217 results about "Copper hydroxide" patented technology

The invention provides a preparation method of a Fenton-like catalytic material for selectively removing phenolic pollutants, the Fenton-like catalytic material and application of the Fenton-like catalytic material, and belongs to the technical field of water treatment.The preparation method comprises the steps that light MgO is added into a copper nitrate solution to be stirred for a reaction, obtained precipitates are filtered, washed and dried, and copper hydroxide nanoparticles are obtained; dispersing the copper hydroxide nanoparticles in a cerium nitrate solution for hydrothermal reaction, and filtering, washing and drying the obtained precipitate to obtain a Ce (at) Cu (OH) 2-IE intermediate; and calcining the Ce (at) Cu (OH) 2-IE intermediate to obtain the Fenton-like catalytic material CC-IE. The prepared catalytic material can efficiently activate PMS to generate singlet oxygen, utilizes an oxidative polymerization mechanism to stably remove organic phenol pollutants in water, and has the advantages of high electron utilization rate, selective oxidation, non-free radical path degradation and high TOC removal rate.

The invention discloses a difunctional electrocatalyst for carbon dioxide reduction and PET plastic oxidation and a preparation method and application of the difunctional electrocatalyst, and belongs to the field of application of electrocatalytic materials. The preparation method comprises the following steps: precipitating copper chloride and sodium hydroxide to obtain a precursor of copper hydroxide, and freeze-drying, washing and drying the precursor. The problem that the voltage required by the anode reaction is large when carbon dioxide is electrolyzed is solved. And meanwhile, the material has the advantages of excellent negative and positive electrode bifunctional activity and simultaneous generation of chemicals with high added value at the two electrodes, and has certain commercial application value. Meanwhile, the preparation method is simple, and technical feasibility is provided for large-scale preparation of fine chemicals through carbon dioxide reduction.

The invention discloses a clean production process for cyclic utilization of nickel-containing waste, which comprises the following steps: placing nitrogen trifluoride electrolysis nickel-containing waste residue in an electrothermal furnace, sublimating or decomposing ammonium bifluoride in the nickel-containing waste residue, condensing, liquefying and crystallizing through a condensing system to re-synthesize ammonium bifluoride for sale or reuse; the main components of the material a heated and volatilized by the electrothermal furnace are nickel fluoride, ferric fluoride and copper fluoride; adding the material a into an alkaline material solution for conversion leaching to obtain nickel hydroxide, ferric hydroxide and copper hydroxide, and converting a sodium hydroxide or potassium hydroxide solution into a sodium fluoride or potassium fluoride solution; adding an acid-carrying anolyte of a nickel electrolysis system into the obtained nickel hydroxide, ferric hydroxide and copper hydroxide slag, dissolving nickel hydroxide, ferric hydroxide and copper hydroxide into an electrolyte by using acid in the anolyte, removing metal impurities, and filtering to obtain a pure nickel electrolysis pre-solution; and electrolytic nickel with the nickel content larger than 99.96% of Ni is produced through insoluble anode electrolysis.

The invention relates to the technical field of electro-catalysis, in particular to a Cu-In2O3 nanoparticle catalyst as well as a preparation method and application thereof. The method comprises the following steps: dissolving a soluble copper salt and a soluble indium salt in water together, mixing with an alkali solution, carrying out a precipitation reaction, and combining copper ions and indium ions with OH <-> ions in alkali in the precipitation reaction process to generate copper hydroxide and indium hydroxide so as to obtain a precipitate; freeze-drying the precipitate to obtain a precursor; and calcining the precursor in a mixed atmosphere of hydrogen and inert gas to obtain the Cu-In2O3 nanoparticle catalyst. The Cu-In2O3 nanoparticle catalyst disclosed by the invention not only has excellent catalytic activity and high selectivity to formic acid, but also has good stability and reusability. When the Cu-In2O3 nano-particle catalyst is applied to the electrocatalytic carbon dioxide reduction reaction, the energy consumption can be effectively reduced, and the production efficiency and the product quality of formic acid can be improved.

