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47 results about "Zno nanocrystals" patented technology
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Zinc oxide/graphene oxide composite optical switch material and electrochemical preparation method thereof
InactiveCN102304737ASimple production conditionsReduce manufacturing costElectrolytic coatingsFinal product manufactureZno nanocrystalsOxide composite
The invention discloses a zinc oxide / graphene oxide composite optical switch material and an electrochemical preparation method thereof. The composite material uses conductive glass as the substrate and is prepared by depositing a columnar zinc oxide film with thickness of 300-800 nm on an electrochemically deposited graphene oxide film with thickness of 8-30 nm through an electrochemical deposition method. The preparation method comprises the following steps: depositing a graphene oxide film with thickness of 8-30 nm by using a three-electrode system and taking indium tin oxide (ITO) as the working electrode; and then depositing columnar zinc oxide nano-crystals in a zinc nitrate solution by using the three-electrode system and taking the uniformly deposited graphene oxide film electrode as the working electrode to obtain the zinc oxide / graphene oxide composite optical switch material. The prepared composite material has the advantages of good film-forming property, uniform thickness, controllable optical and electrical properties, short photoelectric response time and the like; and the preparation process is simple, the yield is high and the period is short.
Owner:TIANJIN UNIV
Zinc oxide-gadolinium-drug composite nanoparticle, and preparation method and application thereof
InactiveCN105126125ACapable of killingSelective killOrganic active ingredientsPowder deliveryCarboxyl radicalZno nanocrystals
The invention belongs to the technical field of nanometer materials, and particularly relates to a zinc oxide-gadolinium-drug composite nanoparticle, and a preparation method and application thereof. The composite nanoparticle comprises a zinc oxide nanocrystal core, a polymer shell, gadolinium (III) ions modified by coordinate bonds and surface-loaded anti-cancer drug molecules, has high stability, luminescence property and magnetic relaxation rate and can be applied to cell and small animal fluorescence imaging, magnetic resonance imaging, mouse tumor treatment and the like. The preparation method includes coating a zinc oxide nanoparticle with a polymer through two copolymerization reactions, coordinating a large quantity of carboxyl groups carried by the polymer with the gadolinium (III) ions to magnetize the nanoparticle, and loading the drug molecules onto the surface of the nanoparticle. A nanoparticle drug loading platform has a good fluorescence-magnetic resonance imaging function, high drug loading rate and high release rate, is low in toxicity and is completely degraded in mouse bodies without residues, thereby having better biosecurity and medication specificity than anti-cancer drugs.
Owner:FUDAN UNIV
Preparation method of ceramic membrane loaded zinc oxide photocatalyst
ActiveCN105396570AAvoid separationControl shapeCatalyst activation/preparationMetal/metal-oxides/metal-hydroxide catalystsPtru catalystZno nanocrystals
The invention relates to a preparation method of a ceramic membrane loaded zinc oxide photocatalyst, and belongs to the technical field of catalysis. A ceramic membrane acts as a carrier of the catalyst. The preparation method comprises the following steps: loading a layer of zinc oxide nano seed crystals on the surface of the ceramic membrane by adopting a dip-coating calcination method, and then preparing the ceramic membrane loaded zinc oxide photocatalyst by a hydrothermal method. The preparation method of the ceramic membrane loaded zinc oxide photocatalyst has the advantages that the photocatalyst is loaded to the surface of the ceramic membrane so as to prevent the problem of subsequent separation difficulty of the catalyst and a product. The catalyst is simple in preparation technology, is high in photocatalysis performance, and can be well applied to the catalytic degradation process.
Owner:NANJING UNIV OF TECH
Preparation method of ZnO nanocrystals
InactiveCN102951672AAchieving controllable synthesisEasy to operateMaterial nanotechnologyZinc oxides/hydroxidesOrganic solventZno nanocrystals
The invention discloses a preparation method of ZnO nanocrystals. The method comprises the following steps of: dissolving the mixture between Zn(NO3)2.6H2O and any one of hexamethylene tetramine and NaOH in mixed liquor of water and organic solvent, and carrying out hydrothermal reaction to obtain the ZnO nanocrystals, wherein the mole fraction ratio of Zn(NO3)2.6H2O to hexamethylene tetramine is 1: 1, and the mole fraction ratio of Zn(NO3)2.6H2O to NaOH is 1: (5-20). The preparation method of the ZnO nanocrystals disclosed by the invention has the advantages of being simple in operation technological process, low in raw material price, low in reaction temperature, easy for large-scale production and the like, and some reference basis can be provided for the preparation of ZnO nano-materials and the indusial production of the ZnO nano-materials by the typical hydrothermal reaction. Meanwhile, according to the preparation method, after the test parameters are controlled, the ZnO nanocrystals with different shapes and sizes can be successfully prepared, the controllable synthesis of the ZnO nanocrystals can be realized, and the action mechanism and the crystal growth law of different influencing factors can be expounded.
