84results about How to "Suitable for scale-up" patented technology

Disclosed are a lithium secondary battery comprising a fibrous membrane/electrode composite in which an ultra-fine fibrous porous polymer membrane is combined with an electrode into one body and a hybrid type polymer electrolyte in which pores of the ultra-fine fibrous porous polymer membrane is impregnated with an organic electrolyte solution or a polymer electrolyte; and a fabrication method thereof.

The invention belongs to the technical field of advanced nanocomposites, and particularly relates to a magnetic mesoporous silica nanochain with a core-shell structure and a preparation method of thenanochain. The method comprises the following steps of firstly, coating a layer of amorphous silica on the surface of magnetic inorganic nanoparticles by using a sol-gel chemical synthesis method, andinducing oriented arrangement of the magnetic inorganic nanoparticles to form a one-dimensional core-shell structure nanochain through applying an external magnetic field; secondly, utilizing an organic surfactant as a self-assembly behavior of a structure-directing agent and an inorganic species in solution, and coating a layer of silica/surfactant composite on the surface of a magnetic inorganic nanoparticle/silica composite nanochain through an organic chambering solvent; and finally, removing the surfactant through solvent extraction in order to obtain a magnetic inorganic nanoparticle/silica core-shell structure nanochain composite with ordered mesoporous vertical divergence pore channels. The nanochain has a relatively high specific surface area, a large pore size, good magnetic responsiveness and biocompatibility, and a wide application prospect in the aspects of biological separation, adsorption, drug loading and the like.

A composite hollow fibre membrane based on the composite resistance Henis membrane model (silica rubber/polysulfone membrane) for separating H2 or N2 with high effect is composed of basic membrane, water-soluble high-molecular layer in rubber state at ordinary temp and silica rubber layer. It can be used for the ammonia synthesizing plant or oil refinary to recover N2 or H2. Its preparing process is also disclosed.

A purified antibody, or an antigen-binding fragment thereof, is provided that binds selectively to a protein specific to an X-chromosome of a mammalian sperm cell. The sperm cell protein comprises an amino acid sequence set forth in SEQ ID NOs: 4 and 9-16. The antibody or antigen-binding fragment thereof may be derived by immunization of a host by an antigenic peptide composition comprising one or more natural or synthetic antigenic peptide sequences set forth as SEQ ID NO: 1, SEQ ID NO: 2, SEQ ID NO: 3, and SEQ ID NOs: 4 and 9-16. The antibody finds utility in identifying an X-chromosome bearing sperm cell population, and in methods for skewing a sex ratio in mammals.

The invention discloses an aluminum modified Fe3O4 magnetic material and a preparing method and application thereof and belongs to the fields of preparation and organic catalysis of magnetic catalysts. The aluminum modified Fe3O4 magnetic material is obtained through in situ synthesis by means of the solvothermal method, and is used as a catalyst to catalyze H2O2 in a water phase and oxidize benzyl alcohol selectively so as to prepare benzaldehyde. The raw materials of the prepared catalyst are cheap and easy to obtain, and operation is easy and convenient. A catalytic reaction system for synthesizing benzaldehyde is environmentally friendly, the yield of benzaldehyde is high (43.7%), and magnetic separation recovery and regeneration cyclic use of the catalyst are easy to achieve; furthermore, no byproduct containing chlorine exists in benzaldehyde, so that application in the fields such as spice and medicine is possible, and application prospects are broad.

The invention discloses a preparation method of an Nb3O7F nanoarray/graphene heterojunction composite material. The preparation method comprises the following steps: preparing a graphene water solution, stirring, and carrying out ultrasonic stripping until graphene forms uniform dispersion liquid; adding hydrofluoric acid into the dispersion liquid, simultaneously carrying out stirring and ultrasonic treatment so as to adequately etch the surface of stripped graphene to form a carbon-fluorine bond; weighing NbCl5 powder, adding the NbCl5 powder into the solution, adequately stirring, adding hydrofluoric acid, and continuing to adequately stir; transferring the solution into a reaction kettle with a Teflon liner, and carrying out hydrothermal reaction; after the reaction is finished, carrying out centrifugal separation on a product, washing by virtue of deionized water and absolute ethyl alcohol, and drying in a drying oven; and carrying out thermal treatment on the dried product to remove organic matters, so as to finally obtain the Nb3O7F nanoarray/graphene heterojunction composite material. The preparation method has the beneficial effects that the process is simple, the operation conditions are easily controlled, and the low-temperature preparation of the graphene heterojunction material is realized.

The invention belongs to the technical field of polymer composite materials, and relates to a polyvinyl alcohol composite material with ultraviolet blocking and antibacterial functions and a preparation method thereof, wherein the polyvinyl alcohol composite material is prepared from the following raw materials: polyvinyl alcohol, and cobalt complex crystal [Co4(H8P3NC3O9)2].H2O, wherein in the formula, (H8P3NC3O9) is an anion of amino trimethylene phosphonic acid losing four protons. The invention also provides the preparation method of the polyvinyl alcohol composite material. The polyvinyl alcohol composite material prepared by the preparation method has excellent ultraviolet blocking property, antibacterial property, ammonia response property, mechanical property, water vapor permeability and thermal stability, can maintain high optical transparency, is simple in preparation process, is suitable for large-scale production, and has potential application value in the fields of packaging, antibacterial materials, ammonia gas detection and the like.