The invention belongs to the technical field of metal powder preparation, and particularly relates to a preparation method of copper powder. According to the method, the pH value of a reduction reaction system is precisely regulated and controlled to be within the range of 5.38-9.38, the dispersing agent is reasonably added in stages before and after pH regulation, and the copper powder with the small average particle size and the low variable coefficient is successfully prepared. From the perspective of the process principle, the accurate regulation and control of the pH value can influence the crystal growth kinetics of copper hydroxide by adjusting the proton concentration, and directionally induce the copper hydroxide to form a target crystal form with a regular structure and uniform morphology, thereby laying a foundation for uniform nucleation and growth of copper atoms in the subsequent reduction reaction; by adding the dispersing agent in stages, the steric hindrance effect and the interface adsorption effect of the dispersing agent can be synergistically exerted, copper hydroxide particles are effectively inhibited from being agglomerated in the early stage, copper particles are prevented from being agglomerated due to too high local concentration in the reduction process in the later stage, and the consistency of the particle size is further guaranteed.

The invention discloses an aggregation-induced emission-metal-organic framework probe which is prepared by taking copper hydroxide as a metal center and 1, 1, 2, 2-tetra (4-carboxybenzene) ethylene as an organic ligand through a one-pot solvothermal method. The invention discloses a method for detecting diazinon by using a fluorescence sensing system constructed based on the aggregation-induced emission-metal-organic framework probe. The aggregation-induced emission-metal-organic framework probe is extremely low in background fluorescence, background signal interference during diazinon detection can be reduced, and sensitivity is improved. Meanwhile, enzyme mediation is introduced to serve as a controllable recognition element, specific and sensitive detection of diazinon is achieved, and the detection limit is 0.14 ng.mL <-1 >. The aggregation-induced emission-metal-organic framework probe disclosed by the invention shows the advantages of high sensitivity, high selectivity, quick response, stability, simplicity and convenience in operation and the like in diazinon detection, and has a wide application prospect.

The present invention belongs to the technical field of petrochemical catalysis, and relates to a preparation method for improving the stability of a Cu-Beta zeolite catalyst for preparing caprolactam from caprolactone, and the use thereof. In the present invention, a cavity-modified dealuminated Beta zeolite is used as a carrier, and copper is loaded in pore channels of the zeolite carrier by means of an improved ammonia distillation method. The cavity modification refers to subjecting the dealuminated Beta zeolite carrier to a desiliconization technique controlled by the use of a weak organic base so as to enlarge silanol nests generated by dealumination of the dealuminated Beta zeolite carrier, thereby better accommodating and stabilizing the nano and sub-nano copper particles. The core of the improved ammonia distillation method involves impregnating a zeolite carrier with an equal volume of a copper-ammonia complex solution, such that the copper-ammonia complex mainly undergoes, during ammonia distillation, a reaction of depositing copper hydroxide in zeolite pore channels, thereby improving the sintering resistance. The Cu-Beta catalyst prepared using the method provided by the present invention exhibits high activity, selectivity and stability when applied to the reaction of caprolactam prepared from caprolactone via gas-solid phase hydroamination.

An electrocatalyst including: a first nanostructure including copper hydroxide; and a second nanostructure including a metal of Groups 2, 4, or 11 to 14 of the Periodic Table of Elements, other than copper, a metal oxide of the metal, a metal hydroxide of the metal, or a combination thereof, wherein the electrocatalyst is effective to catalyze conversion of carbon dioxide into a multicarbon compound.

