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Gene vector system, its preparation and application
ActiveCN102899343ADoes not affect compounding abilityImprove binding efficiencyGenetic material ingredientsRespiratory disorderIntracellularGenetic Materials
The invention discloses a gene vector system of a redox sensitive shielding system having targeting function, its preparation and application in the field of gene therapy. The gene vector system disclosed herein comprises a redox sensitive shielding system having targeting function, a cationic high-molecular material and plasmid DNA; wherein the cationic high-molecular material and plasmid DNA form compound particles, the redox sensitive shielding system having targeting function shields the compound surface by electrostatic action, thus the toxicity of the vector can be reduced, the loaded genetic material is transferred into the cell successfully, the expression of the genetic material is realized, the transfection process is completed, the targeting of gene transfection can be raised, and simultaneously the gene transfection efficiency is raised.
Owner:SICHUAN UNIV
Bi2S3/TiO2 nanotube array and preparation method thereof
InactiveCN101851773ALarge specific surface areaAperture adjustableSurface reaction electrolytic coatingSemiconductor materialsTio2 nanotube
The invention discloses a semiconductor material -Bi2S3 / TiO2 nanotube array and a preparation method thereof. Dimethyl sulfoxide (DMSO) containing Bi (NO3) . 5H2O (0.05mol / L-2mol / L), sulfur powder (0.1mol / L-3mol / L) and L-cysteine (0.12mol / L-3mol / L) as plating bath, and Bi2S3 crystals are deposited on a TiO2 nanotube array in a three-electrode system. The Bi2S3 / TiO2 nanomaterial with a novel structure can effectively expands the absorption range of TiO2 in a visible light region and reduces the recombination probability of electron hole pair, can produce more photo-generated electrons and photo-generated holes under visible light, and has potential application in solar batteries, solar radiation absorbers, nano switches, thermoelectric photoelectric converters, superconductors, gas sensors and other aspects.
Owner:HUNAN UNIV
Preparation method of carbon-cladded magnetic metal nanometer material
InactiveCN1951608AAvoid generatingControl thicknessInductances/transformers/magnets manufactureCarbon layerCarbonization
The invention relates to a method for preparing carbon packed magnetic metal nanometer materials. Wherein, it comprises that magnetic metal nanometer particle preparation and carbon package; in the second step, it adds the product of first step into the water solution of carbohydrate, mixing and increasing temperature to 160Deg. C, for 2h, separating, washing and drying. Compared with present technique, the invention has worm liquid carbonization condition, low temperature, the state of metal nanometer particles will not change, and the invention can obtain variable particles. And it can control the ratio between carbohydrate and magnetic metal nanometer particles, to control the carbon layer thickness. The invention has simple structure and short time.
Owner:ANHUI NORMAL UNIV
CuO-NiO/rGO composite material with efficient electro-catalysis oxygen reduction performance
The invention relates to a CuO-NiO / rGO composite material with efficient electro-catalysis oxygen reduction performance, and belonging to the technical field of electro-catalysis materials. In the CuO-NiO / rGO composite material provided by the invention, CuO-NiO nanoparticles are attached to a reduction-oxidized graphene sheet layer, a mass ratio of the CuO-NiO nanoparticles to the rGO is 100:3-5, the sizes of the CuO-NiO nanoparticles are 6-10nm, and the reduction-oxidized graphene sheet layer is a single sheet layer; and the electro-catalysis oxygen reduction performance is provided. Compared with existing oxygen reduction reaction catalysts, the CuO-NiO / rGO composite material provided by the invention is significantly reduced in cost, and is the oxygen reduction reaction catalyst with low price and excellent electro-catalysis oxygen reduction performance. The CuO-NiO / rGO composite material provided by the invention adopts copper salts, nickel salts, hydroxides and oxidized graphene as materials, deionized water and absolute ethyl alcohol as solvents, and glycol as a dispersing agent and a reducing agent, and is synthesized by using a one-pot hydrothermal method. The CuO-NiO / rGO composite material provided by the invention is low in material price, prone to get materials, simple and easy in preparation operation, simple in aftertreatment process, prone to control reaction parameters, short in flow and low in energy consumption.
