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53results about How to "Paramagnetic" patented technology
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Nano carbon material reinforced epoxy resin composite material and preparation method thereof
InactiveCN102675830AImprove machinabilityTake full advantage of enhanced featuresIonEpoxy resin composite
The invention discloses a preparation method of nano carbon material reinforced epoxy resin composite material, which comprises the steps of: reacting nitrogen and free radicals with ferric iron salt, then reacting with polyester type diol to form oligomer, then reacting with diisocyanate to form isocyanate group-terminated oligomer, carrying out surface modification on nano carbon particles with the oligome, then blending with epoxy resin and curing under the action of magnetic field. According to the epoxy resin composite material, reactive functional groups are introduced to the surface of the nano carbon material and have excellent dispersibility in epoxy resin aggregate, so that the processability of the nano carbon material is greatly improved; and at the same time, the nitrogen and oxygen free radicals are connected by iron ion, so that the nano carbon particles have certain paramagnetism and can realize oriented arrangement in epoxy resin in lower external magnetic field, thereby sufficiently exerting the reinforcing characteristic of the nano carbon material.
Owner:HENAN UNIV OF SCI & TECH
Magnetic nano silver antibacterial material and preparation method thereof
InactiveCN101664044AImproved antioxidant and anti-dissolution capacityGood for magnetic retentionBiocideDisinfectantsNanometreMagnetite Nanoparticles
The invention provides a magnetic nano silver antibacterial material for sterilization treatment in medical treatment and / or drinking water and a preparation method thereof. An antibacterial agent provided by the invention takes magnetic nanoparticles coated with silica gel as a core and inlaid with antibacterial particles on the outer layer, is preferably a Fe3O4 magnetic nano antibacterial material which is inlaid with silver nanoparticles and coated with silica gel. The antibacterial agent simultaneously has large special surface area of nano material, magnetic separation capacity and magnetic target of magnetic material, dispersant effect of a silica gel coating layer, protection action on the core and strong antibacterial ability of nano silver. In addition, the antibacterial agent issimple to prepare and convenient to operate and can realize directional sterilization, thereby having wide application prospect in medical care and food sanitation sterilization treatment.
Owner:RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
Preparation method of novel magnetic chitosan/sodium alginate composite gel balls
InactiveCN108514865AParamagneticImprove adsorption capacityOther chemical processesAlkali metal oxides/hydroxidesHydrogenParamagnetism
The invention discloses a preparation method of novel magnetic chitosan / sodium alginate composite gel balls. The preparation method comprises the following steps: adding an FeCl3 solution and an FeCl2solution into a beaker; stirring and adding ammonia water until a lot of black sediment is separated out; after carrying out magnetic separation, removing supernatant; then washing the black sedimentwith ultrapure water; repeating the steps for a plurality of times until the pH (Potential of Hydrogen) of the supernatant is nearly neutral; collecting all the black sediment and re-suspending on the ultrapure water to obtain Fe3O4 nano magnetic fluid; then dissolving CaCl2 into the ultrapure water; dissolving sodium alginate into the ultrapure water; adding chitosan powder and the Fe3O4 nano magnetic fluid; stirring and carrying out ultrasonic treatment for 10 to 15min; slowly dropwise adding a mixed solution into a CaCl2 solution at a slow speed by utilizing a needle tube of an injection syringe and immersing and ageing for 3 to 5h; washing to obtain the novel magnetic chitosan / sodium alginate composite gel balls. The preparation method has a simple preparation process and the preparedcomposite gel balls have paramagnetism and good adsorption performance and thermal stability.
Owner:QIDONG XIANGRUI CONSTR CO LTD
Magnetic mesoporous carbon-supported cobalt catalyst and preparation method and application of catalyst
InactiveCN104667930AReduce dosageIncrease spawn rateMetal/metal-oxides/metal-hydroxide catalystsWater/sewage treatment by oxidationPtru catalystPhysical chemistry
The invention discloses a magnetic mesoporous carbon-supported cobalt catalyst and a preparation method and application of the catalyst. The magnetic mesoporous carbon-supported cobalt catalyst takes magnetic mesoporous carbon as a carrier, a cobalt ion is fixed into the magnetic mesoporous carbon through an isopyknic immersion method, and the weight percent of cobalt is 2.5%-4.5%. The preparation method particularly comprises the steps of preparing the magnetic mesoporous carbon by adopting a template method; dripping ultrapure water to the magnetic mesoporous carbon to obtain saturated water-absorbing capacity of the magnetic mesoporous carbon; then dripping a cobalt nitrate solution with saturated water-absorbing volume to the magnetic mesoporous carbon, immersing for 24-36 hours to obtain the magnetic mesoporous carbon immersed with cobalt; drying the magnetic mesoporous carbon immersed with the cobalt, grinding the dried magnetic mesoporous carbon into powder, and calcining to complete the preparation of the magnetic mesoporous carbon-supported cobalt catalyst. The magnetic mesoporous carbon-supported cobalt catalyst provided by the invention adopts a simple preparation method, can be separated by using a magnet after being used and can be repeatedly used, has high degradation efficiency on an azo dye and has no secondary pollution and can be used for degrading the azo dye.
