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

A preparation method and an application of a three-dimensional structured electric cathode based on cuprous oxide are provided by the present application. The preparation method includes the following steps: cutting copper foam, sequentially subjecting to ultrasonic treatment with acetone, hydrochloric acid, anhydrous ethanol and deionized water, followed by washing and vacuum drying to serve as an electrode substrate for later use; dissolving sodium acetate and copper acetate in deionized water, fully stirring for completely dissolution to obtain a solution, and adjusting a pH value of the solution to be acidic to serve as an electrodeposition precursor solution; and placing the copper foam in the electrodeposition precursor solution, electrodepositing at a predetermined temperature by using a three-electrode system and a potentiostatic method, followed by taking out, washing, and drying to obtain a catalytic electrode. The electric cathode is applied in fields of electrocatalytic reduction of nitrate and electrocatalytic ammonia production.

The invention provides high-dispersity superfine copper powder and a preparation method thereof, and belongs to the technical field of metal materials. The preparation method comprises the following steps: mixing a copper-containing solution, an alkali-containing solution and a reducing agent solution, and reacting to obtain a cuprous oxide precursor; and mixing the cuprous oxide precursor solution, the dispersing agent solution and the reducing agent solution, and reacting to obtain the superfine copper powder. According to the method, a traditional one-step liquid phase synthesis method for the superfine copper powder is abandoned, a two-step method is creatively adopted for preparing the superfine copper powder, and the contradiction between the size of copper particles and the technological capacity is solved. According to the preparation method, the copper particles with smaller sizes can be prepared on the premise that high unit volume productivity is kept, and the prepared copper particles are smooth in surface and uniform in size.

The invention relates to composition and preparation of a thick-film copper conductor sintered at different temperatures and different atmospheres, and belongs to the field of chemical preparation. Comprising the following steps: mixing 65-85% of copper powder, 3.0%-15.0% of glass, 15.0%-35.0% of an organic adhesive and 0.1-1.5% of an additive which is one or more of titanium trioxide or stannous oxide, cuprous oxide and copper oxide, rolling into slurry, and sintering at 850-950 DEG C under the protection of nitrogen or ammonia gas to obtain a copper conductor. The medium-temperature copper paste is prepared by the following steps: mixing 60.0-85.0% of copper powder, 3.0-13.0% of glass, 8.0-25.0% of an organic adhesive and 0.2-1.6% of an additive which is one or more of titanium sesquioxide or stannous oxide, cuprous oxide and copper oxide, rolling into paste, and sintering at 450-650 DEG C under the protection of nitrogen or ammonia gas to obtain a copper conductor. The low-temperature copper paste is prepared by mixing 60.0-85.0% of copper powder, 3.0-13.0% of glass, 8.0-25.0% of an organic binder and 0.1-2.0% of an additive which can be one or more of elemental elements of magnesium, zinc, boron and phosphorus or one or more of nickel phosphide, nickel boride, copper phosphide and copper oxide, rolling the mixture into paste, and sintering the paste in air at 250-350 DEG C to obtain a copper conductor.

The invention discloses a method for synthesizing a Mn0. 43Cd0. 57S / Cu2MoS4 photocatalyst by adopting a solvothermal method, and belongs to the technical field of catalysts. The preparation method comprises the following steps: preparing copper molybdenum sulfide by using cuprous oxide as a template, synthesizing copper molybdenum sulfide with high purity and good crystallinity by combining a solvothermal method, preparing manganese cadmium sulfide by using manganese acetate, cadmium acetate, sodium hydroxide and thioacetamide as raw materials, adding copper molybdenum sulfide before a hydrothermal reaction, successfully modifying the manganese cadmium sulfide by constructing a heterojunction, and preparing the copper molybdenum sulfide modified manganese cadmium sulfide. The Mn0. 43Cd0. 57S / Cu2MoS4 photocatalyst is synthesized, and the photocatalytic hydrogen production rate of the cadmium manganese sulfide is improved. Moreover, the hydrogen production rate of the Mn0. 43Cd0. 57S / Cu2MoS4 photocatalyst prepared by the invention can reach 8233 mu mol / (g.h), which is 2.08 times of the hydrogen production rate of pure cadmium manganese sulfide, and 1.24 times of the hydrogen production rate of cadmium manganese sulfide loaded with 1% platinum.