Owner:UNIV OF JINAN
Preparation method of antimony sulfide nano rod
InactiveCN101786661AUniform size distributionControl size distributionNanostructure manufactureAntimony compoundsSingle crystalPrecipitation
The invention provides a preparation method of an antimony sulfide nano rod, which comprises the following steps: firstly, adding Sb2O3 into o-hydroxy diol and evenly stirring; secondly, adding sulphur powder and a surfactant for evenly stirring; thirdly, adding sodium borohydride and stirring and reflowing for a period of time, naturally cooling to room temperature and carrying out centrifuging separation to obtain black precipitation; and finally washing and drying the precipitation to obtain the antimony sulfide nano rod with the length of about 0.8-4.5mu m (micrometers), the diameter of 60-220nm (nanometers) and an orthorhombic phase and monocrystal structure. The method has the advantages of simple production equipment, safe production process, easily-controllable reaction parameters, high production efficiency, good dispersion performance of product particles for insusceptible aggregation, low implementation cost and easy industrial production. The invention can be widely applied to the preparation of a rod-shaped inorganic metal sulfur compound nanometer material.
Owner:XIANGTAN UNIV
TiO2/rGO composite material having high-efficiency electrocatalytic oxygen reduction performance
InactiveCN104607167AGuaranteed RestoreUniform particlesPhysical/chemical process catalystsCell electrodesHigh selectivityGraphite oxide
The invention relates to a TiO2 / rGO composite material having the high-efficiency electrocatalytic oxygen reduction performance, and belongs to the technical field of an electrocatalytic material. According to the composite material, anatase phase modified nano-TiO2 (N and F are co-doped in nano-TiO2 crystal lattices) is attached onto the surface of reduced graphene oxide, wherein the mole content of the reduced graphene oxide is 1.5-4.5%, and the mole contents of N and F in the modified nano-TiO2 are 1.07-1.19% and 0.95-1.04% respectively. Compared with simple modified nano-TiO2, the composite material has the high electrocatalytic oxygen reduction performance in an oxygen-saturated 0.1M KOH solution, the onset oxidation potential is about -0.2V, and the maximum oxygen reduction current can reach 10<-5>mA.cm<-2>. Besides, the composite material has the advantages of stable electrocatalytic oxygen reduction performance and high selectivity.
Owner:UNIV OF JINAN
Method for preparing fluorine modified zinc acrylate antifouling resin
InactiveCN102167774AReaction parameters are easy to controlReduce manufacturing costAntifouling/underwater paintsPaints with biocidesComposite materialPolymer chemistry
Owner:SHANGHAI UNIV
Preparation method of TiO2/rGO composite
InactiveCN104624220ARaw materials are cheap and easy to getSimple post-processingPhysical/chemical process catalystsCell electrodesAlcoholAmmonium fluoride
The invention relates to a preparation method of a TiO2 / rGO composite, and belongs to the technical field of electro-catalytic material preparation. The method comprises the step of keeping butyl titanate, oxidized graphene, absolute ethyl alcohol, glycol, urea and ammonium fluoride at a constant temperature being 190-230 DEG C for 8-12h under the condition of pH value being 1-4. The particle size of the TiO2 / rGO composite prepared by adopting the method is 3-5nm, and modified nano-TiO2 particles are uniformly attached to the surface of reduction-oxidation graphene. Compared with oxidized graphene, an oxygen-containing component of a carbon material in the reduction-oxidation graphene is reduced significantly; and N and F elements are doped in lattices of nano-TiO2 to form modified nano-TiO2, and the doping quantity is controllable. Raw materials are cheap and easy to obtain; the preparation operation is simple and easy; the aftertreatment process is simple; reaction parameters are easy to control; the flow is short; the energy consumption is low; and the electro-catalytic performance of the obtained composite is good.