Owner:CHANGSHA UNIVERSITY
Preparation method of magnetic nanometer carrier for immobilized enzyme
InactiveCN104342431AImprove stabilityStrong cycle timesOn/in organic carrierOn/in inorganic carrierAlkaline earth metalBiocompatibility Testing
The invention discloses a preparation method of a magnetic nanometer carrier for immobilized enzyme. The carrier takes nano Fe3O4 as a core and alginic acid alkaline-earth metal salt as a shell; the carrier has the characteristics of being small in particle size, uniform in particle, good in monodispersity, large in specific surface area, good in chemical stability, strong in load capacity, good in biocompatibility, strong in magnetic response and the like. The preparation method of the magnetic nanometer carrier comprises the following steps: (1) preparing nano Fe3O4 in a reverse microemulsion system; (2) adding a sodium alginate solution to a reaction system, mixing evenly, and then adding an alkaline-earth metal salt solution; (3) after reaction is ended, obtaining the magnetic nanometer carrier by separation and purification. The preparation method of the magnetic nanometer carrier related to the invention is mild in reaction condition, simple in preparation, and controllable in carrier particle size and pore structure in the preparation process.
Owner:ZUNYI MEDICAL UNIVERSITY
Magnetic nanocomposite based on two-dimensional stratified material magadiite, and preparation method and application thereof
InactiveCN108579664ALarge specific surface areaParamagneticOther chemical processesWater treatment compoundsSorbentHazardous substance
The invention discloses a magnetic nanocomposite based on a two-dimensional stratified material magadiite, and a preparation method and application thereof. According to the method, the magnetic nanocomposite based on the two-dimensional stratified material magadiite is compounded at one step based on the coprecipitation method, and ferroferric oxides in the compounded magnetic nanocomposite are loaded among layers and on the surface of the magadiite evenly, so that the problems that ferroferric oxide nanoparticles are easy to agglomerate and the magadiite serving as an adsorbent is difficultto separate are solved, and the magnetic nanocomposite has paramagnetism and biological compatibility as the ferroferric oxides as well as ion exchange property and adsorbability as the magadiite. Themagnetic nanocomposite, and the preparation method and the application thereof have the advantage of simple process, easiness in operation, non-existence of harmful substances in raw materials, environment protection, energy conservation, low cost and easiness in industrial production. The magnetic nanocomposite based on the two-dimensional stratified material magadiite is applied to remove organic dye in water pollutants, have good adsorption performance and can be separated quickly under the action of an external magnetic field.
Owner:SOUTH CHINA UNIV OF TECH
Preparation method of up-conversion fluorescence/paramagnetic difunctional nanocrystal
InactiveCN102504820AShort reaction timeImprove efficiencyLuminescent compositionsDispersityRare-earth element
The invention discloses a preparation method of up-conversion fluorescence / paramagnetic difunctional nanocrystal, relating to a luminescent nanometer material. A quick and environment-friendly preparation method of up-conversion fluorescence / paramagnetic difunctional nanocrystal is provided, which comprises the following steps: dissolving rare-earth oxide in a determined molar ratio into hydrochloric acid or nitric acid solution to obtain chloride or nitrate solution mixed with various rare-earth elements; mixing sodium hydroxide, oleic acid, ethanol and water; fully stirring the mixture to obtain a homogeneous solution; adding rare-earth chloride or nitrate solution and sodium fluoride water solution, and fully mixing to obtain reaction precursor; and performing microwave synthesis of the reaction precursor solution, and after the reaction stops, centrifugating, washing and drying the product to obtain up-conversion fluorescence / paramagnetic difunctional nanocrystal. The preparation method well combines the ethanol / water solvent system and the microwave heating, is green and environment-friendly, has simple process, is easy to obtain cheap raw materials and has high efficiency; the product has regular shape, uniform size and good dispersity and has up-conversion fluorescence and paramagnetic properties.