The invention relates to the field of preparation of quantum dot cuprous oxide, in particular to a simple preparation method and application of high-dispersion cuprous oxide quantum dots, and the method comprises the following steps: mechanically grinding commercial P25 serving as a carrier catalyst and copper chloride in an agate mortar, uniformly mixing, adding hydrazine hydrate, continuously grinding for 30 minutes, washing the obtained solid product with deionized water, and drying to obtain the high-dispersion cuprous oxide quantum dots. And drying at room temperature to obtain the cuprous oxide quantum dots uniformly dispersed on the TiO2 carrier. The preparation method of the metal quantum dots is simple and convenient, the raw materials are simple and easy to obtain, repeatability is good, and the metal quantum dots are highly dispersed. The material prepared through the method can remarkably improve the photocatalytic hydrogen evolution and nitrogen reduction efficiency of a carrier catalyst. The method has a wide application value in the creation of the quantum dot catalyst in the field of sustainable energy sources such as photocatalysis.

The invention discloses a preparation method and application of octahedral cuprous oxide containing defects, and belongs to the technical field of material preparation. In order to solve the problems that in existing cuprous oxide preparation, a defect structure is difficult to accurately regulate and control, and the crystal form uniformity is insufficient, the method comprises the steps that a copper source solution, a glucose solution, a sodium citrate solution and an ammonium fluoride solution with specific concentrations are mixed according to the volume ratio, the pH is adjusted to 10.5-11, then a hydrothermal reaction is conducted, and a target product is obtained through centrifugation, filtration, washing and drying. The method comprises the following specific steps: mixing solutions, reacting in a high-pressure reaction kettle at 140-165 DEG C for 4-6 hours, and realizing octahedral crystal form construction and defect regulation and control by controlling the raw material ratio and reaction conditions. The preparation method is simple in process and high in controllability, and the prepared octahedral cuprous oxide containing defects can serve as a catalyst to be applied to the fields of catalytic decomposition of ammonium perchlorate and the like and has good industrial application prospects.

The invention discloses a cuprous oxide / carbon nitride composite material and a preparation method and application, and belongs to the field of materials.The preparation method comprises the steps that carbon nitride quantum dots are added into a copper salt solution, and walnut-like cuprous oxide / carbon nitride composite particles with cuprous oxide as a main body and carbon nitride monodispersed on the surface of cuprous oxide are obtained through a liquid phase reduction method. The sensing electrode constructed by taking the cuprous oxide / carbon nitride composite material synthesized by the invention as a catalytic medium is high in glucose detection sensitivity and low in detection limit, has excellent performance in the aspect of glucose detection, and also has good photoelectric synergy capability, so that the sensing electrode has better glucose sensing performance. Therefore, the method has huge application potential in the field requiring rapid quantification of glucose.

The invention relates to the technical field of photocatalysis, and provides a preparation method of a copper-cuprous oxide-copper bismuthate ternary complex, which comprises the following steps: adding sodium bismuthate dihydrate, copper sulfate and sodium sulfite into a hydrothermal reaction kettle containing distilled water to obtain a solid-liquid mixture; and the solid-liquid mixture generates the copper-cuprous oxide-copper bismuthate ternary compound under a hydrothermal condition through a synergistic effect of a heterogeneous interface in-situ oxidation-reduction reaction of sodium bismuthate and a sodium sulfite solution and a homogeneous oxidation-reduction reaction of a copper sulfate solution and the sodium sulfite solution. The preparation method has the advantages that the elemental copper-cuprous oxide-copper bismuthate ternary compound is prepared by a one-pot method through cooperation of the out-phase interface in-situ oxidation-reduction reaction and the homogeneous oxidation-reduction reaction, and the preparation method is simple in preparation step, convenient to operate and easy to quantitatively control.

The present invention discloses a preparation method and application of a cuprous oxide-boron nitride flower S-type heterojunction composite photocatalyst. The preparation process is as follows: boron nitride flower and copper nitrate are dispersed in water, copper nitrate is chemically reduced by hydrazine hydrate on the surface of the boron nitride flower, cuprous oxide is grown in situ, and then freeze-dried to obtain a cuprous oxide-boron nitride flower S-type heterojunction composite photocatalyst. The present invention successfully constructs a boron nitride flower and cuprous oxide heterojunction, utilizes a catalytic interface formed by the composite of the two catalysts, regulates a multivalent Cu(I) / Cu(II) site, promotes the directional transmission and accumulation of photogenerated carriers to the Cu(I) / Cu(II) site, and finally realizes the ability of photocatalytic CO2 ethanolization. The present invention is easy to operate and repetitively stable.