The application discloses a preparation method of mesoporous copper oxide and application thereof. The preparation method comprises the following steps: S1, preparing a hydroxyl copper nitrate microplate by taking calcium carbonate paper as a substrate and copper nitrate as a solvent; S2, synthesizing an ordered copper hydroxide nanowire assembly through an alkali solution reaction; and S3, performing annealing treatment in a muffle furnace to obtain the mesoporous copper oxide microplate. Under the conditions of no hard template, no soft template and no strong acid treatment, the application provides a method for synthesizing the mesoporous copper oxide microplate material with uniform pore structure on the carbonic paper by adopting copper nitrate hydrolysis, alkali etching and annealing, and the synthesis method of the mesoporous structure has the advantages of simple operation, good controllability and low cost. The application also relates to application of the mesoporous copper oxide as an electrocatalyst material in the field of glucose electrochemical sensing.

The invention provides a separation and extraction method for valuable metals in electroplating sludge, and belongs to the technical field of solid waste recycling. The electroplating sludge is copper-containing electroplating sludge, and the method comprises the following steps: mixing dehydrated and dried electroplating sludge with an organic acid solid auxiliary agent, carrying out gradient weak reduction pretreatment, cooling, and carrying out magnetic separation to remove iron; adding ammonia water to react, separating solid waste and collecting an ammonia-containing complex solution; adjusting the pH value to 9-10, carrying out distillation deamination at 60-70 DEG C, carrying out gas-solid waste separation, precipitating to obtain a copper hydroxide crude product, and dissolving the nickel element in the residual liquid; adjusting the pH value of the residual liquid to 10-11, carrying out two-stage distillation deamination, and precipitating to obtain a nickel hydroxide crude product; and purifying the copper hydroxide crude product and the nickel hydroxide crude product to obtain a copper hydroxide refined product and a nickel hydroxide refined product. According to the method, the dried electroplating sludge is mixed with the solid organic acid, reduction pretreatment is carried out under the conditions of different atmospheres and different temperatures, the ammonia complexing and graded deamination processes are combined, efficient recovery of copper and nickel is achieved, and the purity of the recovered metal is high.

The invention provides a method for preparing electronic-grade copper oxide by using circuit board acidic etching waste liquid, and belongs to the field of copper resource recovery. The method comprises the following steps: sequentially carrying out impurity removal, concentration crystallization, salt-alkali reaction and cleaning on the circuit board acidic etching waste liquid, and collecting to obtain a copper hydroxide crude product; dissolving and recrystallizing to obtain a copper hydroxide refined product; a carbonized ammonia water solution is added to react with the copper hydroxide refined product, and ammonia cupric carbonate is obtained after adsorption and purification; adding a surfactant and a zinc salt additive, and stirring; drying to obtain modified basic cupric carbonate; carrying out selective etching on the modified basic cupric carbonate by adopting dilute acid to obtain basic cupric carbonate particles; and calcining the basic cupric carbonate particles at 300-500 DEG C to obtain the copper oxide powder with the honeycomb structure. According to the method, on the basis of the basic step of recovering copper resources from the circuit board acidic etching waste liquid, the treatment steps of purification, grain refinement, porous etching and the like are added, so that the purity and the activity performance of a final copper oxide product are improved, and the electronic-grade copper oxide is prepared.

The invention relates to a method for recovering valuable components from high-copper and high-iron complex gold extraction broken carbon roasting slag. The method comprises the following steps: grinding and grading: grinding and grading a material to be treated into a fine material with the particle size of-0.074 mm accounting for 70%-80%; flotation decarburization is conducted, specifically, primary roughing is conducted on the fine material slurry, carbon-containing concentrate and tailings are obtained, and the carbon-containing concentrate is returned to an original roasting ashing system to be roasted again to obtain concentrate roasting slag; selective leaching of copper: feeding the tailings and the concentrate roasting slag into an ammonia-chlorine solution for pre-leaching to obtain copper-containing leaching liquid and leaching slag; first-stage preferential leaching is conducted, specifically, the leaching residues are fed into a cyaniding system to be subjected to first-stage preferential leaching, and a gold and silver pregnant solution and first-stage leaching residues are obtained; second-stage intensified leaching is conducted, specifically, the first-stage leaching residues are subjected to second-stage intensified leaching, and gold and silver pregnant solution and second-stage leaching residues are obtained; and recovery of element copper: conveying the copper-containing immersion liquid to a copper recovery system for distillation to obtain ammonia water and a copper hydroxide precipitate. According to the method, efficient comprehensive recovery of gold, silver and copper in the high-copper-iron complex gold extraction broken carbon roasting slag is achieved.

