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Prepn. process of mesic hole hollow ball-shape titania powder
This invention relates to a method to prepare mezoporous empty-centered titanium dioxide powders, which comprises following steps: titanium chloride is made into hydrosol with pure water, diluted and introduced into a spray dryer for spray drying. The subsequent product is empty-centered ball-shaped powder made up of nanosized titanium dioxide particles and the preceding titanium chloride is titanium tetrachloride or titanium trichloride. The titanium dioxide particles prepared in this invention all have mezoporous empty-centered ball-shaped structure and the empty-centered wall is made up of nanosized titanium dioxide particles and mezopores, on the surface of which titanium atoms possess a fraction of as high as 70%. As only titanium tetrachloride is adopted as precursor and no other reagent is necessary, the product is highly pure and has excellent photocatalytic properties. This method has the advantages of high yield, low cost, easily controlled technique and convenience for magnification experiment. Besides, there are not severe requirements for facilities and this method is suitable for industrial production.
Owner:ZHEJIANG UNIV OF TECH
Process for preparing rutile phase titanium dioxide nano-powder
InactiveCN1631795AUniform particlesGood dispersionNanostructure manufactureTitanium dioxideCrystal structureHYDROSOL
The invention relates to a method for preparing titanium dioxide of rutile phase power, which includes the following steps: prepare raw material of titanium tetrachloride to be hydrosol, which is dilute after hydrolyze, heat it to be hydrolyze, generating deposit, filter the deposit which is then washed by water and dried, obtaining the titanium dioxide of rutile phase powder. Its advantages mainly includes: (1) the crystal structure of nanometic power is rutile phase; (2) the titanium dioxide of rutile phase power is average, with good dispersibility and high level of crystallization; (3) only use titanium tetrachloride as crystallization, without any other agent and crystal; (4) it has high productivity, low cost, easy-controllable technical course and is easy to magnify experiment; (5) has fewe requirements for the equipments, suitable for industrialized production.
Owner:ZHEJIANG UNIV OF TECH
Copper-based ternary mixed metal oxide hollow nano-material, preparation method and application thereof
ActiveCN106807380ASimple methodReliable methodOrganic compound preparationCobalt compoundsSurface-active agentsNanostructure
The invention provides a copper-based ternary mixed metal oxide hollow nano-material, a preparation method and an application thereof. Compared with the prior art, the preparation method of the copper-based ternary mixed metal oxide hollow nano-material has universality, the product is single in form, uniform in dimension and simple in method. The product purity is high, and the product is free from impurities, low in production cost, short in flow, low in equipment requirement, easy to perform amplification experiment and can realize the industrial production. Moreover, the low-price urea is used as structuring agent of a hollow structure, the grain size of a material is controlled by adjusting ratio of dihydric alcohol and water and dosage specificity of a non-polar surface active agent; the prepared homogeneous copper-based ternary mixed metal oxide hollow nano-material can be applied to restoration of p-nitrophenol, and is quick in reaction speed, high in catalyst efficiency, good in circulating effect, and low in cost.
Owner:ANHUI NORMAL UNIV
Method for preparing mesoporous titanium dioxide powder body
InactiveCN101209857ARaise the ratioLow impurity contentPhysical/chemical process catalystsTitanium dioxideInorganic saltsTetrachloride
The invention relates to a preparation method of titanium dioxide powder with mesoporous structure. The method is that: titanium tetrachloride is adopted as raw material, and is added with pure water to prepare aquasol according to the volume ratio 1:1- 4 of titanium tetrachloride to pure water; the obtained material is stood for 0.5hour-15days; then the obtained material is added with pure water to dilute according to the volume ratio 1:1- 4 of aquasol to pure water, added with ammonia sulfate, the amount of which is 0.5- 4 times that of tianium tetrachloride, heated to 50-70 DEG C, stirred under the condition of heat- preservation for 0.5-3 hours, heated to 90-100 DEG C, stirred, counter flowed and heat-preserved for 0.5-4 hours; then the titanium dioxide powder with mesoporous structure is finally made after filtering, washing and drying processes. The invention has the advantages that: 1. In the titanium dioxide powder with mesoporous structure, the surface plutonium takes up high ratio; 2. only inorganic salt is adopted as precursor, using no organic titanium salt; 3. products contains little impurities with high purity and good performance; 4. the method of the invention has high yield and low cost, is easy to be controlled and convenient for scaling up test, has low requirement for equipment and is applied to industrialized production.
