113results about How to "The preparation method is simple and safe" patented technology

The invention relates to the technical field of aerogels. In order to solve the problem that no simple preparation technique for controlling the pore size and surface properties of the three-dimensional graphene can implement effective control on the structural dimension, lamellar action mode, interface properties and the like of the three-dimensional graphene, the invention provides a preparation method of a silane functionalized graphene aerogel material. The method comprises the following steps: preparing a functionalized graphene hydrogel, and preparing the functionalized graphene aerogel. The preparation process is nontoxic and pollution-free. The prepared graphene aerogel can be used in the fields of oil-water separation, pressure-sensitive / gas-sensitive, polymer nano composite materials and the like.

The invention discloses a calcium alginate fiber and a preparation method thereof. The fiber is calcium alginate hydrogel with a porous structure, a rodlike structure or a rodlike and porous compound structure; the diameter of the fiber is 100-500mu m. According to the preparation method, on the basis of the action of hydrodynamics and by use of the chemical principle that sodium alginate reacts with calciumchloride to generate the calcium alginate hydrogel and the design of a microfluid device, sodium alginate solution and calciumchloride solution are mixed to generate gelation reaction; fibers with different structures and different sizes are generated by adjusting the flow velocity of internal-phase fluid. The preparation method disclosed by the invention has the advantages of simplicity, safety, lower cost and strong experimental repeatability; in the preparation process, a high-voltage electric field is not mentioned, so that the damage to cells is avoided and cell encapsulation can be realized. The prepared fiber structure has the advantages of uniformity, size controllability, good biocompatibility and broad application prospect; the prepared fiber structure can be directly applied to the fields of biomedicines such as cell culture and drug delivery.

The invention relates to a preparation method of nitrogen doped and graphene loaded Cu-Cu2O nanocomposites. Copper phthalocyanine is used for providing a nitrogen source and a copper source, and the high-heat treatment is performed on mixed powder of the copper phthalocyanine and oxidized graphene in an argon atmosphere, so as to prepare the nitrogen doped and graphene loaded Cu-Cu2O nanocomposites. In the prepared nitrogen doped and graphene loaded Cu-Cu2O nanocomposites, Cu-Cu2O nanoparticles are loaded on nitrogen doped graphene sheets. The preparation method provided by the invention has the advantages of safety and simplicity, the yield is high and the recurrence and the industrial production are easy. The nitrogen doped and graphene loaded Cu-Cu2O nanocomposites which are produced by adopting the preparation method have good application prospects and economic values in aspects of photocatalysis, oxygen catalysis, supercapacitors and the like.

The invention relates to the field of flexible wearable heating materials, in particular to a preparation method of a radiation-heatable MXene / polymer composite material. The preparation method comprises the following steps: carrying out surface hydroxylation treatment or polarity modification treatment on a polymer material, washing with deionized water, and drying to obtain a pretreated polymer material; and uniformly spraying an MXene solution on the pretreated polymer material, and drying to obtain the radiation-heatable MXene / polymer composite material. The preparation method is simple and safe, conditions are mild, and large-scale batch preparation can be achieved; the prepared MXene / polymer composite material has three heating modes of radiation heating, electric heating and light heating, the highest temperature in the radiation heating mode can reach 45.2 DEG C, the highest temperature in the electric heating mode can reach 85.0 DEG C, the highest temperature in the light heating mode can reach 90.0 DEG C, and the method has huge application value in the field of new-generation energy-saving heating flexible heat preservation fabrics or films.

The invention discloses a konjac glucomannan glycosyl antibacterial hydrogel fiber and a preparation method thereof. The fiber comprises the following raw material components in parts by weight: 50-100 parts of konjac glucomannan polymerizable monomers, 100-800 parts of alginate, 10-20 parts of organic guanidine salt polymerizable monomers, 10000-40000 parts of deionized water and 0.1-5 parts of an initiator. The preparation method comprises the following steps: (1) preparing modified konjac glucomannan with double bonds on side groups and the organic guanidine salt polymerizable monomer; (2)preparing a spinning liquid; and (3) preparing a hydrogel fiber by using a two-step crosslinking method. The preparation method disclosed by the invention is simple and safe, low in cost, rich in material and good in experiment repeatability; no high-voltage electric field is used in the preparation process, no organic solvent is used, no pollution can be caused, cell damage can be avoided, and cell packaging can be achieved; the prepared hydrogel is not only uniform, controllable in size, high in mechanical property and good in water absorption performance, but also good in biocompatibility,and has an excellent antibacterial property and a wide application prospect, particularly in the field of sanitary materials.