The invention discloses a recyclable porous copper / cuprous oxide filamentous catalytic material and also discloses a preparation method of the catalytic material, and the preparation method comprises the following steps: taking a copper wire and pre-treating the copper wire to remove surface oxides; performing zinc electrodeposition treatment on the copper wire to obtain a galvanized copper wire; carrying out solution treatment on the galvanized copper wire to obtain a porous copper precursor; then, the porous copper precursor is subjected to corrosion treatment, zinc in a plating layer is removed, and a porous copper catalyst carrier is obtained; and putting the porous copper catalyst carrier into a tubular furnace for high-temperature oxidation to obtain the Cu / Cu2O filamentous catalytic material. The catalytic material provided by the invention has the characteristics of recoverability and good catalytic performance. According to the method, cuprous oxide is generated by adopting a one-step high-temperature thermal oxidation method, and regulation and control parameters are few and easy to control in the process.

The invention discloses a preparation method of copper-based composite powder with high infrared laser absorptivity and a reaction device of the copper-based composite powder, and belongs to the technical field of metal additive manufacturing. The preparation method of the copper-based composite powder comprises the following steps that copper powder is subjected to acid pickling pretreatment, Cu2O-coated Cu powder is prepared through air suspension dynamic etching, the Cu2O-coated Cu powder is purified, and the prepared composite powder is of a core-shell structure and comprises a copper core and a cuprous oxide modified shell wrapping the surface of the copper core; by means of the structure, the absorptivity of the copper powder to near-infrared laser of 1064 nm and the like can be remarkably improved to 30% or above, and therefore the problems that pure copper is poor in melting and multiple in forming defect due to high reflectivity in laser additive manufacturing are effectively solved. The composite powder can be directly used for existing selective laser melting or directional energy deposition equipment, has great significance in achieving high-density copper part forming under medium power, and is convenient to prepare, low in cost and high in practicability.

The invention belongs to the technical field of electro-catalytic materials and carbon dioxide emission reduction and resource utilization, and particularly relates to an amino acid modified copper-based catalyst and a preparation method and application thereof. According to the catalyst, the surface of cuprous oxide with an orthorhombic-section semi-cube shape is modified through L-cysteine, and a composite structure with a special interface microenvironment is formed. Sulfydryl in L-cysteine and copper species on the surface of cuprous oxide can form a strong coordination effect, water decomposition and * CO protonation are promoted, the surface structure is stabilized, asymmetric coupling is facilitated, meanwhile, amino can provide an electron-rich environment, capture of carbon dioxide is enhanced, and the selectivity and stability of ethylene prepared through electro-catalysis carbon dioxide reduction are cooperatively regulated and controlled.

The invention discloses a preparation method of sphere-like superfine copper powder. The preparation method comprises the following construction steps that raw materials are subjected to extraction, replacement, primary centrifugal separation, primary reduction, secondary centrifugal separation, secondary reduction, tertiary centrifugal separation, antioxidant coating and drying operation, and then the sphere-like superfine copper powder is finally obtained. The method solves the problems of large powder particle size and easy introduction of impurities in various existing superfine copper powder processing technologies, or the problems of expensive equipment, high cost, low yield and easy oxidation of prepared copper powder in preparation. According to the method, the traditional copper powder preparation process is improved, the reaction system is simplified, the reaction is more stable and controllable, the cuprous oxide and the copper are prepared by sequentially reducing the bivalent copper salt, the reaction protective gas is added in the secondary reduction, and the antioxidant is added, so that the prepared superfine copper powder is prevented from being oxidized in the air.

