31 results about "Copper oxide nanoparticles" patented technology

The invention discloses a method for preparing a water inlet separation net loaded with copper oxide nanoparticles and having a self-cleaning function, and particularly relates to a method for preparing the water inlet separation net with the self-cleaning function by constructing a dopamine coating on a polypropylene separation net and then loading the copper oxide nanoparticles. The preparation method comprises the following steps: introducing a dopamine solution to the surface of a polypropylene separation net to form a polydopamine coating, chelating Cu by using surface functional groups of the polydopamine coating, then forming Cu (OH) in an alkaline environment, and further converting the Cu (OH) into CuO nano-particles to be deposited on the surface of the separation net; the finally prepared functional separation net is stable in structure, has self-cleaning capability, and can effectively slow down pollution in roll-type reverse osmosis and nanofiltration membrane elements.

The invention relates to a synthesis method of novel energy-saving phosphorus-doped copper oxide, a catalyst as well as a preparation method and application of the catalyst. The synthesis method comprises the following steps: S100, obtaining copper oxide nanoparticles; s200, obtaining a black phosphorus nanosheet; s300, the copper oxide nanoparticles and the black phosphorus nanosheets are mixed and then subjected to ultrasonic treatment, and phosphorus-doped copper oxide is obtained.According to the method, the phosphorus-doped copper oxide nanoparticle catalyst can be synthesized under the mild condition, and very high methanol oxidation reaction activity and formate selectivity are achieved.

A scaffold for bone-tissue engineering includes a mesh and a coating on the mesh. The mesh includes a plurality of offset layers of filaments of polyester. The coating covers the mesh and includes magnesium hydroxide / copper oxide nanoparticles suspended in gelatin. A method of constructing the scaffold comprises combining magnesium hydroxide / copper oxide nanoparticles with a gelatin solution and coating a polyester mesh with the combined magnesium hydroxide / copper oxide nanoparticle and gelatin solution.

This invention discloses a method for online in-situ activation of persulfate to treat organic wastewater using copper oxide-loaded carbon millimeter spheres, comprising: 1) preparing copper oxide nanoparticle-loaded carbon millimeter spheres; 2) placing the prepared carbon millimeter spheres in a reaction column, starting a flow-through reaction system, and introducing organic pollutant wastewater containing persulfate for degradation reaction, thereby achieving efficient purification of organic wastewater. This invention addresses the problems of copper oxide nanomaterials, such as small size, large surface effect, strong adsorption capacity, poor stability, and easy aggregation, leading to difficulties in recovery, low treatment capacity, and low recycling rate in actual wastewater treatment. By loading copper oxide onto carbon millimeter spheres, the invention achieves the immobilization of copper oxide nanomaterials. Simultaneously, a flow-through reaction system is designed, in which the copper oxide-loaded carbon millimeter spheres are loaded into the reaction column. When persulfate flows through the millimeter spheres, a high concentration of active species is generated, and the organic matter in the mobile phase is rapidly degraded, achieving efficient purification of organic wastewater.

To provide an electrochromic material and a method for producing the same, which are used in a coating material that exhibits reversible color change between black and transparent, as well as a coating material and a mixed coating material containing the electrochromic material and methods for producing the same, a color-variable electrode, and an electrochromic device. [Solution] A black electrochromic material that reversibly changes color between black and transparent through an electrochemical redox reaction, comprising one or more nanoparticles selected from the group consisting of copper oxide nanoparticles that are heat-treated products of basic copper carbonate, titanium oxide nanoparticles, titanium nitride nanoparticles, nickel oxide nanoparticles, nickel hydroxide nanoparticles, zirconium oxide nanoparticles, and metallic iridium nanoparticles.

A multilayer Janus membrane with directional wettability includes a polyvinylidene fluoride (PVDF) layer, a polyetherimide (PEI) layer and an intermediate layer of copper oxide nanoparticles and vinylidene fluoride and hexafluoropropylene copolymer (PVDF-HFP) or polyacrylonitrile (PAN). The intermediate layer is in contact between the PVDF layer and the PEI layer, and the PEI fibers interlock between the granular particles of the intermediate layer.