The invention discloses a method for preparing WO3 nanocrystalline. The method comprises the following steps: firstly preparing a poly tungstic acid peroxide solution by adopting a peroxidation method, adding a non-ionic surfactant, giving fully play to a precursor by refluxing, and finally carrying out direct high temperature calcination on the prepared sol, thus a high quality WO3 nanocrystalline material is obtained. The invention has the advantages that: the preparation method is simple, the cost is low, the prepared WO3 nanocrystalline has high crystallization quality and good dispersibility, and the industrial production in batch can be realized. The WO3 nanocrystalline material prepared by the invention is a gas-sensitive material with high detection performance to low concentration acetone, can be developed to be a detector material for acetone and can be especially applied to a device for diagnosing diabetes by adopting a breathing pattern.

The invention discloses a newly separated pig Getah virus HNJZ-S1 strain. The microbial preservation number of the pig Getah virus HNJZ-S1 strain is CGMCC NO 12550; the pig Getah virus is separated from a naturally infected pig group for the first time in China, and has good immunogenicity. The invention also discloses a vaccine composition which is prepared from the pig Getah virus HNJZ-S1 strain, and a preparation method thereof. The vaccine composition contains inactivated pig Getah virus strain HNJZ-S1 strain and a pharmaceutically acceptable adjuvant; the preparation method for the vaccine composition comprises the steps of virus culturing, virus liquid inactivating, aqueous phase preparing, oil phase preparing emulsifying and the like. The vaccine composition has good immunogenicity, and can produce high immunity after immunization; the attacking protecting rate is high; after inoculation, the abortion rate and the stillbirth rate of sows are obviously reduced; the incidence of piglets is remarkably reduced; the popularizing and spreading of the pig Getah virus can be effectively prevented; the vaccine composition has a broad application prospect.

The invention provides alcohol acid ripple finish and a preparation method thereof. The alcohol acid ripple finish comprises, by weight, 50-60 parts of alcohol acid ripple resin (having solid content of 60+ / -3wt%), 5-10 parts of polymerized oil pattern-adjustment resin, 2-3 parts of carbon black, 20-35 parts of light calcium, 0.5-1.5 parts of bentonite HFGEL-40A, 1-2.5 parts of lead naphthenate having the content of 10%, 2-3.5% of cobalt naphthenate having the content of 4%, 0.1-0.3 parts of an anti-skinning agent and 5-10 parts of toluene. The anti-skinning agent is methyl ethyl ketoxime, butyraldehyde oxime or cyclohexanone-oxime and is obtained by mixing. The film of the alcohol acid ripple finish has excellent characters, realizes a flexible change of ripple patterns according to user demands and can be prepared by a simple method.

The invention relates to the technical field of medicine, and particularly relates to a curcumin compound injection and an intravenous injection preparation thereof. The curcumin compound injection mainly comprises a curcumin compound, a solvent for injection and a small amount of pH regulator. The curcumin compound intravenous injection preparation is used only by mixing the curcumin compound injection and an emulsifier in a volume ratio of (1:5)-(1:250). After the curcumin compound injection and the emulsifier are mixed, the drug loading rate of the curcumin compound in the intravenous injection preparation is up to 1.5 mg / ml, and no crystal is separated out within 18 hours. The curcumin compound injection provided by the invention has a simple and safe preparation method and good stability, and is convenient for storage and transportation. The curcumin compound intravenous injection preparation has good stability due to the use of the emulsifier as a carrier solvent, and has no toxic and adverse effects. The invention solves the problem that the curcumin compound can not be prepared into the intravenous injection preparation and applied in clinics for a long period of time.

The invention relates to a preparation method of an apremilast B crystal form, and particularly relates to a preparation method of a high-purity apremilast B crystal form. The preparation method specifically comprises the following steps: (a) preparing an apremilast C crystal form; and (b) converting the C crystal form into a B crystal form. The HPLC purity of the apremilast B crystal form prepared by using the preparation method is greater than 99.9%, the maximum individual impurity is less than 0.1%, and the chiral purity is greater than 99.8%; and the preparation method is safe, simple, and strong in operability.