Owner:TSINGHUA UNIV
Water polyurethane base flower cluster-shaped zinc oxide nanometer whisker antibiotic composite material, preparation method and use thereof
The invention relates to a WBPU base cluster-shaped zinc oxide nano-crystal whisker antibiosis composite material and a preparation method and application thereof. In terms of parts by weight, the composite material of the invention contains 100 parts by weight of WBPU substrate and 0.3-2 parts by weight of cluster-shaped zinc oxide nano-crystal whisker antibacterial agent which undergoes ultrasonic dispersion treatment for preparing the composite material by using the blending of an ultrasonic auxiliary solution. The invention has simple preparation method and small addition amount, overcomes the problem of the inferior antibiosis effect of pure zinc series antibacterial agent and has high-efficiency, broad-spectrum and lasting antibiosis effect, as well as safe application and easy processing; the prepared composite material can be used as either an antibiosis coating directly or the masterbatch of the inorganic nano-antibiosis material of a polymer base and is applicable to the fields of food packaging, construction material, textiles, sanitary articles, daily article, household appliances, communication material and the like.
Owner:SOUTH CHINA UNIV OF TECH
Carbon network supported zinc oxide nanocrystalline composite material and preparation method and application thereof
InactiveCN104183837AReliable methodEasy to implementMaterial nanotechnologyCell electrodesZno nanocrystalsZinc nitrate
The invention relates to a carbon network supported zinc oxide nanocrystalline composite material and a preparation method and application thereof. A zinc-containing precursor is synthesized by an internal reflux method and is subjected to carbonization treatment at different temperatures in an inert atmosphere. The preparation method comprises the following steps: dissolving zinc nitrate in a mixed solution of oleic acid and oleylamine, and introducing the mixed solution into an inert atmosphere; removing residual moisture in the reactants and air in a system, raising the temperature of the system, and washing and drying a product, thereby obtaining the zinc-containing precursor; performing carbonization treatment in the inert atmosphere, thereby obtaining the carbon skeleton coated zinc oxide nanocrystalline composite material. According to the invention, a surfactant serves as a carbon source, a high-stability carbon network structure is obtained through carbonization, and zinc oxide nanocrystalline particles are uniformly inlaid in the carbon network. The method is easy to operate, is easily controlled and implemented in process and has an environment-friendly effect. The prepared ZnO / C composite material successfully overcomes the defect that zinc oxide is poor in cycle performance in the aspect of lithium ion battery application and has good application prospects.
Owner:ZHEJIANG UNIV
Preparation method of zinc aluminum silicate glass codoped with zinc oxide nanocrystals and rare-earth ions
The present invention discloses a preparation method of zinc aluminum silicate glass codoped with zinc oxide nanocrystals and rare-earth ions, which comprises the following steps of: firstly uniformly mixing zinc oxide powder, silica, alumina, potassium oxide and rare earth oxide in a mortar, melting at a high temperature, cooling the molten liquid to room temperature, and carrying out heat treatment at the temperature of 600-700 DEG C to obtain the zinc aluminum silicate glass codoped with zinc oxide nanocrystals and rare-earth ions. The preparation method provided by the invention has the advantages of simple process, low cost of raw materials, no need for special equipment and simple equipment, and the preparation process is performed in air atmosphere. The preparation method generates ZnO nanocrystals in a zinc aluminum silicate glass matrix by heat treatment for the first time; the generated nanocrystal has uniform particle sizes and diameter of about 10 nm, and changes the structure of the glass matrix; and the interaction between the generated ZnO nanocrystals and rare-earth ions helps to optimize the photoelectric properties of the optical glass.