This invention relates to an air-to-water system and its absorbent gel. The preparation method of the absorbent gel includes: dispersing carboxymethyl cellulose in deionized water until a transparent solution is formed; adding copper oxide nanoparticles to the transparent solution and ultrasonically dispersing them uniformly to obtain a CuO / CMC pretreatment solution; adding hydroxypropyl methylcellulose to the CuO / CMC pretreatment solution and stirring until fully swollen to form a precursor solution; adding lithium chloride to the precursor solution and stirring until fully foamed to obtain a foam gel; and finally drying the foam gel to obtain the absorbent gel. The absorbent gel of this invention has low preparation cost, can rapidly and efficiently absorb / desorb moisture, and can be assembled into an independent passive water production system, thus adapting to a wider range of applications in arid regions.

The application discloses a kind of rubidium-doped cerium oxide-copper composite catalytic materials and its preparation method and application, belong to catalytic technical field.Rubidium-doped cerium oxide-copper composite catalytic material is constituted by rubidium-doped in copper-cerium composite material surface, the copper-cerium composite material is constituted by copper oxide nanoparticles growth on cerium oxide nanorod, its preparation method is: first by hydrothermal method obtains cerium oxide nanorod, then in situ growth copper oxide nanoparticles on cerium oxide nanorod, then dope rubidium.The preparation method step is simple, low in cost, easy to realize large-scale production, and the catalytic material has the advantages, such as specificity is high, conversion rate is good, stable and long service life, etc., it is applied to catalytic aniline oxidation synthesis oxidation azo compound, and shows high catalytic activity, good selectivity, low cost, environment-friendly and the like.

The invention discloses a functional coating for the surface of an orthopedic implant material as well as a preparation method and application thereof, the coating comprises core-shell structure nanoparticles, copper oxide nanoparticles with the particle size of 200nm are taken as a core, and a compound of polydopamine and baicalein is taken as a shell. The preparation method comprises the following steps: dissolving baicalein in ethanol, dispersing copper oxide nanoparticles in water, mixing to obtain a suspension, adding dopamine hydrochloride, adjusting to alkalinity, and immersing the implant material matrix for reaction. The coating is applied to an orthopedic implant material for preventing and treating periprosthetic infection, and the core-shell structure of the coating can realize continuous release of baicalein and intelligent response release of copper ions in an acidic infection environment, so that the synergistic effect of early-stage antibacterial immune regulation and late-stage enhanced antibacterial is exerted; the compound has multiple functions of long-acting antibiosis, biofilm resistance, promotion of M2 polarization of macrophages and reduction of bone destruction.

The invention provides a catalytic composition, the catalytic composition comprising copper oxide nanoparticles, carbon black, and a binder. The invention also provides a catalyst, an electrode and an electrolyser comprising the catalytic composition. In addition, the invention provides a method of preparing a catalytic composition, the method comprising (a) providing a binder in a solvent to provide a binder mixture; (b) incorporating carbon black into the binder mixture; (c) incorporating copper oxide nanoparticles into the binder mixture; and (d) stirring the mixture to form a composite material of the binder, carbon black, and copper oxide nanoparticles. The invention also provides a method of producing hydrogen comprising contacting an aqueous electrolyte with the catalytic composition, the catalyst, or the electrode, and applying a voltage sufficient to split water into hydrogen and oxygen.

The present application relates to the technical field of high polymer antibacterial health protection materials, in particular to a preparation method of a universal copper-based nanometer material, wherein copper hydroxide precipitate is obtained by adding sodium hydroxide solution into copper chloride water solution step by step, and then copper oxide nanoparticles are obtained by drying and grinding; copper nitrate trihydrate, lithium hydroxide monohydrate and water are mixed and then hydrothermally dispersed to obtain copper hydroxide nanowires; copper chloride dihydrate, lithium hydroxide monohydrate and water are mixed to obtain copper oxide nanosheet; finally, copper oxide nanoparticles, copper hydroxide nanowires and copper oxide nanosheet are dispersed and mixed to obtain a copper-based nanometer compound. The present application is a new type of copper-based nanometer antibacterial material with regular prism / rod microstructure, high dispersibility, strong base material compatibility, high temperature resistance and excellent durability. The material can be truly embedded in different base materials instead of only staying on the surface, and can be universally applied in various material systems such as silica gel, latex and yarn.

