12 results about "Copper monosulfide" patented technology

The invention discloses a tellurium-doped copper sulfide-based nano composite material with a core-shell structure as well as a preparation method and application thereof, and belongs to the technical field of zinc ion battery negative electrode materials. The method comprises the following steps: dissolving a copper source, a sulfur source, a carbon source and a tellurium source in a mixed solution of deionized water and ethylene glycol, uniformly stirring and mixing, carrying out hydrothermal reaction and centrifugal cleaning, collecting a precipitation product, and carrying out vacuum drying; and carrying out calcination reaction to obtain the tellurium-doped copper sulfide-based nano composite material with the core-shell structure. The inner-layer microspheres are microspheres formed by stacking tellurium-doped copper sulfide flower-shaped nanosheets; and the outer coating layer is a carbon layer. Through the synergistic effect of tellurium doping and carbon coating, the electron conduction and the structural stability of the material are effectively enhanced, and the cycle performance and the rate capability of the aqueous zinc ion battery are remarkably improved. As a negative electrode of the zinc ion battery, the material can effectively improve cyclic reversibility, has remarkable reversible capacity, improves the performance of the zinc ion battery, and is suitable for industrial production and large-scale energy storage.

The application discloses a preparation method of a fabric with light-absorbing, heat-generating and antistatic composite functions. CuS nanoparticles are dispersed in a dispersion liquid, and tetraethyl orthosilicate is slowly added dropwise. After continuous stirring reaction, the reaction precipitate is dried to obtain silica-coated copper sulfide nanoparticles. The dispersion liquid is a mixed solution of ethanol, water and ammonia water. The silica-coated copper sulfide nanoparticles, disperse dye, crosslinking agent, surfactant, dispersant and deionized water are stirred and mixed, and ultrasonic dispersion is carried out. Then, the adhesive is added and stirred uniformly. Grinding particles are added to the mixed solution for grinding, and the grinding particles are removed through sieving to obtain a finishing liquid. The pretreated polyester fabric is pad-dyed in the finishing liquid, and is dried and solidified. Finally, the fabric product is obtained through washing and drying. The silica-coated copper sulfide nanoparticles realize the combination of light-absorbing, heat-generating, warm-keeping and static elimination functions, and the production cost is low, and the process is simple.

The object of the present invention is to provide a secondary battery that uses zinc as the negative electrode and copper(II) sulfide as the positive electrode, and has charge-discharge characteristics that enable high-capacity discharge at high potential using an alkaline electrolyte. [Solution] A secondary battery comprising a current collector containing copper, a positive electrode having a positive electrode active material layer, a gel electrolyte holding an alkaline aqueous solution, and a negative electrode having a negative electrode active material layer, wherein the positive electrode active material in the positive electrode active material layer is copper(II) sulfide, and the negative electrode active material in the negative electrode active material layer contains zinc.

The application relates to a preparation method of an antibacterial hydrogel with enhanced antioxidation activity and NIR / pH dual responsiveness, and the preparation method is as follows: hollow copper sulfide nanoparticles are first prepared, the hollow copper sulfide nanoparticles are dispersed into a chitosan solution to obtain a chitosan solution containing the hollow copper sulfide nanoparticles, then a crosslinking agent epigallocatechin gallate (EGCG) solution and a 3-formylphenylboronic acid solution (3-FPBA) are sequentially added for crosslinking, so as to obtain the antibacterial hydrogel with enhanced antioxidation activity and NIR / pH dual responsiveness. The hydrogel is used for wound dressings in biomedical engineering materials. The preparation method is simple, the preparation process is green and safe, higher solid-like performance is exhibited, meanwhile, excellent injectability is maintained, and the hydrogel can play a greater advantage in the healing process of bacterial wound infection.

The application discloses a hydrophobic temperature-sensitive mesoporous silica drug delivery system and a preparation method and application thereof, and the drug delivery system takes copper sulfide nanoparticles as a core, takes amino-modified hydrophobic mesoporous silica as a shell, and is coated with a surface coating of a temperature-sensitive polymer PEG-p(AAm-co-AN), wherein the hydrophobic mesoporous silica is prepared from silane coupling agent A151 containing a carbon-carbon double bond and a silicon source TEOS; the drug delivery system has photothermal effect and upper critical solution temperature responsiveness, can load a large amount of hydrophobic drugs such as beta-elemene, and can realize controllable release under 980nm near-infrared light irradiation. The phase transition temperature of the delivery system is 43 DEG C, so that the combination of photothermal therapy and chemotherapy can be realized while the drug release is controlled, so as to achieve more effective tumor inhibition. In addition, the preparation method is simple and has wide application prospect.

The embodiment of the invention provides a preparation method of sulfuration-corrosion-resistant nano copper sulfide coated ZrN ceramic. The preparation method comprises the following steps: providing nano copper powder, ZrN powder and high-purity carbon powder; filling sulfur oxide gas into the nano copper powder; respectively adding the ZrN powder and the high-purity carbon powder into the nano copper powder, and carrying out argon-filled ball-milling powder mixing and vacuumizing to obtain mixed powder; and carrying out vacuum pressure sintering on the mixed powder, and cooling to obtain the nano copper sulfide coated ZrN ceramic. The process for preparing the nano copper sulphide coated ZrN ceramic is simple, and the production cost per kilogram is only 45-56% of that of a stellite alloy, so that the production cost can be remarkably saved. The prepared nano copper sulfide coated ZrN ceramic is compact in structure, excellent in sulfuration corrosion resistance and obviously high in cost performance, and it is possible to replace currently-used expensive Stelforce alloy.