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 present invention includes compositions and methods of for treating plants infected with fungal pathogens by contacting an infected plant or plant at risk of infection with a fungicidal composition comprising an fungicide selected from copper compound such as copper octanoate or copper hydroxide, or a triazole fungicide such as myclobutanil, propionazole, tebuconazole or epoxiconazole, an enhancer selected from apyrase inhibitors, e.g., N-(m-tolyl)-[1,1′-biphenyl]-4-sulfonamide, S-heptyl 2-oxo-2H-chromene 3-carbothioate, 3-(N-(4-bromophenyl) sulfamoyl)-N-(3-nitrophenyl)benzamide, or (E)-3-methyl-N-(1-(naphthalen-2-yl) ethylidene)benzohydrazide and, optionally, a phytologically-acceptable inert carrier.

The invention relates to the technical field of adsorption type materials for extracting water from air, in particular to an MOF compound adsorbent based on foamy copper as well as a preparation method and application of the MOF compound adsorbent. Foamy copper which is smooth in surface, provided with communicating pore channels and excellent in heat transfer performance is selected as a substrate material, in-situ etching is conducted on the foamy copper in a strong alkali solution to grow a copper hydroxide nanowire array, then the copper hydroxide nanowire array and 2, 3, 6, 7, 10, 11-hexahydroxy triphenylene are used for converting copper hydroxide into interwoven and wound Cu3 (HHTP) 2 nanorods through a hydrothermal method, and the Cu3 (HHTP) 2 nanorods are prepared. The MOF foam composite adsorbent material with the three-dimensional porous structure based on the foamy copper is obtained. The Pi-Pi transition of 2, 3, 6, 7, 10, 11-hexahydroxy triphenylene as a ligand in Cu3 (HHTP) 2 can absorb ultraviolet light and visible light and further convert the ultraviolet light and visible light into heat energy, so that the material has excellent photo-thermal conversion capacity and relatively high heat conduction capacity and stability, and photo-thermal autonomous desorption can be realized under the irradiation of sunlight when adsorption is saturated.

The invention discloses a method for improving the selectivity of electrocatalytically reducing acetylene into 1, 3-butadiene by using a copper hydroxide hydrophobic nano array, which comprises the following steps: soaking a copper mesh in a mixed solution of NaOH and (NH4) 2S2O8 to obtain a Cu (OH) 2 self-supporting nano array, and then soaking in an ethanol solution of 1-dodecyl mercaptan to obtain a Cu (OH) 2 hydrophobic self-supporting nano array modified by 1-dodecyl mercaptan. A hot press is adopted to tightly press the dried hydrophobic self-supporting nano array and carbon paper to form a working electrode, a cathode chamber and an anode chamber are separated through an anion exchange membrane, electrolyte is composed of a KOH solution, and a peristaltic pump is used to enable a liquid phase to continuously circulate. According to the method, acetylene is subjected to electrocatalytic reduction to obtain 1, 3-butadiene by adopting a three-electrode system, and high-selectivity conversion of acetylene into 1, 3-butadiene is realized.

The invention discloses a method for preparing a copper oxide nanowire material by using a dynamic gas phase atmosphere, and belongs to the technical field of seawater desalination and photo-thermal materials. The technical problem that the service life of the copper oxide nanowire material cannot be ensured while the hydrophilicity of the copper oxide nanowire material is realized in the prior art is solved. According to the technical scheme, the preparation method comprises the following steps: immersing a pretreated copper net into a mixed solution of persulfate and hydroxide, and growing a copper hydroxide nanowire on the copper net through a chemical deposition method; and drying the copper hydroxide nanowire grown on the copper mesh, and then carrying out heat treatment to obtain the copper oxide nanowire loaded on the copper mesh. The preparation method has the beneficial effects that through heat treatment in a dynamic gas phase atmosphere, the hydrophilicity of the copper oxide nanowire is improved, and meanwhile, the copper oxide nanowire has a better long-term service life.