Owner:XIAMEN UNIV
Method for preparing FePt:RE amorphous alloy nano material mixed with rare earth elements
InactiveCN101538691AAmorphous tendency increasesImprove thermal stabilityRare-earth elementFluorescence
The invention discloses a method for preparing FePt:RE amorphous alloy nano material mixed with rare earth elements, platinum-containing inorganic salt / platinum-containing composition, iron-containing inorganic salt / iron-containing composition and water soluble salt of RE(RE=Eu, Dy, Ce) are used as the reaction precursor, the reaction precursor, organic solvent and phase transfer catalyst crown ether are put into a high pressure kettle, and the needed product is obtained through reaction by making use of the phase transfer among the reactants and the coreduction of the reaction precursor and taking oleic acid as the stabilizer. Based on the invention, alloy nano particles of FePt:Ce, FePt:Dy and FePt:Eu with the particle diameter being 3-5nm can be synthesized, the synthesized alloy nano particles have chemical out-of sequence fcc structure, the amorphous state inclination of the alloy is reinforced by mixing Eu, and the coercive force is greatly enhanced. The alloy nano particles of FePt:Ce and FePt:Dy are processed by backfire at 600 DEG C, the structure thereof carries out phase variation on sequenced L10. At the same time, with the enhanced coercive force, the thermal stability of the FePt:Eu alloy is reinforced by mixing Eu, thus having certain phase variation inhibition effect; in addition, the FePt alloy nano particles are caused to have fluorescence by mixing rare earth elements.
Owner:TONGJI UNIV
Micro-arc oxidation preparation method of magnetic TiO2 bioactive coating
ActiveCN107119304AMagnetic hasGuaranteed binding effectSurface reaction electrolytic coatingPharmaceutical delivery mechanismPlasma electrolytic oxidationMicro arc oxidation
The invention discloses a micro-arc oxidation preparation method of a magnetic TiO2 bioactive coating. In an air environment, an electrolytic solution containing calcium salt, phosphor salt and molysite is taken, a pH value of the electrolytic solution is adjusted to be 5.0-5.3, titanium or a titanium alloy is taken as an anode, stainless steel is taken as a cathode, and titanium or the titanium alloy is subjected to micro-arc oxidation treatment for 1-8min by adopting a pulsed power supply, with the temperature of the electrolytic solution being kept at 5-25 DEG C, thus the magnetic TiO2 bioactive coating is generated on a surface layer of titanium or the titanium alloy. The magnetic TiO2 coating having magnetism (Ms being 0.2696-1.101emu / g) and good bioactivity can be prepared with the adoption of the micro-arc oxidation preparation method.
Owner:XI AN JIAOTONG UNIV
Magnetic electrode small-particle-size hydroxide ion generator
The invention relates to a magnetic electrode small-particle-size hydroxide ion generator. The magnetic electrode small-particle-size hydroxide ion generator comprises a raw material air supply channel, a cathode insulation fixation plate, a tunnel cylinder and an anode insulation fixation plate, wherein the cathode insulation fixation plate, the tunnel cylinder and the anode insulation fixation plate form a sealing cavity, the raw material air supply channel passes through the cathode insulation fixation plate and communicates with a cathode selection network inside the tunnel cylinder through a cathode conductive ring, the other end of the cathode selection network is connected with one end of an anode selection network, the other end of the anode selection network is fixed on the anode insulation fixation plate, an anode discharge needle is also fixed on the anode insulation fixation plate, the anode discharge needle is connected with a pulse high-frequency discharger, and the top portion of the tunnel cylinder is provided with a hydroxide ion air channel. Small-particle-size air negative ions prepared by use of the generator are widely applied, and since a prepared gas contains numerous negative hydrogen, oxygen ions and free electrons and is segmented and magnetized into small particle sizes, the magnetic electrode small-particle-size hydroxide ion generator can be widely applied to a health care industry, a medical industry and industrial combustion and machine combustion industries.
