1482 results about "Cu2 ions" patented technology

The invention belongs to the technical field of medical materials, discloses hyaluronic acid modified phosphorus-doped double-copper monatomic nano-enzyme (Cu2 / PNC at HA) and a preparation method and application thereof, and aims to solve the problems of low catalytic efficiency and poor selectivity of nano-enzyme. The preparation method comprises the following steps: firstly synthesizing a ZIF-8 carrier, then coating double copper ions and poly (cyclotriphosphoryl-4 ', 4'-diaminodiphenyl ether) (PZM) on the surface of the ZIF-8 through polymerization, and further performing pyrolysis to obtain the Cu2 / PNC nano-enzyme. The catalytic efficiency of the Cu2 / PNC nano-enzyme is remarkably improved through the phosphorus doping effect and double copper single atoms. The hyaluronic acid is adopted to coat the Cu2 / PNC nano-enzyme, so that the biocompatibility is improved, the anti-tumor activity is remarkably improved, the application of the Cu2 / PNC nano-enzyme in the field of biomedicine is expanded, and the huge potential in the aspect of tumor catalytic treatment is shown.

The invention relates to an SSZ-39 molecular sieve and preparation and application thereof.The preparation method comprises the following steps that 1, after water, an alkali source and a template agent are mixed, mesoporous Y zeolite and a silicon source are added, the mixture is stirred to be uniform, and the mixture is aged to be in a white gel shape; (2) transferring the obtained white gel into a reaction kettle, carrying out crystallization treatment, and filtering, washing, drying and calcining a crystallized product to obtain a Na-SSZ-39 molecular sieve; (3) carrying out ammonium ion exchange on the Na-SSZ-39 molecular sieve, filtering, washing, drying and calcining to obtain an H-SSZ-39 molecular sieve; and (4) carrying out copper ion exchange on the H-SSZ-39 molecular sieve, filtering, washing, drying and calcining to obtain the Cu-SSZ-39 catalyst. Aluminum used in the method is provided by mesoporous Y zeolite, the pure-phase SSZ-39 molecular sieve can be synthesized in a wide gel range, the crystallization time is shortened to 24 h, and after copper ion exchange, the pure-phase SSZ-39 molecular sieve shows high denitration activity in the selective catalytic reduction reaction of nitrogen oxide ammonia.

The invention discloses a manganese dioxide nanoflower loaded copper-gallium electrocatalytic synthesis ammonia material prepared on the basis of gallium-based liquid metal. Manganese dioxide nanoflowers are synthesized through control of reducibility and surface characteristics of liquid metal, copper ions are anchored through electronegativity of manganese dioxide in an aqueous solution, and meanwhile, the copper gallium catalytic material is generated on the surface of manganese dioxide through in-situ reduction by ingeniously and secondarily utilizing the reducibility of the liquid metal. The thickness of the obtained nanoflower sheet layer is 2-20 nm, the copper-gallium alloy is spherical, and the diameter of the copper-gallium alloy is 20-80 nm. The process is safe, simple to operate and suitable for high-flux preparation. The catalytic material can work under various acid-base systems, and under the conditions that the pH is 13, the C (NO3 <->) is 0.1 M and the potential is-0.5 V vs RHE, the ammonia production rate is 4.75 mgNH3 / (mgcat.h), and the Faraday efficiency can reach 99.36%.

The invention discloses a high-dispersion nitrogen-doped copper-based catalyst and a preparation method and application thereof.The catalyst is composed of a carrier and an active metal component loaded on the carrier, the carrier of the catalyst is composed of a carbon source and a nitrogen source, and the active metal component is copper; when the carbon source and the nitrogen source are combined to serve as the carrier, copper ions can be complexed with functional groups rich in the carrier, meanwhile, copper is fixed, further growth of copper nanoparticles is inhibited, and therefore the dispersity of copper in the catalyst is improved; the catalyst has high catalytic activity when applied to catalysis of methanol liquid-phase reforming hydrogen production reaction, can reduce the temperature of liquid-phase hydrogen production reaction and ensure that the hydrogen production rate is not lower than 97.70 [mu] mol H2 / gcat / s, the content of carbon monoxide in the product is not higher than 0.0845%, the content of methane is not higher than 0.0034%, and the hydrogen selectivity is high.