Owner:ZHEJIANG UNIV OF TECH
Ferroferric oxide micro-nano material as well as preparation method and application thereof
ActiveCN106745319AIncrease the number ofPrevent precipitationCell electrodesSecondary cellsMicro nanoPotassium ferricyanide
The invention provides a ferroferric oxide micro-nano material as well as a preparation method and application thereof. The preparation method comprises the steps of dissolving potassium ferricyanide into a mixed solvent of water and glycerin, and preparing a three-dimensional self-assembling spherical structure based on ferroferric oxide by virtue of a one-time solvothermal method, wherein the core of the spherical structure is formed by nanoparticles, the surface of an outer layer of a sphere is formed by polyhedral nanosheets through embedding and interweaving, and the diameter of the sphere is 1-3 microns. Compared with the prior art, the preparation method has the advantages that a synthetic method is extremely simple, the cost is low, the preparation is finished by one step, the operation is simple, the reproducibility is high, and the three-dimensional self-assembling spherical structure can be obtained under the action of glycerin. The ferroferric oxide micro-nano material has the characteristics of uniform size, high purity, low cost, easiness in industrial production and the like. The ferroferric oxide micro-nano material prepared by virtue of the preparation method presents excellent performance in the aspect of energy storage of lithium ion batteries and has potential practical application values.
Owner:ANHUI NORMAL UNIV
Liquid grinding aid capable of promoting coagulating, and preparation method thereof
The invention discloses a liquid grinding aid capable of promoting coagulating, and a preparation method thereof, and belongs to the technical field of cement additive. The liquid grinding aid capableof promoting coagulating is prepared from, by mass, aluminum sulfate of 5% to 15%, magnesium sulfate of 5% to 10%, modified alcohol amine small organic molecules of 40% to 50%, sodium lignosulfonateof 3% to 10%, calcium formate of 1.5% to 3%, and balance deionized water. According to the preparation method, aluminum sulfate and magnesium sulfate are mixed as a coagulating promoting main component, so that cement hydration process is accelerated; chemical imbalance caused by high content aluminium ions is capable of realizing dissolving of gypsum and C3A easily, promoting early stage generation of a large amount of ettringite, and realizing rapid coagulation; the modified alcohol amine small organic molecules are taken as a grinding aid enhancing component, and is high in stability; the preparation technology is simple; reaction is relatively mild; the liquid grinding aid is capable of promoting cement early stage rapid coagulation, and at the same time, early stage strength is ensured, later stage strength increasing is not influenced, and the adaptability on cement is excellent.
Owner:安徽海螺材料科技股份有限公司 +1
Process for preparing nanometer zirconium dioxide powder by double liquid phase hydrolysis
The present invention discloses double-liquid phase hydrolysis process of preparing nano zirconia powder in the field of chemical material preparation. Hydrolysis of zirconium oxychloride or zirconyl nitrate is completed in double-liquid phase, i. e., via water-oil azeotropic process; the hydrolysis product HCl or HNO3 is eliminated; and through further stoving and roasting treatment, homogeneous and dispersed spherical nano zirconia powder of about 10 nm size is produced. The product is used in information ceramic and structural ceramic and as chemical material. The technological process is simple, easy to operate, high in material utilization and low in power consumption, and may be realized in production line.
Owner:TSINGHUA UNIV
Preparation method of iron-doped TiO2 nanotube
ActiveCN102350352ASpecial structureLarge specific surface areaCatalyst activation/preparationMetal/metal-oxides/metal-hydroxide catalystsWater bathsTio2 nanotube
The invention discloses a preparation method of an iron-doped TiO2 nanotube, comprising the following steps of: preparing titanium tetrachloride into hydrosol, staying until the hydrosol is aged, diluting by adding water so as to obtain a colorless transparent solution; adding ferrite yellow into the colorless transparent solution at room temperature, gradually heating the mixed liquor to the temperature of 80-100 DEG C, followed by constant temperature water bath, uniformly stirring for 1-3 hours to obtain a sediment, washing the sediment, drying and grinding to obtain the iron-doped TiO2 nanotube. The mass ratio of Fe in the added ferrite yellow to Ti in the added titanium tetrachloride is 0.5-1.5: 1. The method provided by the invention has advantages of high yield, low cost, easily controllable process and low requirement on equipment, and is suitable for industrial production; in addition, in comparison with the photocatalytic activity of regular nanometer titanium dioxide materials, the photocatalytic activity of the iron-doped titanium dioxide (TiO2) nanotube prepared in the invention is enhanced.
