29results about "Copper oxides/halides" patented technology

The application discloses a kind of foam nickel supported copper-cobalt bimetallic composite catalyst and preparation method and application, belong to electrocatalytic material technical field.CuSO4·5H2O, CoSO4·7H2O and C6H5Na3O7 are mixed and using constant voltage deposition method is loaded on foam nickel substrate, and CuCo / NF precursor is obtained, and copper-cobalt bimetallic composite catalyst Cu x O-Co3O4 / NF with excellent catalytic activity and stability is successfully prepared by temperature programmed calcination.The application significantly enhances the adsorption capacity of nitrate molecules on the catalyst surface by utilizing the synergistic effect of Cu and Co, reducing the incidence of side reactions, thereby improving the catalytic efficiency of nitrate reduction reaction.Compared with traditional single catalyst, it shows higher ammonia yield, Faraday efficiency (FE) and better stability, and has broad application prospect.

A method and system for converting copper cyanide to copper oxide is provided. The method includes contacting a copper cyanide solution with an acidic solution in a precipitation tank under reaction conditions sufficient to produce a copper cyanide slurry, removing the copper cyanide slurry from the precipitation tank, separating solid copper cyanide from the copper cyanide slurry in a first separation device, removing the solid copper cyanide from the first separation device, contacting the solid copper cyanide with a sodium hydroxide solution in a production tank under reaction conditions sufficient to produce a copper oxide slurry, removing the copper oxide slurry from the production tank, separating solid copper oxide from the copper oxide slurry in a second separation device, and removing from the second separation device any residual sodium hydroxide not reacted during the process of contacting the solid copper cyanide with the sodium hydroxide solution in the production tank.

To obtain cuprous oxide with appropriate performance. [Solution] The method for producing cuprous oxide includes the steps of: obtaining copper ink, which is a liquid composition containing copper particles (S10); forming a film on a substrate by coating or printing the copper ink (S12); producing cuprous oxide on a substrate by drying the film formed on the substrate with copper ink, and then heating it by irradiating it with light in the visible to infrared wavelength range in an atmosphere with an oxygen concentration of 10% to 21% (S16); and heating the cuprous oxide in an atmosphere with an oxygen concentration lower than the oxygen concentration at which the copper particles were oxidized and sintered (S18).

The application provides a copper electrode based on a UiO-66-NH2 metal organic framework film, and a preparation method and application thereof, and relates to the fields of electrocatalysis and new energy materials. The electrode is composed of a rough metal copper substrate (rCu) and a continuous and uniform dense film of UiO-66-NH2 on the surface, the rCu is prepared by chemical oxidation of a commercial copper foil to generate CuO nanosheets and then electrochemical reduction, and the film is grown by cathodic electrodeposition for 20 minutes. The electrode is applied to the electrocatalytic reduction of nitrate to synthesize ammonia in a neutral medium, the enrichment of hydrated potassium ions in the film, the reconstruction of the interface water to build a rich-proton limited microenvironment, and the reduction of the activation energy of the rate-determining step. In a continuous flow system, the electrode can be stably operated at a current density of 800 mA cm ‑2 for more than 40 hours, and high-purity ammonium chloride can be recovered, so that the problems of insufficient proton supply, low selectivity and low activity in the prior art are solved.

A method for recycling silver from a waste IC chip include: heating to disassemble an IC chip, and crushing the IC chip into powders; adding the powders to a nitric acid solution, heating, centrifuging and collecting a first filtrate; adding soluble starch to the first filtrate, where a mass concentration ratio of the soluble starch to Fe in the first filtrate is 5.20-7.30; heating a resulting mixture to 130-175° C. for a first hydrothermal reaction, separating a precipitate from the first hydrothermal reaction and collecting a second filtrate; heating the second filtrate to 160-230° C. for a second hydrothermal reaction, separating a solid from the second hydrothermal reaction and collecting a third filtrate; drying, grinding, and sieving the solid to obtain silver powders; and adding alkali to the third filtrate to form a precipitate of Cu, and separating the precipitate to yield copper hydroxide.