Black IR-reflective or transmissive pigments from which LiDAR-responsive black coatings can be formed, wherein the pigments exhibit similar blackness M to non-IR-reflective carbon black y Values. The CuO particles exhibit small crystallites with a (−111) / (111) reflection intensity ratio of less than 18 nm and less than 1.2. The method of forming the CuO particles includes precipitating CuCO3 or CuCO3 / Cu(OH)2 using an alkaline carbonate as a precipitant and calcining the precipitate at about 300 °C to about 400 °C.

The invention provides an enzyme-free glucose biosensor, a preparation method thereof and application of the enzyme-free glucose biosensor in intelligent wearable electronic equipment. The non-enzyme glucose biosensor comprises a flexible material layer, a sensor layer and a perfluorosulfonic polymer layer which are sequentially stacked. The sensor layer comprises a metal sensing material substrate layer and a three-electrode modification layer which is arranged on the outer surface, far away from the perfluorosulfonic polymer layer, of the substrate layer; the three-electrode modification layer comprises a working electrode modification layer, a counter electrode modification layer and a reference electrode modification layer, and materials of the working electrode modification layer comprise copper oxide nanoparticles, calcium titanate nanoparticles and a perfluorosulfonic acid polymer. The glucose biosensor does not need the participation of glucose oxidase, is not easily influenced by external environmental factors, and can improve the stability of the device and the test sensitivity.

The invention relates to the technical field of functional ceramics, and mainly relates to a high-strength silicon carbide ceramic material and a preparation method thereof. The preparation method of the high-strength silicon carbide ceramic material comprises the following steps: treating carbon fibers by adopting oxygen plasma to obtain modified carbon fibers; preparing a gold-loaded mixture by using boron carbide powder, silicon powder, a chloroauric acid solution and a sodium borohydride solution; and mixing and sintering the silicon carbide powder, the modified carbon fiber, the gold-loaded mixture, copper oxide nanoparticles and aluminum phosphate to obtain the high-strength silicon carbide ceramic material. The high-strength silicon carbide ceramic material provided by the invention can have high-level mechanical properties, high-temperature anti-oxidation effect and certain self-repairability.

The invention relates to a synthesis method and a synthesis processing system of quinclorac oxadiazon, and belongs to the technical field of pesticide synthesizing.The synthesis method comprises the steps that firstly, through mediation of a silane coupling agent, nanometer copper oxide particles are evenly loaded in mesopores of an adsorption type molecular sieve, and then the adsorption type molecular sieve, 3, 7-dichloro-8-quinolinecarboxylic acid and N, N-dimethylformamide are mixed to form the quinclorac oxadiazon. According to the present invention, substances such as N, N-dimethylformamide and the like are subjected to acyl chloride, esterification and transposition rearrangement reactions, the copper oxide nanoparticles in the adsorption type molecular sieve and N, N-dimethylformamide achieve the synergistic effect, and can form the active intermediate with thionyl chloride, such that the activation energy of the acylating chlorination reaction is reduced, and the acylating chlorination reaction time is shortened; the mesoporous structure of the MCM-41 molecular sieve can adsorb hydrogen chloride gas generated in the acylating chlorination reaction in situ through Van der Waals' force and capillary coagulation, the conversion rate of the acylating chlorination reaction is improved, and the in-situ removal of hydrogen chloride can also reduce the use amount of an acid-binding agent triethylamine in the subsequent esterification reaction, so that the generation of triethylamine hydrochloride by-products is reduced, and the material loss is reduced.

The present application belongs to the technical field of functional materials, and particularly relates to a coated carbon nanotube composite material and a preparation method thereof, and a functional polymer composite material and a preparation method thereof. The coated carbon nanotube composite material provided by the present application has a core-shell-shell structure coated in turn from inside to outside, wherein the carbon nanotube constitutes an inner core providing mechanical enhancement and an electrically conductive path, a silver layer coated on the surface of the carbon nanotube serves as an intermediate layer and a first antibacterial component, a copper oxide nanoparticle layer coated on the surface of the silver layer serves as an outer shell layer and a second antibacterial component, and the copper oxide layer and the silver layer form a heterojunction. The specific structure produces a synergistic effect of silver, copper oxide and carbon nanotube, so that the composite powder has the functions of high-efficiency antibiosis, antistatic and mechanical enhancement.

