Product
Feature
Quick Research
Generate reliable direction feasibility study reports for your R&D in just a few steps.
Technical Q&A
Discover and master advanced knowledge NOW. Basics, ideas, possibilities, all at once.
Find Solutions
As an expert in R&D theories, this can generate solutions to your technical problems instantly.
Evaluate Feasibility
Analyze your overall solution with one click, know your potential R&D risks in advance.
Monitor Landscape
Get weekly tech updates, stay abreast of the latest tech innovations and key insights.
Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
53results about How to "Control doping" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
TiO2 catalyst with large specific surface area and visible-light response function and method for preparing TiO2 catalyst
ActiveCN105195197AHigh visible light photocatalytic performanceVisible light photocatalytic performance is highPhysical/chemical process catalystsWater/sewage treatment by irradiationPtru catalystPhoto catalysis
The invention provides a TiO2 catalyst with a large specific surface area and a visible-light response function and a method for preparing the TiO2 catalyst, and belongs to the technical field of photocatalysis. Ti-MOF (MIL-125 (Ti)-NH2) which is used as a self-template is sintered and synthesized in atmosphere of oxygen and hydrogen with a certain proportion (of oxygen to hydrogen of 1:5-1:10) to obtain the catalyst which is a TiO2 polyhedron with auto-doped N and a large specific surface area. The TiO2 catalyst and the method have the advantages that morphology of MOF can be effectively copied by the aid of the template method, and the specific surface area of TiO2 can be greatly increased by microporous structures and can reach 262.3 m<2> / g; MOF ligands are regulated and controlled, N, F and S elements are doped in the TiO2, and accordingly the visible-light photocatalyst performance of the TiO2 can be improved.
Owner:FUZHOU UNIV
Preparation method for nano hydroxylapatite doped with metal ions
The invention relates to a preparation method of nano hydroxylapatite doped with metal ions, which comprises the following steps of: firstly, respectively preparing Ca(NO3)2 and (NH4)2HPO4 solution, mixing the Ca(NO3)2 and (NH4)2HPO4 solution, and obtaining clear and transparent solution A; adding metal nitrate into solution A and obtaining clear and transparent solution B; adding CO(NH2)2 into solution B, and obtaining solution C; finally heating and backflowing the solution C for 3 to 5 hours with the temperature of 100 DEG C under the magnetic force stirring; after the reaction is end, naturally cooling to room temperature; then vacuum-filtering, cleaning with water, drying for 24 hours under the temperature of 100 DEG C; and finally, obtaining nano hydroxylapatite crystal doped with metal ions. The preparation method adopts a metal salt solution heating even precipitation method, and takes inorganic salts containing calcium and phosphate group as raw materials; urea is acidity of a control reaction system of an additive; metal salts are added according to the doped proportion of 1 percent to 5 percent; reaction is carried out under the magnetic force stirring and heating conditions; and the backflowing of reaction liquid is adopted to synthesize nanoscale metal-doped nano hydroxylapatite crystal by one step. The method is obviously characterized by even doping and easy control for added amount.
Owner:SHAANXI UNIV OF SCI & TECH
Titanium-doped barium ferrite ceramic material and preparation method thereof
The invention discloses a titanium-doped barium ferrite ceramic material and a preparation method thereof. Densification sintering of the ceramic material is achieved through titanium doping, and electron hopping and a nonuniform conduction structure are formed through the replacement of iron ions to titanium ions. The ceramic has high residual magnetization, and great dielectric constant can be produced by utilizing the nonuniform conduction structure. The preparation method of the titanium-doped barium ferrite ceramic comprises the following steps of: preparing a ceramic precursor through a citrate sol-gel method, and then molding and sintering at high temperature to obtain the titanium-doped barium ferrite ceramic, wherein the molar ratio of titanium to barium is controlled between 0.4 and 0.8; and the molar ratio of iron to barium is between 11.6 and 11.2. According to the titanium-doped barium ferrite ceramic material and preparation method thereof, the process is simple, the cost is low, and meanwhile extremely high dielectric constant, high saturation magnetization and residual magnetization can be obtained. The residual magnetization acts as an important multifunctional material and can be used for developing preparation of relative electronic components.