Owner:ZHEJIANG UNIV
Electron transport layer, light emitting device and preparation method thereof
ActiveCN110600627AAffect performanceExtended service lifeSolid-state devicesSemiconductor/solid-state device manufacturingHole transport layerLight-emitting diode
The invention discloses an electron transport layer, a light emitting device and a preparation method thereof. The light-emitting device comprises a first electrode, an electron transport layer, a light emitting layer, an optional hole transport layer, an optional hole injection layer and a second electrode which are sequentially arranged, wherein the electron transport layer comprises a zinc oxide nanocrystalline film and a zinc oxide deposition film; the zinc oxide nanocrystalline thin film is adjacent to the first electrode, the zinc oxide deposition thin film is adjacent to the light emitting layer, the zinc oxide nanocrystalline thin film is made of a doped or undoped zinc oxide nanocrystalline material, and the zinc oxide deposition thin film is made of a doped or undoped zinc oxidebulk phase material. According to the light emitting device, the zinc oxide deposition film is added between the zinc oxide nanocrystalline film and the light emitting layer to serve as an interface layer, thereby protecting the performance of the light emitting device from being influenced by the interaction of the zinc oxide nanocrystalline and the light emitting material; moreover, the zinc oxide deposition film is a bulk phase material, so that the electrical stability is good, and the service life of the light emitting device is prolonged.
Owner:NANJING TECH CORP LTD
One-D nano zinc oxide and vacuum electric arc prepn. process
InactiveCN1834017AReduce consumptionShort discharge timeNanostructure manufactureZinc oxides/hydroxidesZno nanoparticlesCobalt
This invention relates to a method to prepare one-dimension nanosized zincum oxide. The one-dimension nanosized zincum oxide is a kind of white powder which is generated from the mixture of zincum oxide or zincum powder and catalyst powder after discharge. The catalyst is combined from one or over two species of iron, cobalt, nickel, tin, magnesium, manganese, copper, chromium, titanium, gold, silver or their oxides. The preparation method is that, a graphite block or metal block is taken as discharge cathode. A cavity is set in a graphite bar as discharge anode, and the mixed zincum oxide or zincum powder and catalyst are filled into the cavity set in the graphite bar. The preceding discharge anode and cathode are placed into a discharge cavity and discharge is carried out in a 300Torr~1atm mixed-air environment with a discharge current of 50~130A. After discharge, the white powder deposited on the inner wall of the discharge cavity is zincum oixde crystal whiskers. The preceding mixed air is the mixture of inert gas and oxygen, with an oxygen volume fraction of 10~50%.
Owner:SOUTHEAST UNIV
Method and device for in situ preparing zinc oxide nanometer crystal using coaxial oxygen transporting laser
InactiveCN1762822APromote generationEasy extractionPolycrystalline material growthZinc oxides/hydroxidesOptoelectronicsOxygen
The present invention relates to nanometer zinc oxide crystal preparing method and apparatus, and is especially one kind of in-situ laser method and apparatus for preparing nanometer zinc oxide crystal. The apparatus includes reaction furnace, infrared thermometer, observation window, work table, metal zinc plate, annular oxygen flow, laser beam, coaxial oxygen feeder, oxygen feeding hole and vacuum pump. The preparation principle of the present invention is that the continuous heat effect of the laser heats the zinc plate to over smelting point to form zinc vapor and the zinc vapor reacts with oxygen the coaxially conveyed oxygen to generate 1D, 2D and 3D nanometer zinc oxide crystal on the zinc plate as substrate in the naturally growth direction. By means of controlling the laser power, the laser spot diameter, the laser action time and the work stable, the heating area on the zinc plate may be controlled.