Owner:UNIV OF JINAN
Graphene/antimony sulfide composite photocatalyst preparation method
InactiveCN105536819AFull photocatalytic degradationImprove visible light photocatalytic activityPhysical/chemical process catalystsAntimony potassium tartrateUltrasonic dispersion
The invention discloses a graphene / antimony sulfide composite photocatalyst preparation method. The method comprises adding graphene oxide into deionized water, carrying out ultrasonic dispersion, adding a sulfur source into the solution, carrying out ultrasonic treatment, adding antimony potassium tartrate into the solution, carrying out magnetic stirring to obtain a reaction mixture, carrying out hydro-thermal treatment on the reaction mixture, carrying out cooling, carrying out centrifugation to obtain black precipitates and washing and drying the black precipitates to obtain the graphene / antimony sulfide composite photocatalyst. The graphene / antimony sulfide composite photocatalyst has good compounding effects and high visible light photocatalytic activity and fully utilizes sun lights and indoor natural lights to realize photocatalytic degradation of environment pollutants. The preparation method has the advantages of simple processes, production process environmental friendliness, easy control of reaction parameters, low enforcement cost and excellent product quality and can be widely used for preparation of a graphene-based composite material.
Owner:XIANGTAN UNIV
CuO/rGO composite material having efficient electrocatalysis oxygen reducing performance
InactiveCN106654304ALow priceEfficient electrocatalytic oxygen reduction performanceMaterial nanotechnologyCell electrodesSolventOxygen
The invention relates to a CuO / rGO composite material having efficient electrocatalysis oxygen reducing performance and belongs to the technical field of electrocatalysis materials. Nano CuO particles are attached onto a reduced-oxidized graphene sheet layer, a mass ratio of nano CuO and rGO is 100:3-5, size of the nano CuO particles is 6-10nm, the reduced-oxidized graphene sheet layer is a single sheet layer, and the CuO / rGO composite material has electrocatalysis oxygen reducing performance. Compared with existing oxygen reducing reaction catalysts, the CuO / rGO composite material has the advantage that cost is lowered obviously; the CuO / rGO composite material is an oxygen reducing reaction catalyst low in cost and excellent in electrocatalysis oxygen reducing performance. The CuO / rGO composite material is synthesized by taking copper salt, hydroxide and graphene oxide as raw materials, deionized water and anhydrous alcohol as solvents and ethylene glycol as a dispersant and reductant and adopting a hydrothermal one-pot process. The raw materials are low in cost and easy to obtain, preparation operation is simple and easy to implement, aftertreatment process is simple, reaction parameters are easy to control, process is short, and energy consumption is low.
Owner:UNIV OF JINAN
Novel conductive glass fiber material and manufacturing method thereof
InactiveCN102690065AReaction parameters are easy to controlImprove antioxidant capacityGlass fiberDip-coating
The invention relates to a novel conductive glass fiber material and a manufacturing method of the novel conductive glass fiber material. The novel conductive glass fiber material is characterized in that an antimony-doped tin oxide conductive sol-gel coating layer with uniform and consistent thickness is arranged on an outer surface of a glass fiber. The preparation method comprises the following steps of: step 1, pre-treating the glass fiber by using a glass fiber cleaning and drying technology; step 2, preparing nanometer antimony-doped tin oxide sol by using a sol-gel method; step 3, coating sol on the pretreated surface of the glass fiber by using a sol-gel dip-coating method; and step 4, drying and annealing the glass fiber. According to the novel conductive glass fiber material provided by the invention, the glass fiber is finished by using an antimony-doped tin oxide finishing agent with good properties, so as to achieve good conductivity and transparency. Furthermore, the novel conductive glass fiber material is not limited by the weather condition and the using condition, and is durable. The manufacturing method provided by the invention uses a sol-gel reaction to achieve easily-controlled parameters and temper reaction conditions, and has the advantages of simple process, high production efficiency, stable product quality, low cost, applicability in scale production and the like.
Owner:JIANGSU SHUANGSHAN GRP
GaN-ZnO solid solution nanowire and preparation method and application thereof
ActiveCN106544729AUniform sizeHigh crystallinityPolycrystalline material growthFrom chemically reactive gasesNanowirePhotocatalytic water splitting
The invention discloses a GaN-ZnO solid solution nanowire and a preparation method and application thereof. The GaN-ZnO solid solution nanowire is 50-150nm in average diameter and 5-50micron in length, and the molar content of ZnO is 15-95%. The method includes: mixing GaN, Ga2O3 and ZnO powder, and adding into a container; mixing ZnO and graphite powder, and adding into another container; putting the two containers and a substrate into a small quartz tube with one end closed and one end open, putting the small quartz tube into a large quartz tube, vacuumizing, heating and feeding a carrier gas and nitrogen to obtain the solid solution nanowire growing on the substrate. The method is simple, reaction parameters are easy to control, the prepared GaN-ZnO solid solution nanowire is uniform in size, great in crystallization and excellent in performance in application as a catalyst to solar photocatalytic water splitting for hydrogen production, and the maximum hydrogen production rate reaches 1.3mmol.h<-1>.g<-1>.