The application discloses a method for realizing electrocatalytic reduction of CO2 by using ion liquid cooperated with ionomer modified copper-based catalysts, and adopts a wet chemical synthesis method, selects copper sulfate, lactic acid, sodium hydroxide, ascorbic acid and hexadecyl trimethyl ammonium chloride as materials to synthesize Cu2O copper-based catalysts, introduces ion liquid cooperated with ionomer modified catalysts as high-efficiency electrocatalysts for electrocatalytic reduction of CO2, and effectively improves the CO2 reduction performance of the electrode in a neutral electrolyte. The ion liquid is introduced to optimize the electrode treatment, modify the surface of the electrocatalyst, enhance the mass transfer and activation of CO2, and the ion liquid cooperated with the ionomer shows excellent CO2 electro-reduction performance, improves the selectivity of multi-carbon products, suppresses the hydrogen evolution side reaction, and further reduces the cell voltage.

The present invention provides a novel method that makes it possible to efficiently separate Cu from battery waste containing Ni, Co, and Cu. A method for reproducing valuable metals according to the present disclosure includes: a step of roasting waste of a lithium ion secondary battery to obtain a roasted product; and a step of leaching Cu from the roasted product using an ammonia water. The waste contains Ni, Co, and Cu. The roasting is performed such that the roasted product contains Ni and Co in an oxide form and Cu in a metal form.

To provide a photonic sintering composition capable of forming, through light irradiation, a conductive film that is not only low in resistance but also uniform and excellent in adhesion to a substrate.SOLUTION: A photonic sintering composition comprises: a cuprous oxide particle containing at least one additive element selected from the group consisting of tin, vanadium, cerium, and silver, and having a cubic or rectangular parallelepiped shape with an edge length of 10 nm to 1,000 nm; and a solvent.SELECTED DRAWING: Figure 1

The present application relates to a kind of rich in defective oxygen and noble metal nanoparticle modified radial transition group-rare earth metal oxide porous nanosheet cluster, preparation method and application.The preparation method of the nanosheet cluster includes the following steps: first, transition group-rare earth metal precursor is prepared using hydrothermal method, then by calcination, obtain the radial transition group-rare earth metal oxide porous nanosheet cluster rich in defective oxygen, finally, using photoreduction method, prepare the radial transition group-rare earth metal oxide porous nanosheet cluster rich in defective oxygen and noble metal nanoparticle modification.The nanosheet cluster is constructed heterojunction by transition group metal oxide and rare earth metal oxide, presents radial structure, surface is rich in hole, noble metal nanoparticle and defective oxygen, can be applied to gas sensing, electrochemical sensing, photoelectric sensing and biosensing field.

The utility model relates to a kind of continuous extraction device for electronic copper oxide multiple purification, belong to copper oxide preparation technical field, including two extraction tanks, the top of two extraction tanks is fixedly installed with feed pipe, the upper of extraction tank is provided with fixed pipe, switching mechanism is arranged between the fixed pipe and feed pipe;The switching mechanism includes the movable pipe rotatably connected with the one end of the fixed pipe, the elbow pipe fixedly connected in the lower end of the movable pipe, the limiting plate fixedly connected in the upper end of the feed pipe and the touch switch set on the inner wall of the limiting plate.This continuous extraction device for electronic copper oxide multiple purification, so that one of the extraction tank in the process of standing, copper-containing leaching solution can be transported in another extraction tank, and extraction liquid is added to carry out stirring process, achieve the purpose of continuous extraction, suitable for large quantities of copper ion solution extraction work, improve extraction efficiency, with good practicability.

The present invention relates to a conductive film having excellent adhesion to a substrate. The conductive film is formed on a substrate, and contains a photoreduction sinter of a composition containing cuprous oxide particles and a binder resin. An unsintered layer containing cuprous oxide particles and a binder resin, which have not been photoreduced, is formed between the substrate and the conductive film. The carbon mole fraction in the molecules of the binder resin is 0.15% to 0.9%, and the oxygen mole fraction is 0.03% to 0.2%.