The invention relates to a high-barrier antibacterial polylactic acid packaging material and a preparation method thereof, and belongs to the technical field of biodegradable packaging materials. The technical problems that a traditional polylactic acid material is insufficient in barrier property, poor in antibacterial performance and difficult to meet the packaging requirements of livestock and poultry meat, food and medicine are solved. A graphene oxide lamellar material is subjected to copper ion functionalization treatment and is bridged with tannic acid molecules through copper ions to form a nano filler, and then the filler is blended with a plasticized polylactic acid solution to prepare the membrane. The preparation method comprises the following steps: preparing a copper ion functionalized dispersion liquid from graphene oxide and copper nitrate, self-assembling the copper ion functionalized dispersion liquid and tannic acid under the condition that the pH is 8-10 to generate a nanofiller, uniformly dispersing the nanofiller, mixing the nanofiller with polylactic acid, polyethylene glycol and glycerol according to a specific mass ratio, coating to form a film, and controlling solvent volatilization conditions to obtain the high-performance packaging material. According to the method, the oxygen barrier property and the antibacterial activity of the material are remarkably improved through uniform dispersion of the nanofiller and reinforcement of a coordination network. The obtained material is suitable for packaging foods such as livestock and poultry meat.

The invention discloses a high-activity chemical copper plating solution and a chemical copper plating method, and relates to the technical field of chemical copper plating, and the chemical copper plating solution comprises the following components: a copper ion source, a biological enzyme, a natural polymer complexing agent, a pH regulator and a stabilizer; according to the method, the specific bio-enzyme is adopted as the chemical copper plating catalyst, the remarkable catalytic effect is shown, the bio-enzyme has efficient selectivity and catalytic activity, reduction and deposition of copper ions can be accelerated under the mild condition, and therefore reaction energy consumption and equipment requirements are reduced, meanwhile, use of chemical reagents is reduced, and the cost is reduced. In addition, natural polymer complexing agents such as chitosan and sodium alginate have good biocompatibility and degradability and can form a stable complex with copper ions, the stability and the copper plating effect of the plating solution are enhanced, and by designing the natural polymer complexing agent with a specific structure such as a hyperbranched structure, the copper plating effect of the plating solution is improved. And the complexing ability and the performance of the copper plating solution are further improved.

The invention relates to the technical field of new material detection, in particular to a copper foil coating content detection method. The method comprises the following steps: preparing a plurality of mixed standard solutions; the mixed standard solution comprises copper ions and at least one to-be-detected element ion; in the plurality of mixed standard solutions, the copper ion concentrations are the same and are first preset concentration values; measuring a plurality of mixed standard solutions, and establishing a standard curve between a theoretical value and a measured value of the ion concentration of each to-be-measured element; dissolving a plating layer on the surface of the to-be-detected copper foil by using nitric acid, and filtering to obtain a to-be-detected sample solution; adding copper salt into the to-be-detected sample solution to obtain a to-be-detected analysis solution; measuring the to-be-measured analysis solution to obtain the measurement concentration of each to-be-measured element ion; according to the measured concentration of each to-be-measured element ion and the corresponding standard curve, the corrected content of each to-be-measured element ion is obtained. The problem that an existing copper foil coating content detection method is low in detection accuracy is solved.

The invention provides a modified MOF synergistic resin-based composite material as well as a preparation method and application thereof, and belongs to the technical field of pollutant treatment. The method for preparing the resin-based composite material comprises the following steps: S1, mixing an MOF raw material, a modifier, resin and a solvent, and stirring to obtain a mixture; s2, performing solvothermal reaction on the mixture obtained in the step S1 to obtain a modified MOF synergistic resin-based composite material; wherein in the step S1, the MOF raw material is composed of ZrCl4 and 2-aminoterephthalic acid, and the modifier is carboxylic acid containing a sulfur element; in the step S2, the temperature of the solvothermal reaction is 100-150 DEG C. The resin-based composite material synthesized by the method has higher copper ion and antimony ion adsorption capacity.