Owner:JIANGSU UNIV
HfLaO passivated zinc-oxide thin-film transistor with high field-effect mobility
InactiveUS20180342623A1Low mobilityLow moisture absorptionTransistorSemiconductor/solid-state device detailsSub thresholdZno nanocrystals
Improved thin film transistor device and method, comprising transparent multi-layer thin-film transistors (TFT) disposed over a flexible polyethylene naphthalate (PEN) substrate with a nano-crystalline ZnO channel layer, and a novel HfLaO passivation layer. This device, which may be made at room temperature, has a high field-effect mobility (μFE) of 345 cm2 / Vs, small sub-threshold slope (SS) of 103 mV / dec, high on-current / off-current (ION / IOFF) of 7×106, and a low drain-voltage (VD) of 2V for low power operation. Although prior art ZnO based TFT had unimpressive performance, use of the novel HfLaO passivation layer appears to greatly improve the performance of ZnO TFT by preventing trace levels of H2O from forming unwanted Zn—OH bonds, thus disrupting ZnO nanocrystals. At least some of the problems with prior ZnO TFT may be attributed to these Zn—OH bonds, which damage ZnO crystallinity, create charged scattering centers, and form potential barriers that degrade mobility.
Owner:NVMD TECH A CALIFORNIA CORP
Zinc-oxide nanocrystal composite photocatalyst for treating sewage and preparation method
InactiveCN108212183AWide spectral response rangeReduce chance of recombinationPhysical/chemical process catalystsWater/sewage treatment by irradiationSpectral responseZINC OXIDE EMULSION
The invention relates to the field of sewage treatment and discloses a zinc-oxide nanocrystal composite photocatalyst for treating sewage and a preparation method. The preparation method comprises thefollowing preparation processes: (1) adding zinc acetate into diethylene glycol, carrying out oil-bath heating and alcoholysis to generate zinc-oxide emulsion, and carrying out centrifugal demulsification to obtain zinc-oxide nanocrystal; (2) adding the zinc-oxide nanocrystal and hexadecyl trimethyl ammonium bromide into mixed liquid of ethylene glycol containing a selenium source and an antimonysource and water to carry out hydrothermal reaction, and obtaining the zinc-oxide nanocrystal-antimony selenide photocatalyst. Compared with the traditional photocatalyst, the prepared composite photocatalyst has the beneficial effects that the spectral response range is wide, the adsorbing efficiency for visible lights is improved, pollutants in sewage can be degraded in an efficient and catalytic manner, the process is simple, the operation is convenient, the production cost and the use cost are low and large-scale promotion and preparation can be achieved.
Owner:CHENDU NEW KELI CHEM SCI CO LTD
Use of ZnO Nanocrystals For Imaging and Therapy
InactiveUS20090114859A1X-ray/infra-red processesMaterial analysis by optical meansOptical propertyZno nanocrystals
The present invention provides a method for imaging a biological specimen using non-linear optical properties of certain materials. The method comprises the steps of providing an aqueous dispersion of ZnO nanocrystals; contacting a biological specimen with an aqueous dispersion comprising ZnO nanocrystals; exposing the biological specimen to input electromagnetic radiation having a wavelength of from 600 to 1500 nm; recording the nonlinear output electromagnetic radiation; and generating an image of the biological specimen based on the nonlinear output radiation.
Owner:THE RES FOUND OF STATE UNIV OF NEW YORK
Zinc oxide nanocrystalline electron transport layer preparation method thereof and electronic device
ActiveCN110970579ALower turn-on voltageSolution to short lifeMaterial nanotechnologySolid-state devicesElectron injectionZno nanocrystals
The invention discloses a zinc oxide nanocrystalline electron transport layer and a preparation method thereof and an electronic device. The preparation method of the zinc oxide nanocrystalline electron transport layer comprises the following steps: after a zinc oxide nanocrystalline solution is coated, standing the coating for a period of time in an environment of which the humidity is greater than 0%. In the present invention, after the zinc oxide nanocrystalline solution is coated and before annealing treatment is carried out, the zinc oxide nanocrystalline coating is allowed to stand for aperiod of time in an environment with a certain humidity, and a zinc oxide nanocrystalline film is slowly crystallized under the action of water vapor, so the improvement of the conductivity of the film layer and the enhancement of electron injection are facilitated, and the reduction of the turn-on voltage of related electronic devices is facilitated; and the zinc oxide nanocrystalline film is slowly crystallized under the action of water vapor, so that the interface bonding force between the electron transport layer and the adjacent functional layer is enhanced, and the service life of related electronic devices is prolonged.