Owner:ZHONGRONG TECH CORP LTD
Preparation method and application of Fe3O4-Co3O4 porous magnetic composite material
The invention discloses a preparation method of a Fe3O4-Co3O4 porous magnetic composite material. The preparation method comprises the following steps of (a) blending, (b) heating, (c) drying and (d) calcining. In comparison with the prior art, the invention has the following advantages: (1) other oxides are not found in the product, and the product is a heterogeneous material and has uniform particle size, special morphology, high activity, simple one-step synthesis method, large apparent density, and good magnetic performance; (2) the method has high yield, low cost, short production flow and is convenient in scale-up experiment; (3) the method is simple and controllable, and has low demand for equipment, so that the method is suitable for industrial production; and (4) the magnetic material with a heterogeneous oxide core-shell structure provided by the invention can be effectively applied to lithium-ion and fuel cell materials.
Owner:ANHUI NORMAL UNIV
Prepn. process of mesic hole hollow ball-shape titania powder
This invention relates to a method to prepare mezoporous empty-centered titanium dioxide powders, which comprises following steps: titanium chloride is made into hydrosol with pure water, diluted and introduced into a spray dryer for spray drying. The subsequent product is empty-centered ball-shaped powder made up of nanosized titanium dioxide particles and the preceding titanium chloride is titanium tetrachloride or titanium trichloride. The titanium dioxide particles prepared in this invention all have mezoporous empty-centered ball-shaped structure and the empty-centered wall is made up of nanosized titanium dioxide particles and mezopores, on the surface of which titanium atoms possess a fraction of as high as 70%. As only titanium tetrachloride is adopted as precursor and no other reagent is necessary, the product is highly pure and has excellent photocatalytic properties. This method has the advantages of high yield, low cost, easily controlled technique and convenience for magnification experiment. Besides, there are not severe requirements for facilities and this method is suitable for industrial production.
Owner:ZHEJIANG UNIV OF TECH
Ultra-micro capsule material, preparation method and application thereof
InactiveCN108347871AImprove microwave absorption performanceHigh complex permeabilityMagnetic/electric field screeningMicroballoon preparationPolypyrrolePhysical chemistry
The invention discloses an ultra-micro capsule material, a preparation method and application thereof. The ultra-micro capsule material is of a core-shell structure; the core-shell structure is composed of rare earth cobalt magnet R2Co17 micron-order particles which are adopted a core and protonated polypyrrole which is adopted as a shell. The preparation process of the ultra-micro capsule material includes the following steps that: a rare earth cobalt magnet R2Co17 block is ground and ball-milled, so that rare earth cobalt magnet R2Co17 micron-order particles can be obtained; the rare earth cobalt magnet R2Co17 micron-order particles are added into protonated pyrrole monomer; and an ammonium persulfate oxidizing agent is added into the protonated pyrrole monomer, and a newly obtained mixture is stirred, so that the ultra-micro capsule material can be obtained. The high-complex magnetic permeability rare earth cobalt magnet and the high-complex permittivity protonated polypyrrole are composited, so that the wave absorbing property of the ultra-micro capsule material in a microwave S-band can be effectively improved.
Owner:NINGBO UNIV
Monatomic copper/boron double-site multifunctional catalyst as well as preparation method and application thereof
PendingCN114192181AEasy to scale up experimentsRealize industrial productionGroup 4/14 element organic compoundsPhysical/chemical process catalystsOrganic acidPtru catalyst
According to the monatomic copper / boron double-site multifunctional catalyst and the preparation method and application thereof, copper salt serves as a metal source, a cyanamide compound serves as a nitrogen source, organic acid serves as a dissolving agent of chitosan, soluble boron salt serves as a boron source, chitosan serves as a carbon source, silicon dioxide and frozen ice serve as double templates, a pyrolysis-etching-activation strategy is adopted, and the monatomic copper / boron double-site multifunctional catalyst is prepared. And the copper / boron double-site catalyst material with the hierarchical porous structure is successfully prepared. The catalyst has a hierarchical porous structure, provides abundant mass transfer channels for catalytic reaction, and further realizes efficient catalytic performance. In addition, the catalyst can also be used for reducing carbon dioxide to prepare synthesis gas. Compared with the prior art, the method for preparing the monatomic copper / boron double-site multifunctional catalyst material is simple, reliable, low in production cost, short in process, low in equipment requirement, easy to amplify experiments and capable of achieving industrial large-scale production.