The invention relates to a method of providing an ore concentrate solution suitable for beneficiation processing, the method including the step of contacting an ore with one or more metal bases at elevated temperature. The one or more metal bases at elevated temperature may form a super-alkaline media that partially or fully dissolves the ore. Typically, the one or more metal bases are alkali metal bases, preferably chosen from lithium hydroxide, sodium hydroxide, potassium hydroxide, rubidium hydroxide or caesium hydroxide, or alkaline earth bases, preferably chosen from calcium hydroxide, barium hydroxide or strontium hydroxide. The one or more metal bases at elevated temperature may form a super-alkaline media that partially or fully dissolves the ore.

This invention discloses a method for producing copper oxide nanosheets from PCB acidic etching solutions, belonging to the field of PCB acidic etching solution treatment technology. This invention uses a reducing agent to react with acidic waste etching solution for precipitation. During the precipitation process, by controlling the pH, the content of hydroxide-type alkalis, and carbonate-type alkalis, copper ions can first be converted into cuprous chloride and basic copper carbonate intermediates before decomposing into copper oxide nanosheets. The process of this invention is simple, low-cost, and can produce high-purity copper oxide nanosheets from PCB acidic waste etching solution without high-temperature calcination. The provided method is applicable to copper plating, energy storage, solar cells, and chemical catalysts in the electronics industry.

This invention discloses a method for preparing and applying a lead-doped copper-based electrocatalyst. The method includes the following steps: mixing an aqueous solution containing trisodium citrate dihydrate with an aqueous solution containing copper sulfate, then adding an aqueous solution of sodium hydroxide to obtain an orange precursor; dissolving the dried orange precursor in a methanol solution of lead nitrate to anchor Pb nanoparticles onto a copper substrate (PbCu2O); and finally pyrolyzing the PbCu2O in a tube furnace to obtain the lead-doped copper-based electrocatalyst. The electrocatalyst for the reduction of carbon monoxide to multi-carbon products obtained by this invention exhibits a Faradaic efficiency of 96.5%, with a Faradaic efficiency of 66.5% for ethanol, and a cycling stability of 100 h.

This invention provides a method for regenerating chromic anhydride copper stripping solution used in the aerospace industry, solving the current technical problem of not being able to regenerate chromic anhydride copper stripping solution while simultaneously considering economic cost, environmental protection, and meeting process requirements. The method consists of two parts: copper ion separation and hexavalent chromium regeneration. First, after experimental screening, the effectiveness of oxalate as a copper ion precipitant in a chromic acid environment was verified. Although there is a drawback that some hexavalent chromium is reduced to trivalent chromium by the precipitant, a reasonable oxidation method is subsequently proposed to fully oxidize and regenerate the total trivalent chromium in the failed solution back to hexavalent chromium, thus overcoming the drawback of the first step of copper separation. Simultaneously, it also oxidizes and regenerates the original trivalent chromium in the solution.

This application relates to the field of tourmaline materials technology, disclosing a nano-tourmaline composite material, its preparation method, and its applications. The preparation method includes: uniformly mixing copper powder, copper oxide powder, and a solvent, followed by a first ball milling process to obtain a copper-containing mixed slurry; adding tourmaline powder to the copper-containing mixed slurry, followed by a second ball milling process to obtain a tourmaline-containing mixed slurry; and subjecting the tourmaline-containing mixed slurry to vacuum drying and grinding to obtain a nano-tourmaline / cuprous oxide composite material. The preparation process of this application is simple, requiring only ball milling and vacuum drying, without the need for ultrasonic dispersion or high-temperature and high-pressure treatment. The required raw materials are readily available, eliminating the need for various other chemical additives, thus avoiding environmental pollution and effectively reducing energy consumption. Simultaneously, it effectively enhances the negative ion emission performance of tourmaline, exhibiting significant health-promoting and antibacterial effects.

The application discloses a method for improving the performance of an ammonia synthesis system by using an ion liquid modified electrode material to promote electrocatalytic reduction of nitrate, and the ammonia synthesis system comprises the following steps: placing a three-electrode system in an H-type electrolytic cell to perform electrocatalytic reduction of nitrate for ammonia synthesis; the three-electrode system comprises a working electrode, a reference electrode and a counter electrode, wherein the ion liquid modified metal oxide is used as the working electrode, a silver / silver chloride electrode is used as the reference electrode, and a platinum wire is used as the counter electrode. The application uses the ion liquid modified electrode material to improve the performance of the ammonia synthesis system for the first time, and the method has the advantages of simple operation, high ammonia production rate and high selectivity, and provides an effective way for ammonia synthesis under mild conditions and nitrogen cycle balancing.