Owner:NANJING TECH CORP LTD
Haze-reduction paint for building wall surfaces and preparation method
ActiveCN109897575ALarger than surfaceLarge hole volumeCovering/liningsNon-macromolecular adhesive additivesAcrylic resinSorbent
The invention provides haze-reduction paint for building wall surfaces and a preparation method. The method includes the steps: firstly, preparing pseudo-boehmite sol coated tourmaline loaded zinc oxide nano-crystalline composite spherical fine particles to serve as photocatalysts; secondly, preparing slurry from the particles, nano-silicon dioxide, nano-wollastonite, super-fine talcum powder, defoaming agents, dispersing agents, coalescing agents, preservatives and water; finally, matching the slurry, organosilicone acrylic resin and thickening agents to form the haze-reduction paint for thebuilding wall surfaces. By the aid of a pseudo-boehmite sol coated tourmaline loaded zinc oxide nano-crystalline composite material with the advantages of large specific surface, high pore volume andthe like, outward flow of catalytic active matters is avoided, the haze-reduction paint is provided with a adsorbent with excellent performance, the paint and the zinc oxide nano-crystalline are compound, high adsorption capacity of the adsorbent and visible light drive photocatalysis to degrade cationic organic pollutants, air quality is improved, the paint has remarkable effects on control of large-area haze, and further, and the paint is simple in preparation process, low in raw material cost and suitable for large-scale popularization.
Owner:中烯新材料(福建)股份有限公司
Preparation method of magnesium-silver co-doped zinc oxide nanocrystals
InactiveCN102154696AIncrease incorporationEnhanced UV LuminescencePolycrystalline material growthFrom normal temperature solutionsZno nanocrystalsZno nanoparticles
The invention relates to a preparation method of magnesium-silver co-doped zinc oxide nanocrystals, belonging to the technical field of composite nanocrystalline materials. A product provided by the invention is a magnesium-silver co-doped zinc oxide nanorod. The preparation method comprises the following steps of: firstly, preparing Zn<2+>:Ag<+>:Mg<2+> microemulsion and NaOH microemulsion by using a reversed phase microemulsion system of cyclohexane / triton X-100 / n-hexyl alcohol / aqueous solution; mixing and reacting the Zn<2+>:Ag<+>:Mg<2+> microemulsion with the NaOH microemulsion for a certain period of time to generate an Ag<+> / Mg<2+>-doped [Zn(OH)4]2-precusor; hydrolyzing at the temperature of 140 DEG C for 5 hours; and washing and drying to obtain the magnesium-silver co-doped zinc oxide nanocrystals. In the preparation method, ZnO:Ag-Mg nanoparticles are prepared by using a microemulsion method, Mg and Ag are taken as an active donor and an active acceptor respectively, the active donor Mg element and the active acceptor Ag element are co-doped into ZnO, the doping amount of Ag in ZnO is increased in the presence of the donor, and a lower Ag acceptor energy level is obtained,so that good p type ZnO nanoparticles are obtained.
Owner:SHANGHAI UNIV
A kind of perovskite solar cell and preparation method thereof
ActiveCN106340590BImprove stabilityImprove long-term stabilityFinal product manufactureSolid-state devicesZno nanocrystalsHole transport layer
The invention relates to a perovskite solar cell and a preparation method thereof, comprising: a transparent conductive substrate, a hole transport layer formed sequentially on the transparent conductive substrate, a perovskite light absorbing layer, and a hydrophobic long-chain high Molecular layer, an electron transport layer composed of zinc oxide nanocrystals filled in the mesh of the hydrophobic long-chain polymer layer, and a back electrode, wherein the hydrophobic long-chain polymer layer is polytetrafluoroethylene, trifluoro At least one of ethylene and vinylidene fluoride. The present invention proposes for the first time that hydrophobic long-chain polymers are introduced into the preparation of perovskite solar cells as hydrophobic materials to improve the stability of perovskite solar cells.
Owner:江苏先进无机材料研究院
ZnO functional nano material and preparation method thereof
InactiveCN111302385AHigh UV absorption propertiesHigh purityMaterial nanotechnologyZinc oxides/hydroxidesMethanol waterZno nanocrystals
The invention discloses a ZnO functional nano material and a preparation method thereof. The preparation method comprises the following steps of heating a methanol-water solution of zinc acetate to 50DEG C to form a homogeneous solution, dropwise adding the solution to a methanol solution of sodium hydroxide, enabling the pH in the obtained solution to be greater than or equal to 9 and less thanor equal to 11, raising the temperature to 55 DEG C in a sealed reaction container, reacting to obtain a methanol suspension of ZnO, and carrying out post-treatment to obtain zinc oxide nanocrystalline powder with strong ultraviolet light absorption, the grain size of the zinc oxide nanocrystalline powder being 10-12 nm. The method provided by the invention can be used for preparing the ZnO functional nano material with strong ultraviolet light absorption at near room temperature, and can be used for photocatalysis and nano bioengineering.