A system for the synthesis and characterization of luminescent copper oxide nanoparticles, comprising: a) an extract preparation plant configured to produce an extract from white garland leaves by boiling cut leaves in double distilled water and subsequently filtering the mixture; b) a synthesis unit configured to mix a copper sulfate solution with the extract from white garland leaves and to obtain a black colored solid under stirring conditions; c) a centrifuge configured to separate the black-colored solid from the mixture; d) a combustion unit configured to subject the separated solid to heat treatment in a muffle furnace to obtain copper oxide nanoparticles; e) a characterization unit for the analysis of the copper oxide nanoparticles, wherein the characterization unit includes: UV-Vis spectrophotometer, X-ray diffractometer, photoluminescence spectrometer, etc. f) a photocatalytic degradation unit configured to enable the complete removal of industrial dyes (methylene blue) and g) an antimicrobial test unit for evaluating the antibacterial and antifungal activity of the copper oxide nanoparticles.

A kit, detection method, and application for detecting oligomeric single-stranded nucleic acids are disclosed. The kit is constructed based on a signal amplification strategy using a copper ion-responsive cyanine dye probe F-0 and copper oxide nanoparticles. MNPs are coupled with biotin-modified oligo1 to obtain MNPs@oligo1; disulfide-modified oligo2 is coupled with copper oxide nanoparticles to obtain CuO@oligo2. In the presence of the target nucleic acid, complementary hybridization occurs with both to form a three-dimensional sandwich structure of MNPs-target sequence-CuO. After magnetic separation and acid hydrolysis, CuO is released. 2+ The reagent is specifically recognized by the cyanine dye probe F-0 and generates a spectral response, enabling rapid detection of target nucleic acids. Using miRNA as a model, the detection limit can reach 1.5 fM. This kit is easy to use, highly sensitive, and has good specificity, making it suitable for the detection of various oligomeric single-stranded nucleic acids, including miRNAs, nucleic acid aptamers, and antisense oligonucleotides.

The application provides a method for preparing a graphene material in situ combined with copper oxide nanoparticles by laser induction and application thereof. First, a copper acetate solution is used to infiltrate softwood shallow cell wall tissue, and then ascorbic acid is used to reduce the softwood in situ, and small-size copper particles are uniformly embedded in the softwood after low-temperature vacuum drying, so that the uniformity and simplicity of modification are realized. Laser irradiation of the copper-containing softwood can prepare chain-bead-shaped graphene / copper oxide composite nanomaterials. The material itself has a three-dimensional wire mesh structure and has rich field emission tips; in addition, the heterojunction formed in situ by the copper oxide particles and the graphene has excellent electron transport characteristics, so that the copper oxide serves as an emission site and further improves the field emission performance.

The application discloses a functionalized multi-walled carbon nanotube-copper oxide composite nanofluid phase change cold storage material and a preparation method thereof. The composite nanofluid phase change cold storage material is composed of 99.8-99.9 wt.% base liquid, 0.05-0.15 wt.% nanometer additive and 0.02-0.1 wt.% surfactant. The base liquid is pure water. The nanometer additive is composed of carboxylated multi-walled carbon nanotubes and copper oxide nanoparticles, and the mass ratio of the carboxylated multi-walled carbon nanotubes to the copper oxide nanoparticles is 2-8:2-8. The surfactant is gum arabic (GA), sodium dodecyl benzene sulfonate (SDBS), cetyltrimethylammonium bromide (CTAB) or polyvinylpyrrolidone (PVP). The application solves the technical problems of poor dispersion stability in long-term circulation, incapability of simultaneously achieving efficient heat conduction enhancement and low supercooling degree and excessive loss of energy storage density of the existing water-based nanofluid cold storage material.