The invention provides a method for selective copper deposition in copper smelting waste acid, and relates to the technical field of hydrometallurgy. The method for selectively depositing copper in the copper smelting waste acid comprises the following steps: mixing the copper smelting waste acid and a sulfur-containing organic compound to carry out copper precipitation reaction, and carrying out solid-liquid separation to obtain copper-removed liquid and a copper deposition product; sulfur-containing functional groups in the sulfur-containing organic compound comprise one or more of sulfonic acid groups, sulfydryl and thioether bonds. The sulfur-containing functional group in the sulfur-containing organic compound reacts with the copper ions in the reaction system for selective precipitation, so that the copper ions in the waste acid can be captured and removed, and the method has the advantages of high copper selectivity, high copper precipitation rate, fast reaction and mild conditions, does not carry rhenium element, can greatly reduce the loss of rhenium, and simplifies the process flow.

This invention belongs to the field of wastewater treatment technology, specifically relating to a method for removing metallic impurities from acidic copper-containing etching wastewater at room temperature and pressure. The method includes the following steps: S1, adding an oxidant to the acidic copper-containing etching wastewater to conduct an oxidation-reduction reaction, obtaining a pretreatment solution; S2, adding phosphoric acid or soluble phosphate to the pretreatment solution, adjusting the pH to 1.3-1.7 using a pH adjuster, stirring, and filtering to obtain a purified copper-containing solution. The method provided by this invention achieves high removal rates for Fe, Ni, Zn, Ca, and Mg, while maintaining a high copper ion content. It can recycle and regenerate high-purity copper salt products for application in food, cosmetics, medical, electroplating, and other fields, while also reducing hazardous waste generation, improving economic efficiency, and significantly reducing costs.

The present invention discloses a copper-molybdenum metal etching liquid composition, and the raw materials for preparing the composition include a main agent and an auxiliary agent, including hydrogen peroxide, an organic acid, an amino base, a stabilizer, an electrochemical inhibitor, an alcohol additive, and a solvent. The present invention adopts ethylene glycol and an electrochemical inhibitor to synergize, reduce the surface tension between the etching solution and the metal film layer, enhance the adhesion rate of the etching solution and the metal film layer, and can perfectly solve the chamfering problem in the etching process. And by using isobutanolamine and triethanolamine as amino base I, copper ions can be complexed, the decomposition rate of hydrogen peroxide can be stabilized, the etching rate balance can be maintained, and a good etching morphology can be achieved, with excellent Taper angle, CD-Bais, and small variation, so that it can load a copper ion concentration of 12000ppm, and the lower limit of molybdenum residue reaches 0.45μm, with an excellent etching range, meeting the impact of customer process fluctuations on production, and being environmentally friendly, and the cost of waste liquid treatment is low.

The invention discloses a copper surface micro-etching coarsening solution for a fine circuit as well as a preparation method and application of the copper surface micro-etching coarsening solution, and relates to the technical field of printed circuit board manufacturing. The copper surface micro-etching coarsening solution for the fine circuit is prepared from, by mass concentration, 60 g / L to 100 g / L of sulfuric acid, 40 g / L to 60 g / L of hydrogen peroxide, 0.5 g / L to 2 g / L of zinc sulfate, 10 g / L to 30 g / L of copper ions, 0.5 g / L to 1 g / L of pyridine heterocycle-containing Schiff base, 10 g / L to 100 g / L of ethyl alcohol, 1 g / L to 3 g / L of 2-mercaptobenzothiazole, 1 g / L to 5 g / L of methionine and 1 g / L to 5 g / L of polyacrylamide. According to the copper surface micro-etching coarsening solution, the 2-mercaptobenzothiazole and the methionine in the copper surface micro-etching coarsening solution can enable the copper surface to form a honeycomb structure under the low micro-etching amount, the zinc sulfate and the pyridine heterocyclic ring-containing Schiff base can form a composite film layer with copper ions on the surface of the honeycomb structure, and the interlayer binding force is improved.

The invention discloses a copper ion complex based on a protein template as well as a preparation method and application of the copper ion complex. The copper ion complex takes a protein template as a carrier, and is obtained by in-situ complexing Cu < 2 + > with a copper ion carrier; the preparation method is a one-step green synthesis technology, mild synthesis conditions not only avoid the use of an organic solvent, but also do not need large-scale instruments and the like, so that the synthesis cost is greatly saved, and the formed copper ion complex has the advantages of high drug effect, small toxic and side effects, lasting effect, good stability and the like, and is suitable for industrial production. The problems that an existing copper ion complex is poor in solubility and low in bioavailability are solved, and the copper ion complex is applied to preparation of anti-tumor and / or antibacterial drugs and has extremely high anti-tumor and antibacterial activity.