Owner:THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
Preparation method of zinc copper sulfide flower-like micro-sphere super-structure visible-light-driven photocatalyst composed of nanosheets
InactiveCN108273521ASimple production processPromote safe productionWater/sewage treatment by irradiationWater contaminantsThioureaSuper structure
The invention provides a preparation method of a zinc copper sulfide flower-like micro-sphere super-structure visible-light-driven photocatalyst composed of nanosheets. The method comprises the following steps: respectively adding a zinc salt and a copper salt into o-hydroxyl diol, stirring and dissolving, adding thiourea, and continuously stirring until the thiourea is completely dissolved; adding polyvinylpyrrolidone (PVP), and performing stirring reflux at a temperature of 120-160 DEG C for 1-3 hours; naturally cooling to a room temperature, and performing centrifugal separation; washing and drying the obtained precipitate, thereby obtaining the flower-like micro-sphere super-structure visible-light-driven photocatalyst ZnxCu1-xS composed of nanosheets (x is more than or equal to 0.05 and less than or equal to 0.3). The product prepared by the method disclosed by the invention is large in specific surface area, high in photocorrosion resistance and high in visible-light photocatalytic activity, and environmental pollutants can be subjected to photocatalytic degradation by fully utilizing sunlight. The method has the advantages of being simple in production process, safe in production process, easily controllable in reaction parameters and capable of easily realizing large-scale industrialized production.
Owner:XIANGTAN UNIV
Method for modifying function gelatin
InactiveCN103319729AReduce moisture contentThe degree of hydrolysis side reaction is controllableAcetic anhydrideFreeze-drying
The invention relates to a method for modifying function gelatin. The method comprises steps of: (1) mixing and stirring 3,4-dihydroxybenzoic acid and an solvent (acetone) until the 3,4-dihydroxybenzoic acid is dissolved, adding acetic anhydride to carry out a reflux reaction, and separating the solvent here; (2) stirring and dispersing the product of the step (1) by trichloromethane, adding thionyl chloride to carry out a reflux reaction, and separating the solvent here, wherein the product here is a modifier; (3) heating swelling gelatin until the gelatin turns into a fusion state, adjusting the pH of the gelatin solution to an alkalescence condition by a NaOH solution, uniformly adding the modifier of the step (2) to the gelatin solution at the same time, and carrying out a reaction with stiring; and (4) precipitating the modified function gelatin solution by a sulfur acid solution, washing and fusing, adjusting the pH to 6.0-7.0, and freeze drying the solution here to obtain modified function gelatin. The gelatin modified by a 3,4-dihydroxybenzoic acid modifier provided by the invention is characterized in that, isoelectric points of the gelatin decrease to pH of 1.7-2.1, the gelatin forms a precipitate state in an artificial gastric juice with no disintegration, and the color presents uniform milk white or light red.
Owner:WUHAN INSTITUTE OF TECHNOLOGY
Efficient oxidation catalyst for diesel vehicle tail gas purification and preparation method and application thereof
ActiveCN104971735ALow costEasy to useDispersed particle separationMetal/metal-oxides/metal-hydroxide catalystsActive componentComposite oxide
The invention relates to an efficient oxidation catalyst for diesel vehicle tail gas purification and a preparation method and application thereof. The active component of the catalyst is a Cu-Mn-Ce-Zr composite oxide, the catalyst is of a mesoporous structure, and the loading capacity of Ce is 30% to 40%, the loading capacity of Mn is 60%-70%, the loading capacity of Cu is 0 to 10%, and the loading capacity of Zr is 0 to 3% in percentages by weight.