Owner:ZIBO S & N MAGNET MFG
Photo-catalytic synergistic magnetic separation sewage treatment device and method
PendingCN109467230ALarge specific surface areaParamagneticSludge treatment by de-watering/drying/thickeningWater/sewage treatment by irradiationPhotocatalytic reactionMagnetic media
The invention discloses a photo-catalytic synergistic magnetic separation sewage treatment device and method. The photo-catalytic synergistic magnetic separation sewage treatment method comprises photo-catalytic reaction, micro-flocculation, disk magnetic separation, magnetic medium circulation and the like; an ultraviolet lamp group is arranged inside a photo-catalytic reactor; sewage enters froma water inlet pipe of the reactor; a magnetic photo-catalyst reacts with pollutants in the sewage under the irradiation of ultraviolet light and enters a micro-flocculation pool after photo-catalyticreaction, so that impurities in wastewater are attached to the surface of a magnetic medium and are removed by a fixed slag scraping device under the action of the magnetic force of a disk drive, andthe water purifying purpose is achieved. The photo-catalytic synergistic magnetic separation sewage treatment device and method disclosed by the invention have the benefits that the pollutants in thesewage are effectively removed under the actions of photo-catalysis, flocculation, a magnetic field and the like; the magnetic photo-catalyst can also be recovered and has a wide market application prospect; the magnetic medium, namely 'laterite', can achieve the purpose of treating wastes with wastes; the fixed slag scraping device is adopted for removing slag and has the advantages that the cost is low, a magnetic disk selects a permanent Rufe Boron magnet with extremely-high magnetic property, and the like compared with a traditional slag discharge device.
Owner:中科天龙(厦门)环保股份有限公司
Preparation method and application of magnetic one-dimensional chain-shaped nano composite
ActiveCN109935430AEasy to operateSuitable for industrial mass productionMagnetic materialsMicrosphereParamagnetism
The invention discloses a preparation method of a magnetic one-dimensional chain-shaped nano composite. The method comprises preparation of Fe3O4 nano microspheres, preparation of Fe3O4@SiO2@PDA-Ni2+and preparation of Fe3O4@SiO2@C / Ni. The Fe3O4@SiO2@PDA-Ni<2+> is prepared by adding 80 to 120 mg of Fe3O4 nano microspheres into a mixed solvent composed of ethanol and water, adding ammonia water, placing the mixture in a magnetic field, stirring the mixture, adding ethyl orthosilicate, stirring the mixture to obtain a mixture A; mixing and dissolving 8 to 20 mg of dopamine and 30 to 40 mg of Nisalt in an aqueous solution of ethanol to obtain a mixture B, then adding the mixture B to the mixture A, stirring the mixture in the magnetic field, and performing washing and drying. The magnetic one-dimensional chain-shaped nano composite has a simple preparation process and is suitable for industrial mass production. The magnetic one-dimensional chain-shaped nano composite has paramagnetism, can be magnetically separated, can be recycled, can be used for catalytic degradation of an aromatic nitro group dyes, and can also be used for the enrichment, purification and separation of proteins.
Owner:HUNAN INSTITUTE OF SCIENCE AND TECHNOLOGY
Method for preparing magnetized and hydroformyled sheep red blood cell
The invention discloses a method for preparing a magnetized and hydroformyled sheep red blood cell. The method comprises the following steps of: preparing nano magnetic beads; preparing a hydroformyled sheep red blood cell; preparing a magnetized and hydroformyled sheep red blood cell; coating protein on the magnetized and hydroformyled sheep red blood cell; detecting a sample; and observing the result. The prepared magnetized and hydroformyled sheep red blood cell can be used as an indicator cell of an agglutination test, a carrier, enzyme and a chemiluminescence matter of an antigen antibody agglutination test, or a carrier detected in a fluorescent material marking test. The magnetized and hydroformyled sheep red blood cell prepared by the method is long in retention period, simultaneously has paramagnetism, can achieve rapid aggregation and redispersion, avoids complicated centrifuge processes in the traditional agglutination test, and can be used for preparing artificial granular antigen antibodies with uniform sizes; coating and detection reaction are carried out in a uniform phase after a solid-phase carrier is replaced; and the method is full in action, high in sensitivity, low in cost than an elisa plate, and is mainly applied to a screening or quantitative detection test of a special red blood cell antibody and other soluble antigen antibodies.
Owner:SUZHOU GUOKE MEDICAL TECH DEV CO LTD
Power distribution cabinet with self-extinguishing function
InactiveCN111799672AIncrease concentrationParamagneticSubstation/switching arrangement casingsFire rescueEngineeringFan blade
The invention discloses a power distribution cabinet with a self-extinguishing function. The cabinet comprises a cabinet body, a liquid storage cavity is formed in the side wall of the cabinet body; the top in the cabinet body is rotatably connected with a plurality of fan blades through a rotating shaft, the top in the liquid storage cavity is connected with a gas ejector pipe, a pressure releasevalve is installed in the gas ejector pipe, the end, away from the inner wall of the liquid storage cavity, of the gas ejector pipe is right opposite to blades of the fan blades, and the bottom and the inner top in the cabinet body are symmetrically and fixedly connected with two electromagnetic plates with opposite poles. Carbon dioxide gas generated by heating a sodium bicarbonate solution is sprayed out from the gas ejector pipe; the fan blades are driven to rotate quickly while the concentration of carbon dioxide in the cabinet body is increased; due to the fact that the oxygen has the paramagnetism, the oxygen in the cabinet body moves towards the upper half portion of the cabinet body, the concentration of the oxygen in the lower half portion of the cabinet body is reduced, and fireon electronic elements located on the lower half portion of the cabinet body is restrained.