The invention relates to a floating type copper-loaded sodium alginate hydrogel ball as well as a preparation method and application thereof, and belongs to the technical field of water ecological restoration. The technical problem to be solved by the invention is to provide the preparation method of the floating type copper-loaded sodium alginate hydrogel ball. The method comprises the following steps: preparing a solution A and a solution B, wherein the solution A is prepared from sodium alginate, citrate, an acidic pH regulator, hydrogen peroxide and water; the solution B consists of copper sulfate pentahydrate, citrate, a pH regulator and water; dropwise adding the solution A into the solution B to obtain hydrogel balls; and filtering and washing. The hydrogel ball can float on the water surface and release copper ions in a low dosage for a long time, blue-green algae on the water surface are continuously killed, the influence on the water body is small, and the risk of water body pollution caused by excessive copper ion release can be greatly reduced; the algicide feeding device can effectively reduce the feeding frequency of the algicide, also reduces the labor cost caused by long-period feeding of the algicide, can float on the water surface, is easy to recycle, and does not cause secondary pollution to the water body.

The invention belongs to the technical field of water treatment, and particularly provides a nitrogen-oxygen co-doped hypha / spruce composite adsorption material and a copper-containing sewage treatment method. According to the invention, the copper-containing sewage is pretreated by using the solid fermentation product, and then the copper-containing sewage is post-treated by using the nitrogen-oxygen co-doped hypha / spruce composite adsorption material prepared under specific conditions; wherein in the pretreatment stage, microbial metabolites in a solid fermentation product preliminarily capture free copper ions (Cu < 2 + >) through complexation, the toxicity of the sewage is reduced, and meanwhile, the copper ions are partially converted into a form which is easier to adsorb. In the post-treatment stage, the nitrogen-oxygen co-doped hypha / spruce composite adsorption material plays a key role, and efficient interception and adsorption of copper ions are achieved. In conclusion, the treatment method for the copper-containing sewage comprises a pretreatment stage and a post-treatment stage, the two stages are in synergistic interaction, and finally the removal rate of the heavy metal copper can be effectively increased.

The invention relates to a carboxylic acid ligand-copper metal organic framework nano material, a preparation method thereof and an injection. The carboxylic acid ligand-copper metal organic framework nano material is of a polycrystal MOF structure formed by connecting carboxylic acid ligands and copper ions through coordinate bonds; the carboxylic acid ligand comprises at least one of dicarboxylic acid and tricarboxylic acid; preferably, the dicarboxylic acid comprises at least one of itaconic acid and fumaric acid, and the tricarboxylic acid comprises at least one of aconitic acid and citric acid; the valence states of the copper ions comprise zero valence, + 1 valence and + 2 valence; preferably, based on the total amount of the copper ions being 100 at%, the total content of Cu0 and Cu + is 85-90 at%, and the content of Cu2 + is 10-15 at%.

The invention discloses a natural plant-based spinning yarn and a preparation method thereof, and relates to the technical field of spinning yarns. When the natural plant-based spinning yarn is prepared, palm fibers are pretreated with a sodium chlorite solution and a sodium hydroxide solution, and pretreated palm fibers are prepared; reacting the pretreated palm fibers with ammonium dihydrogen phosphate to prepare phosphorylated modified palm fibers; reacting the phosphorylated modified palm fibers with calcium nitrate, diammonium hydrogen phosphate and allylphosphonic acid to grow hydroxyapatite in situ, so as to prepare hydroxyapatite composite palm fibers; 4-allyl thiosemicarbazide reacts with salicylaldehyde to prepare an antibacterial agent intermediate, and the antibacterial agent intermediate is complexed with copper ions to prepare an antibacterial agent; grafting an antibacterial agent and an anti-aging agent on the hydroxyapatite composite palm fibers to prepare modified palm fibers; and spinning the modified palm fiber to obtain the natural plant-based spun yarn. The prepared natural plant-based spinning yarn has the advantages of being high in breaking strength, antibacterial, flame-retardant and anti-aging.