Owner:江苏先进无机材料研究院
Method for removing phenylurea herbicide chlortoluron in water by using ultraviolet/persulfate combined process
InactiveCN111943311AReduce concentrationEasy to operateWater/sewage treatment by irradiationWater treatment compoundsPersulfateUltraviolet
The invention relates to a method for removing a phenylurea herbicide chlortoluron in water by an ultraviolet / persulfate combined process. The method comprises the following specific steps: (1) pretreating a water sample containing impurities; and (2) adding a persulfate solution into the pretreated water sample, adjusting the pH value, and carrying out photodegradation on the water sample by using ultraviolet lamp illumination to remove the phenylurea herbicide chlortoluron in the water. Compared with the prior art, the chlortoluron removal effect can reach 99% or above, the concentration ofdegradation-resistant harmful substances in water is effectively reduced, operation is easy, reaction conditions are easy to control, adopted chemical reagents and materials are conventional productsfor water treatment, other toxic and harmful substances are not introduced, and the method is outstanding in safety and practicability. The reaction environment is easy to realize, treatment can be performed at room temperature, so that feasibility and operability of the method are effectively improved.
Owner:SHANGHAI INST OF TECH
Preparation method of acid-etched Ni, Co, Fe ternary metal hydroxide oxygen evolution catalyst
InactiveCN110586107AImprove conductivityHigh oxygen evolution reactivityMaterial nanotechnologyCell electrodesElectro catalystAcid etching
The invention relates to a preparation method of an acid-etched Ni, Co, Fe ternary metal hydroxide high-performance oxygen evolution catalyst, and specifically relates to a method that firstly a precursor is synthesized by using a hydrothermal method, and then the precursor is converted into the Ni, Co, Fe ternary metal hydroxide electro-catalyst with a relatively large specific surface area, moreactive sites, a nanosheet structure, and a large number of vacancies by an acid etching method. The acid-etched Ni, Co, Fe ternary metal hydroxide high-performance catalyst with the nanosheet structure and a large number of vacancies has the advantages of high reactivity, good electrical conductivity, high stability under alkaline conditions, and the like. The preparation method of the material is simple and easy, equipment is simple, the price of raw materials is low, and repeatability is good.
Owner:QINGDAO UNIV OF SCI & TECH
Preparation method of modified TiO2 with visible light response
InactiveCN103007977ASimple post-processingThe process steps are simplePhysical/chemical process catalystsOrganosolvReaction temperature
The invention relates to a preparation method of modified TiO2 with visible light response, and belongs to the technical field of photocatalytic materials. The preparation method is completed by adopting a one-step charge method and a one-step reaction through a constant temperature reaction at a temperature of 190-230 DEG C by using tetrabutyl titanate as a raw material, absolute ethyl alcohol as an organic solvent, urea and / or ammonium fluoride as a modifier and a hydrochloric acid solution or sulfuric acid solution as an acidity regulator. The preparation method is simple and practical in process steps, relatively low in reaction temperature and simple in post-treatment process. The preparation method has the advantages of easily obtained raw materials, easily controllable reaction parameters, short reaction flow and low energy consumption. The particle size of the modified TiO2 with visible light response is between 3 nm and 9 nm, the modified TiO2 with visible light response presents an anatase phase and has obvious absorption in a visible region at the wavelength of 400-600 nm, and the band gap energy is reduced to below 3.0 eV.
Owner:UNIV OF JINAN
Yttrium-doped lithium-rich manganese-based lithium ion battery positive electrode material, preparation method thereof and lithium ion battery
InactiveCN111082044AStable manufacturingImprove electrochemical performanceCell electrodesSecondary cellsPhysical chemistryManganese
The invention discloses an yttrium-doped lithium-rich manganese-based lithium ion battery positive electrode material, a preparation method thereof and a lithium ion battery. The yttrium-doped lithium-rich manganese-based positive electrode material is a layered material, the chemical general formula of the yttrium-doped lithium-rich manganese-based positive electrode material is Li1.2Ni0.2Mn<0.6-x>YxO2, and x is greater than 0 and less than or equal to 0.04. The preparation method comprises the steps of adding a lithium source, a nickel source, a manganese source and a yttrium source into analcohol solvent, dissolving and mixing to obtain a metal salt solution, and drying the metal salt solution to obtain an intermediate; heating and sintering the intermediate to obtain a sintered product; and cooling to obtain the yttrium-doped lithium-rich manganese-based positive electrode material. According to the invention, a high-temperature solid-phase method is adopted for preparation, the process is simple and convenient, reaction parameters are easy to control, powder particles are free of agglomeration, the filling property is good, and the yield is high; and the prepared structure isstable, good in cycle performance and excellent in rate capability, and can effectively inhibit capacity and voltage attenuation in the cycle process.