Owner:刘晓芳
Double functional photochromism compound with stable nitrogen-oxygen free radical group and spiro oxazinyl and synthetic method and use thereof
InactiveCN101012371AParamagneticHas photochromic propertiesOrganic chemistryElectronic switchingHalogenHydrogen
The invention discloses a dysfunctional photoproduced color bleeding compound and synthesizing method and application with stable nitrogen-oxygen free radical and spiral oxazine radical, which is characterized by the following: adopting substituted 9'-hydroxy indole oxazine and stable nitrogen-oxygen free radical as raw material; obtaining the product with structural formul as right formula (R1 is C1-C18 alkyl; R2 is hydrogen, C1-8 alkyl, C1-8 alkoxy, halogen or condensed benzene ring; L is connecting arm - (CH2) m-; m is between 1 and 9).
Owner:TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
Alloy material for ship valve and preparation method thereof
The invention provides an alloy material for a ship valve. The alloy material comprises 0.21-0.3% of C, 0.06-1.0% of Mn, 0.03-0.04% of P, 0.011-0.045% of S, 0.50-0.60% of Si, 0.21-0.30% of Cu, 0.01-0.50%of Ni, 0.48-0.50% of Cr, 0.001-0.002% of Mo, 0.02-0.03% of V, 0.08-0.10% of La, 0.21-0.30% of Pb, 0.011-0.045% of As, 0.01-0.03% of Pr, 0.01-0.03% of Ce, 0.01-0.03 of Ga, 0.01-0.03% of Al, 0.01-0.03% of Zn and the balance of Fe. According to the alloy material prepared by the method, the mechanical strength of rolled steel is enhanced, the corrosion resistance of the rolled steel is greatly improved, and the alloy material has paramagnetism and meets the ocean operation requirements.
Owner:ZHEJIANG IND & TRADE VACATIONAL COLLEGE
Preparation method for Fe3O4-PAMAM-ZnO-TiO2 core-shell-shell-structured nanoparticles
InactiveCN105498851AReduce direct contact areaBarrier to direct penetrationOrganic-compounds/hydrides/coordination-complexes catalystsTitanium chlorideNanoparticle
The invention relates to a method for preparing paramagnetic Fe3O4-PAMAM-ZnO-TiO2 core-shell-shell-structured nanoparticles by taking polyamide-amine(PAMAM) dendrimers as a template and a separation layer in a low-temperature aqueous solution. The method is characterized in that firstly, the PAMAM dendrimers are firstly taken as the template, and a paramagnetic Fe3O4-PAMAM nanoparticle colloidal solution is prepared by adopting a coprecipitation method; secondly, the PAMAM dendrimers are added to wrap Fe3O4-PAMAM nanoparticles; thirdly, under the alkaline condition, soluble zinc salt is added to generate a ZnO shell layer; fourthly, a titanium tetrachloride solution is added to generate a TiO2 shell layer, and then the paramagnetic Fe3O4-PAMAM-ZnO-TiO2 core-shell-shell-structured nanoparticles with the complete ZnO shell layer and TiO2 shell layer are prepared. The nanoparticles can be dispersed into a solution in a single particle mode and have the higher photocatalytic activity and magnetic recovery rate.