The invention belongs to the technical field of electro-catalysis, and particularly relates to a modification method of a copper-based catalyst for electro-catalysis carbon dioxide reduction and a product and application of the copper-based catalyst. The modification method comprises the following steps: (1) respectively preparing a first solution containing copper ions and halogen ions and a second solution containing hydroxyl ions; (2) putting the copper-based material into the first solution, reacting, generating a cuprous halide phase on the surface of the copper-based material, and taking out the copper-based material; and (3) putting the copper-based material taken out in the step (2) into the second solution, and reacting to generate cuprous oxide in situ. According to the method, a copper-based material is subjected to a neutralization reaction to generate cuprous chloride, and then a reconstruction reaction is performed to generate cuprous oxide, so that in-situ preparation of the high-adaptability nano cuprous oxide particles is successfully realized, and the cuprous oxide can be used for efficiently reducing carbon dioxide or carbon monoxide into a multi-carbon product; and high selectivity, good structural stability, long-time operation stability and large-current operation capability are realized.

The invention discloses a copper oxide / cuprous oxide heterogeneous nano-material with chiral morphology and a preparation method thereof, and the method comprises the following steps: 1, mixing a copper salt aqueous solution and a surfactant aqueous solution to obtain a mixed solution A, taking a chiral ligand aqueous solution to add into the mixed solution A under a stirring state, and stirring at room temperature to obtain a copper oxide / cuprous oxide heterogeneous nano-material; a copper ion reaction precursor solution is obtained; and 2, adding a sodium hydroxide aqueous solution into the copper ion reaction precursor solution, stirring at room temperature to obtain a mixed solution B, transferring the mixed solution B into a hydrothermal reaction kettle, putting the hydrothermal reaction kettle into a drying oven, reacting at 120-160 DEG C for 2-6 hours, after the reaction is finished, centrifugally separating out a precipitate, and sequentially washing and drying in vacuum to obtain the copper ion catalyst. The copper oxide / cuprous oxide heterogeneous nano material with chiral morphology is obtained. The preparation method is simple, low in cost and easy to implement, and the obtained chiral copper oxide / cuprous oxide heterogeneous nano material has good structural stability and crystallinity.

The invention relates to the technical field of cuprous oxide particle testing, and discloses a method for characterizing cuprous oxide particles in a fine copper wire, which comprises the following steps: S1, fixing the fine copper wire on a copper sheet by using conductive silver paste, putting the copper sheet into a silica gel square mold, filling a metallographic phase cold inlay, and standing for 30 minutes to obtain a cured sample; s2, putting the cured sample obtained in the step S1 into a cross section cutting sample table of a three-ion-beam cutting instrument, selecting a cross section mode, setting ion gun voltage and ion beam cutting time, and starting a cutting program; and S3, transferring the sample obtained in the step S2 into a scanning electron microscope, selecting an electron channel contrast imaging mode, and setting acceleration voltage, current, working distance and magnification times to obtain a high-resolution scanning electron microscope image of the cross section of the fine copper wire. And key information such as the size, the morphology and the distribution condition of cuprous oxide particles and the interface bonding condition of the cuprous oxide particles and a copper matrix is obtained from the cuprous oxide particles. Therefore, a basis is provided for formulating a reasonable fine copper wire drawing process and a bus continuous casting and rolling process.

The invention provides a composite antifouling system coating as well as a use method and application thereof. The coating sequentially comprises a bottom layer, a copper-containing middle layer and a surface layer in the direction from near to far away from a base material, wherein the copper-containing middle layer comprises 20-30 parts of self-polishing acrylic silicon resin, 5-10 parts of lime rosin, 8-12 parts of zinc oxide, 30-50 parts of cuprous oxide, 2-3 parts of a compound antifouling agent, 0.5-1 part of a thixotropic agent and a first diluent. The surface layer is prepared from 30 to 35 parts of caprolactone and lactic acid grafted linear polyester, 5 to 10 parts of highly hydrolyzed N-(hydroxymethyl) acrylamide (NMA) modified acrylic resin, 15 to 20 parts of copper-free organic antifouling agent, 5 to 12 parts of polytetrafluoroethylene micro powder, 2 to 3 parts of dispersing agent and second diluent. The high-hydrolysis copper-free surface layer forms an isolation barrier, so that the copper-containing middle layer is prevented from being in direct contact with air, and the problem that the antifouling efficiency is reduced due to the fact that water is not discharged for a long time after coating is solved; the stable hydrolysis rate of the surface layer resin can ensure the continuous release of the organic antifouling agent, and the copper-containing intermediate layer can provide deep antifouling guarantee and synergistically realize long-acting antifouling.

