carbon-coated cuprous oxide in an inert protective atmosphere. The carbon-coated cuprous oxide has the advantages of simple equipment and technique, low cost, high purity, high yield, uniform particle size distribution, favorable appearance and the like. The porous carbon layer coated outside the cuprous oxide can effectively control the release rate of the cuprous oxide, and thus, the carbon-coated cuprous oxide can be used as an antifoulant additive for marine antifouling paint.

The invention provides a method for preparing a composite sintered neodymium-iron-boron permanent magnet material added with gadolinium, holmium and yttrium. The method includes the steps of primary batching, fusion casting, milling, secondary batching, powder mixing, forming, sintering and heat treatment, wherein in the primary batching step, iron alloy added with three rare earth elements of the gadolinium, the holmium and the yttrium is composited, and in the secondary batching step, oxide added with the three rare earth elements of ultrafine gadolinium, holmium and yttrium and cuprous oxide powder are composited. By the method, the relative surplus and cheap gadolinium, holmium and yttrium can be used for partially substituting for rare earth elements of neodymium, praseodymium or dysprosium, and accordingly neodymium, praseodymium or dysprosium consumption can be decreased by 10-30wt.%. Besides, Curie temperature and coercivity force of the prepared neodymium-iron-boron permanent magnet material are increased, corrosion resistance is enhanced, operating temperature and toughness are increased, and processability is improved.

A nanometer copper-protoxide coated with organic polymer, characterized in that the grain diameter of copper-protoxide particles is from 1 to 100nm, and that the surface is coated with organic polymer, range of weight ratio of copper-protoxide particle to organic polymer being 60-90: 0.1-18. In the water solution of organic polymer, and with alkali halide and alkali weak acid salt, deoxidize divalent nantokite with reducer, and separate the resultant, the reaction temperature of said reaction being from 10 to 100 Deg. C, reaction time from 1 to 8 hours, and PH of the reaction liquid from 5 to 7. The advantage of the nanometer copper-protoxide coated with organic polymer is that, manufacturing technique is simple, and facilitated to industrialization, at the same time, the easily-reuniting problem of nanometer particulars is settled; it has a good dispersity in anti-fouling paint, a strong power of oxidation resistance, extensive and strong antifouling ability, and cohesion to paint filming material to make perfect mechanical property of paint.

The invention relates to a cuprous oxide-titanium dioxide composite structure and a preparation method thereof. The cuprous oxide-titanium dioxide composite structure is characterized in that cuprous oxide hollow nano-spheres are taken as a kernel, and amorphous titanium dioxide is taken as a shell to coat an outer layer of cuprous oxide. The structure can be applied to a heterogeneous catalyst for preparing methane from carbon dioxide in a photocatalytic reduction manner, and the catalytic efficiency of a product is obviously higher than that of pure cuprous oxide hollow spheres. The preparation method comprises the following steps: (1) preparing cuprous oxide hollow spheres of different sizes by virtue of a soft template growth method; and (2) growing amorphous titanium dioxide on the surface of cuprous oxide by virtue of hydrolytic action of tetrabutyl titanate. The preparation method is simple and feasible and is good in repeatability; the prepared hollow sphere structure is good in monodispersity, and the thickness of a titanium dioxide shell layer can be controlled by regulating the ratio of reactants.

The invention discloses a sulfur-doped three-dimensional porous cuprous oxide nano-material and application thereof to electrochemical hydrogen evolution reaction. A cuprous sulfide nano-rod is synthesized on three-dimensional copper foam as a precursor mainly by virtue of a normal temperature impregnation method, and the sulfur-doped porous cuprous oxide nano-material is obtained in an electrochemical preparation process. The sulfur-doped three-dimensional porous cuprous oxide nano-material is mainly applied to electrochemical hydrogen evolution, the catalytic activity is detected by adopting a linear scanning curve (polarization curve), and the stability of the material is tested by virtue of a cyclic voltammetry curve. According to the sulfur-doped three-dimensional porous cuprous oxide nano-material, a porous Cu2OxS(1-x) nano-structure is synthesized by a method which is convenient to operate to enlarge the specific surface area of the material, copper is combined with oxygen to collaborate active sites around the copper and improve the adsorbability of the copper for hydrogen, and anionic sulfur is further doped to greatly improve the catalytic activity of the material, improve the catalysis efficiency of electrochemical hydrogen evolution and effectively improve the stability of the catalyst.