The invention discloses a preparation method and application of pH-responsive double-synergistic-therapy hydrogel. The hydrogel is mainly prepared from oxidized fucoidin (OFU), carboxymethyl chitosan (CMCs), zinc peroxide / copper nanoparticles (ZnO < 2-Cu >) and arginine (L-ARG). Under a gastric acid condition, the hydrogel generates H2O2 through zinc peroxide, copper ions catalyze H2O2 through a Fenton-like reaction to generate OH <->, arginine can catalyze H2O2 to generate NO, and the copper ions and the arginine act together to destroy a helicobacter pylori biological membrane and kill bacteria. The hydrogel has good injectability, self-healing property and adhesivity, is beneficial to intragastric injection application and can be adhered to the stomach, and the administration concentration of an infected part is improved; the antibacterial effect is generated only under the gastric acid condition, the helicobacter pylori biological membrane can be destroyed, and the helicobacter pylori antibacterial agent can be applied to the helicobacter pylori which is difficult to eradicate in the stomach of the human body.

The invention discloses a preparation method of a composite material for improving the utilization rate of solar blue-green photocatalytic degradation of water pollutants, which comprises the following steps: firstly, preparing a Cu-ZnO nano composite material by doping zinc oxide with copper ions, and reducing the forbidden band width, so that the Cu-ZnO nano composite material can utilize sunlight with longer wavelength, and the absorption peak of the Cu-ZnO nano composite material generates red shift; secondly, decolorizing the wood by adopting an alkaline sodium sulfate method, removing lignin in the wood to leave a cavity, and growing the Cu-ZnO nano composite material in the treated wood and on the surface of the treated wood by adopting a hydrothermal method to form a composite material with a catalyst growing in a similar resonant cavity, as shown in Figure 1; the utilization rate of a semiconductor catalyst to blue-green light is improved, a cavity structure formed by the treated wood can have a certain local effect on long-wavelength light, the purpose of fully utilizing long-wave sunlight for multiple times is achieved, and the blue-green photocatalytic efficiency is improved.

The invention discloses a preparation process of a high-strength anti-crack and anti-seepage vertical shaft lining concrete material, which comprises the following steps: (1) uniformly mixing aggregate with a solution containing copper ions, drying to remove moisture, dropwise adding saturated lime water containing alkaline substances into the mixture, and drying to remove moisture to obtain pretreated aggregate; and (2) the pretreated aggregate is placed in a carbon monoxide atmosphere for reduction treatment, the reduction temperature is higher than the melting point of copper, and the surface modified aggregate is obtained after reduction treatment is completed. The surface modified coarse aggregate and the surface modified fine aggregate are respectively prepared according to the method. And (3) uniformly mixing the cement binding material, the surface modified coarse aggregate, the surface modified fine aggregate, the modified fiber, the solid waste-based powder filler, emulsified asphalt and a water reducing agent, adding mixing water, and uniformly mixing to obtain the concrete material. The concrete material disclosed by the invention has good mechanical strength and crack resistance and also has good water seepage resistance, and the service life of the pumped storage power station vertical shaft is effectively prolonged.

The invention provides a simulated aging test method for an antifouling coating. The simulated aging test method comprises the following steps: S1, constructing a natural aging performance model of the antifouling coating; s2, constructing an accelerated aging model of the antifouling coating and acquiring an acceleration ratio N of natural aging to accelerated aging; s3, based on an accelerated aging model, acquiring an acceleration period Mi corresponding to a critical threshold R (temporary i) of a copper ion exudation rate, wherein the predicted life Lp (temporary i) of the antifouling coating is equal to Mi * N; and S4, based on a natural aging model, obtaining a predicted copper ion exudation rate R < pre-i > corresponding to the predicted life Lp < pre->, judging whether R < pre-i >-R < critical i > / R < critical i > is less than or equal to 10%, if so, outputting a near threshold R < critical i > and the predicted life Lp < pre-i >, and if not, adjusting the critical threshold of the copper ion exudation rate to R < critical i + 1 > and returning to the step S3. According to the method, the performance failure threshold value of the antifouling coating is taken as a boundary condition, the performance of the antifouling coating is rapidly evaluated, the service life of the antifouling coating is quantitatively predicted, the prediction result is subjected to cooperative cross validation through linkage double models, and the reliability is improved.