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 application discloses a preparation method and purification process of copper hydroxide, a certain amount of anhydrous copper sulfate is accurately weighed, and a certain volume of deionized water is added to prepare a solution with a certain concentration, a copper ammonia solution is prepared: slurry is prepared from circuit board sludge, screening is performed, ammonium bicarbonate or ammonium carbonate is added for reaction, and a copper ammonia solution containing carbonate or bicarbonate is obtained through purification; in addition, high-purity copper powder is added into concentrated ammonia water, concentrated hydrogen peroxide solution is slowly dropped into the concentrated ammonia water, and the dropping is continued until no large amount of bubbles is generated in the solution, and the solution is filtered to obtain a clear indigo blue solution. The production process adds the step of adding a stabilizer and stirring, guarantees the stable state of the copper hydroxide crystal, and enables the copper hydroxide crystal to remain unchanged into copper oxide for one year in an environment with a temperature as high as 60 degrees.

The application provides an amino acid composite reagent system and a method for treating electronic waste to prepare high-purity glycine copper, and belongs to the technical field of metal hydrometallurgy and resource recycling. The application builds an ammonia catalytic reduction mechanism by designing an amino acid composite reagent system, greatly improves the leaching rate, simultaneously inhibits the dual effects of copper hydroxide precipitation and glycine chelation, and realizes efficient solution of copper ions; through narrow window regulation technology of pH at 9.5±0.2, the stability of ammonia, the activity of glycine anion are maintained, and the selective leaching rate of copper is ensured; a directional crystallization process of leaching solution is constructed, the "self-assembly directional crystallization" process of glycine copper chelate is used, based on the saturation concentration of glycine copper in the leaching solution and the stable chelate structure, through three-stage crystallization precise regulation, the preparation of high-purity crystal is realized. The process realizes the closed-loop crystallization system of "zero addition of crystal seeds and zero wastewater discharge" of the copper-containing complex leaching solution of electronic waste.

The present invention relates to the technical field of electrochemical energy materials, and specifically discloses a molybdenum nitride / nickel cobalt nitride nanosheet heterostructure electrocatalytic material, its preparation method and application. The method comprises S1, preparing copper hydroxide nanowires loaded on copper foam; S2, preparing copper nanowires loaded on copper foam; S3, preparing copper nanowire-loaded molybdenum-doped nickel cobalt nanosheets; S4, placing the copper nanowire-loaded molybdenum-doped nickel cobalt nanosheets in a tube furnace, and nitriding them in an ammonia nitrogen atmosphere to obtain a molybdenum nitride / nickel cobalt nitride nanosheet heterostructure electrocatalytic material. The internal resistance of the material is reduced by electron transfer and heterostructure between molybdenum nitride and nickel cobalt nitride, and compared with precious metal platinum wire, the material has excellent high current density hydrogen evolution performance. The preparation method provided by the present invention has the advantages of simple synthesis process, short synthesis cycle and low production cost. In addition, no hydrothermal reaction is required during preparation, the material has high safety and reliable repeatability, and is very suitable for large-scale industrial production.

Hollow spherical copper hydroxide and a preparation method therefor. The preparation method comprises: uniformly mixing a seed crystal with water to obtain a seed crystal dispersion, wherein the seed crystal comprises hydrochloric-acid-catalyzed basic copper chloride; adding an impurity-removed acidic copper-containing etching waste liquid, ammonia water and a stabilizer to the seed crystal dispersion to obtain a mixed reactant with a pH value of 4-5.5; and heating the mixed reactant at a heating temperature of 40-80°C, stirring same at a stirring speed of 100-200 r / min, separating out a solid substance after reaction, then drying same to obtain an intermediate, wherein the intermediate comprises spherical basic copper chloride; uniformly mixing the intermediate and a solvent to obtain an intermediate dispersion; adding ammonia water to the intermediate dispersion while stirring, wherein the mass ratio of the intermediate to the ammonia water is (1 : 1.05)-(1 : 1.15), separating out a precipitate after reaction, then washing and drying same to obtain the hollow spherical copper hydroxide.