The invention provides a large area nitrogen-doped carbon nano-tube paper preparation method, which comprises: (1) weighing ferrocene powder, dissolving in dichlorobenzene to form a ferrocene/dichlorobenzene carbon source solution, weighing pyridine, and mixing the pyridine and the ferrocene/dichlorobenzene carbon source solution to form a ferrocene/dichlorobenzene/pyridine mixing carbon source solution; 2) coiling an iron sheet or copper sheet substrate into a cylindrical material, placing into the quartz reaction chamber of a reaction furnace, sealing the reaction chamber, introducing argon gas to completely discharge air, and heating the reaction furnace; 3) when the temperature of the reaction chamber achieves 750-900 DEG C, adjusting the argon flow rate while introducing hydrogen; 4) injecting the ferrocene/dichlorobenzene/pyridine mixing carbon source solution into the reaction chamber, and carrying out a reaction; and 5) stopping the heating of the tubular reaction furnace, closing the hydrogen, adjusting argon flow rate to make the product be cooled to a room temperature along with the furnace, and collecting the large area nitrogen-doped carbon nano-tube paper on the substrate. According to the present invention, the nitrogen-doped structure carbon nano-tube film two-dimensional structure and the simple, rapid and large-scale preparation method can be used for the fields of new energy sources, sensors, flexible electronic devices, and the like.

The present invention relates to a novel process for the synthesis of everolimus of formula (I): and intermediates thereof.

The invention discloses a cellulose acetate nano composite material with ultraviolet shielding and bacteriostatic properties and a preparation method thereof. The cellulose acetate nano composite material is composed of the following components by weight: 96-99.5 parts of cellulose acetate and 0.5-4 parts of copper complex modified halloysite. The copper complex modified halloysite is used as a modifier, so that the performance of the cellulose acetate can be effectively improved. The cellulose acetate nano composite material prepared by the invention has excellent ultraviolet shielding performance, bacteriostatic performance, thermal stability, water vapor barrier property, low hygroscopicity and low cytotoxicity, can keep high optical transparency, and is simple in preparation process, environment-friendly, low in cost, suitable for large-scale production, and has good application prospects in the fields of packaging, ultraviolet protection and the like.

The invention belongs to the technical field of advanced materials, and particularly relates to a hollow TiO2@C composite microsphere and a preparation method thereof. The preparation method comprisesthe following steps: dispersing silicon dioxide nanospheres in an organic solvent containing a surfactant and an alkali catalyst under the action of ultrasonic waves, adding a titanium source, and carrying out hydrolysis and polycondensation to obtain a SiO2@TiO2 core-shell structure compound; dispersing the compound into a strong alkali solution, and carrying out hydrothermal etching assisted crystallization to obtain titanate with a hollow structure; and finally, dispersing titanate into a carbon source aqueous solution, carrying out hydrothermal reaction, and roasting in an inert atmosphere to obtain the hollow TiO2@C composite microspheres constructed by the nanosheets. The composite microsphere has a double-shell hollow structure, and has large specific surface area, pore volume andpore diameter. The material is applied to a negative electrode of a sodium-ion battery, and shows excellent rate capability and pseudocapacitance characteristic. The raw materials are easy to obtain,the method is simple, and the product has wide application prospects in the fields of environment, energy, catalysis and the like.

The invention belongs to the technical field of polymer composite materials, and relates to a multifunctional polyvinyl alcohol nano composite material and a preparation method thereof. The multifunctional polyvinyl alcohol nano composite material is prepared from the following raw materials: polyvinyl alcohol and modified cellulose nanocrystals. The invention also provides a preparation method of the multifunctional polyvinyl alcohol nano composite material. The prepared multifunctional polyvinyl alcohol nano composite material has excellent ultraviolet shielding performance, antibacterial performance, ammonia response performance, mechanical performance, water vapor permeability and thermal stability. Meanwhile, high optical transparency can be kept, the preparation process is simple, environmentally friendly and low in cost, and the multifunctional polyvinyl alcohol nano composite material is suitable for large-scale production, and has good application prospects in the fields of packaging, ultraviolet protection and the like.

The invention relates to a preparation method of a composite bone tissue engineering stent material. The preparation method comprises the following steps: 1) preparing zinc ion sustained-release hydroxyapatite; 2) adding the zinc ion sustained-release hydroxyapatite obtained in the step 1) to a chitosan solution, stirring and mixing uniformly and adjusting the pH to obtain a chitosan/hydroxyapatite suspension; 3) slowly adding the suspension obtained in the step 2) to a silk fibroin solution to obtain a mixture; 4) injecting the mixture obtained in the step 3) into a mold, conducting freeze drying, immersing the mold in an anhydrous methanol and sodium hydroxide solution h, rinsing with deionized water and conducting freeze drying again to obtain a final composite stent material. The composite bone tissue engineering stent material has good biocompatibility, degradable controllability and good formability, and can be used for treating bone defects.