Owner:ZHEJIANG UNIV
Graphene/zinc oxide negative electrode material for lithium ion battery, and preparation method thereof
ActiveCN104167537AControl dopingControl thicknessCell electrodesSecondary cellsDischarge efficiencyComposite film
The invention discloses a graphene / zinc oxide negative electrode material for a lithium ion battery, and a preparation method thereof. The graphene / zinc oxide negative electrode material for the lithium ion battery is a blend comprising graphene and zinc oxide according to a mass ratio of 1:9-2:8. The preparation method comprises the steps of dissolving water-containing zinc nitrate and graphene oxide powder in a mixed solution of 1,2-propylene glycol and absolute ethyl alcohol; stirring with ultrasonic waves to obtain a precursor solution used for ESD; fixing a metal substrate on a substrate-clamping plate; heating to a temperature of 100-250 DEG C; spraying the precursor solution used for ESD to a substrate material; spraying for 1-2 hours; and cooling to obtain the graphene / zinc oxide negative electrode material for the lithium ion battery. The material is a composite film having a porous structure, can be used as a negative electrode material of the lithium ion battery, can increase contact area between the electrode material and electrolyte, increases charge-discharge efficiency of the battery, and provides more space for volume expansion of zinc oxide after combination with lithium ions, thereby improving the whole electrochemical properties of the negative electrode material of the battery.
Owner:衢州恒创新能源科技有限公司
Porous reduced graphene oxide oil absorption material with controllable doping level and preparation method thereof
ActiveCN106693898AHigh oil absorptionFacilitates selective oil absorptionOther chemical processesOil waterPore diameter
The invention discloses a porous reduced graphene oxide oil absorption material with a controllable doping level and a preparation method thereof. The porous reduced graphene oxide oil absorption material with the controllable doping level is of a hierarchical porous structure stacked layer by layer; a reduced graphene oxide aerogel is adopted as a substrate; and amino acid is doped in a framework of the reduced graphene oxide aerogel. The preparation method provided by the invention comprises the steps of firstly mixing graphene oxide and an amino acid reducing agent dissolving solution; then obtaining a reduced graphene oxide hydrogel through a high pressure hydrothermal method; and finally, washing the hydrogel, freezing at low temperature for pore-forming, and obtaining the porous reduced graphene oxide oil absorption material. The oil absorption material provided by the invention has favorable hydrophobicity, has a better adsorption capacity on an oil product and an organic pollutant, and achieves the aim of oil-water separation in an oil-water composite environment; and meanwhile, pore diameter distribution and a pore structure of the material can be regulated and controlled through the control on the doping level, the selective oil absorption of the material is promoted, and the selective adsorption of the oil product is realized.
Owner:SHANGHAI INST OF TECH
Method for preparing black titanium dioxide by using hydrothermal synthesis method
The invention discloses a method for preparing black titanium dioxide by using a hydrothermal synthesis method. The method comprises the following specific steps: (1) adding sodium peroxide or potassium peroxide into titanium hydride or titanium nitride powder, mixing the materials uniformly, adding water, and stirring the materials uniformly; (2) soaking the polytetrafluoroethylene lining of a reaction kettle into aqua regia at the room temperature for 1 hour, boiling the polytetrafluoroethylene lining with distilled water for three times, putting a powder mixed solution prepared in the step (1) into the polytetrafluoroethylene lining, putting the polytetrafluoroethylene lining into a matched steel casing, and tightening the steel casing; (3) putting the reaction kettle into a constant-temperature reactor, and reacting at the temperature of 150-250 DEG C for 3-7 hours; (4) after the reaction, centrifuging a product obtained in the step (3), discarding supernatant, taking precipitate out, and washing the precipitate with deionized water; and (5) drying the precipitate obtained in the step (4) to obtain the black titanium dioxide powder.
Owner:重庆深盟新材料科技有限公司
Method for preparing tungsten-doped vanadium oxide film
ActiveCN102251216AAvoid mutual contaminationStable sputtering processVacuum evaporation coatingSputtering coatingTungsten filmSputter cleaning
The invention discloses a method for preparing a tungsten-doped vanadium oxide film, comprising the following steps of: firstly, placing the cleaned substrate into a high vacuum chamber; secondly, introducing high-purity argon gas into a vacuum chamber; respectively carrying out sputter cleaning on the surfaces of a metal vanadium target and a metal tungsten target by turning on a vanadium target sputter power supply and a tungsten target sputter power supply under the condition that the substrate is shielded by using a substrate baffle; introducing high-purity oxygen gas into the vacuum chamber; opening the substrate baffle, closing a tungsten target baffle, turning on the vanadium target sputter power supply and depositing a bottom layer vanadium oxide film; after the depositing the bottom layer vanadium oxide film, closing oxygen gas and the vanadium target baffle and turning off the vanadium target sputter power supply, turning on the tungsten target sputter power supply and opening the tungsten target baffle and depositing an intermediate layer of tungsten film; after depositing the metal tungsten film, turning off the tungsten target sputter power supply and closing the tungsten target baffle, introducing oxygen gas again, turning on the vanadium target sputter power supply and opening the vanadium target baffle and depositing the vanadium oxide film; and finally, carrying out in-situ annealing treatment on a composite film obtained through deposition.