The application discloses a copper-bismuth bimetallic catalyst and a preparation method and application thereof. The copper-bismuth bimetallic catalyst comprises a copper substrate and copper-bismuth nanowires grown on the copper substrate, the copper-bismuth nanowires comprise copper nanowires and a metal bismuth layer loaded on the copper nanowires, and the mass fraction of bismuth in the copper-bismuth nanowires is 40% to 60%. The preparation method of the catalyst comprises the following steps: after in-situ growth of copper hydroxide nanowires on the copper substrate, the copper-bismuth bimetallic catalyst is prepared through heat treatment, electrochemical reduction treatment and bismuth deposition. Meanwhile, the copper-bismuth bimetallic catalyst can not only make full use of the copper and bismuth bimetallic effect, effectively improve the activity, stability and selectivity of electrocatalytic reduction of carbon dioxide, but also has the advantages of simple and controllable preparation, wide application potential window and wide application environment.

The utility model discloses a copper hydroxide production dehydration device which comprises a bottom plate, a centrifugal machine is arranged in the center of the upper surface of the bottom plate, a plurality of second supporting columns are arranged on the periphery of the centrifugal machine, and one end of each second supporting column is fixedly connected to the upper surface of the bottom plate. A mounting plate is fixedly connected to the end, away from the bottom plate, of the second supporting column, a filtering device is arranged on the upper surface of the mounting plate and comprises a filtering barrel, a cover plate, a hydraulic cylinder, a hydraulic pipeline, a hydraulic pump, a liquid outlet pipe, an oil tank, a piston rod and an extrusion plate, and the bottom end of the filtering barrel is fixedly mounted on the upper surface of the mounting plate. The bottom end of the cover plate is fixedly mounted on the upper surface of the filter barrel, one end of the hydraulic cylinder is fixedly mounted in the center of the cover plate, and the piston rod is movably connected to the interior of the hydraulic cylinder. Through the structure, the flowability of copper hydroxide at a relatively low temperature is improved, and the viscosity of copper hydroxide is reduced, so that the dehydration efficiency is improved.

The invention provides a three-dimensional multi-stage needle tip array type Bi-CuO integral electrode as well as a preparation method and application of the three-dimensional multi-stage needle tip array type Bi-CuO integral electrode. The integral electrode comprises foamy copper, a copper oxide needle tip array layer growing on the foamy copper and a bismuth nanosheet array layer uniformly covering the surface of a copper oxide needle tip. The integral electrode has a multi-stage self-supporting structure, so that catalyst aggregation or stacking is effectively avoided, and the specific surface area of exposed active sites is remarkably increased; and the electrode also has multiple heterogeneous interfaces, and shows excellent catalytic activity, selectivity and electrochemical window when being used as a working electrode for electrically reducing CO2 to prepare formate. The preparation method comprises the following steps: generating the copper hydroxide nanowire layer on foamy copper in situ by using a chemical oxidation method, performing annealing treatment in air to form the copper oxide needle tip array layer, and depositing the bismuth nanosheet array layer on the surface of the copper oxide needle tip by using a wet chemical method to obtain the integral electrode. The preparation method is novel and simple, the use of a binder is avoided, the operability is high, and the preparation method has a good application prospect.