Owner:SHANDONG UNIV OF TECH
1-butyl-3-methylimidazole-tri(hexafluoroacetylacetone) cobalt (II) complex magnetic ionic liquid, and preparation method and application thereof
InactiveCN110256355AEasy to prepareOperational securityComponent separationMagnetic liquidsIon exchangeParamagnetism
The invention discloses a 1-butyl-3-methylimidazole-tri(hexafluoroacetylacetone) cobalt (II) complex magnetic ionic liquid as well as a preparation method and application thereof. According to the method, 1-butyl-3-methylimidazole bromide and tri(hexafluoroacetylacetone) amine cobaltate complex are employed as monomers, and the 1-butyl-3-methylimidazole-tri(hexafluoroacetylacetone) cobalt (II) complex magnetic ionic liquid is prepared by using an ion exchange. The 1-butyl-3-methylimidazole-tri(hexafluoroacetylacetone) cobalt (II) magnetic ionic liquid is in a solid state at normal temperature, can be dissolved in methanol and acetonitrile, can keep a certain viscosity, and is insoluble in water. By using dispersion liquid-liquid micro-extraction technology, the liquid can directly enter a liquid chromatograph and can be simply and conveniently used for analysis and testing. Compared with common magnetic ionic liquid, the process for preparing the magnetic ionic liquid has the advantages of being simple in synthesis step, low in viscosity, obvious in color, high in thermal stability, safe, stable, good in machinability and the like. Besides, the prepared magnetic ionic liquid is easy to process, has paramagnetism, and is matched with a liquid chromatogram mobile phase, so that the application range of the magnetic ionic liquid can be expanded.
Owner:DALIAN UNIV OF TECH
Zerovalent nano-iron coated polymethyl methacrylate and preparation method thereof
The invention provides a zerovalent nano-iron coated polymethyl methacrylate and a preparation method thereof. The preparation method comprises the followings: after zerovalent nano-iron, a monomer, a chain transfer agent, a co-stablizer, an emulsifying agent and water are emulsified, a miniemulsion is obtained; under the protection of protective gas, after the miniemulsion obtained in the last step is heated for reaction, the zerovalent nano-iron coated polymethyl methacrylate is obtained; the protective gas is inert gas or nitrogen; the monomer is methyl methacrylate or epoxypropyl methacrylate. In nanocomposite provided by the invention, molecular weight and molecular weight distribution of the polymethyl methacrylate are both controlled, and paramagnetism exists at the same time.
Owner:SUZHOU DOUBLE ELEPHANT OPTICAL MATERIALS CO LTD
Preparation and application of magnetic microbial carbon-loaded cerium and cobalt composite nano ozone catalyst
ActiveCN113546634AStrong catalytic effectSolve difficult to recycleWater contaminantsCatalyst activation/preparationEnvironmental chemistryEnvironmental geology
The invention discloses a magnetic microbial carbon-loaded cerium and cobalt composite nano ozone catalyst and a preparation method and application thereof. Microorganisms or microbial residues are used as an adsorbent, after cerium and cobalt ions are adsorbed, potassium hydroxide is added to isolate air for thermochemical treatment, nano-particles of the metal simple substance and the oxide thereof are precipitated on the surface and micropores of the carbonized microbial carbon material so as to obtain the paramagnetic microbial carbon-loaded cerium and cobalt composite nano-catalytic material. The prepared magnetic microbial carbon-loaded cerium and cobalt composite nano catalytic material is used for respectively treating oxalic acid and coking wastewater and has a relatively strong catalytic ozonation effect, the recovery rate of the material after magnetic separation is 99.9%, and the material can be efficiently and magnetically recovered. The invention constructs a novel efficient and environment-friendly magnetic catalyst preparation method, the problem that a biochar-loaded metal nano ozone catalyst is difficult to recover is efficiently solved, and meanwhile, waste mushroom dregs are recycled to produce high-value products.
Owner:CENT SOUTH UNIV
Green-light upconversion lanthanium titanate-based paramagnetic glass material and preparation method thereof
The invention relates to a green-light upconversion lanthanium titanate-based paramagnetic glass material and a preparation method thereof. The green-light upconversion lanthanium titanate-based paramagnetic glass material is prepared from the following compositions through the following method: (1) introducing a magnetic composition Gd2O3 into a lanthanium titanate-base material; and (2) mixing powders of various oxides forming the green-light upconversion lanthanium titanate-based paramagnetic glass material, performing melting and solidification in an air-suspending container-free furnace, so as to prepare the green-light upconversion lanthanium titanate-based paramagnetic glass material. The green-light upconversion lanthanium titanate-based paramagnetic glass material also possesses good mechanical strength, thermal performance and relatively low phonon energy, and possesses wide application prospect in fields of short-wavelength laser devices, optical waveguide, information storage and the like.