Owner:UNIV OF ELECTRONIC SCI & TECH OF CHINA
Production method of photocatalytic composite microspheres
InactiveCN106311100AGood dispersionEnhanced quantization effectOrganic-compounds/hydrides/coordination-complexes catalystsDispersed particle separationPolymer scienceGas phase
The invention discloses a production method of photocatalytic composite microspheres, comprising the steps of (1) preparing a polymer precursor; (2) producing sol from a photocatalyst and doping photosensitive materials; (3) mixing protecting glue and suitable water to produce a copolymerization continuous phase, and adding the polymer precursor of step (1) and the sol of step (2), and mixing well; (4) adjusting system acid-base environment, controlling polymerizing speed of the polymer precursor, and polymerizing the polymer precursor to obtain polymer microspheres, doping photocatalytic material and photosensitive material at a certain speed, and loading to the polymer microspheres to obtain photocatalytic microspheres, with the photocatalytic microspheres controlled in the range of 1-5 Mum; (5) adjusting acid-base environment, ending the reaction, filtering a suspension to obtain filter cakes, and washing the filter cakes three times with hot purified water at 80 DEG C; (6) drying the filter cakes at 100 DEG C, grinding into powder with a mortar, thermally treating in an oven at 130 DEG C for 3 h, removing micromolecular volatiles, and grinding into powder that is photocatalytic microsphere dried powder. The photocatalytic composite microspheres herein can degrade gaseous organic pollutants, can also kill harmful bacteria and is widely applicable.
Owner:尤子满
Bi0.90Ho0.10Fe1-XMnXO3 ferroelectric film with high remanent polarization and preparation method thereof
ActiveCN103708562AImprove insulation performanceReduce generationIron compoundsCrystal systemMANGANESE ACETATE
The invention relates to a Bi0.90Ho0.10Fe1-xMnXO3 ferroelectric film with high remanent polarization and a preparation method thereof, wherein x is equal to 0.01-0.05, and the film is of a distorted perovskite structure, has a diamond crystal system and has good uniformity, remanent polarization of 78-108 muC / cm<2>, and a dielectric constant of 196.2-271.8. The preparation method comprises the steps of dissolving bismuth nitrate, ferric nitrate, holmium nitrate and manganese acetate in a mixture prepared by mixing ethylene glycol monomethyl ether and acetic anhydride to obtain a precursor solution; spin-coating the precursor solution on a substrate, coating glue evenly, then baking to obtain a dry film, then annealing to obtain a Bi0.90Ho0.10Fe1-xMnXO3 film, and repeatedly spin-coating the precursor solution, baking and annealing to achieve the required film thickness to obtain the film. According to the Bi0.90Ho0.10Fe1-xMnXO3 ferroelectric film with high remanent polarization and the preparation method thereof, the requirements for equipment are simple, the doping amount is easy to control, and the ferroelectric properties of the BiFeO3 film can be greatly improved.
Owner:SHAANXI UNIV OF SCI & TECH
Method for preparing double-layer anti-reflection film for silicon solar cell
InactiveCN110112227AGood mechanical strength and friction resistanceImprove absorption efficiencyFinal product manufacturePhotovoltaic energy generationPliabilityChemistry
Owner:陈君
AlGaInP semiconductor laser with superlattice limiting layer
ActiveCN108346972AImprove solubilityIncrease the doping concentrationOptical wave guidanceLaser detailsQuantum wellOhmic contact
The present invention relates to an AlGaInP semiconductor laser with a superlattice limiting layer. The AlGaInP semiconductor laser includes a substrate, a lower limiting layer, a lower waveguide layer, a quantum well layer, an upper waveguide layer, a first upper limiting layer, a second upper limiting layer and an ohmic contact layer from the bottom to the top. The first upper limiting layer isa superlattice structure in which an AlGaInP material of a high aluminum component and an AlGaInP material of a low aluminum component are alternately grown, in the first upper limiting layer, the doping material of the AlGaInP material of the high aluminum component is Mg, the doping material of the AlGaInP material of the low aluminum component is Mg, the second upper limiting layer is the AlGaInP material of the high aluminum component, and the doping material of the second upper limiting layer is Mg. According to the AlGaInP semiconductor laser, the highly doped first upper limiting layerand second upper limiting layer are used, the series resistance of an epitaxial layer can be reduced, the generation of Joule heat is reduced, and the photoelectric conversion efficiency is improved.
Owner:Shandong Huaguang Optoelectronics Co. Ltd.
