127 results about "Copper doping" patented technology

The invention relates to the field of titanium dioxide photocatalysis, in particular to researches in application of a titanium dioxide nanotube modified through metal doping to the field of photocatalysis. The invention provides a simple and feasible preparation method of a copper-doped TiO2 nanotube catalyst. According to the preparation method provided by the invention, low-concentration copper is effectively doped into a titanium dioxide nanotube array through adoption of a constant-voltage electrodeposition method; and the copper inside the titanium dioxide nanotube exists in the form of copper oxide; the copper-doped TiO2 nanotube catalyst has a good photocatalytic activity under ultraviolet light and sunlight; and the composition of electron hole pairs contained in titanium dioxide is effectively inhibited through copper doping, and therefore the photocatalytic property of the titanium dioxide nanotube is enhanced. The preparation method of the photocatalyst is a constant-voltage electrochemical deposition method, in which copper sulfate is taken as electrolyte, and a preparation process is simple; and in addition, the prepared copperdoped TiO2 nanotube catalyst has a stable property and can be used repeatedly.

The invention relates to a copper-doped all-inorganic halogen perovskite fluorescent material and a preparation method and application thereof. The material has structural formula CsPb1-xCuxBr3, wherein X is in the range of 0-1; the material is a light yellow or yellow powder, and in cubic phase, and has a space group as below. The method is as below: dissolving in an organic solvent at high temperature for further reaction, washing with a hexane or toluene solvent by multiple times, purifying to obtain the copper-doped all-inorganic halogen perovskite fluorescent material with size of 10-30nm. By measuring of the UV visible (wavelength range of 350-700nm) and fluorescence spectra (excitation wavelength is 360nm with), with the increase of doping amount of copper, the absorption wavelength and corresponding fluorescence emission wavelength show the red shift phenomenon, at the same time, the fluorescence quantum yield also changes. The preparation method of the invention is simple, green and environment-friendly, and has good application potential in the preparation of LED.

The invention discloses a copper doped composite magnetic nano-material and preparation and an application of the copper doped composite magnetic nano-material, and belongs to the fields of magnetic particle synthesis and water treatment research. Aiming at a solvent thermal synthesis process of magnetic nanoparticles, according to the invention, copper chloride and ferric chloride are taken as metal salt precursors, based on solvent thermal reaction, and through copper doping ratio adjustment, the obtained mesoporous Cu-Fe3O4 microspheres have controllable particle size (560nm-120nm), specific surface area (40-100m2 g-1) and surface charge amount, and have the characteristics of high monodispersity, uniform size, high magnetic property (130-65emu g-1) and the like, and show excellent adsorption and regenerative adsorption properties for pentavalent arsenic and trivalent arsenic in a water body. The mesoporous Cu-Fe3O4 microspheres are simple in preparation process, low in cost and high in arsenic adsorption property, can be quickly magnetically separated, and has a good application prospect.

The invention belongs to the technical field of preparation of optoelectronic materials and particularly relates to a copper-doped red-light perovskite quantum dot and a preparation method thereof. According to the method, a cesium salt or a formamidine salt, copper acetate, lead bromide and lead iodide are adopted as raw materials, organic acids and organic amine are adopted as ligands, and the stable and efficient copper-doped red-light perovskite quantum dot processable in solutions are rapidly synthesized through a thermal injection method. The stability of the red-light perovskite quantumdot is greatly improved through copper doping, and meanwhile, it is ensured that the high-fluorescence quantum efficiency of the quantum dot approaches 90%. According to the quantum dot, the absorption wavelength is increased along with the increase of the doping amount of copper, and a blue shift phenomenon of corresponding fluorescence emission wavelength of the quantum dot occurs. Obtained red-light perovskite quantum dot powder has high stability and can still be stored for more than 15 days under the condition that the air humidity is higher than 85%. The preparation method is simple andenvironmentally friendly, and the obtained red-light perovskite quantum dot can be applied to photoelectric devices such as light-emitting diodes, photoelectric detectors, laser devices and solar cells.