Owner:江苏先进无机材料研究院
Preparation method of europium-doped sodium gadolinium fluoride red light-emitting porous nanocrystal material
ActiveCN104357056ASimple preparation processEase of industrial productionNanoopticsLuminescent compositionsOrganic solventActive agent
The invention discloses a preparation method of a europium-doped sodium gadolinium fluoride red light-emitting porous nanocrystal material, relating to a light-emitting nano material of which the nominal composition is NaGd[1-x]EuxF4 (x=0-10mol%). The red light-emitting porous nanocrystal material has the advantages of favorable dispersity, controllable crystal form structure and shape, high fluorescence intensity, low rare-earth consumption due to porous structure, energy saving and the like. The preparation technique is simple and does not need any surfactant; and the whole reaction is carried out in the water solution without using any organic solvent, so the method is economical and environment-friendly and is convenient for industrial production.
Owner:江苏晶曌半导体有限公司
Magnetism-fluorescence multifunctional nanometer material and preparation method thereof
ActiveCN107880886AGood paramagnetismSimple structureNanotechnologyInductances/transformers/magnets manufactureHigh pressureOleic Acid Triglyceride
The invention provides a magnetism-fluorescence multifunctional nanometer material and a preparation method thereof, and belongs to the technical field of fluorescent materials. The preparation methodcomprises the following steps that firstly, every 0.5 g of NaOH is dissolved in 2-6 mL of deionized water, after uniform mixing, 5-10 mL of ethyl alcohol and 8-15 mL of oleic acid are added, and a solution A is obtained after uniform mixing; secondly, a ErCl3 and MnCl2 mixed water solution B with the total concentration of 1 mmol / mL is prepared; thirdly, the mixed water solution B is added into the solution A for uniform mixing, and then a mixed solution C is obtained; fourthly, 1-3 mmol of NaF is added into the mixed solution C, stirring is conducted for 60-100 minutes, and then an initial product is obtained; fifthly, the initial product obtained in the fourth step is transferred into a high-pressure autoclave and reacts for 100-300 minutes at the temperature of 140-240 DEG C, and thena product is obtained; sixthly, the product obtained in the fifth step is cooled to the room temperature and washed, the precipitate obtained after washing is dried, and then the magnetism-fluorescence multifunctional nanometer material is obtained.
Owner:HENAN UNIVERSITY
High-resolution heat flow signal measuring system for wide temperature range in high magnetic environment
ActiveCN108680286AWide temperature rangeHigh signal accuracyCalorimeterConstant current sourceImage resolution
The invention discloses a high-resolution heat flow signal measuring system for a wide temperature range in a high magnetic environment. The high-resolution heat flow signal measuring system is composed of two constant-current source circuits, a heat flow sensor, a low-temperature-drift low-noise amplifier module and a signal measuring circuit. The two constant-current source circuits can adjust feedback, supply power to the platinum wire temperature measuring thermal resistors symmetric in pairs of the heat flow sensor, and calculate a temperature difference by a voltage difference generatedby the two groups of platinum wire temperature measuring thermal resistors, thereby generating a differential thermal signal. The differential thermal signal is amplified by a group of low-temperature-drifting low-noise amplifier module, and finally is acquired and measured by a high-resolution 24-bit [sigma]-[delta] analog-to-digital converter. Compared with the prior art, the high-resolution heat flow signal measuring system has the following characteristics that 1, the heat flow sensor has a paramagnetic property and is not affected by the strong magnetic environment; 2, the heat flow sensor has a wide temperature measurement range; 3, the heat flow sensor can generate a large heat flow signal with good repeatability; and 4,a heat flow signal amplification module has magnetic shieldingand a constant-temperature housing, and eliminates the influence of noise and temperature drift.
Owner:HANGZHOU PANGU AUTOMATION SYST
Difunctional imaging agent for SPECT and MRI and preparation method thereof
InactiveCN101554481AEasy to produce and supplyDistribution understandingRadioactive preparation carriersNMR/MRI constrast preparationsConfocalResonance
The invention discloses a difunctional imaging agent which is applicable to SPECT and MRI. The difunctional imaging agent which is provided by the invention and used for the SPECT and MRI is a compound which is formed by the combination of Tc and magnetic resonance contrast agent. The difunctional imaging agent has the advantages of high sensitivity, high spatial resolution, high accuracy and simple marking, can simultaneously achieve the detection of two kinds of imaging equipment, reduces the injection times, decreases the dosage and saves the check time.