Owner:NANJING UNIV
Method and device for upgrading heavy oil raw materials by utilizing liquid-phase discharge in-situ hydrogenation
PendingCN110317636AImprove discharge efficiencyImprove light weight rateHydrocarbon oil crackingEnergy based chemical/physical/physico-chemical processesReduction rateCombustion
The invention discloses a method and device for upgrading heavy oil raw materials by utilizing liquid-phase discharge in-situ hydrogenation. The method comprises the steps that discharge is directly performed in a liquid, liquid-phase discharge hydrogen production is combined with liquid-phase discharge hydrogenation for upgrading heavy oil, a hydrogen production raw material is added into the heavy oil raw materials in a high electric field region of a reactor, liquid-phase high-pressure discharge plasma is utilized to simultaneously decompose the hydrogen production raw material and heavy oil molecules in different regions, active hydrogen free radicals are generated from the hydrogen production raw material in a plasma strong field region to rapidly react with the heavy oil molecules cracked by liquid-phase discharge, correspondingly hydrogen production, cracking of the heavy oil raw materials and in-situ hydrogenation are simultaneously carried out, and therefore the weight reduction of heavy oil is realized. The method has the advantages that in-situ hydrogen production and hydrogenation are realized, the reaction efficiency is high, and the weight reduction rate is effectively increased. Meanwhile, the device can be directly used for fuel oil modification in online application, and liquid and gas products generated by the device can be used as fuels for combustion withoutseparation.
Owner:DALIAN MARITIME UNIVERSITY
Method for preparing SnO2 micro-nanofiber
InactiveCN106811833AHigh viscosityImprove particle dispersibilityInorganic material artificial filamentsFiberHexamethylenetetramine
The invention discloses a method for preparing an SnO2 micro-nanofiber. The method comprises the following steps: adding tin salt and hexamethylenetetramine into a water and glycerin mixed solution, performing stirring to obtain a transparent solution, and after solvothermal reaction treatment, performing stirring and heat preservation at 80-90 DEG C to obtain a precursor solution; and after dissolving PVP and stearic acid in a water and DMF mixed solvent, slowly adding the obtained solution into the precursor solution to obtain a precursor spinning solution, selecting appropriate electrospinning parameters to obtain a precursor fiber, and performing heat treatment to obtain the final product. According to the method, the solvothermal method and the electrospinning method are combined to prepare the size-adjustable SnO2 micro-nanofiber formed by stacking of SnO2 micro-nanoparticles. The preparation process is simple and convenient, the reaction parameters are controllable, and the product appearance is obviously different from a fiber structure obtained by use of the pure electrospinning method. The obtained SnO2 micro-nanofiber has a broad application prospect in the fields of catalysis, gas sensitivity and the like.
Owner:UNIV OF JINAN
Preparation method of MOF-derived CoP hydrogen evolution catalyst
InactiveCN113265674AImprove conductivityImprove hydrogen evolution activityElectrodesPtru catalystPhysical chemistry
The invention provides a preparation method of an MOF-derived CoP hydrogen evolution catalyst, and particularly relates to a method which comprises the following steps: firstly, preparing an MOF structure ZIF-67, then carrying out oil bath on the ZIF-67 and cobalt nitrate hexahydrate to generate ZIF-67@Co, then calcining the ZIF-67 or the ZIF-67@Co to generate cobaltosic oxide and then performing phosphorizing or directly performing phosphorizing to obtain the MOF-derived CoP hydrogen evolution catalyst. The MOF-derived CoP hydrogen evolution catalyst prepared by the method disclosed by the invention has relatively high electro-catalytic hydrogen evolution activity and stability.