The invention discloses a method for preparing an efficient copper-doped MoS2 nano-sheet array electrocatalyst. The preparing method includes the steps that a 2,300-mesh stainless wire mesh serves as a substrate material, Mo7O24.6 (NH4).4(H2O) and CH4N2S serve as raw materials, and a material is synthesized at the certain synthesis temperature and the certain synthesis time in a water phase system; the efficient electrocatalytic activity of the obtained MoS2 nano-sheet array material is further obtained by doping copper. By means of the method, the product is environmentally friendly, can be prepared in a large-scale mode and has the efficient water electrocatalytic decomposition hydrogen generation performance.

The invention discloses a preparation method of a photoelectrochemical diethylstilbestrol sensor and belongs to the technical field of novel nano functional materials and biosensors. Firstly, a novel two-dimensional nano photoelectric material, namely a copper-doped nano photoelectric material, specifically a two-dimensional nano composite Cu-TiO2 / MoS2 obtained through in-situ compounding of molybdenum disulfide on a copper-doped titanium dioxide nano cube is prepared, and an diethylstilbestrol antibody is loaded and alkaline phosphatase is fixed to the material by the application of good biocompatibility and a large specific surface area of the material. During detection, due to the fact that alkaline phosphatase can catalyze L-ascorbic acid-2-trisodium phosphate AAP to generate L-ascorbic acid AA in situ and then provide an electron donor for photoelectric detection, by the application of the influences of specific quantitative combination of the antibody and an antigen on electron transmission capacity, the photoelectric current intensity is lowered accordingly, and finally the photoelectric sensor for detecting diethylstilbestrol through an unmarked photoelectrochemical method is constructed.

The invention discloses a preparation method of a copper-doped coated electrode for treating printing and dyeing wastewater, prepares a copper-doped titanium-base tin antimony oxide coated electrode, and belongs to the technical field of water treatment with electro-catalysis. The technology process of the preparation method comprises the following steps: preparing a tin antimony manganese interlayer coating solution; uniformly smearing the solution on a titanium plate with the surface of the titanium plate treated, carrying out air blast drying, and calcining the dried titanium plate at the temperature of 450-550 DEG C for 1-3 hours; uniformly smearing a copper-doped tin antimony active layer coating solution on the surface of the calcined titanium plate, carrying out air blast drying, calcining the dried titanium plate at the temperature of 450-550 DEG C for 1-3 hours; repeating the last step once. The preparation method is simple in technology and good in controllability; the active layer adopts common copper doping, so that the solvent toxicity and production cost are greatly reduced; the prepared electrode is relatively high in oxygen evolution potential and relatively large in capacitance, and can effectively and thoroughly treat printing and dyeing wastewater.

The invention discloses a zinc oxide porous film doped with a copper oxide and a preparation method thereof. More than one layer of zinc oxide porous film doped with the copper oxide is coated on a substrate; the atomic percent of the copper oxide to zinc oxide in the porous film is (0.1-95at%): (5-99.9at%); the film thickness is 20-4,000nm; and the diameter of a bowl hole is 50-5,000nm. The method comprises the following steps: mixing a copper nitrate solution with a zinc nitrate solution to obtain a metal oxide precursor liquid according to the concentration ratio of copper ions to zinc ions being (0.1-95):(5-99.9); firstly, immersing a single-layer colloid crystal template into the metal oxide precursor liquid; fishing up single-layer colloid crystal by using a substrate after the single-layer colloid crystal template is separated from a base, so as to obtain the substrate which is coated with the single-layer colloid crystal and dipped with the precursor liquid; annealing after drying, so as to obtain the substrate which is coated with the zinc oxide porous film doped with the copper oxide in a bowl hole shape at the surface; and repeating the film-forming process once or more, so as to prepare the target product. Thus, the zinc oxide porous film doped with the copper oxide can be widely applied to detection of a hydrogen sulfide gas.

In certain example embodiments, a coated article includes a copper-doped zirconium based layer before heat treatment (HT). The coated article is heat treated sufficiently to cause the copper-doped zirconium oxide and / or nitride based layer to result in a copper-doped zirconium oxide based layer that is scratch resistant and / or chemically durable. The doping of the layer with copper has been found to improve scratch resistance.

Methods for forming a back contact on a thin film photovoltaic device are provided that include applying a conductive paste onto a surface defined by a p-type absorber layer (e.g., comprising cadmium telluride) of a p-n junction and curing the conductive paste to form a conductive coating on the surface defined by a p-type absorber layer of the p-n junction. The conductive paste can include a conductive material, a solvent system, and a binder such that during curing an acid from the conductive paste reacts to enrich the surface with tellurium while copper is deposited onto the Te enriched surface. The acid is then substantially consumed during curing.