Owner:XIJING UNIV
Water polyurethane base flower cluster-shaped zinc oxide nanometer whisker antibiotic composite material, preparation method and use thereof
InactiveCN101397401BOvercoming the problem of poor antibacterial effectEasy to prepareUltrasonic dispersionPolymer
The invention relates to a WBPU base cluster-shaped zinc oxide nano-crystal whisker antibiosis composite material and a preparation method and application thereof. In terms of parts by weight, the composite material of the invention contains 100 parts by weight of WBPU substrate and 0.3-2 parts by weight of cluster-shaped zinc oxide nano-crystal whisker antibacterial agent which undergoes ultrasonic dispersion treatment for preparing the composite material by using the blending of an ultrasonic auxiliary solution. The invention has simple preparation method and small addition amount, overcomes the problem of the inferior antibiosis effect of pure zinc series antibacterial agent and has high-efficiency, broad-spectrum and lasting antibiosis effect, as well as safe application and easy processing; the prepared composite material can be used as either an antibiosis coating directly or the masterbatch of the inorganic nano-antibiosis material of a polymer base and is applicable to the fields of food packaging, construction material, textiles, sanitary articles, daily article, household appliances, communication material and the like.
Owner:SOUTH CHINA UNIV OF TECH
Preparation method of electron transport layer and light emitting diode
PendingCN114695815ALow dielectric constantLow densityMaterial nanotechnologySolid-state devicesChemical physicsZno nanocrystals
The invention relates to the technical field of electron transport materials, and provides a preparation method of an electron transport layer and a light emitting diode. According to the invention, the titanium dioxide nanocrystal is used as the material of the first electron transport layer, and the obtained first electron transport layer and the second electron transport layer formed by the zinc oxide nanocrystal are laminated to obtain the electron transport layer, so that the electron transport layer has relatively high conductivity; in addition, the problem that a zinc oxide electron transport layer limits materials, preparation conditions and dissolving solvents of other layer structures of the device is solved, structural optimization and preparation method optimization of the device are facilitated, and the obtained light-emitting diode has better overall performance.
Owner:TCL CORPORATION
Low-temperature hydrothermal method for manufacturing zinc oxide nanocrystalline whisker
InactiveCN100591810CAvoid impuritiesAvoid structurePolycrystalline material growthFrom normal temperature solutionsZno nanocrystalsGlycerol
The invention discloses a low temperature water heating preparing method of zinc oxide nanometer whisker, and the steps are as follows: 1) Zn salt and alkali are prepared into uniform Zn(OH)4<2-> water solution; 2) the Zn(OH)4<2-> water solution is added into the mixed solvent of glycerol and water, and then polyacrylamide is added into the solvent, and the solvent is heated and magnetically stirred at 80 to 100 DEG C until the matter is dissolved completely, then the mixture is put in a high-pressure reactor and sealed; the reaction is done at 170 to 190 DEG C, and after the reaction is finished, the obtained matter is cooled to the room temperature, and then the product is washed repeatedly by de-ionized water and is done with vacuum drying at 80 to 100 DEG C. The preparing method of theinvention has the advantages of simple operation, low cost, removing the processes of high temperature sintering and ball milling, saving energy, being beneficial to environmental protection and avoiding powder hard agglomeration, impurity and structural defect.