Novel synthetic method for lanthanum-manganese doped strontium ferrite magnetic powder
ActiveCN103601483AHigh purityImprove magnetic propertiesMaterial nanotechnologyStrontiumCoprecipitation
The invention relates to a formula and a synthetic method for lanthanum-manganese doped strontium ferrite magnetic powder with an adjustable magnetic coercive force, belonging to the technical fields of chemical coprecipitation preparation and preparation of magnetic materials. The method comprises the following steps dissolving soluble salt compounds (e.g., chlorate, nitrate, sulfate and acetate) of iron, strontium, manganese and lanthanum in deionized water according to a certain mol ratio and carrying out magnetic stirring; then adding a triethylamine solution and carrying out stirring while pouring until no precipitated is precipitated; allowing the precipitate to be filtered, putting the precipitate into a baking oven and removing water at a temperature of 120 DEG C; and carrying out grinding again and sintering at a temperature of 900 DEG C to prepare the lanthanum-manganese doped strontium ferrite nanometer powder. According to characterization results of the powder by XRD, the strontium ferrite retains its original structure. According to SEM observation, the microstructure of the strontium ferrite is mainly rod-like and hexagonal flaky semitransparent crystals. Through changing of the doping amount of lanthanum and manganese, the coercive force of the strontium ferrite is effectively adjusted, demands of different magnetic recording materials are met, and the application range of the strontium ferrite is broadened.
Owner:盐城东方汽车广场投资发展有限公司
BiFe1-XMnXO3 ferroelectric film with high remnant polarization and preparation method thereof
ActiveCN103739019AImprove electrical performanceInhibition of price changeIron compoundsAcetic acidMANGANESE ACETATE
The invention discloses a BiFe1-XMnXO3 ferroelectric film with high remnant polarization and a preparation method thereof, and x is equal to 0.02-0.08. The BiFe1-XMnXO3 ferroelectric film is of a twisty perovskite structure, belongs to a rhombohedral system, and is good in uniformity. At the frequency of 1kHz, the remnant polarization is 100-130.4mu C / cm<2>. The preparation method comprises the steps of: dissolving bismuth nitrate, ferric nitrate and manganese acetate in a mixed solution of ethylene glycol monomethyl ether and acetic anhydride according to a molar ratio of 1.05:(1-x) to obtain a precursor solution; and spinning the precursor solution on a substrate, homogenating and baking to obtain a dry film; annealing to obtain the BiFe1-XMnXO3 ferroelectric film, repeatedly carrying out the steps of spinning the precursor solution, baking, and annealing till a required film thickness is reached, thus obtainng the BiFe1-XMnXO3 ferroelectric film with high remnant polarization. The BiFe1-XMnXO3 ferroelectric film is simple in requirement of equipment, easily controllable in doping amount, and capable of greatly improving ferroelectric properties and dielectric properties of a BiFeO3 film.
Owner:SHAANXI UNIV OF SCI & TECH
Hollow spherical tantalum-doped Cu<7>S<4> material as well as preparation method and application thereof
ActiveCN111326352AHigh specific capacityControl dopingHybrid capacitor electrodesHybrid/EDL manufactureCopper nitrateWater chlorination
The invention provides a hollow spherical tantalum-doped Cu<7>S<4> material as well as a preparation method and application thereof. The chemical formula of the hollow spherical tantalum-doped Cu<7>S<4> material prepared by the invention is expressed as Ta / Cu<7>S<4>, wherein the atomic percentage content of Ta element is 1.6-3.2%; and the material is of a hollow sphere structure, and the diameterof the material is 2-10 microns. The preparation method used in the invention comprises: dissolving copper nitrate, tantalum pentachloride, sodium hydroxide and lauryl sodium sulfate in ethylene glycol to form a mixed solution, and carrying out solvothermal treatment to obtain precursor powder; and uniformly dispersing the obtained precursor powder in an ethylene glycol solution of sodium sulfide,carrying out a heating vulcanization reaction to generate Ta / Cu<7>S<4>, and carrying out filtering, cleaning and vacuum drying to obtain a target product. The material has relatively high specific capacity and excellent rate capability, and is suitable for being applied to a supercapacitor negative electrode material.