The invention relates to a method for improving the stability of an Ni-Cu / SiO2 nanocomposite catalyst in methane dry reforming by using mesoporous silica as a carrier and nickel nanocrystal as a mainactive component through copper doping, belonging to the technical field of catalyst preparation. The nanocomposite catalyst is prepared from raw materials like nickel nitrate, sodium silicate and diluted nitric acid by a simple precipitation method through steps of aging, filtering and washing, drying, grinding and reducing; the method provided by the invention has simple preparation process, noneed of high-temperature calcination, cheap and easily available raw materials and low cost; and the catalyst prepared by using the method provided by the invention has the advantages of high catalytic activity, good stability, no significant decrease in activity after reacted under the condition of 700 DEG C for 140 hours, strong capability of resisting sintering and carbon deposition, etc. The catalyst provided by the invention is applied to a methane dry reforming reaction, and provides an effective solution channel for effective utilization of natural gas and emission reduction of CO2.

The invention relates to a lanthanum molybdate-based intermediate-temperature solid oxide fuel cell electrolyte material and a preparation method thereof. The chemical formula of electrolyte materials is La2Mo(2-x)CuxO(9-delta), wherein in the formula, x is larger than 0 and smaller than or equal to 0.6. La2O3, MoO3 and CuO are weighed and added into a mortar with absolute ethyl alcohol as a medium, and grinding is conducted; then the materials are transferred to a crucible, and the crucible with the materials are placed in a muffle furnace for calcination; the materials are taken out and fully ground after being calcined, and finally solid precursor powder is obtained; the precursor powder is taken to be placed in an agate mortar for grinding; a PVA solution is added for grinding and pelletizing; the pelletized product is added into a stainless steel tabletting die and pressed into round slices. Phase transformations of the prepared electrolyte materials are inhibited; a compact ceramic sintered body with the relative density higher than 98% can be obtained after calcination. Along with increase of the copper doping ratio, the oxygen-ion electrical conductivity shows a gradual decrease tend, and the electrolyte materials are expected to be applicable to the field of the lanthanum molybdate-based fuel cell electrolyte material.

The invention relates to a copper-doped quasi-two-dimensional full-inorganic perovskite material and a preparation method thereof. The method comprises the following steps: a) performing a heating reaction on a mixed solution of a cesium source, a solvent and a ligand I in an oxygen-free environment to obtain a precursor A; b) acquiring a mixed solution B of a copper source, a solvent and a ligandII in a non-oxidizing atmosphere under a heating condition; c) under a vacuum condition, mixing a copper source, a lead source, a solvent, the ligand I and the ligand II, carrying out a heating reaction, and adding the ligand III under a non-oxidizing atmosphere for a reaction so as to obtain a mixed solution C; and d) reacting the precursor A with the mixed solution C under a heating condition,carrying out cooling to room temperature, adding the mixed solution B, and carrying out a stirring reaction under heating to obtain the copper-doped quasi-two-dimensional purple-light full-inorganic perovskite material. According to the method, defects inside and on the surface of perovskite crystals are passivated by doping the transition metal Cu, so the short-range order degree of the crystalsis improved, and the full-inorganic perovskite material has a quasi-two-dimensional nanosheet morphology.

The invention belongs to the technical field of new energy materials, and provides a sodium vanadium phosphate electrode material of a vanadium-site copper-doped composite carbon nano tube and a preparation method and application of the sodium vanadium phosphate electrode material. The electrode material is Na<3+x>V<2-x>Cux (PO4)3@5%CNTs, wherein x is equal to 0.01, 0.04, 0.07 or 0.1. Positive bivalent copper ions replace positive trivalent vanadium ions, holes are introduced into NVP unit cells, and the electron conductivity in the material is improved. Meanwhile, an ion transmission channel is widened, the unit cell structure is stabilized, and the ionic conductivity and structural stability of the material are remarkably improved. The carbon nanotubes with high electronic conductivity are compounded to form a layer-by-layer embedded conductive frame, so that the electronic conductivity among the active particles is improved. The intrinsic conductivity and crystal structure stability of the NVP electrode material are comprehensively improved from multiple angles, and the obtained material has excellent rate capability, high rate and long cycle stability when being used as a sodium ion battery positive electrode. The preparation method is simple to operate, easy to control and considerable in yield.