Owner:ANHUI UNIVERSITY OF TECHNOLOGY
Monatomic site iron catalyst with adjustable coordination environment as well as preparation method and application of monatomic site iron catalyst
ActiveCN114192189AIncrease capacityImprove economyOrganic compound preparationOrganic-compounds/hydrides/coordination-complexes catalystsNitro compoundPtru catalyst
The invention provides a monatomic site iron catalyst with an adjustable coordination environment and a preparation method and application thereof, the preparation method comprises the following steps: under an ice-water bath condition, adding concentrated sulfuric acid into a ferrocene formaldehyde solution, mixing a pyrrole solution drop by drop, and continuously stirring for reaction in the ice-water bath; carrying out reflux heating reaction to obtain a precursor, grinding the precursor and a nitrogen-containing compound, and carrying out pyrolysis in an inert atmosphere to obtain iron-nitrogen-sulfur co-doped carbon; and treating with a hydrochloric acid solution, washing and drying to obtain the coordination environment adjustable monatomic site iron catalyst. Compared with the prior art, the method for preparing the monatomic site iron has the advantages that the coordination environment and the carrier electronic structure can be controlled and adjusted, the loading capacity of the monatomic site iron is high, the synthesis method is simple, an amplification experiment is easy, and industrial production can be realized; the catalyst can be used for a benzene oxidation reaction, a styrene epoxidation reaction and a nitro-compound hydrogenation reaction, and has the advantages of high catalytic efficiency, good circulation effect, low cost and the like.
Owner:ANHUI UNIVERSITY OF TECHNOLOGY
A kind of ferric oxide micro-nano material, preparation method and application thereof
Owner:ANHUI NORMAL UNIV
Method for preparing mesoporous titanium dioxide powder body
InactiveCN101209857BRaise the ratioLow impurity contentPhysical/chemical process catalystsTitanium dioxideInorganic saltsTetrachloride
The invention relates to a preparation method of titanium dioxide powder with mesoporous structure. The method is that: titanium tetrachloride is adopted as raw material, and is added with pure waterto prepare aquasol according to the volume ratio 1:1- 4 of titanium tetrachloride to pure water; the obtained material is stood for 0.5hour-15days; then the obtained material is added with pure waterto dilute according to the volume ratio 1:1- 4 of aquasol to pure water, added with ammonia sulfate, the amount of which is 0.5- 4 times that of tianium tetrachloride, heated to 50-70 DEG C, stirred under the condition of heat- preservation for 0.5-3 hours, heated to 90-100 DEG C, stirred, counter flowed and heat-preserved for 0.5-4 hours; then the titanium dioxide powder with mesoporous structureis finally made after filtering, washing and drying processes. The invention has the advantages that: 1. In the titanium dioxide powder with mesoporous structure, the surface plutonium takes up highratio; 2. only inorganic salt is adopted as precursor, using no organic titanium salt; 3. products contains little impurities with high purity and good performance; 4. the method of the invention hashigh yield and low cost, is easy to be controlled and convenient for scaling up test, has low requirement for equipment and is applied to industrialized production.
Owner:ZHEJIANG UNIV OF TECH
Cement grinding aid for enhancing yield increase
The invention provides a cement grinding aid for enhancing yield increase. The cement grinding aid is prepared from an alcohol amine organic small molecule modified graphene mixed solution, an inorganic early enhancer, an inorganic coagulant, sodium dodecyl sulfate, molasses, mixed diol and deionized water. The alkylol amine organic small molecule modified graphene mixed solution is prepared froman alkylol amine mixture, graphene and deionized water, alkylol amine organic small molecules are a mixture of triethanolamine, diethanolisopropanolamine and triisopropanolamine, and the inorganic early-stage reinforcing agent is a mixture of talcum powder and glass fibers,the inorganic coagulant is borax, wherein the mixed diol is a mixture of ethylene glycol, diethylene glycol and propylene glycol.The synergistic effect of the components can greatly reduce the energy consumption in the powder process, and especially can obviously enhance the machine-hour yield, stimulate the cement strengthand improve the mechanical properties of the cement.