Owner:BEIJING UNIV OF CHEM TECH
Cobalt-antimonide-base thermoelectric film and preparation method thereof
ActiveCN104388901AGood adhesionGood repeatabilityVacuum evaporation coatingSputtering coatingSputter depositionControllability
The invention discloses a cobalt-antimonide-base thermoelectric film and a preparation method thereof. The preparation method comprises the following steps: by using a cobalt antimonide target as a sputtering target, and separately making a material to be doped into a doping target; fixing the sputtering target and doping target to a rotating target rack of a multi-station sputtering system for later sputtering; and plating a cobalt antimonide film on an insulating substrate by sputtering deposition while sputtering the doping material on the antimonide cobalt film by many times to obtain a laminated-structure film, and finally, carrying out in-situ heat treatment to obtain the cobalt-antimonide-base thermoelectric film. The method has high controllability, and is beneficial to generation of the film structure; the film has favorable adhesiveness and repetitiveness, can satisfy the demands for large-scale production, and can accurately control the sputtering power, time and other parameters as well as the doping amount of the doping material; and by adopting the lamination mode, multiple elements can be simultaneously doped conveniently, and the complex techniques for preparing the multi-doping-element target are reduced.
Owner:SHENZHEN UNIV
Rare-earth-element-doped defective UiO-66 material as well as preparation method and application thereof
InactiveCN113019331AControl dopingLarge specific surface areaOther chemical processesWater contaminantsRare-earth elementTetrachloride
The invention provides a rare-earth-element-doped defective UiO-66 material as well as a preparation method and application thereof, and belongs to the technical field of wastewater treatment. The preparation method of the defective UiO-66 material comprises the following steps: mixing zirconium tetrachloride, terephthalic acid, N,N-dimethylformamide and rare earth oxide, and carrying out solvothermal reaction on the obtained mixture to obtain the rare-earth-element-doped defective UiO-66 material. The rare earth oxide is Sm2O3, Eu2O3, Er2O3 or Tm2O3; and the molar ratio of the zirconium tetrachloride to the terephthalic acid to the rare earth oxide is 1:1:(0.25-0.5). The defective UiO-66 material prepared by the preparation method disclosed by the invention has a relatively large adsorption capacity on Sb.
Owner:NANCHANG HANGKONG UNIVERSITY
A method for preparing black titanium dioxide by hydrothermal synthesis
The invention discloses a method for preparing black titanium dioxide by using a hydrothermal synthesis method. The method comprises the following specific steps: (1) adding sodium peroxide or potassium peroxide into titanium hydride or titanium nitride powder, mixing the materials uniformly, adding water, and stirring the materials uniformly; (2) soaking the polytetrafluoroethylene lining of a reaction kettle into aqua regia at the room temperature for 1 hour, boiling the polytetrafluoroethylene lining with distilled water for three times, putting a powder mixed solution prepared in the step (1) into the polytetrafluoroethylene lining, putting the polytetrafluoroethylene lining into a matched steel casing, and tightening the steel casing; (3) putting the reaction kettle into a constant-temperature reactor, and reacting at the temperature of 150-250 DEG C for 3-7 hours; (4) after the reaction, centrifuging a product obtained in the step (3), discarding supernatant, taking precipitate out, and washing the precipitate with deionized water; and (5) drying the precipitate obtained in the step (4) to obtain the black titanium dioxide powder.
Owner:重庆深盟新材料科技有限公司
Preparation method of aluminum-doped cobaltosic oxide particles
PendingCN114368792AImprove uniformityReduce sedimentation rateCobalt oxides/hydroxidesPeristaltic pumpAluminum Ion
The invention discloses a preparation method of aluminum-doped cobaltosic oxide particles, which comprises the following steps: firstly, respectively preparing a cobalt salt solution, an ammonium bicarbonate solution and a sodium metaaluminate solution with certain concentrations; then adding the solution into a reaction kettle in which a certain amount of base solution is reserved in advance through a peristaltic pump in a parallel flow manner, reacting, and controlling the reaction temperature to be 35-60 DEG C and the pH value of a reaction system to be 7-7.6; and finally, the obtained product is calcined, the calcination temperature is 200-900 DEG C, the calcination time is 4-15 h, and finally the aluminum-doped cobaltosic oxide particles are obtained. In the method disclosed by the invention, Al enters the reaction kettle in the form of anion AlO2 <->, so that the precipitation rate of aluminum ions in the reaction kettle is slowed down, the uniformity of Al doped in cobaltosic oxide is improved, and the aluminum salt adopts an independent feeding mode, so that the content of aluminum element in cobalt carbonate is better regulated and controlled, the reaction is easier to control, and the reaction yield is improved. Large-particle aluminum-doped uniform cobaltosic oxide can be prepared, and the particle size can reach 14-17 microns.