The invention discloses a device and a method for recycling gold ions in copper ammonia thiosulfate leachate, and belongs to the technical field of hydrometallurgy and precious metal recycling. An anode chamber and a cathode chamber which are physically and spatially isolated are built, so that the reduction reaction of the gold ions is only carried out in the cathode chamber, and only the oxidation reaction of metal zinc is carried out in the anode chamber. In order to avoid deposition of copper ions in the gold ion reduction process, before gold deposition, the existence form of the copper ions is regulated and controlled, Cu (NH3) 4 < 2 + > in a solution is converted into Cu (S2O3) 35 <-> which is difficult to deposit, then gold deposition is carried out, and after gold deposition is completed, the Cu (S2O3) 35 <-> in the solution is recovered to Cu (NH3) 4 < 2 + > by means of regulation and control of an electrochemical method. And the solution after gold ion deposition can be returned to the leaching stage for recycling under the condition that the copper ion concentration is not interfered.

The invention relates to the field of biomedicine, particularly provides a copper-based nano-enzyme as well as a preparation method and application thereof, and aims to solve the problems that in the prior art, clinical treatment on primary sclerosing cholangitis (PSC) is difficult in diagnosis and lacks of effective treatment drugs. The copper-based nano-enzyme comprises a nano-enzyme carrier and a copper-based nano-enzyme, wherein the nano-enzyme carrier is a two-dimensional nanosheet formed by copper ions, gallic acid and ursodesoxycholic acid through coordinate bonds; the probe molecule is a cyanine dye molecule connected to the surface of the nano-enzyme carrier through a covalent bond; wherein the fluorescence intensity of the copper-based nano enzyme is enhanced after the action of the alkaline phosphatase. The three functions of alkaline phosphatase responsive diagnosis, nano-enzyme catalytic treatment and ursodesoxycholic acid hepatic targeting are innovatively and synergistically integrated into one nano platform, the treatment function can be executed while specific imaging diagnosis is performed on diseases, and a new strategy is provided for diagnosis and treatment of diseases such as PSC.

The invention relates to the technical field of ceramics, in particular to mottle crack glazed ceramic and a preparation method thereof.The ceramic comprises a green body, ground glaze and cover glaze, and the ground glaze is prepared from, by weight, 30-35 parts of kaolin, 25-30 parts of quartz, 20-25 parts of feldspar, 8-12 parts of ferric oxide, 5-8 parts of calcium carbonate and 3-5 parts of borax; the cover glaze is prepared from the following raw materials in parts by weight: 35 to 40 parts of feldspar, 25 to 30 parts of quartz, 6 to 10 parts of copper oxide, 5 to 8 parts of granular rock powder, 8 to 12 parts of borax and 5 to 8 parts of clay. Embedding porous particles into the green body to initiate explosion cracks, and fusing interlayer stress cracks and devitrification cracks to form a multi-stage composite crack network; iron ions in the ground glaze and copper ions in the cover glaze form ion gradient migration through the iron axe stone powder in the middle layer to generate red and green blended stripes; the microcapsule carbon powder regulates and controls the pores and texture of the glaze, and copper foil fragments are oxidized and reduced to form gilding-brown mottles.

The invention relates to the field of environmental engineering and waste recycling, in particular to a method for detecting and recycling copper ions through carbon dots, amines and acids are used as precursors, the carbon dots with fluorescence are prepared through a microwave-assisted thermal method, the prepared carbon dots are used for quantitative fluorescence sensing and flocculation recycling of II-valent copper ions, and the method for detecting and recycling the copper ions through the carbon dots is suitable for industrial production. The higher the concentration of the II-valent copper ions is, the lower the fluorescence intensity is, a standard linear relation exists between the two, in addition, the obtained carbon dots can also be combined with the II-valent copper ions to form a complex to generate flocculation and calcination to obtain copper oxide, and the II-valent copper ions in the waste are recycled; the preparation method of the carbon dots is simple and efficient, large-scale batch preparation can be achieved, the carbon dots can achieve accurate detection of the II-valent copper ions, the detection limit is extremely low, accurate separation and extraction of the II-valent copper ions can be achieved, the recovery efficiency is high, the cost is low, and practicability is high.