Owner:QINGDAO UNIV OF SCI & TECH
Preparation method of indium oxide with octahedral morphology
InactiveCN105129841AEasy to implementImprove product qualityGallium/indium/thallium compoundsOctahedronIndium tin oxide
The present invention relates to a preparation method of indium oxide with octahedral morphology, aims to solve the problems of difficult morphology control, complicated preparation process, higher synthesis temperature and longer reaction time of the preparation method of indium oxide with octahedral morphology in the prior art, and meanwhile provides a low-cost indium oxide octahedral structure material. The preparation method of the octahedral indium oxide structure is as follows: (1) a mixed solution of indium chloride and urea is prepared, ethylene glycol is added and dissolved, and by magnetic stirring, a homogeneous colorless and transparent solution is prepared; (2) the colorless and transparent solution is solvothermally reacted to collect a solvothermal product; (3) the solvothermal product is washed with absolute ethanol, centrifuged and dried to obtain a precursor; and (4) the indium oxide octahedral structure is obtained by calcination of the precursor. Advantages are that: the preparation method solves the difficult problem of product morphology control, is simple in process, low in synthesis temperature, and shorter in reaction time, so that the obtained product is low-cost, and has a wider range of application.
Owner:QINGDAO UNIV OF SCI & TECH
Solid solution nanowire as well as preparation method and application thereof
ActiveCN109706434AUniform sizeHigh crystallinityMaterial nanotechnologyChemical vapor deposition coatingNanowireSolid solution
The invention provides a solid solution nanowire as well as a preparation method and application thereof. The provided solid solution nanowire is InP-ZnSe solid solution nanowire. The preparation method comprises the following steps that (1) a catalyst covers a substrate, moreover, the substrate covered with the catalyst undergoes annealing to obtain an annealed substrate; (2) a mixture of the InPand the ZnSe is placed on one side of a quartz pipe with one end sealed and one end opened, the annealed substrate is placed on the other side of the quartz pipe, the quartz pipe is put into a reaction furnace, protective gas is introduced after vacuumizing is performed, chemical vapor deposition reaction is performed under a heating condition, the solid solution nanowire is obtained, wherein thetemperature of the mixture of the InP and the ZnSe is higher than the temperature of the annealed substrate. The provided solid solution nanowire is uniform in size, good in crystallinity, high in migration rate, adjustable in size of a band gap and can be used in a device, and the use amount of the rare metal In is reduced.
Owner:THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
Preparation method of 4-amino-6-tert-butyl-3-methylthio-1,2,4-triazin-5(4h)-one
The invention discloses a preparation method of 4-amino-6-tert-butyl-3-methylthio-1,2,4-triazin-5(4H)-one. The molar ratio is 1:1.1~1.4 : 1.5-2 4-amino-6-tert-butyl-3-mercapto-1,2,4-triazin-5(4H)-one, dimethyl sulfate and anhydrous sodium carbonate, solvent acetone, catalyst potassium iodide , keep warm at 15-45°C for 2-4 hours, finally recover acetone, add water to precipitate, separate and dry to obtain 4-amino-6-tert-butyl-3-methylthio-1,2,4-triazine -5(4H)-one. The raw materials used in the method of the present invention are easy to get, and the price is low; The method of the present invention has mild reaction, easy control of reaction parameters, and can ensure the safety of the production process; Potassium iodide is used as the catalyst, which makes the rapid reaction complete at normal temperature, greatly reducing the Its production cycle effectively reduces the production cost; the product yield is high, reaching over 90%, and products with a content of over 96% can be directly obtained, which meets the requirements of industrial production and has a good application prospect.