Provided is a photosintering composition including cuprous oxide particles containing at least one additive element selected from the group consisting of tin, manganese, vanadium, cerium and silver, and a solvent. It is preferable that the cuprous oxide particle contain 1 ppm to 30,000 ppm of tin as the additive element. It is also preferable that the photosintering composition contain 3% by mass to 80% by mass of the cuprous oxide particles and 20% by mass to 97% by mass of the solvent.

The present invention provides a novel method that makes it possible to efficiently separate Cu from battery waste containing Ni, Co, and Cu. A method for reproducing valuable metals according to the present disclosure includes: a step of roasting waste of a lithium ion secondary battery to obtain a roasted product; and a step of leaching Cu from the roasted product using an ammonia water. The waste contains Ni, Co, and Cu. The roasting is performed such that the roasted product contains Ni and Co in an oxide form and Cu in a metal form.

This invention relates to the field of micro / nanomaterials technology, and provides a submicron-sized cuprous oxide cube and its preparation method. The invention involves adding sodium hydroxide solution to a copper precursor compound solution, adjusting the pH of the system to ≥10, and then adding a morphology control agent solution and a reducing agent solution to carry out a redox reaction, yielding submicron-sized cuprous oxide cubes. The morphology control agent is a water-soluble nonionic cellulose derivative; the reducing agent is an ascorbic acid-based reducing agent. This invention successfully prepares pure-phase submicron-sized cuprous oxide cubes through the synergistic regulation of a concentrated alkaline environment and a morphology control agent. The product has a regular morphology, clear edges, and no other impurity phases. Furthermore, the preparation method provided by this invention is environmentally friendly, simple to operate, highly safe, and highly controllable, making it suitable for large-scale industrial production.

This invention discloses a porous CuO layered nanostructured electrode material and its preparation method, comprising the following steps: 1) Copper nitrate trihydrate and terephthalic acid are sequentially added to dimethylformamide (DMF) and stirred to dissolve, obtaining a sky-blue solution; 2) The sky-blue solution is transferred to a reaction vessel and subjected to hydrothermal reaction in an oven, cooled, washed with alcohol, and dried to finally obtain the electrode material. The beneficial effects of this invention are: the porous CuO layered nanostructured electrode material and its preparation method prepared by hydrothermal reaction exhibit high capacity, high power, and good cycle stability when used as a negative electrode material for lithium-ion batteries; the process is simple, the reaction conditions are mild, it is easy to scale up, and it meets the requirements of green chemistry.

The application belongs to the field of electro-reduction carbon dioxide catalysis, and particularly relates to a preparation method of a Gd-CuO electro-catalytic CO2 reduction catalyst based on dimension regulation of a carbon carrier. The application synthesizes a metal organic framework precursor at room temperature, obtains carbon materials with different dimensional structures through carbonization, and uses the carbon materials as carriers to synthesize copper-based catalysts loaded on the carriers through a hydrothermal method, so as to improve the performance of the carrier-loaded copper-based catalysts in electro-catalytic reduction of CO2 into C2H4. The carbon material with a two-dimensional sheet structure has a high specific surface area, and can make Gd-CuO flower-like microsphere structures broken, and then loaded on a two-dimensional carrier with nanoscale, so as to expose more edge and defect sites, better adsorb CO2, and the loaded copper-based catalyst has good catalytic performance.