Owner:JINGMEN GEM NEW MATERIAL
Lanthanum indium co-doped strontium titanate conductor material and preparation method thereof
InactiveCN105976892AImprove electronic conductivityImprove ionic conductivityNon-conductive material with dispersed conductive materialCable/conductor manufactureElectrical conductorLanthanum
The invention provides a lanthanum indium co-doped strontium titanate conductor material and a preparation method thereof. According to the invention, a material chemical general formula is Sr1-xLaxTi1-yInyO3, and 0.1< / =x< / =0.4 and 0.03< / =y< / = 0.1; tetrabutyl titanate is used as a titanium source; anhydrous ethanol and isopropyl alcohol are used as solvents; the oxide of lanthanum and indium is used as a dopant raw material; a sol-gel method is used to prepare the lanthanum indium co-doped strontium titanate conductor material; the lanthanum indium co-doped strontium titanate conductor material has a single cubic phase perovskite structure, has the advantages of good stability, excellent electronic conduction and ion conductance, and can satisfy the application needs of many fields such as a fuel cell anode material, an oxygen permeation membrane, an automobile exhaust gas sensor and the like; and compared with a traditional solid-phase sintering method, the preparation method provided by the invention has the advantages of short reaction time, low energy consumption, high product density, uniform composition, wide application prospect and the like.
Owner:HONGHE COLLEGE
Heteroatom in-situ doped porous carbon composite lithium negative electrode and preparation method and application thereof
PendingCN113991094AUniform depositionControl dopingNegative electrodesLi-accumulatorsPorous carbonNew energy
The invention relates to the technical field of electrochemistry and new energy materials, in particular to a heteroatom in-situ doped porous carbon composite lithium negative electrode and a preparation method and application thereof. The heteroatom in-situ doped porous carbon composite lithium negative electrode comprises the following raw materials: a porous carbon material and lithium, the porous carbon material comprises a carbon framework containing a pore structure, the carbon framework is uniformly doped with heteroatoms, and the heteroatoms comprise at least one of nitrogen, oxygen, phosphorus and sulfur. According to the scheme, the technical problem that the battery performance is difficult to improve due to the fact that an existing lithium negative electrode and a preparation method thereof cannot effectively improve the deposition-dissolution behavior of lithium is solved. According to the scheme, the three-dimensional porous carbon framework containing the electronegative functional group is used, the deposition-dissolution behavior of lithium is directionally regulated and controlled, and the prepared heteroatom in-situ doped porous carbon composite lithium negative electrode has a wide application prospect in the fields of liquid lithium ion batteries and solid lithium batteries.
Owner:重庆硕盈峰新能源科技有限公司
Silicate based energy storing and light reflecting type luminescent material
InactiveCN107936959AIncreased catch chanceWell mixedLuminescent compositionsRare earthOptoelectronics
The invention provides a silicate based energy storing and light reflecting type luminescent material. The energy storing and light reflecting type luminescent material is characterized in that the structure formula is Sr1.99Mg0.97Si2O7: Eu0.01Dy0.03; rare-earth metals Eu and Dy enter Sr2MgSi2O7 crystal lattices to correspondingly substitute Sr and Mg ions to realize doping; reasonable technical steps and proper technical parameters are performed and adopted; raw materials are stirred and mixed in water, so that the raw material components can be completely dispersed and uniformly mixed, and moreover, the raw material components can be in full contact, so that the convenience of later roasting is ensured; the mixing ratio, the heating rate, the sintering temperature, the sintering time, etc. of the raw material components are strictly controlled; the sintering is carried out by step; the Eu and Dy doping conditions are controlled; the Eu substitutes Sr and occupies the location of Sr;Dy substitutes Mg and occupies the location of Mg, so that the probability of Dy capturing holes can be greatly increased, and as a result, the luminance can be further improved.
Owner:CHONGQING JIAOTONG UNIVERSITY
Rare earth doped alloy oxide luminescent coating and preparation method thereof
ActiveCN104480438AAchieve metallurgical bondingImprove bindingVacuum evaporation coatingSputtering coatingRare earthAlloy
The invention discloses a rare earth doped alloy oxide luminescent coating and a preparation method thereof, and relates to the field of materials engineering. An oxide metallurgical layer is formed between coating elements of the luminescent coating and matrix elements in an interdiffused manner, no obvious interfacial effect exists between the coating and the matrix, and the contents of all the elements in the metallurgy layer, from the surface to the matrix, are in gradient distribution. The method for preparing the rare earth doped alloy oxide luminescent coating is divided into three phases: pre-processing phase, alloy and rare earth co-permeation phase and plasma oxidation processing phase. According to the invention, the rare earth doped alloy oxide luminescent coating, which has luminescent property and the characteristic that the contents of rare earth oxides and matrix oxides are respectively in gradient distribution on the surfaces of metals, is prepared from rare earth and metals in an oxygen environment through co-permeation, so that the coating and the matrix are combined firmly; therefore, the rare earth doped alloy oxide luminescent coating can greatly improve the production efficiency, reduce the investment and the production cost, and achieve better economic efficiency.