Owner:绍兴鼎峰水泥有限公司
Preparation method and application of Fe3O4-Co3O4 porous magnetic composite material
Owner:ANHUI NORMAL UNIV
Preparation method and application of polymer-based composite membrane
PendingCN114602331AImprove gas separation performanceImprove gas permeabilitySemi-permeable membranesDispersed particle separationMolecular sievePolymer science
The invention discloses a preparation method and application of a polymer-based composite tube membrane, compared with a traditional method, the composite membrane prepared by the method has the advantages that the thickness of a polymer matrix membrane is greatly reduced, and meanwhile, a metal framework material grows in a limited range in a polymer; the size of the metal organic framework material is controlled, the defect that the metal organic framework material is easy to fall off on the carrier is overcome, and a continuous and compact metal organic framework-high-molecular polymer selective separation layer is formed on the surface of the tubular carrier. According to the composite separation membrane, by reducing the thickness of the membrane and introducing the metal organic framework material, the gas flux of the high-molecular polymer membrane is improved, the molecular screening capacity is high, the gas permeation flux is high, and the composite separation membrane has a good application prospect in the chemical field needing gas separation and purification.
Owner:NINGBO ELECTRIC POWER DESIGN INST +1
Process for preparing rutile phase titanium dioxide nano-powder
InactiveCN1277749CUniform particlesGood dispersionNanostructure manufactureTitanium dioxideCrystal structureHYDROSOL
The invention relates to a method for preparing titanium dioxide of rutile phase power, which includes the following steps: prepare raw material of titanium tetrachloride to be hydrosol, which is dilute after hydrolyze, heat it to be hydrolyze, generating deposit, filter the deposit which is then washed by water and dried, obtaining the titanium dioxide of rutile phase powder. Its advantages mainly includes: (1) the crystal structure of nanometic power is rutile phase; (2) the titanium dioxide of rutile phase power is average, with good dispersibility and high level of crystallization; (3) only use titanium tetrachloride as crystallization, without any other agent and crystal; (4) it has high productivity, low cost, easy-controllable technical course and is easy to magnify experiment; (5) has fewe requirements for the equipments, suitable for industrialized production.
Owner:ZHEJIANG UNIV OF TECH
Preparation process of poly-1,8-naphthalenediamine
The present invention is preparation process of 1, 8-naphthalene diamine homopolymer. The chemical oxidation process of preparing poly1, 8-naphthalene diamine includes the following steps: dissolving 1, 8-naphthalene diamine in organic solvent, adding water solution of oxidant into the monomer solution to react, and post-treatment. The process has water or organic solvent as polymerization medium, and is simple, and high in 1, 8-naphthalene diamine homopolymer yield up to 98.0 %. The present invention provides new way of preparing 1, 8-naphthalene diamine homopolymer.
Owner:TONGJI UNIV
A kind of phase change energy storage microcapsule with polyurethane modified silicone resin as shell material and preparation method thereof
ActiveCN111054283BAdjustable phase change temperatureHigh phase change enthalpyHeat-exchange elementsMicroballoon preparationPolymer sciencePtru catalyst
The invention relates to a phase-change energy storage microcapsule with a polyurethane modified silicone resin as the shell material and a preparation method thereof, specifically disclosing that the preparation method includes the following steps: (1) uniformly mixing the monomers for forming the silicone resin, adding The catalyst is prepolymerized to obtain a polysiloxane prepolymer; (2) the urethane polyprepolymer is added to (1) to react to obtain a polyurethane modified silicone resin prepolymer; (3) the core material and the shell (4) preparing an aqueous solution of surfactant; (5) mixing the core material and shell material prepolymer mixture and the aqueous solution of surfactant and Emulsify to obtain an emulsion, add a catalyst until the reaction is complete, separate and dry to obtain polyurethane-modified silicone resin shell phase-change energy storage microcapsules. The method is green and pollution-free, and the operation is simple. The obtained microcapsules have smooth surface, good compactness, adjustable phase transition temperature, controllable particle size, good heat resistance and high phase transition enthalpy.