A black IR reflective or transmissive pigment from which LiDAR responsive black coatings can be formed where the pigment displays a Blackness My value similar to non-IR reflective carbon black. The CuO particles display small crystallites of less than 18 nm and an (−111) / (111) reflectance intensity ratio of less than 1.2. A method of forming the CuO particles includes precipitation of CuCO3 or CuCO3 / Cu(OH)2 using an alkali carbonate as a precipitant and calcining the precipitate at about 300° C. to about 400° C.

The study is concerned with synthesizing copper oxide nanoparticles with leaf extract Vitex Agnus-Castus (VAC). The leaf extract VAC is a reduction agent for the synthesis of the nanoparticles. The leaf extract was prepared and then processed in the precipitation using copper salt solutions. The results of scanning electron microscopy (SEM) and dynamic light scattering (DLS) revealed that the green synthesized copper oxide nanoparticles (CuO NPs) are spherical in shape and have a mean particle size of 22 nm. The XRD graph showed the crystalline and monoclinic phases of CuO NPs. The adsorption characteristics of the nano-adsorbents were investigated using Rhodamine B (RhB) as a target model. Box-Behnken design (BBD) in response surface methodology (RSM) was used to optimize various process parameters, such as pH solution (A: 3-11), adsorbing dose (B: 0.2-2 g.L-1), Concentration dye (C: 20-80mg.L-1). A second-order polynomial equation was used to calculate the experimental results. In conclusion, we have illustrated an effective and environmentally friendly nano-adsorbent for removing pollutants from waters, which will also be attractive for multifunction applications. Keywords: Green synthesis, CuO, Nanoparticles, Removal dye, Rhodamine blue. BBD, RSM

A copper oxide with a hollow porous structure, a preparation method therefor, and a use thereof are provided. The copper oxide with a hollow porous structure is of a hollow octahedral structure, and has a size of 200-400 nm and a specific surface area of 23.5-79.6 m2 / g, where the surface of the octahedron is composed of copper oxide nanoparticles having a size of 14-33 nm, and pore structures are formed among the copper oxide nanoparticles. The copper oxide with the hollow porous structure has good conductivity, high hydrophilicity and good catalytic performance, can substantially reduce the detection potential and greatly improve the detection sensitivity and the anti-interference performance when used for the electrochemical detection of pesticides.

The present invention relates to a hybrid structure for sensors comprising copper oxide nanoparticles, a conductive film layer made of stainless steel, and a flexible polymeric substrate. In addition, the invention also discloses a technological process for manufacturing said hybrid structure, which, owing to the specific properties of copper(II) oxide nanoparticles, may be used as the functional and / or sensing part of an electrochemical sensor for applications in a range of industries, including, but not limited to, the medical, food and agricultural sectors.

The invention discloses an organic silicon antibacterial material based on photocatalytic nanoparticles, the antibacterial material is a nitrogen-doped titanium dioxide-copper oxide / organic silicon composite system, and the antibacterial material comprises nitrogen-doped titanium dioxide nanoparticles, copper oxide nanoparticles and an organic silicon matrix; the nitrogen-doped titanium dioxide nanoparticles, the copper oxide nanoparticles and the organic silicon substrate form a heterojunction structure, and the heterojunction structure expands a light absorption edge from about 400 nanometers of traditional titanium dioxide to 500 nanometers. Compared with the prior art, the organic silicon antibacterial material based on the photocatalytic nanoparticles and the preparation method thereof have the advantages that the organic silicon antibacterial material is convenient to operate and use, ensures the antibacterial performance and is easy to popularize and operate.

The application belongs to the field of membrane catalysis and separation technology, and particularly relates to a Cu(I)-MOF mixed matrix membrane, a preparation method, a photocatalysis-separation integrated device using the same and application. The mixed matrix membrane is prepared by mixing Cu(I)-MOF and a PEGBEM-POEM copolymer solution according to a specific mass ratio to obtain a casting solution, and then performing blade casting and drying; wherein the Cu(I)-MOF is synthesized from Hdmtz, Hdetz and copper oxide nanoparticles. The integrated device comprises a reactor shell provided with multiple parallel baffle assemblies, the mixed matrix membrane is fixed in the baffle assemblies, the internal space is divided into reaction-separation units in series, and a light source is arranged. After humid CO2 is introduced into the device, a photocatalytic reduction reaction occurs on the surface of the membrane under light to generate CO, and the high selectivity of the membrane to CO is used to realize in-situ separation and multi-stage purification of CO and O2. The application realizes efficient conversion and separation of CO2 into high-purity CO.