The invention specifically relates to a fluorescence carbon spot as well as a preparation method and application thereof and belongs to the field of novel nano material preparation. The fluorescence carbon spot preparation method disclosed by the invention comprises the specific steps: cleaning leaves, putting in an oven to be dried and smashing and screening to obtain leaf powder; adding deionized water into the leaf powder, then adding a polyethyleneimine solution into a magnetic stirring process and continuing magnetically stirring under the room temperature; centrifuging, collecting supernatant and filtering and dialyzing the supernatant to obtain fluorescence carbon spot dispersion liquid. The preparation method disclosed by the invention has simpleness, convenience and safety; meanwhile, use of expensive instruments is reduced; the raw materials are low in cost, environmentally friendly and renewable. The fluorescence carbon spot disclosed by the invention has the advantages of uniform particle size and evenness in dispersion; the fluorescence carbon spot has high detection flexibility to bovine hemoglobin, a linear range is 0 to 54 mu g / L, a complex modified process is avoided, a detection method is simple, and good optical detection capacity is achieved. The fluorescence carbon spot disclosed by the invention has a wide application prospect in detecting bovine hemoglobin.

The invention discloses a green and environment-friendly solid dispersion taking porous starch as a carrier and a preparation method thereof. The green and environment-friendly solid dispersion comprises porous starch and drug components, wherein the porous starch is used as the carrier; the drug components are uniformly distributed in the surface and the pores of the porous starch; the mass ratio of the porous starch to the drug components is (4 to 1)-(12 to 1). The preparation method of the solid dispersion comprises the step of uniformly distributing the drug components in the surface and the pores of the porous starch through physical and mechanical force to form the green and environment-friendly solid dispersion taking the porous starch as the carrier. Through the green and environment-friendly solid dispersion, the solubility of insoluble drugs can be effectively improved; the in-vitro solubility of the insoluble drugs is more excellent; the green and environment-friendly solid dispersion has the advantages of uniform dispersion and high stability, is green and environmentally friendly, and is easy to realize industrialization.

The invention discloses a preparation method of hydrophobic white carbon black. Hydrophilic white carbon black is treated by a modifier with a surface treatment process, affinity between surface groups of white carbon black and polyether modified silicone oil is improved, a mixture obtained after hydrophobic white carbon black and the polyether modified silicone oil are mixed can inhibit sedimentation, and appearance and application performance of a defoaming agent are improved, so that balance of excellent defoaming property and lasting foam inhibition property is achieved; the preparation method is simple and safe, a few steps are needed, and the process is simple.

The invention relates to the technical field of medicament, in particular relates to a resveratrol injection solution and an intravenous injection thereof, wherein the resveratrol injection solution mainly comprises resveratrol, an injection solvent and a small amount of pH conditioning agent. The resveratrol intravenous injection is prepared by evenly mixing the resveratrol injection solution and the emulsion according to the volume ratio being 1:5 to 1:250 when in use. After the resveratrol injection solution and the emulsion are mixed, the drug loading rate of the resveratrol in the intravenous injection can achieve 1.5mg / ml, and the resveratrol can not be crystallized and separated out within 18 hours. The preparation method of the resveratrol injection solution is simple and safe, the solution has good stability and is convenient to store and transport, the resveratrol intravenous injection has good stability and no toxic and side effects by taking the emulsion as a carrier solution medium. According to the invention, the problem that the resveratrol can not be prepared into the intravenous injection and applied clinically for a long term is solved.

The invention discloses a preparation method of a polymer anion exchange membrane. The method comprises the following steps: 4,4'-difluoro benzophenone, hydroquinone with one or more methyl groups or a derivative of hydroquinone with one or more methyl groups, and alkali metal carbonate with a mass ratio of 1:1:1.1-1.2 are dissolved in a mixed solvent of N-methylpyrrolidone and toluene; the mixture is subjected to a reaction under high temperature, such that a polymer containing methyl group is obtained; the polymer with methyl group, bromosuccinimide and an initiator with a mass ratio of 1:0.5-0.8:0.01-0.015 are dissolved in chloroform; heating and reflux suction filtration are carried out; a mixture obtained after suction filtration is added into a precipitating agent, and precipitation is carried out, such that a brominated polymer is obtained; the brominated polymer is subjected to a quaternization treatment and is cast into a membrane; and the membrane is heated and dried, such that the polymer anion exchange membrane is obtained. The method is simple and highly efficient. The obtained polymer anion exchange membrane has high ion exchange capacity, high chemical stability, high thermal stability, and excellent mechanical properties.