Owner:CHINA JILIANG UNIV
Copper-nickel-zinc oxide composite nanocrystalline photocatalyst and its preparation method and application
ActiveCN105664951BLow costMagnetically controllableWater/sewage treatment by irradiationWater treatment compoundsOrganic dyeZno nanocrystals
Copper-nickel-zinc oxide composite nanocrystalline photocatalyst and preparation method and application thereof, involving nanometer photocatalysts. The copper-nickel-zinc oxide composite nanocrystal photocatalyst uses a copper-nickel bimetal as a core, and the zinc oxide nanocrystal is completely or partially coated outside the core, forming a stable heterogeneous interface through epitaxial growth, and forming a composite nanocrystal. Preparation method: Add metal precursor, alkylamine or alkylamine and organic solvent mixture, and surfactant into a reaction vessel and mix and react to obtain reaction solution A; add zinc oxide precursor, alkylamine or alkylamine into another container. The mixture of alkyl amine and organic solvent is heated to react to obtain reaction liquid B. Inject reaction liquid B into reaction liquid A, then heat it up to 190-300°C, keep it for 10-120 minutes, then cool to room temperature, and mix the product with an organic solvent. The product is obtained after washing with liquid, centrifugation, and vacuum drying. Photocatalysts can be used in the preparation of photocatalytic degradation agents for organic dyes.
Owner:XIAMEN UNIV
Electron transport layer, light emitting device and preparation method thereof
ActiveCN110600627BAffect performanceExtended service lifeSolid-state devicesSemiconductor/solid-state device manufacturingZno nanocrystalsHole transport layer
Owner:NANJING TECH CORP LTD
Catalyst for hydrolysis hydrogen production photocatalytic reaction and preparation method thereof
PendingCN114849681AImprove performanceImprove cycle stabilityEnergy inputCatalyst activation/preparationPhotocatalytic reactionPtru catalyst
The invention relates to a catalyst for hydrolysis hydrogen production photocatalytic reaction and a preparation method thereof. The invention relates to a preparation method of a catalyst for hydrolysis hydrogen production photocatalytic reaction, which comprises the following steps: dispersing ZnO nanorods into a solvent, adding TiCl4 and water, and carrying out hydrothermal treatment, washing and drying to obtain a ZnO-coated TiO2 (B) nanoflower catalyst, namely the catalyst. According to the catalyst for the photocatalytic reaction for hydrolysis hydrogen production and the preparation method of the catalyst, ZnO nanocrystals are embedded into TiO2 (B) crystal lattices, so that the stability of photocatalytic hydrogen production can be improved.
Owner:SHIHEZI UNIVERSITY
Preparation method of zinc aluminum silicate glass codoped with zinc oxide nanocrystals and rare-earth ions
The present invention discloses a preparation method of zinc aluminum silicate glass codoped with zinc oxide nanocrystals and rare-earth ions, which comprises the following steps of: firstly uniformly mixing zinc oxide powder, silica, alumina, potassium oxide and rare earth oxide in a mortar, melting at a high temperature, cooling the molten liquid to room temperature, and carrying out heat treatment at the temperature of 600-700 DEG C to obtain the zinc aluminum silicate glass codoped with zinc oxide nanocrystals and rare-earth ions. The preparation method provided by the invention has the advantages of simple process, low cost of raw materials, no need for special equipment and simple equipment, and the preparation process is performed in air atmosphere. The preparation method generates ZnO nanocrystals in a zinc aluminum silicate glass matrix by heat treatment for the first time; the generated nanocrystal has uniform particle sizes and diameter of about 10 nm, and changes the structure of the glass matrix; and the interaction between the generated ZnO nanocrystals and rare-earth ions helps to optimize the photoelectric properties of the optical glass.
Owner:ZHEJIANG UNIV
Preparation method of magnesium-silver co-doped zinc oxide nanocrystals
InactiveCN102154696BHigh fluorescence intensityReduce defectsPolycrystalline material growthFrom normal temperature solutionsZno nanocrystalsZno nanoparticles
The invention relates to a preparation method of magnesium-silver co-doped zinc oxide nanocrystals, belonging to the technical field of composite nanocrystalline materials. A product provided by the invention is a magnesium-silver co-doped zinc oxide nanorod. The preparation method comprises the following steps of: firstly, preparing Zn<2+>:Ag<+>:Mg<2+> microemulsion and NaOH microemulsion by using a reversed phase microemulsion system of cyclohexane / triton X-100 / n-hexyl alcohol / aqueous solution; mixing and reacting the Zn<2+>:Ag<+>:Mg<2+> microemulsion with the NaOH microemulsion for a certain period of time to generate an Ag<+> / Mg<2+>-doped [Zn(OH)4]2-precusor; hydrolyzing at the temperature of 140 DEG C for 5 hours; and washing and drying to obtain the magnesium-silver co-doped zinc oxide nanocrystals. In the preparation method, ZnO:Ag-Mg nanoparticles are prepared by using a microemulsion method, Mg and Ag are taken as an active donor and an active acceptor respectively, the active donor Mg element and the active acceptor Ag element are co-doped into ZnO, the doping amount of Ag in ZnO is increased in the presence of the donor, and a lower Ag acceptor energy level is obtained,so that good p type ZnO nanoparticles are obtained.