The invention belongs to the technical field of environmental functional materials, and discloses a preparation method and application of a self-supporting cobalt-doped cuprous oxide double-site cathode electrode. Foamy copper is used for preparing a substrate, and a cobalt-doped copper hydroxide nanorod composite material is obtained through electrochemical deposition; and carrying out annealing treatment at a certain temperature and in a nitrogen atmosphere to obtain the Co-Cu2O / CF electrode. According to the preparation method of the three-dimensional self-supporting Co-Cu2O / CF cathode electrode, adsorption of nitrate is optimized and decomposition of water is promoted through the synergistic effect between two sites of copper and cobalt, so that selective conversion from nitrate to ammonia is improved. The invention provides the application of the cobalt-doped cuprous oxide self-supporting cathode electrode in the aspect of electrocatalytic nitrate reduction synthesis of ammonia, and the cobalt-doped cuprous oxide self-supporting cathode electrode has excellent Faraday efficiency and ammonia selectivity and good stability. Meanwhile, the preparation method of the catalyst is simple and easy to implement, high electro-catalytic performance is achieved, and the catalyst has a certain potential application prospect.

The invention provides a preparation method of a cuprous oxide / cobaltosic oxide heterojunction composite material. The preparation method comprises the following steps: S1) growing cobaltous hydroxide on the surface of a carrier in situ; s2) calcining the cobaltous hydroxide, so as to obtain cobaltosic oxide; and S3) carrying out electroreduction deposition on the cobaltosic oxide in a mixed solution containing a copper source and an electrolyte to obtain the cuprous oxide / cobaltosic oxide heterojunction composite material. In the reduction reaction of electro-catalysis of 5-hydroxymethylfurfural, the prepared composite material serves as a catalyst, cuprous oxide serves as a main catalytic site for catalyzing reduction of HMF into DHMF, the capacity of generating active hydrogen through water dissociation is promoted due to existence of a cobaltosic oxide substrate, and therefore the selectivity of the product DHMF is improved; meanwhile, the composite material prepared by the invention shows excellent electrochemical catalysis performance and good cycling stability, and has a great application prospect in an HMF electroreduction reaction.

The invention relates to the technical field of electro-catalysis electrode materials, in particular to a metal-loaded three-dimensional copper-based catalyst and a preparation method and application thereof. The preparation method comprises the following steps: by taking foamy copper as a substrate, firstly soaking the foamy copper in a mixed solution containing ammonium persulfate and sodium hydroxide, then taking out the foamy copper and controlling drying conditions, while obtaining Cu (OH) 2 nanowires on the foamy copper, realizing dehydration reduction of part of Cu (OH) 2 to obtain cuprous oxide active sites with reducibility; cuprous oxide reacts with metal ions, and the metal-loaded three-dimensional copper-based catalyst is obtained. According to the invention, the compounding of multiple metal elements and Cu (OH) 2 is realized at normal temperature and normal pressure, the technical defects of an electrochemical deposition method and a high-temperature sintering method in the prior art are overcome, and the obtained metal-loaded three-dimensional copper-based catalyst has the characteristics of no aggregation of metal particles, high-efficiency mass transfer and load transfer, and good application prospect. The application efficiency of electro-catalysis of the metal-loaded three-dimensional copper-based catalyst can be effectively improved.

The invention discloses a method for rapidly, accurately and simply detecting oxygen content in a copper material and application. The invention belongs to the field of material detection and analysis. The invention aims to solve the technical problems of high cost, low efficiency and low accuracy of the existing method for measuring the oxygen content in copper. The method comprises the following steps: performing electrolytic polishing on the basis of mechanical polishing; a metallographic microscope is used for observing the sample under different multiplying powers in a bright field mode, when a sky-blue fine-grained or round-grained phase structure appears on the surface, the polarization mode is switched, and if a ruby-colored fine-grained or round-grained phase structure appears, the oxygen element is contained; the observed range edge is marked under the condition that the metallographic microscope is magnified to 200 times, the metallographic microscope is magnified to 500 times within the defined area range for photographing and splicing, the spliced area is reduced to a sampling image with the area size of 200 times, then the area proportion of the cuprous oxide phase in the sampling image is counted, and the area proportion of the cuprous oxide phase in the sampling image is calculated according to the area proportion of the cuprous oxide phase. Finally, the oxygen content is calculated through a formula.