The invention discloses an inhibitor for copper-molybdenum separation and a preparation method and application thereof.The inhibitor is a grafted copolymer DG-1 obtained after chitosan and sodium thioglycolate are grafted, the selectivity of sulfydryl to copper ions is enhanced through the product, the adsorption effect on the copper ions is enhanced, and molybdenite is not affected; secondly, a carboxyl group of a grafted product points to ore pulp and has more active sites, so that the solubility and the stability of single chitosan or sodium thioglycolate are enhanced; a third step; the copolymer is relatively simple to prepare and easy to realize, and the economic cost for inhibiting the chalcopyrite is effectively reduced. The inhibitor is used for separating copper and molybdenum and is environmentally friendly, the dosage is relatively small, and the process is simple and efficient.

The invention discloses a waste battery positive electrode material recovery method, which comprises: mixing a waste battery positive electrode material and a sulfuric acid solution to obtain a slurry, the waste battery positive electrode material comprising at least one of Ni < 3 + >, Co < 3 + > and Mn < 3 + >; the slurry and cobalt hydroxide acid leaching residues are mixed, a first leaching reaction is carried out, so that first leaching liquid and first leaching residues are obtained, and the cobalt hydroxide acid leaching residues comprise cobalt sulfide; the first leaching solution and iron powder are mixed, a second leaching reaction is conducted, so that a second leaching solution and second leaching residues are obtained, and the first leaching solution comprises copper ions; and the second leaching solution and nickel cobalt hydroxide acid leaching residues are mixed, a third leaching reaction is carried out, so that a recovery solution and third leaching residues are obtained, and the nickel cobalt hydroxide acid leaching residues comprise at least one of MnO2, Mn3O4 and MnO (OH). The cobalt hydroxide acid leaching residues and the nickel cobalt hydroxide acid leaching residues are jointly used, so that valuable metal elements in the waste battery positive electrode material are synergistically leached, and the use of auxiliary materials is effectively reduced while the efficient metal element leaching rate is kept.

The invention relates to the field of resin synthesis, in particular to functionalized hierarchical pore adsorption chelating resin as well as a preparation method and application thereof. According to the functionalized hierarchical pore adsorption chelating resin, the particle size is 0.65-1.2 mm, the specific surface area is 550-1500 m < 2 > / g, the pore volume is 0.4-1.8 cm < 3 > / g, the proportion of micropores is 15-35%, the proportion of mesopores is 25-40%, and the proportion of macropores is 25-60%. Micropores, mesopores and macropores of the functionalized hierarchical pore adsorption chelating resin are uniformly distributed, the particle size is moderate, the specific surface area and pore volume are relatively large, and the functionalized hierarchical pore adsorption chelating resin has relatively large adsorption capacity on copper ions, nickel ions and lead ions.

The invention relates to a copper phthalocyanine covalent organic framework material with photodynamic / chemical dynamic sterilization and a preparation method and application thereof, and belongs to the technical field of advanced functional materials and biological medicines. A covalent organic framework is synthesized by taking 4, 4 ', 4', 4 ''-tetra-(4-amino) copper phthalocyanine (CuTAPc) as a main structural unit, and the distance between photosensitizers can be limited, so that the self-aggregation quenching of the photosensitizers is reduced, and a good photodynamic effect is realized. Meanwhile, the copper ions consume glutathione overexpressed in the bacterial microenvironment, consumption of active oxygen is avoided, Fenton-like reaction is further triggered, toxic active oxygen is generated, chemical power synergistic treatment is achieved, the defect that the depth of light penetrating through the tissue is limited is effectively overcome, and a good treatment effect on deep tissue is achieved. A composite antibacterial film is further constructed based on the material. The multifunctional material has good stability and active oxygen generation capability, has good biological safety, and has huge potential in the fields of bacterial infection treatment, fruit and vegetable preservation and the like.

The invention belongs to the field of nano-medicine and traditional Chinese medicine, and particularly discloses an antioxidant nano-material based on self-assembly of traditional Chinese medicine and copper ions and a preparation method thereof.The nano-material is prepared from BPCu nano-particles formed by self-assembly of berberine and procyanidine B2 under induction of the copper ions, the BPCu nano-particles are further subjected to surface modification through polyvinylpyrrolidone, and the antioxidant nano-material is prepared. And the stably dispersed PVP-coated BPCu nano structure is obtained. The material is small in particle size, uniform in distribution, good in water solubility and storage stability, excellent in free radical scavenging capacity and catalase-like activity and suitable for adjuvant therapy of oxidative stress related diseases, and the preparation method is easy and convenient to operate, does not need an organic solvent and has good industrialization and disease treatment potential.