The application discloses a method for preparing micro-nano copper oxide powder by a microwave method and application thereof, and comprises the following steps: a) preparing a copper ion solution; b) adding a dispersing agent and a surfactant; c) adding urea; d) microwave heating reaction; e) product separation and purification; and f) drying and calcination. The application utilizes the rapid heating characteristics of microwave radiation, combines the action of urea, adds a dispersing agent such as polyvinylpyrrolidone (PVP) and a surfactant in the copper ion solution, and prepares copper oxide nanoparticles with a particle size distribution of 50-100 nanometers and even controllable micron level, and the copper oxide nanoparticles have good crystal structure and dispersibility; and the method has the advantages of simple process, fast reaction speed and low energy consumption, and the obtained copper oxide nanoparticles can be used for preparing high-performance and high-purity copper oxide nanomaterials, and have wide application prospects.

The invention provides a copper-based catalyst, a preparation method thereof and a method for preparing ethylene through electrocatalytic reduction of carbon dioxide, and belongs to the technical field of energy material preparation. The preparation method of the copper-based catalyst comprises the following steps: dispersing copper hydroxide in an alkaline earth metal inorganic salt solution for hydrothermal reaction to form copper oxide nanoparticles; mixing the copper oxide nanoparticles, an alcohol solvent and a binder in water to prepare a mixed slurry, coating the hydrophobic breathable film with the mixed slurry, and drying to obtain an initial electrode loaded with the copper oxide nanoparticles; and taking the initial electrode as a cathode, assembling the cathode and the anode in an electrolytic tank, introducing an alkaline electrolyte into the cathode, carrying out a constant-current reduction reaction to obtain the copper-based catalyst with a nano-pore structure, and fixing the copper-based catalyst on a hydrophobic gas-permeable membrane through a binder.

The invention belongs to the technical field of membrane catalysis and separation, and particularly relates to a Cu (I)-MOF mixed matrix membrane, a preparation method, a photocatalysis-separation integrated device using the Cu (I)-MOF mixed matrix membrane and application of the Cu (I)-MOF mixed matrix membrane. The preparation method comprises the following steps: mixing Cu (I)-MOF and a PEGBEM-POEM copolymer solution according to a specific mass ratio to prepare a membrane casting solution, scraping the membrane, and drying to obtain the mixed matrix membrane. Wherein the Cu (I)-MOF is synthesized from Hdmtz, Hdetz and copper oxide nano particles. The integrated device comprises a reactor shell provided with a plurality of layers of parallel partition plate assemblies, the mixed matrix membrane is fixed in the partition plate assemblies, the internal space is divided into reaction-separation units which are connected in series, and a light source is arranged. After wet CO2 is introduced into the device, a photocatalytic reduction reaction is carried out on the surface of the membrane under illumination to generate CO, and in-situ separation and multi-stage purification of CO and O2 are realized by utilizing the high selectivity of the membrane to CO. According to the invention, high-efficiency conversion and separation from CO2 to high-purity CO are realized.

The invention provides a high-conductivity colored copper wire and a preparation method thereof, and belongs to the technical field of copper wire surface engineering. The preparation method of the high-conductivity colored copper wire provided by the invention comprises the following steps: carrying out heat treatment on the copper wire to obtain the high-conductivity colored copper wire; the temperature of the heat treatment is 100-500 DEG C; and the linear speed of the copper wire during heat treatment is 1-10m / min. The copper wire is subjected to heat treatment, the surface of the copper wire can present various colors such as silver, golden yellow and dark red by controlling the heat treatment temperature and the linear speed of the copper wire, a uniform oxide layer can be formed on the surface of the copper wire, copper oxide nanoparticles are arranged on the surface of the copper wire, a film layer is compact and smooth, and the surface of the copper wire is uniform. The copper wire is prevented from being exposed in air to be further oxidized to a certain extent, and the copper oxide nanoparticles have a quantum size effect, so that the conductivity of the copper wire is improved.