The invention relates to a preparation method of a negative electrode material for a lithium-ion battery, in particular to a preparation method of a copper-doped lithium titanate negative electrode material. The preparation method comprises the following steps: sequentially adding a lithium source, a titanium source, a copper source and a chelating agent to an organic solvent for mixing, stirring and dissolving; taking out the mixture for standing after 6 hours, forming gel and drying the gel at 100 DEG C for 10 hours to obtain a precursor; and presintering the precursor in a muffle furnace at a constant temperature of 500 DEG C for 2 hours, burning the product at 800 DEG C for 10 hours, cooling the product to a room temperature and grinding the product. The copper-doped lithium titanate sample prepared by the method is fine and uniform in particle; the average particle size is 200-400nm; the degree of crystallinity is good; and the purity is high. The conductivity of lithium titanate is effectively improved by copper doping; and the electronic conductivity and the lithium-ion diffusion rate are improved, so that the rate capability is improved; and the preparation method has very great applicability to the negative electrode material for a power battery.

The invention discloses a copper doped cerium oxide photocatalyst and a preparation method thereof. The molecular formula of the copper doped cerium oxide photocatalyst is CuxCe<l-x>O<2-x>, in the formula, x is 0.05-0.2. The preparation method comprises the following steps: at the room temperature, dissolving cerous nitrate and cupric nitrate in deionized water, performing ultrasonic stirring for certain time, preparing NH4HCO3 solution or Na2CO3 solution by using deionized water, performing coprecipitation reaction for 30 minutes by using a coprecipitation method through reverse titration and by controlling the temperature to be 70-80 DEG C, after the reaction is completed, cooling to be the room temperature, performing centrifugal separation, washing, drying and calcining the obtained precipitate in sequence, thereby obtaining the copper doped cerium oxide photocatalyst with good photocatalytic performance. The needed production equipment is simple, and the industrialization production is easy to achieve.

The invention relates to a copper-based nano-catalyst as well as a preparation method and application thereof. A copper-doped metal organic framework (ZIF-8) is used as a precursor; high-temperature pyrolysis is performed in an inert atmosphere to form a transition metal copper-based nanocluster catalyst which can be directly used without subsequent treatment; the grain size is in nano-scale and uniform in size, wherein copper exists in the form of clusters, the active center is completely exposed, the catalytic performance is substantially improved, good cycle stability and good methanol tolerance are provided, and the catalyst can be well suitable for fuel cells, metal-air cells and other various novel energy catalysis systems.

The invention relates to a method for preparing copper-doped activated carbon by utilizing a chemical complexing process, and belongs to the technical fields of chemical industry and environmental protection. The method comprises the following steps of functionalizing nitrile groups of a polyacrylonitrile copolymer serving as a raw material by using hydroxylammonium chloride to obtain a product containing a great number of amino groups and hydroxyl groups, chemically complexing the product and a copper ion aqueous solution to obtain copper-doped polyacrylonitrile, and activating copper-doped polyacrylonitrile under different conditions by using potassium hydroxide as an activator to obtain the copper-doped activated copper. The method has the advantages that polyacrylonitrile is used as the raw material, and the nitrile groups of polyacrylonitrile can be effectively and conveniently functionalized; a chemical complexing method is adopted, so that the activated carbon can be efficiently and uniformly doped with copper; in addition, the method has the advantages of simplicity in an operation process, less environmental pollution and the like; compared with an activated carbon material, the copper-doped activated carbon has high specific capacitance, and can be used for a capacitor electrode material.

Methods for forming a back contact on a thin film photovoltaic device are provided that include applying a conductive paste onto a surface defined by a p-type absorber layer (e.g., comprising cadmium telluride) of a p-n junction and curing the conductive paste to form a conductive coating on the surface defined by a p-type absorber layer of the p-n junction. The conductive paste can include a conductive material, a solvent system, and a binder such that during curing an acid from the conductive paste reacts to enrich the surface with tellurium while copper is deposited onto the Te enriched surface. The acid is then substantially consumed during curing.