The application discloses a kind of composite hydrogel for wound repair and its preparation method and application, belong to medical material technical field.Methyl methacrylated gelatin, hydroxyethyl methacrylate and oxidized dextran are mixed, copper sulfide nanoparticles, crosslinking agent and photoinitiator are added, stirred uniformly and placed in mold, and UV irradiation is used.Aldehyde group on ODex chain and amino group on GelMA chain occur Schiff base reaction, form dynamic covalent bond, constitute reversible crosslinking point, copolymerization reaction occurs between HEMA and methacryloyl on GelMA molecular chain, and stable covalent crosslinking network is formed.In this process, CuS NPs are effectively captured and stably dispersed in the network by physical action, and the crosslinked hydrogel is soaked in deionized water to balance, to obtain the target composite hydrogel.The composite hydrogel has excellent mechanical strength, pH-responsive swelling performance and biocompatibility, and can realize efficient antibacterial and endogenous immune regulation by combining near-infrared photothermal therapy, effectively promoting wound repair.

The invention belongs to the field of pharmaceutical preparations, and discloses a brain glioma targeted multifunctional nano-enzyme and a preparation method thereof.The multifunctional nano-enzyme is prepared by the steps that copper sulfide nanoparticles wrapped by polydopamine serve as an inner core, folic acid and glucose oxidase are modified to the surfaces of the nanoparticles to form nano-enzyme, and then the nano-enzyme is prepared into the brain glioma targeted multifunctional nano-enzyme. Lactoferrin is further modified on the surface of the nano-enzyme through electrostatic adsorption, and the brain glioma targeted multifunctional nano-enzyme is constructed.

The application discloses a preparation of a composite electrode and application of the composite electrode in treatment of wastewater by coupling dielectric barrier plasma discharge, and is characterized in that: a conductive carbon cloth is used as a substrate, a non-metallic compound g-C3N4 and a metallic compound CuS are in-situ loaded on the carbon cloth by a high-temperature calcination method and a hydrothermal method, and silver nanoparticles are doped in a precursor electrode by a soaking-reduction method, so that the photoelectric response performance of the composite electrode is improved; the prepared composite electrode is used as a reaction electrode and is placed in a reaction container, wastewater to be treated is immersed in the composite electrode, then the reaction container containing the composite electrode and the wastewater to be treated is placed in a dielectric barrier discharge area of a dielectric barrier discharge reactor, a discharge voltage is adjusted, and reaction is carried out. The prepared composite electrode is combined with the dielectric barrier plasma, and the silver-doped non-metallic compound / metallic compound has good adaptability and degradation effect on sterilization of bacteria and degradation of antibiotics in the plasma discharge system.

The invention discloses a near-infrared response copper sulfide nano-composite as well as a preparation method and application thereof, and belongs to the technical field of nano-drugs. The invention relates to a near-infrared response copper sulfide nano composite, which comprises CuS nano particles, 2 ', 2'-difluorodeoxycytidine (GEM), polyethyleneimine (PEI) and folic acid (FA), cuS nanoparticles are used as a carrier, 2 ', 2'-difluorodeoxycytidine (GEM) is carried on the CuS nanoparticles to form a structural main body, polyethyleneimine (PEI) is used for modifying the structural main body, and folic acid (FA) is used as a tumor cell targeting agent and is modified on the surface of the structural main body. The nano compound integrates chemotherapy / PTT / CDT and a copper death effect, so that multi-mode combined anti-tumor treatment is realized, and an innovative solution is provided for anti-tumor treatment.

The invention relates to a high-added-value recovery method for copper in black powder lithium-rich copper-containing pickle liquor of a decommissioned lithium iron phosphate battery, and belongs to the technical field of lithium ion batteries and solid waste resource utilization. The lithium-rich copper-containing pickle liquor is subjected to targeted sulfuration and separation treatment to obtain acidic sulfuration slag and lithium-rich pickle liquor, the acidic sulfuration slag is subjected to water washing treatment to obtain sulfuration slag and dilute acid liquor, and the sulfuration slag is subjected to desulfurization treatment to obtain nano copper sulfide and a sulfur-containing solution. The method is simple to operate, high in lithium recovery rate, high in additional value of copper byproducts, high in overall economic value and suitable for black powder pickle liquor of various retired lithium iron phosphate batteries.

The invention discloses a functional material for promoting healing of diabetic wounds as well as a preparation method and application of the functional material, and belongs to the technical field of biomedical materials. The functional material is a copper sulfide-polyethyleneimine nano composite material (CuS-PEI). The preparation method of the CuS-PEI nano composite material comprises the following steps: firstly, preparing copper sulfide nano particles, and then carrying out surface modification on the copper sulfide nano particles by using polyethyleneimine to obtain the CuS-PEI nano composite material. The invention is mainly applied to preparation of diabetes wound treatment drugs or dressings. Under the irradiation of near-infrared second-area light, the material generates a photothermal effect to realize physical sterilization; meanwhile, under double stimulation of photo-thermal and acidic microenvironments, the material can controllably degrade and release copper ions (Cu < 2 + >) and hydrogen sulfide (H2S). Released Cu < 2 + > plays a chemical bacteriostatic role, and H2S is used for inhibiting inflammation and promoting tissue regeneration. According to the invention, photo-thermal antibacterial, ion bacteriostasis, anti-inflammatory and regeneration promotion functions are integrated, and an efficient and safe new strategy is provided for treatment of diabetic refractory wounds.