The invention provides a preparation method of a nano copper oxide catalyst, which comprises the following steps: mixing nano copper oxide particles and soluble cerium salt in water, and then carrying out hydrothermal reaction in vacuum or protective atmosphere, so that copper oxide on the surfaces of the nano copper oxide particles is partially reduced into cuprous oxide, and ceric oxide is covered at the same time; ceric ions and cerium ions enter crystal lattices of copper oxide; and then hydrazine is added for further reaction, so that the ceric ions entering the copper oxide crystal lattice are partially reduced into cerium ions, and the multiple crystal lattice distortion of the copper oxide crystal lattice is realized to obtain the nano copper oxide catalyst rich in oxygen vacancies. The invention also provides the nano copper oxide catalyst prepared by the method and the preparation method thereof.

A method for preparing a multi-carbon product by electrically reducing carbon dioxide relates to the technical field of energy catalysis and is carried out in a membrane electrode electrolytic tank, and self-assembled spherical copper nanoparticles with rough surfaces are used as a cathode catalyst. By introducing a mixed gas of carbon dioxide and water into the cathode side, the carbon dioxide is electrically reduced to prepare a multi-carbon product. By adjusting the moisture pressure, the catalytic performance is improved, and the problems of low selectivity and low stability under high current density are solved. Cuprous oxide and metal copper are adopted under the reaction potential, and high reaction activity and ethylene and ethanol selectivity are shown. Under the conditions that the water pressure is 2.7 kPa and the current density is 1.0 A # imgabs0 #, the Faraday efficiency of a multi-carbon product reaches 80%, the Faraday efficiency of ethylene reaches 58% at most, and an excellent carbon dioxide reduction effect is shown. The method is simple in preparation and easy to implement, and the catalyst is excellent in performance.

To provide cuprous oxide powder with a relatively high packed bulk density and a production method for the cuprous oxide powder.SOLUTION: The cuprous oxide powder contains sulfur (S) with a content of less than 140 mass ppm and chlorine (Cl) with a content of less than 1000 mass ppm.SELECTED DRAWING: None

The invention discloses a low-toxicity cuprous oxide semiconductor coating material and a preparation method thereof, and in the composition of raw materials for preparing the low-toxicity cuprous oxide semiconductor coating material, copper oxide powder CuO and copper powder Cu are used as main components; at least two metal oxides are used as additives and at least comprise Cr2O3 and Fe2O3; kaolin, feldspar powder and quartz sand are used as mineralizing agents, and deionized water is used as a solvent; the raw materials comprise the following components in percentage by mass: 35-45% of copper oxide powder CuO; 8 to 12 percent of copper powder Cu; 7 to 9 percent of ferric oxide (Fe2O3); 7 to 9 percent of chromium sesquioxide (Cr2O3); 5% to 8% of feldspar powder 3Al2O3. 2SiO2-Al2O3; 18 to 22 percent of quartz sand SiO2; 5 to 7 percent of kaolin; the sum of the mass proportions of the components is 100%. According to the technical scheme, the problem that the existing semiconductor coating material taking Cu2O as a main material does not have the capability of adopting spraying processing due to the fact that Cu2O has high toxicity is solved.

The invention discloses a layered nano-porous copper loaded cuprous oxide / copper oxide nanowire composite material as well as a preparation method and application thereof. The material is a thin strip and comprises an amorphous substrate thin strip, multiple layers of nano-porous copper covering an amorphous substrate and a cuprous oxide / copper oxide two-component heterojunction nanowire loaded on the surface of the nano-porous copper. The preparation method comprises the following steps: firstly, freely dealloying an amorphous ribbon, and adding PVP (Polyvinyl Pyrrolidone) into dealloying corrosive liquid to generate layered nano-porous copper; then, copper hydroxide nanowires grow on the surface of each layer of nano-porous copper in situ through the anodic oxidation technology; and finally, converting the copper hydroxide into cuprous oxide / copper oxide nanowires with different component proportions by regulating and controlling the temperature by adopting a heat treatment process. The prepared composite material has a larger specific surface area and more active sites, and has unique structure and performance advantages in the field of photocatalytic degradation of organic dyes.