Owner:SHENZHEN INST OF ADVANCED ELECTRONICS MATERIALS
A kind of preparation method of three-dimensional manganese dioxide airgel
ActiveCN107445208BImprove the shortcomings of poor conductivityImprove conductivityCell electrodesManganese oxides/hydroxidesPtru catalystChemical composition
The invention belongs to the field of catalyst preparation and relates to a preparation method of three-dimensional manganese dioxide aerogel. The invention provides a three-dimensional manganese dioxide aerogel. The manganese dioxide aerogel is doped with silver element, and its chemical composition conforms to the general chemical formula: Ag-MnO. 2 , wherein the added amount of the silver element is based on the total mass of the silver-doped manganese dioxide aerogel, and its mass percentage is greater than 0 and less than or equal to 50%. The invention further provides a method for preparing three-dimensional manganese dioxide aerogel. The invention provides a method for preparing a three-dimensional manganese dioxide aerogel. The prepared manganese dioxide aerogel has no residual manganese precursors and organic modified molecules, high mechanical strength, large specific surface area, and good conductivity. The preparation method is simple, it is easy to scale up the experiment to prepare larger aerogels, and it has the advantages of high electrocatalytic activity.
Owner:SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
Nanometer titanium dioxide-coated iron oxide yellow composite material and preparation method thereof
ActiveCN101947450BImprove performanceImprove photocatalytic performanceInorganic pigment treatmentMetal/metal-oxides/metal-hydroxide catalystsDioxide titaniumCoating
The invention discloses a nanometer titanium dioxide-coated iron oxide yellow composite material and a preparation method thereof. The nanometer titanium dioxide-coated iron oxide yellow composite material is prepared by coating nanometer titanium dioxide on the surface of iron oxide yellow serving as a carrier, wherein the nanometer titanium dioxide belongs to an anatase phase; the composite material is in a long stick shape, the longitudinal length is between 0.5 and 1.5 mu m, and the transversal particle size is between 140 and 160 nm; and the molar ratio of Fe to Ti in the composite material is 0.5 to 1.5:1. The nanometer titanium dioxide-coated iron oxide yellow composite material prepared by the method has the advantages of uniform coating of nanometer powder, high dispersibility, high performance and wide application field. The preparation method has the advantages of high yield, low cost, easily controllable process procedure and suitability for industrialized production.
Owner:浙江海宁经编产业园区开发有限公司
A kind of iron-cobalt alloy microstructure catalyst material, preparation method and application
ActiveCN106890644BEasy to washEasy to recycleOrganic compound preparationCatalyst activation/preparationState of artEar shaping
The invention provides an iron-cobalt alloy microstructure catalyst material, a preparation method and an application. Compared with the existing technology, the preparation method provided by the invention is prepared by a solvothermal method, and the reaction conditions are mild. The prepared iron-cobalt alloy The material has a wheat ear-like structure, which has not been reported so far; the structure has good magnetic properties, and can be quickly separated and recovered using magnets in cyclic catalysis experiments. At the same time, the catalyst can be easily washed and recycled; and The production cost is low, the process is short, and the equipment requirements are not high. It is easy to amplify experiments and can realize industrial production; the microstructure of the iron-cobalt alloy in the present invention can be used in the reduction of p-nitrophenol, showing fast reaction speed, high catalytic efficiency, and good recycling effect. , low cost and other advantages.
Owner:ANHUI NORMAL UNIV
Process for preparing nanometer zirconium dioxide powder by double liquid phase hydrolysis
Owner:TSINGHUA UNIV
A copper-based ternary composite metal oxide hollow nanomaterial, preparation method and application
ActiveCN106807380BSimple methodReliable methodOrganic compound preparationCobalt compoundsAlcoholNitrophenol
The invention provides a copper-based ternary composite metal oxide hollow nanomaterial, a preparation method and an application. Compared with the existing technology, the method for preparing a copper-based ternary composite metal oxide hollow nanostructure has universal advantages. adaptability, and the product has a single shape, uniform size, and a simple method. The product has high purity, no impurities, low production cost, short process, low equipment requirements, easy amplification experiments and can realize industrial production; moreover, in this method, cheap urea is used as the constructing agent of the hollow structure and the regulating glycol The ratio to water and the amount of non-polar surfactant specifically control the particle size of the material; the prepared homogeneous copper-based ternary composite metal oxide hollow nanomaterial can be used in the reduction of p-nitrophenol, showing a reaction It has the advantages of fast speed, high catalytic efficiency, good circulation effect, and low cost.