The invention relates to a size-controllable palladium-cuprous oxide nano-catalyst, a preparation method of the catalyst, and catalysis application in preparation of ethylene through acetylene selective hydrogenation. The preparation method comprises the following steps: putting cuprous oxide nanocrystalline in a glass container, dropwise adding a palladium precursor solution with a weight ratio of Pd/Cu2O of 0.001-10 percent, continuously stirring, and continuously stirring for half a hour after the solution is ended; and centrifugally separating an obtained product, washing with absolute ethyl alcohol and ultrapure water for multiple times, and finally drying in vacuum. The size controllable palladium-cuprous oxide nano-catalyst shows excellent activity, selectivity and stability in catalytic reaction of the preparation of the ethylene through the selective hydrogenation of the acetylene. The preparation method disclosed by the invention is simple and convenient, and is free from harmful and side products. By controlling the sizes of palladium nano particles loaded in the cuprous oxide, the selectivity of reaction products in the selective hydrogenation of the acetylene can be controlled, and the reaction conversion rate is increased.

The invention relates to zinc oxide/cuprous oxide nano heterojunction photocatalytic material, wherein the zinc oxide has the molecular formula of ZnO, and the cuprous oxide has the molecular formula of Cu2O. The ZnO/Cu2O nano heterojunction photocatalytic material comprises a silicon substrate, a Cu2O film and ZnO nano rods, wherein the Cu2O film is deposited on the silicon substrate, and the ZnO nano rod grows on the liquid phase of the Cu2O film. The method for preparing the ZnO/Cu2O nano heterojunction photocatalytic material comprises the following five steps: (1) preparing a substrate; (2) vacuumizing a sputtering film forming cavity; setting all parameters of a magnetically controlled sputtering device and depositing a Cu2O thin film layer; (4) obtaining a Cu2O thin film after stopping the magnetically controlled sputtering device for 30min; and (5) vertically putting the silicon substrate on which the Cu2O thin film is deposited into a beaker containing the mixed solution of zinc acetate and hexamethyleneimine, putting the beaker in a water-bath kettle to preserve heat for 6 hours, taking the beaker out of the water-bath kettle, cooling the beaker to room temperature, cleaning the beaker with deionized water, and drying the beaker at room temperature to obtain the growing ZnO nano rod array. The invention has wide use value and application prospect in the field of the preparation technology of the nano heterojunction photocatalytic material.

The invention discloses a preparation method for a copper/cuprous oxide/cyclized polyacrylonitrile visible-light-driven photocatalyst, and belongs to the technical field of environmental cleaning photocatalyst new materials. The preparation method includes the steps of firstly, preparing a nanometer copper hydroxide/photocatalyst compound by synchronously conducting solvent conversion and in-situ ion exchange reaction with photocatalyst, cupric nitrate and sodium hydroxide as raw materials; secondly, reducing copper hydroxide into cuprous oxide in situ through ascorbic acid; thirdly, conducting thermal treatment under the nitrogen atmosphere, reducing a small amount of cuprous oxide into elementary substance copper while cyclization and dehydrogenation are conducted on polyacrylonitrile to form a conjugated structure, and obtaining the copper/cuprous oxide/cyclized polyacrylonitrile visible-light-driven photocatalyst. The raw materials are wide in source, cost is low, the preparation method is simple and suitable for large-scale production, cyclized polyacrylonitrile can improve the separation efficiency of photoproduction electron holes and absorption of the visible light areas and can have a protection and optical corrosion reduction effect on copper/cuprous oxide, and the obtained catalyst is remarkable in adsorption and photocatalytic effect.

The invention discloses a catalyst produced through water atomization and a manufacturing method thereof. The catalyst is prepared by melting a cathode electrolytic copper plate serving as a primary raw material at high temperature, performing high water pressure spray atomization, precipitation, high-temperature drying oxidization, selection and ball milling oxidization on the copper plate. Besides the characteristics of multiple pores, and large specific surface area of a traditional elemental sheet copper powder catalyst, the catalyst also has the property of containing three element components, namely copper, cuprous oxide and copper oxide. Due to the characteristics of multiple pores, sheet shape and large specific surface area, absorption and contact area between the catalyst and silica powder are increased, more Si and Cu alloy and eta phase can be formed, and the reaction activity of a contact is improved. The disadvantages that the content of S in the three-element copper catalyst produced by a chemical method using CuSO4.5H2O as a raw material is relatively high and the S does harm to producers, users and environments are overcome. The catalyst is continuous in production way, good in controllability and stable in quality.