Owner:SHANGHAI UNIV
A kind of preparation method of zinc oxide nanocrystal
ActiveCN108128800BHigh crystal contentIncrease the areaZinc oxides/hydroxidesChemical industryZno nanocrystals
The invention belongs to the field of chemical industry, and in particular relates to a preparation method of zinc oxide nano crystals, thereby improving the photocatalytic activity of zinc oxide. First prepare TEMPO oxidized cellulose, then graft polymers containing carboxyl groups, sulfonic acid groups or epoxy groups by heterogeneous free radical polymerization to prepare modified TEMPO oxidized cellulose, and then use modified TEMPO oxidized cellulose The element is used as a template, and zinc acetate, the precursor of zinc oxide, is adsorbed, and a cellulose / zinc oxide composite is obtained under hydrothermal reaction, and then the template is removed by calcination, and finally zinc oxide nanocrystals are obtained. The ZnO nanocrystals prepared by the invention can replace the existing ZnO photocatalytic materials, have the characteristics of high wurtzite crystal content, large specific surface area and large pore volume, show good photocatalytic performance, and the preparation process is simple, It is an environment-friendly material.
Owner:SHANDONG HUATAI PAPER
Method and device for preparing zinc oxide nano-crystal based on non ionization radiation
Owner:JIANGSU UNIV
Preparation method of doped zinc oxide nanocrystal, electron transport layer, light-emitting device
ActiveCN110526277BIncrease the doping concentrationIncreased luminosityMaterial nanotechnologyZinc oxides/hydroxidesZno nanocrystalsPhysical chemistry
The invention discloses a preparation method of doped zinc oxide nanocrystals, an electron transport layer and a light-emitting device. Wherein, the preparation method of doped zinc oxide nanocrystals includes the following steps: S1, mixing zinc salt, doped metal salt and organic amine in a solvent to obtain a mixed solution, and the amount of zinc element in the zinc salt is the same as that in the doped metal salt. The ratio of the amount of the metal element is (100:1)~(1.5:1), and the organic amine is suitable for forming a complex with the doped metal salt; S2, adding alkali to the mixed solution in step S1 to react, and the reaction Then a solution containing doped zinc oxide nanocrystals is obtained. The preparation of doped zinc oxide nanocrystals by the method provided by the invention can break through the upper limit of the doping amount of the existing doping metal in the zinc oxide nanocrystals, and significantly increase the doping amount of the doping metal in the doped zinc oxide nanocrystals , which is conducive to giving full play to the beneficial effects of doping metals.
Owner:NANJING TECH CORP LTD
A kind of optoelectronic device and its preparation method
ActiveCN113497191BGood optical stabilityImprove stabilityFinal product manufactureSolid-state devicesZno nanocrystalsElectron transport layer
The invention provides a photoelectric device and a preparation method thereof. The photoelectric device comprises a substrate, a first electron transport layer and a second electron transport layer stacked in sequence, and the material of the first electron transport layer is the first zinc oxide nanocrystal, The material of the second electron transport layer is a second zinc oxide nanocrystal, the first zinc oxide nanocrystal has a first size, and the first zinc oxide nanocrystal has a first defect state light emission wavelength or does not exist a defect state light emission, which can suppress the substrate Exciton quenching at the interface with the first electron transport layer; the second zinc oxide nanocrystal has a second size, and the second zinc oxide nanocrystal has a second defect state light emission wavelength or does not exist defect state light emission, the first size and the second The two dimensions and the light emission wavelength of the first defect state and the second defect state light emission wavelength are all different, and the conductivity of the second zinc oxide nanocrystal is greater than that of the first zinc oxide nanocrystal. The photoelectric device of the present application has high luminous efficiency, long service life, stability in placement and operation.
Owner:ZHEJIANG UNIV +1
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