Owner:江苏北方永磁科技有限公司
A large specific surface area-visible light-responsive tio 2 Catalyst and its preparation method
ActiveCN105195197BHigh visible light photocatalytic performanceVisible light photocatalytic performance is highPhysical/chemical process catalystsWater/sewage treatment by irradiationHydrogenOxygen
The invention provides a TiO2 catalyst with a large specific surface area and a visible-light response function and a method for preparing the TiO2 catalyst, and belongs to the technical field of photocatalysis. Ti-MOF (MIL-125 (Ti)-NH2) which is used as a self-template is sintered and synthesized in atmosphere of oxygen and hydrogen with a certain proportion (of oxygen to hydrogen of 1:5-1:10) to obtain the catalyst which is a TiO2 polyhedron with auto-doped N and a large specific surface area. The TiO2 catalyst and the method have the advantages that morphology of MOF can be effectively copied by the aid of the template method, and the specific surface area of TiO2 can be greatly increased by microporous structures and can reach 262.3 m<2> / g; MOF ligands are regulated and controlled, N, F and S elements are doped in the TiO2, and accordingly the visible-light photocatalyst performance of the TiO2 can be improved.
Owner:FUZHOU UNIV
High obstructive polyaniline composite film and its preparation method and use
InactiveCN100506893CImprove barrier propertiesImprove waterproof performanceComposite filmMicrosphere
The invention relates to a polyaniline composite film with high barrier property, which is a film composed of polyaniline and polyvinylidene chloride copolymer microspheres with a diameter of 100-1000 nanometers. After mixing the aniline solution and the polyvinylidene chloride copolymer solution, put it into the liquid supply device of the electrospray device, spray the mixed liquid from the spray device, and then the solvent volatilizes to obtain solidified intrinsic state polyaniline on the receiving device Composite film; then obtained by irradiating under a 45W ultraviolet lamp for 1 to 30 minutes. The composite film can be formed on any material and any shape of substrate, and the thickness and conductivity of the film are adjustable. It has the properties of electromagnetic shielding, antistatic, waterproof, acid and alkali resistance, and high gas barrier. It can be widely used in military affairs. , navigation, aerospace, mining engineering, medicine and health, hardware, electromechanical, packaging and other industries.
Owner:INST OF CHEM CHINESE ACAD OF SCI
Preparation method for nano hydroxylapatite doped with metal ions
The invention relates to a preparation method of nano hydroxylapatite doped with metal ions, which comprises the following steps of: firstly, respectively preparing Ca(NO3)2 and (NH4)2HPO4 solution, mixing the Ca(NO3)2 and (NH4)2HPO4 solution, and obtaining clear and transparent solution A; adding metal nitrate into solution A and obtaining clear and transparent solution B; adding CO(NH2)2 into solution B, and obtaining solution C; finally heating and backflowing the solution C for 3 to 5 hours with the temperature of 100 DEG C under the magnetic force stirring; after the reaction is end, naturally cooling to room temperature; then vacuum-filtering, cleaning with water, drying for 24 hours under the temperature of 100 DEG C; and finally, obtaining nano hydroxylapatite crystal doped with metal ions. The preparation method adopts a metal salt solution heating even precipitation method, and takes inorganic salts containing calcium and phosphate group as raw materials; urea is acidity of a control reaction system of an additive; metal salts are added according to the doped proportion of 1 percent to 5 percent; reaction is carried out under the magnetic force stirring and heating conditions; and the backflowing of reaction liquid is adopted to synthesize nanoscale metal-doped nano hydroxylapatite crystal by one step. The method is obviously characterized by even doping and easy control for added amount.
Owner:SHAANXI UNIV OF SCI & TECH
A kind of photocatalytic self-cleaning environmental protection coating and preparation method thereof
ActiveCN106381009BWide variety of sourcesLow priceEpoxy resin coatingsPollutionParticle-size distribution
The invention discloses a photocatalytic self-cleaning environment-friendly paint and a preparation method thereof. The paint is prepared by a hydrothermal method, and a post crystallization treatment is required. The prepared powder has the advantages of narrow particle size distribution, low agglomeration degree, pure components, small pollution during the preparation process, and easiness for industrial production. Moreover, the particle size of the powder can be adjusted by controlling the reaction conditions. The preparation technology is simple, and the equipment is cheap. The particle size of powder can be controlled by controlling the reaction conditions and doping concentration, and the obtained photocatalytic self-cleaning environment-friendly paint has a photocatalytic function and an excellent self-cleaning performance, and is heatproof and environment-friendly.