The invention provides a method for preparing a transparent supercapacitor with a light enhancement effect. The method comprises the following steps of reacting with foamy copper serving as a substrate of an electrode material to obtain a copper-doped nickel oxide taking a copper oxide array as a substrate to obtain an electrode material of the transparent supercapacitor with the light enhancementeffect; taking foamed nickel as a counter electrode material matrix, taking activated carbon as an active material for uniform coating to serve a counter electrode of a light enhancement effect transparent supercapacitor, taking a sodium ion battery diaphragm as a super capacitor diaphragm, taking a potassium hydroxide solution as a super capacitor electrode solution, stacking the electrode material, an insulating diaphragm and the counter electrode and then putting the electrode material, the insulating diaphragm and the counter electrode into a transparent packaging material, injecting a proper amount of electrolyte and then packaging to obtain and the transparent super capacitor with the light enhancement effect. The supercapacitor with a transparent device is prepared by adopting a super capacitor electrode material with photoresponse, so that the specific capacitance of the supercapacitor is improved and the cycling stability of the supercapacitor is enhanced under the irradiation of sunlight.

The invention relates to a hydrothermal preparation method of a copper-doped zinc oxide composite lithium ferro phosphate (LFP) positive electrode material. The method comprises the following steps: firstly, respectively preparing a lithium phosphate colloidal solution and a copper-doped zinc oxide precursor solution, then mixing the lithium phosphate colloidal solution and the copper-doped zinc oxide precursor solution, uniformly stirring, adding a ferrous solution to form an LFP precursor solution, and transferring to a reaction kettle, wherein the reaction temperature is 100-350 DEG C, andthe reaction time is 3-30 hours; naturally cooling the sample, taking out, washing with a great amount of deionized water, drying at 80 DEG C so as to obtain the copper-doped zinc oxide composite LFPposition electrode material. The method comprises: performing the chemical reaction in the water solution or water vapor and the fluids at high temperature and high pressure so as to prepare the copper-doped zinc oxide composite LFP position electrode material. Compared with the method of producing LFP by virtue of a solid phase method, the hydrothermal preparation method has the advantages of simplicity in operation, uniform product phase, small product particle size and the like.

The invention discloses a copper-doped ZnSnO3 visible light photocatalyst and a preparation method thereof. The preparation method comprises the steps of: preparing copper oxide, zinc oxide and tin oxide according to stoichiometric proportion CuxZn<1-x>SnO3, wherein x is smaller than or equal to 0.1; carrying out coprecipitation process and low-temperature calcining to obtain the copper-doped ZnSnO3 visible light photocatalyst with good stability. The photocatalyst has higher quantum conversion efficiency and stability and can be directly applied to treat waste water of the printing and dyeing industry.

The invention relates to a macromolecule resistance type humidity-sensitive element. The element is characterized by comprising a packaging shell, a base body, a humidity-sensitive film, an interdigital electrode and pins, wherein the base body is a humidity-sensitive sensing base body, and the humidity-sensitive film is arranged on the surface of the interdigital electrode and the surface of the base body; the interdigital electrode comprises a transverse electrode and a longitudinal electrode. The organic polymer material is compounded by adopting a multi-layer brush coating technology, resistance of the polymer resistance type humidity sensor in a low-humidity environment is remarkably reduced, sensitive detection on the low-humidity environment is realized, deliquescence resistance of the film is improved by doping cellulose, in addition, precision of silk-screen printing based on a single screen printing plate is relatively low, and cost is relatively low. The element is advantaged in that the pattern of the interdigital electrode is split into the transverse electrode part and the longitudinal electrode part, the preparation precision of the interdigital electrode is improved through the multi-screen separate silk-screen printing technology, the adhesion between the electrode and the substrate is enhanced through copper doping of the conductive ink, and the humidity-sensitive characteristics of high sensitivity, good linearity, high response speed and high reliability are obtained.

The invention discloses a copper-doped cobalt phosphide bifunctional water electrolysis catalytic material in a hollow nanotube structure. The copper-doped cobalt phosphide bifunctional water electrolysis catalytic material comprises two steps of hydrothermal treatment and phosphatization. The copper-doped cobalt phosphide bifunctional water electrolysis catalytic material with the hollow nanotubestructure is of a special hollow nanotube array structure and has very high HER and OER catalytic activity; in addition, in an alkaline medium, the catalyst can be used as an anode material and a cathode material at the same time to be used for a full-water-splitting catalytic reaction, and excellent catalytic activity and long-term stability are also shown.