Owner:THE AFFILIATED HOSPITAL OF SOUTHWEST MEDICAL UNIV
Mesoporous composite material Fe3O4-Co3O4 and preparation method thereof, and application in degradation of gaseous pollutants
ActiveCN111330579ALarge specific surface areaImprove adsorption capacityDispersed particle separationMetal/metal-oxides/metal-hydroxide catalystsCobalt saltAqueous solution
The invention discloses a mesoporous composite material Fe3O4-Co3O4 and a preparation method thereof, and application of the mesoporous composite material Fe3O4-Co3O4 in degradation of gaseous pollutants. The preparation method comprises the following steps: respectively dissolving an iron salt and a cobalt salt in an aqueous solution to obtain an iron-containing solution and a cobalt-containing solution; mixing the iron-containing solution and the cobalt-containing solution, fully stirring, adding an aqueous solution containing F127, and drying the final mixed solution; and calcining the dried product under an inert gas or air condition, cooling to room temperature, and grinding to obtain the mesoporous composite material Fe3O4-Co3O4. The mesoporous composite material Fe3O4-Co3O4 disclosed by the invention has the capability of adsorbing and degrading pollutants, so that gaseous pollutants such as isopropanol and the like can be effectively and conveniently degraded, and the purpose of purifying air is achieved.
Owner:LIAONING UNIVERSITY
Safety badminton racket and making method thereof
The invention discloses a safety badminton racket and a making method thereof, which belong to the technical field of sports equipment and aim at solving the problems of poor toughness, poor torsion resistance performance and low safety of the racket in the prior art. The safety badminton racket comprises an aluminum alloy middle bar, a racket frame arranged at the top end of the aluminum alloy middle bar, and a handle arranged at the bottom end of the aluminum alloy middle bar and sleeving the aluminum alloy middle bar. The aluminum alloy middle bar is made of a special material, the weight is light, good toughness and good elasticity can be kept while high strength is ensured, the problem that the middle bar is broken due to impact during the use process can be avoided, the whole safetyperformance is enhanced, an adjusting device is used to enable the gravity point of the middle bar to be adjusted, the strength of the badminton racket is adjusted according to a different user, and the middle bar applicability unity is avoided.
Owner:江苏威尔顺体育用品有限公司
Preparation and application of magnetic microbial carbon-supported cerium and cobalt composite nano-ozone catalyst
ActiveCN113546634BSolve the problem of resource utilizationImprove catalytic abilityWater contaminantsCatalyst activation/preparationOXALIC ACID DIHYDRATEChemical treatment
The invention discloses a magnetic microbial carbon-supported cerium and cobalt composite nano-ozone catalyst and a preparation method and application thereof. Microorganisms or microbial slag are used as adsorbents, after absorbing cerium and cobalt ions, potassium hydroxide is added to isolate air thermochemical treatment , so that the metal element and its oxide nanoparticles are precipitated on the surface and micropores of the carbonized microbial carbon material, thereby obtaining a paramagnetic microbial carbon-supported cerium and cobalt composite nanocatalytic material. The prepared magnetic microbial carbon-supported cerium and cobalt composite nano-catalytic materials respectively treat oxalic acid and coking wastewater, and have strong catalytic ozone oxidation effects, and the material recovery rate after magnetic separation is 99.9%, which can be efficiently magnetically recovered. The invention constructs a novel high-efficiency and environment-friendly magnetic catalyst preparation method, which effectively solves the problem that the biochar-supported metal nano-ozone catalyst is difficult to recover, and at the same time, the waste bacteria residues are recycled to produce high-value products.
Owner:CENT SOUTH UNIV
A kind of micro-arc oxidation preparation method of magnetic tio2 bioactive coating
ActiveCN107119304BMagnetic hasGuaranteed binding effectSurface reaction electrolytic coatingPharmaceutical delivery mechanismElectrolytic agentMicro arc oxidation
The invention discloses a micro-arc oxidation preparation method of a magnetic TiO2 bioactive coating. In an air environment, an electrolytic solution containing calcium salt, phosphor salt and molysite is taken, a pH value of the electrolytic solution is adjusted to be 5.0-5.3, titanium or a titanium alloy is taken as an anode, stainless steel is taken as a cathode, and titanium or the titanium alloy is subjected to micro-arc oxidation treatment for 1-8min by adopting a pulsed power supply, with the temperature of the electrolytic solution being kept at 5-25 DEG C, thus the magnetic TiO2 bioactive coating is generated on a surface layer of titanium or the titanium alloy. The magnetic TiO2 coating having magnetism (Ms being 0.2696-1.101emu / g) and good bioactivity can be prepared with the adoption of the micro-arc oxidation preparation method.
Owner:XI AN JIAOTONG UNIV
Method for preparing FePt:RE amorphous alloy nano material mixed with rare earth elements
InactiveCN101538691BAmorphous tendency increasesImprove thermal stabilityRare-earth elementFluorescence
Owner:TONGJI UNIV
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