Owner:福建中美友拓科技发展有限公司
A cobalt antimonide-based thermoelectric thin film and its preparation method
ActiveCN104388901BGood adhesionGood repeatabilityVacuum evaporation coatingSputtering coatingSputter depositionControllability
The invention discloses a cobalt-antimonide-base thermoelectric film and a preparation method thereof. The preparation method comprises the following steps: by using a cobalt antimonide target as a sputtering target, and separately making a material to be doped into a doping target; fixing the sputtering target and doping target to a rotating target rack of a multi-station sputtering system for later sputtering; and plating a cobalt antimonide film on an insulating substrate by sputtering deposition while sputtering the doping material on the antimonide cobalt film by many times to obtain a laminated-structure film, and finally, carrying out in-situ heat treatment to obtain the cobalt-antimonide-base thermoelectric film. The method has high controllability, and is beneficial to generation of the film structure; the film has favorable adhesiveness and repetitiveness, can satisfy the demands for large-scale production, and can accurately control the sputtering power, time and other parameters as well as the doping amount of the doping material; and by adopting the lamination mode, multiple elements can be simultaneously doped conveniently, and the complex techniques for preparing the multi-doping-element target are reduced.
Owner:SHENZHEN UNIV
A kind of titanium-doped barium ferrite ceramic material and preparation method thereof
The invention discloses a titanium-doped barium ferrite ceramic material and a preparation method thereof. Densification sintering of the ceramic material is achieved through titanium doping, and electron hopping and a nonuniform conduction structure are formed through the replacement of iron ions to titanium ions. The ceramic has high residual magnetization, and great dielectric constant can be produced by utilizing the nonuniform conduction structure. The preparation method of the titanium-doped barium ferrite ceramic comprises the following steps of: preparing a ceramic precursor through a citrate sol-gel method, and then molding and sintering at high temperature to obtain the titanium-doped barium ferrite ceramic, wherein the molar ratio of titanium to barium is controlled between 0.4 and 0.8; and the molar ratio of iron to barium is between 11.6 and 11.2. According to the titanium-doped barium ferrite ceramic material and preparation method thereof, the process is simple, the cost is low, and meanwhile extremely high dielectric constant, high saturation magnetization and residual magnetization can be obtained. The residual magnetization acts as an important multifunctional material and can be used for developing preparation of relative electronic components.
Owner:ZHEJIANG UNIV
A rare earth-doped alloy oxide luminescent coating and preparation method thereof
ActiveCN104480438BAchieve metallurgical bondingImprove bindingVacuum evaporation coatingSputtering coatingRare earthAlloy
A rare-earth-doped alloy oxide luminescent coating and a preparation method thereof relate to the field of material engineering. An interdiffused oxide metallurgical layer is formed between the coating elements and the substrate elements of the luminescent coating, forming a gap between the coating and the substrate. There is no obvious interface effect, and the content of each element in the metallurgical layer is distributed in a gradient from the surface to the matrix. The preparation method of the rare earth-doped alloy oxide luminescent coating is divided into three stages: a pretreatment stage; an alloy and rare earth co-infiltration treatment stage; and a plasma oxidation treatment stage. The present invention uses the co-infiltration of rare earths and metals in an oxygen environment to prepare a rare earth doped alloy oxide coating with luminescent properties on the metal surface where the contents of rare earth oxides and matrix oxides are respectively distributed in gradients, so that the coating and The combination between the substrates is firm, so the invention can greatly improve production efficiency, reduce investment, reduce production cost, and can achieve better economic benefits.
Owner:江苏北方永磁科技有限公司
Temperature sensor based on doped transition metal nitride and preparation method of temperature sensor
ActiveCN112941488AControl dopingControl thicknessThermometers using electric/magnetic elementsVacuum evaporation coatingChemical physicsPhysical chemistry
The invention provides a temperature sensor based on doped transition metal nitride and a preparation method of the temperature sensor. The method comprises the steps that cation vacancies are introduced into a transition metal nitride film to form a doped transition metal nitride film in the preparation process of the transition metal nitride film or after the transition metal nitride film is prepared; the crystal structure of the doped transition metal nitride film is subjected to phase change by regulating and controlling the concentration of the cation vacancies, so that the ideal doped transition metal nitride film is obtained; and the target temperature sensor is prepared by adopting the doped transition metal nitride film through an MEMS processing technology. According to the preparation method of the temperature sensor based on the doped transition metal nitride, the structure and the resistance of the temperature sensitive film are regulated and controlled by regulating and controlling the vacancy concentration, finally the temperature area and the sensitivity of the temperature sensor are adjustable, and the method has guiding significance in the development of resistance-type doped transition metal nitride film temperature sensors suitable for different target temperature areas.
Owner:SHANGHAI JIAO TONG UNIV
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Patsnap Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com