The invention discloses a one-step process for preparing a copper-doped tungsten trioxide composite nano-fiber material. The process comprises the following steps: S1, dissolving ammonium metatungstate in water, adding polyvinylpyrrolidone and a copper salt solution, and stirring to obtain a precursor solution; S2, performing electrostatic spinning on the precursor solution in S1 so as to obtain as-spun fibers; S3, calcining the as-spun fibers prepared in S2, thereby obtaining the material. The method provided by the invention is simple, feasible, accurately controllable in parameters, low in cost, green and environmental-friendly; the prepared copper-doped tungsten trioxide composite nano-fiber material is uniform in diameter distribution, large in draw ratio and stable in morphology, and due to copper doping, the photocatalytic degradation performance of tungsten trioxide is greatly improved. Furthermore, the composite nano-fiber material has excellent aniline degradation performance and has excellent application prospects in the field of water body pollution.

The invention discloses a copper-doped activated carbon composite material and a preparation method thereof. The composite material comprises doped element copper and petroleum coke-based activated carbon. The preparation method comprises the following steps: (1) uniformly mixing a copper-containing precursor compound, petroleum coke and an activating agent, and activating; and (2) washing and drying the sample obtained in the step (1) to obtain the composite material. In the copper-doped active carbon composite material prepared by the method, the active metal copper is highly dispersed on the surface of the active carbon in a reduction state, and the combination effect with the active carbon is relatively strong, so the problem of metal falling cannot occur, and the preparation method issimple and feasible.

The present invention discloses a carbon nanotube-graphene loaded copper palladium catalyst PdCl2 / Cu-nanotube-graphene for synthesizing diethyl carbonate through gas-phase carbonyl oxidation, wherein the carrier of the catalyst is a carbon nanotube-graphene composite material, the active component is any one selected from a divalent copper salt such as CuCl2, Cu(NO3)2, Cu(CH3COO)2 and CuSO4, the auxiliary agent of the catalyst is PdCl2, the copper doping amount is 0.1-2% of the carrier mass, and the palladium loading amount is 0.010-0.025% of the carrier mass. According to the invention, the prepared catalyst is used for the diethyl carbonate synthesis reaction through the gas-phase ethanol oxidation, the conversion rate of the target product diethyl carbonate is high, and the selectivity is good.

The invention relates to a copper-doped ternary metal halide and a preparation method thereof, and belongs to the technical field of perovskite crystal material preparation. The copper-doped ternary metal halide is a Cu-doped Rb2AgI3 perovskite fluorescent material. The preparation method comprises the following steps: mixing rubidium iodide, silver iodide and cuprous iodide, dropwise adding hypophosphorous acid, carrying out ball milling in a ball mill at 35Hz for 15h, carrying out ethanol cleaning, carrying out vacuum drying, and finally, carrying out cooling treatment at -5--20 DEG C to obtain the copper-doped ternary metal halide Rb2AgI3: Cu with high purity and enhanced fluorescence efficiency. The sample emits bright blue fluorescence under the excitation of a 302nm ultraviolet lamp,and has the advantages of no toxicity, high quantum efficiency, high air stability and the like.

The present invention discloses an ultrathin and semitransparent thin film solar cell and a preparation method thereof. The ultrathin and semitransparent thin film solar cell comprises a glass substrate, a transparent conductive thin layer, an N-type transition layer, a light-absorption layer, a passivation layer and a back electrode which are overlapped in order; the passivation layer is a copper-doping semiconductor layer, the back electrode is an NTO conductive film, and the light-absorption layer is a CdTe film, a CdSe film, a CdZnTe film, a CdSeTe film, a CdMgTe film, a CuGaSe2 film, a CuInSe2 film or a Cu2ZnSnS2 film. The ultrathin and semitransparent thin film solar cell employs the copper-doping semiconductor layer as the passivation layer to effectively eliminate the surface dangling bond of the light-absorption layer; the ultrathin and semitransparent thin film solar cell is in good contact with the interface of the back electrode so as to improve the short circuit current density of the cell; and moreover, the visible light transmittance of the cell can reach more than 10% and the photoelectric conversion efficiency is high through the passivation layer tunneling and rectification effect.