The invention discloses a composite cathode material integrating electrocatalysis and ozone oxidation functions, a preparation method and application. The composite cathode material is composed of oxidized carbon nanotubes, cuprous oxide and copper oxide. The copper loading capacity of the composite cathode material is 1-10wt.%; the diameter of the oxidized carbon nanotube is 5 to 10 nm; the mass ratio of the oxidized carbon nanotubes to the cuprous oxide to the copper oxide is (298-27): (3.0-2.5): (0-1). A composite cathode material integrating electrocatalysis and ozone oxidation functions is elaborately designed and prepared and is applied to an electrocatalytic ozone coupling system, and continuous and efficient attack on antibiotic molecules and degradation intermediates thereof is realized by utilizing multiple synergistic effects among all components of the material and in the electrocatalytic ozone process, so that the electrochemical performance of the composite cathode material is improved. Therefore, the technical bottleneck of low TOC removal rate in the traditional advanced oxidation process is broken through, and a new technical approach is provided for thoroughly eliminating the antibiotic risk in the water environment.

The invention relates to the field of cuprous oxide production control, and is used to solve the problem that the condition control is unstable in the cuprous oxide production process, resulting in a low yield of cuprous oxide. The invention specifically relates to a cuprous oxide continuous production device based on parameter allocation and a control system thereof. In the invention, in the cuprous oxide production process, the temperature and the pH are monitored to ensure that the temperature and the pH are within a set range, and at the same time, the single input upper limit of the pH adjustment component is obtained by calculating the current temperature, and when the pH is regulated, the input amount of the adjustment component is limited by the single input upper limit, and when the adjustment amount exceeds the standard, the pH adjustment component is input in batches to avoid temperature changes in the solution caused by the temperature change, and in the process of generating cuprous oxide, the actual precipitation amount is obtained by proportional formula analysis, and when the amount of cuprous oxide precipitation in the solution reaches the standard, the solution and the precipitation are released in time, so as to improve the yield of cuprous oxide.

The invention discloses a method for producing cuprous oxide by utilizing low-grade purified copper slag in a zinc hydrometallurgy process, and belongs to the technical field of purified copper slag. The invention relates to a method for producing cuprous oxide by utilizing low-grade purified copper slag in a zinc hydrometallurgy process. The method mainly comprises the following steps: acid leaching and impurity removal; the pre-leached filter residues are mixed with dilute sulphuric acid, air is introduced to serve as an oxidizing agent for oxidation leaching, after leaching, the pH is adjusted to 4.0-5.0 through CaCO3, and copper-containing leaching liquid is obtained through filtering; adding dextrose monohydrate into the copper-containing leachate, and adjusting the pH value by using NaOH; according to the method, through the closed-loop process of acid presoaking impurity removal, air oxidation leaching, glucose reduction and cuprous oxide Cl <-> removal, conversion from harmless treatment to resource high-value utilization of the low-grade copper slag is achieved, air is used for replacing KMnO4, MnO2 and other chemical oxidants, the cost is reduced, no harmful by-product exists, the green metallurgy requirement is met, and the method is suitable for industrial production. The prepared cuprous oxide is directly used for removing Cl <-> from a supernatant in electrolytic zinc, and the double contradiction of copper slag dilution and high cost of a Cl <-> removing agent in the industry is solved.

The invention discloses a copper cyanoaurate hexagonal sheet loaded cuprous oxide material as well as a preparation method and application thereof. The copper cyanoaurate hexagonal sheet loaded cuprous oxide material comprises a copper cyanoaurate hexagonal sheet and cuprous oxide loaded on the copper cyanoaurate hexagonal sheet. According to the preparation method, copper ammonium chloride and potassium cyanoaurate are taken as raw materials, a copper cyanoaurate hexagonal sheet is prepared by a hydrothermal method, and then cuprous oxide is loaded on the copper cyanoaurate hexagonal sheet, so that the copper cyanoaurate hexagonal sheet loaded cuprous oxide material is obtained. The invention provides application of the copper cyanoaurate hexagonal sheet loaded cuprous oxide material as a catalyst for electrocatalytic reduction of carbon dioxide, and provides a gas diffusion electrode, and the catalyst in the gas diffusion electrode is the copper cyanoaurate hexagonal sheet loaded cuprous oxide material. The preparation process is simple and environment-friendly; the prepared material has higher ethylene selectivity and stability in the reaction of electrocatalytic reduction of carbon dioxide.