Owner:ANHUI NORMAL UNIV
Preparation method of iron-doped TiO2 nanotube
ActiveCN102350352BSpecial structureLarge specific surface areaCatalyst activation/preparationMetal/metal-oxides/metal-hydroxide catalystsTio2 nanotubeTitanium tetrachloride
The invention discloses a preparation method of an iron-doped TiO2 nanotube, comprising the following steps of: preparing titanium tetrachloride into hydrosol, staying until the hydrosol is aged, diluting by adding water so as to obtain a colorless transparent solution; adding ferrite yellow into the colorless transparent solution at room temperature, gradually heating the mixed liquor to the temperature of 80-100 DEG C, followed by constant temperature water bath, uniformly stirring for 1-3 hours to obtain a sediment, washing the sediment, drying and grinding to obtain the iron-doped TiO2 nanotube. The mass ratio of Fe in the added ferrite yellow to Ti in the added titanium tetrachloride is 0.5-1.5: 1. The method provided by the invention has advantages of high yield, low cost, easily controllable process and low requirement on equipment, and is suitable for industrial production; in addition, in comparison with the photocatalytic activity of regular nanometer titanium dioxide materials, the photocatalytic activity of the iron-doped titanium dioxide (TiO2) nanotube prepared in the invention is enhanced.
Owner:ZHONGRONG TECH CORP LTD
Recombinant carrot antifreeze protein gene CaAFP and application thereof
InactiveCN107840874AEasy to operateEasy extractionFungiDough treatmentPichia pastorisAntifreeze protein
The invention discloses a recombinant carrot antifreeze protein gene CaAFP and application thereof and belongs to the technical field of food biology. A complete gene sequence of recombinant carrot antifreeze protein which is expressed in pichia pastoris is successfully synthesized by taking a carrot antifreeze protein amino acid sequence as a template, and is subjected to recombinant expression in the pichia pastoris; large-batch preparation of the antifreeze protein is realized through induced expression and the yield is 0.88g / L; assistance is provided for industrial production of the antifreeze protein.
Owner:JIANGNAN UNIV
Method for preparing tin oxide nanocrystalline coated by organic ligand
ActiveCN100595160CGood size controlNarrow size distributionTin oxidesOrganic solventSynthesis methods
The invention provides a synthesis method of tin oxide nano-crystal which is wrapped by organic ligands. The method is that: tin source and organic wrapping agent are added into toluene; the mixture is heated, dissolved and added with water solution of alkaline matter, then sent into a reaction vessel at the temperature of 120-180 DEG C to react for 1-24 hours; the tine source is hydrolyzed; afternucleation and growing process, the tin oxide nano-crystal wrapped with organic ligands is prepared. The whole preparation method of the invention is characterized in that reaction condition is moderate, the operation is simple and the preparation period is short, thereby the preparation method can be easily put into mass production. In addition, the tin oxide nano-crystal with different sizes and shapes such as spherical shape and branch shape can be prepared by adjusting reaction time, temperature, alkaline amount, water amount and organic wrapping agent type; the size and shape of the synthesized tin oxide nano-crystal can also be controlled; the size distribution is narrow, and the nano-crystal can be dissolved into organic solvent with different heteropolarities through surface ligand exchange.
Owner:CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
Method for synthesizing cuprous oxide nano-cubes on large scale based on continuous kettle type device
InactiveCN112429763AContinuous operationReduce labor costsCopper oxides/halidesPhysical chemistryCopper sulfate
The invention discloses a method for synthesizing cuprous oxide nano-cubes on a large scale based on a continuous kettle type device. The device required by the method comprises a micro-mixer, continuous reaction kettles connected in series and a product collection kettle. The method for synthesizing the cuprous oxide nano-cubes comprises the following steps: (1) preparing a reaction raw materialA which is a mixed solution of copper sulfate, sodium citrate and sodium hydroxide; (2) preparing a reaction raw material B which is an ascorbic acid solution; (3) mixing the raw materials by virtue of the micro-mixer, feeding the mixture into the continuous reaction kettles connected in series for mixing and reacting, and collecting a reaction product by virtue of the product collection kettle; and (4) diluting, centrifuging, separating and washing a collected product solution to obtain the cuprous oxide nano-cubes. The method realizes continuous synthesis of the cuprous oxide nano-cubes, andis good in stability, high in yield and suitable for mass production.
Owner:江苏南创化学与生命健康研究院有限公司
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