This invention discloses a boron-doped Cu x The O2 composite bismuth vanadate photoelectrode belongs to the field of photoelectrochemical analysis technology. The boron-doped Cu of this invention... x The preparation method of the O2 composite bismuth vanadate photoelectrode includes the following steps: adding potassium iodide and bismuth nitrate to a nitric acid solution to obtain solution A; mixing solution A with a p-benzoquinone solution to obtain electrolyte A; using electrolyte A as the electrolyte, performing a first electrochemical deposition on the surface of the working electrode to obtain a working electrode with a deposited BiOI film; coating the surface of the working electrode with the deposited BiOI film with an acetylacetone vanadium oxide solution, performing a first annealing treatment, and then alkali washing to obtain the bismuth vanadate photoelectrode; adding copper nitrate to a potassium borate buffer solution to obtain electrolyte B; using electrolyte B as the electrolyte, performing a second electrochemical deposition on the surface of the bismuth vanadate photoelectrode, and then performing a second annealing treatment to complete the preparation.

An electromagnetic wave absorption composition and an electromagnetic wave absorber are disclosed. The disclosed electromagnetic wave absorbing composition may be composed of: a main component containing iron oxide (FexOy, x=1, 2, 3, and y=1, 3, 4) in a content of 38 mol% to 52 mol%, manganese oxide (MnxOy, x=1, 2, 3, and y=1, 3, 4, 7) in a content of 18 mol% to 40 mol%, and zinc oxide (ZNO) in a content of 14 mol% to 30 mol%; a sub-component containing copper oxide (CuxOy, x=1, 2, and y=1, 2, 3) in a content of 1 mol% to 4 mol% and cobalt oxide (CoxOy, x=1, 2, 3, and y=1, 3, 4) as a remainder; and an additive including a simple substance or a compound containing sodium (Na) in a content of 10 ppm to 200 ppm.

The utility model relates to copper-containing wastewater recovery technical field, and disclose a kind of low concentration copper-containing wastewater efficient recovery copper's device, including copper-containing waste liquid raw material storage tank, lye blending tank, reaction kettle, filter press, beating tank and reuse water tank, copper-containing waste liquid raw material storage tank and lye blending tank are connected with reaction kettle by pump machine, reaction kettle and beating tank are connected with filter press by pump machine, reuse water tank is connected with beating tank by pump machine, reuse water tank is connected with filter press by pipeline, the utility model effectively recycles low concentration copper-containing wastewater and prepares it as higher value copper oxide product, not only reduce the disposal cost of copper-containing wastewater, but also convert it into higher value product, and highly utilize the water filtered out in disposal process for reuse, reduce the disposal amount of back-end wastewater while recycling, and use in-plant self-produced steam, thereby bringing great economic benefits, with great practical value.

This invention discloses a walnut-shaped In2O3 / CuO material, its preparation method, and its applications, comprising the following steps: Step 1: solvothermal synthesis of a bimetallic coordination polymer precursor; Step 2: controllable pyrolysis of the precursor to convert it into a target oxide composite material; This invention addresses the difficulty of synergistic regulation of heterostructures and oxygen vacancies in existing methods by proposing a one-step solvothermal-programmed pyrolysis method to prepare a walnut-shaped In2O3 / CuO heterojunction composite material with a three-dimensional hierarchical porous structure and controllable oxygen vacancies, thereby achieving simultaneous optimization of material structure, composition, and defects to improve low-temperature Cl2 sensing performance.

The application provides a heterostructure CuCo2O4 / Cu2O bimetallic oxide electrode material, a preparation method and application thereof in electrocatalytic synthesis of ammonia and zinc-nitrate batteries, and the CuCo2O4 / Cu2O electrode material with a hetero-interface is prepared through a hydrothermal reaction combined with an inert atmosphere calcination process, with a cobalt source, a copper source and urea as raw materials, hydrothermal reaction in a mixed solvent of triethylene glycol and deionized water, and then washing, drying and calcination. The material is formed by nanoparticles to form a three-dimensional network structure, and there is electron transfer from copper to cobalt at the hetero-interface. The preparation method is simple, controllable and low in cost, the obtained electrode material has excellent catalytic activity and selectivity in the reaction of electrocatalytic reduction of nitrate to synthesize ammonia, and has good stability. When the material is used as a cathode to assemble a zinc-nitrate battery, power generation and ammonia synthesis can be realized simultaneously, the timer can be continuously powered for more than two weeks, and the material has wide application prospects in the fields of pollutant resource utilization and energy storage.