Owner:JIANGSU REPONT PESTICIDE FACTORY
Preparation method of granular nickel iron cobalt ternary metal hydroxide high-performance oxygen evolution catalyst
InactiveCN110560068AImprove conductivityHigh oxygen evolution activityCell electrodesMetal/metal-oxides/metal-hydroxide catalystsNitrateOxygen evolution
The invention relates to a preparation method of a granular nickel iron cobalt ternary metal hydroxide high-performance oxygen evolution catalyst, particularly to one-step synthesis by hydrothermal process. The specific preparation process includes: weighing 5.463g of nickel nitrate (H12N2NiO12), 2.517g of ferric nitrate (H18FeN3O18) and 0.604g of cobalt nitrate (CoH12N2O12), and dissolving the substances in 30mL of deionized water, dissolving 2.304g of sodium hydroxide (NaOH) and 2.544g of sodium carbonate (Na2CO3) in 30mL of deionized water, then intensely stirring the two solutions, carrying out reaction at 70-90DEG C under a hydrothermal condition for 48h, centrifuging the obtained precipitate, and performing drying at 60DEG C for 24h. The obtained granular nickel iron cobalt ternary metal hydroxide oxygen evolution catalyst has the advantages of high oxygen evolution activity, good electrical conductivity, high stability under alkaline conditions and the like. The preparation method of the material provided by the invention is simple, and equipment is simple; the raw materials are low in price, and the repeatability is good.
Owner:QINGDAO UNIV OF SCI & TECH
Method for producing ethyl phosphate with high purity
InactiveCN1415616AMild operating conditionsReaction parameters are easy to controlPhosphorus organic compoundsSodium carbonateEthyl phosphate
A process for preparing high-purity triethyl phosphate includes such steps as esterifying reaction between absolute alcohol and phosphorus trioxychloride at 20-30 deg.C, removing alcohol under 0.098 MPa for 1-1.5 hr, neutralizing by adding sodium carbonate while stirring to pH 6-7, and distilling. Its advantages are high purity and output rate and low cost.
Owner:无锡市红星化工厂
Modification method of gelatin
The invention provides a modification method of gelatin, and belongs to the technical field of biomedical materials. The preparation method comprises the following steps: carrying out chemical modification by introducing crosslinkable functional groups into gelatin to obtain modified gelatin methacrylate, further reacting a second compound containing intramolecular anhydride functional groups withamino groups in the modified gelatin methacrylate, and introducing carboxyl groups to prepare the gelatin derivative material modified by two anhydrides. Gelatin molecules contain a large number of active functional groups such as amino groups and hydroxyl groups, so that reactive functional groups can be introduced and the solubility can be improved through the chemical modification method.
Owner:深圳大洲医学科技有限公司
Preparation method of rodlike rutile nano TiO2
InactiveCN102992399ASimple post-processingThe process steps are simpleTitanium dioxideReaction temperaturePhysical chemistry
The invention relates to a preparation method of rodlike rutile nano TiO2, belonging to the technical field of new material preparation. The preparation method comprises the following steps of: with tetrabutyl titanate as a raw material, deionized water as a solvent, ethylene glycol as a dispersing agent and hydrochloric acid as an acidity regulating agent, carrying out constant-temperature reaction at 190-230 DEG C, and preparing the rodlike rutile nano TiO2 by adopting a one-step charging and one-step reacting synthesis method. According to the preparation, the material mixing procedure is simplified, the reacting temperature is fixed, the reaction procedure is shortened, and the preparation cost is lowered. The rodlike rutile nano TiO2 prepared by adopting the preparation method has a diameter being about 20nm and length being 100-250nm.
Owner:UNIV OF JINAN
Preparation method of antimony sulfide nano rod
InactiveCN101786661BUniform size distributionControl size distributionNanostructure manufactureAntimony compoundsSingle crystalAntimony
The invention provides a preparation method of an antimony sulfide nano rod, which comprises the following steps: firstly, adding Sb2O3 into o-hydroxy diol and evenly stirring; secondly, adding sulphur powder and a surfactant for evenly stirring; thirdly, adding sodium borohydride and stirring and reflowing for a period of time, naturally cooling to room temperature and carrying out centrifuging separation to obtain black precipitation; and finally washing and drying the precipitation to obtain the antimony sulfide nano rod with the length of about 0.8-4.5mu m (micrometers), the diameter of 60-220nm (nanometers) and an orthorhombic phase and monocrystal structure. The method has the advantages of simple production equipment, safe production process, easily-controllable reaction parameters, high production efficiency, good dispersion performance of product particles for insusceptible aggregation, low implementation cost and easy industrial production. The invention can be widely applied to the preparation of a rod-shaped inorganic metal sulfur compound nanometer material.
Owner:XIANGTAN UNIV
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