The invention relates to a copper-cobalt bimetallic phosphide heterojunction and a preparation method and application thereof.The preparation method comprises the following steps that 1, pretreated foamy copper is soaked in an ammonium persulfate and sodium hydroxide solution, and the substance serves as a strong oxidant and is used for reacting to form copper hydroxide; (2) mixing cobalt nitrate hexahydrate with methanol, and putting copper hydroxide to react for two days; 3) adding dimethylimidazole for continuous reaction, and then washing, drying and phosphorizing at room temperature; compared with the prior art, the preparation method is simple in process and low in cost; the prepared catalyst has a heterojunction nanowire array structure, more active sites are provided, charge redistribution at a phosphide heterojunction interface is promoted by electron directional movement, the electron structure of the catalyst can be adjusted, and adsorption energy of reactants and intermediates on the active sites can be changed, so that reaction kinetics is promoted. The catalyst product is mainly ammonia gas, is good in stability and can be repeatedly used for multiple times.

The invention relates to a white polycarbonate composition as well as a preparation method and application thereof. The white polycarbonate composition comprises the following components in parts by weight: 75-97 parts of polycarbonate, 3-8 parts of titanium dioxide and 0.1-1 part of copper hydroxide. A certain amount of titanium dioxide is added into polycarbonate, so that the white polycarbonate composition is white. The average particle size of the titanium dioxide is regulated and controlled within a specific range, light reflection of the white polycarbonate composition can be reduced, so that more laser is absorbed, more heat is released, and the laser welding strength is improved to a certain extent. On the basis of regulating and controlling the average particle size of the titanium dioxide, the linear copper hydroxide is added, so that the laser welding strength of the white polycarbonate composition can be obviously improved on the premise of not influencing the white color of the white polycarbonate composition.

A method of inhibiting a cancer cell growth includes contacting the cancer cell with a Cu2(OH)3NO3 / CaSiO3@g-C3N4 nanocomposite material containing graphitic carbon nitride (g-C3N4), copper hydroxide nitrate (Cu2(OH)3NO3) and calcium silicate (CaSiO3), achieving an inhibition efficiency on human breast carcinoma (MCF-7) and human hepatocellular carcinoma (HepG-2) cell growth of greater than 95% in an in-vitro cellular viability assay.

The invention provides an amino acid composite reagent system and a method for preparing high-purity copper glycinate by treating electronic waste through the amino acid composite reagent system, and belongs to the technical field of metal hydrometallurgy and resource regeneration. According to the method, an amino acid composite agent system is designed, an ammonia catalysis barrier reduction mechanism is constructed, the leaching rate is greatly increased, the double effects of copper hydroxide precipitation and glycine chelation are synchronously inhibited, and efficient dissolution of copper ions is achieved; the ammonia stability and the glycine anion activity are maintained through a narrow window regulation and control technology with the pH value being 9.5 + / -0.2, and the copper selective leaching rate is guaranteed; the method comprises the following steps: constructing a leaching solution directional crystallization process, and preparing a high-purity crystal by utilizing a self-assembly directional crystallization process of a copper glycinate chelate based on the saturation concentration of copper glycinate in the leaching solution and a stable chelation structure through precise regulation and control of three-stage crystallization. According to the process, a closed-loop crystallization system of'zero seed crystal addition and zero wastewater discharge 'of the copper-containing complex leaching solution of the electronic waste is realized.

This invention belongs to the field of catalyst technology, and relates to a flower-like multifunctional CuO@MnO2 composite material, its preparation method, and its application. The composite material constructs a flower-like core-shell structure with CuO as the core and thin-film MnO2 as the shell. The preparation method is as follows: rod-shaped copper hydroxide is added to deionized water and ultrasonically mixed to obtain a copper hydroxide suspension; potassium permanganate is dissolved in the copper hydroxide suspension and ultrasonically mixed to obtain a mixed solution B; mixed solution B is subjected to a hydrothermal reaction, and after the reaction is completed, it is cooled, washed, and dried to obtain the flower-like multifunctional CuO@MnO2 composite material. This method not only maximizes the interfacial contact area between the two phases and promotes interfacial charge transfer to achieve a synergistic catalytic effect, but also provides a MnO2 shell with good stability, forming a physical and chemical barrier for the CuO core and effectively inhibiting the excessive leaching of copper ions. Furthermore, the prepared CuO@MnO2 exhibits good catalytic performance, stability, and reproducibility.