The invention belongs to the field of materials, and particularly relates to a CO2 gas-sensitive material for respiratory gas detection and a preparation method thereof. The material is a ZnSnO3 nano-particle cluster material. The preparation method comprises the following steps: (1) dissolving tin salt, zinc salt, sodium hydroxide, polyvinylpyrrolidone and hydrogen peroxide in deionized water, and magnetically stirring at room temperature to obtain a mixed solution; (2) transferring the mixed solution into a stainless steel high-pressure reaction kettle with a polytetrafluoroethylene lining, carrying out sealed reaction, naturally cooling to room temperature after the reaction is finished, centrifuging, washing and drying to obtain a precursor material; and (3) drying the precursor material in air, and then naturally cooling to room temperature to obtain the ZnSnO3 nano-particle cluster material. The the ZnSnO3 nano-particle cluster material is prepared by a hydrothermal method; according to the material, the large specific surface area is obtained, the band gap width of the ZnSnO3 nano material is reduced, the electron mobility is improved, and the preparation method is simple, convenient, safe, low in cost and high in practicability.

The invention discloses an acetone gas sensitive material and a preparation method thereof. The material has the following structure: CuxZn (1-x) Fe2O4, x = 0.25-1, the copper-zinc mixed ferrite hollow sphere acetone gas sensitive material is prepared by adopting a one-step solvothermal method and high-temperature heat treatment, and the novel spinel structure gas sensitive material is successfully obtained by gradually replacing Zn ions with Cu ions. The preparation method is simple, efficient and safe, the cost is low, the practical application value is high, according to the gas sensitive material, cation redistribution is realized, a hollow structure is realized, compared with a zinc ferrite hollow ball, the mixed spinel structure gas-sensitive material and CuFe2O4 hollow spheres showmore excellent gas-sensitive performance on low-concentration acetone at a relatively low temperature (125 DEG C), including high sensitivity, quick response and excellent selectivity, and show a wideapplication prospect in the field of quick nondestructive detection of respiratory gas (acetone) of diabetic patients.

The invention discloses a preparation method of a graphene-based photocatalytic material, which comprises the steps of preparing graphene oxide, synthesizing titanium dioxide / molybdenum disulfide / graphene composite hydrogel and crystallization of a catalyst; the raw materials comprise graphite powder, concentrated sulfuric acid, potassium permanganate, aqueous hydrogen peroxide solution, hydrochloric acid, anhydrous ethanol, deionized water, sodium molybdate, L-cysteine, titanium sulfate and glucose. The graphene-based photocatalyst prepared by the method has the advantages of uniform pore size, high crystallinity, large specific surface area, high separation efficiency of photogenerated carriers, and the preparation method is safe, simple and easy to operate.

The invention discloses a Co-Mo bimetallic nitride oxygen reduction catalyst as well as a preparation method and application thereof. The preparation method comprises the following steps of: controlling the addition amount of ammonia water in a mixed solution of cobalt salt and molybdenum salt, preparing a bimetallic oxide precursor by using a hydrothermal method, and calcining the precursor in ammonia gas at high temperature to obtain the Co-Mo bimetallic nitride. The preparation method disclosed by the invention is simple, high in yield, strong in universality and easy for industrial production, the morphology of the precursor is easy to regulate and control, and the prepared oxide precursor and nitride are relatively pure in phase and free of other impurities. The Co-Mo bimetallic nitride disclosed by the invention is used as a cathode oxygen reduction catalyst, shows relatively good oxygen reduction performance, has excellent methanol tolerance and stability, and is suitable for the fields of fuel cells and the like.

This invention discloses a novel natural anti-tumor compound with novel molecular frame and high anti-tumor activity. The novel natural anti-tumor compound is derived from waxmyrtle. This invention also discloses its preparation method. The method comprises: lixiviating waxmyrtle coarse powder, vacuum-concentrating, dispersing in water, extracting with an appropriate organic solvent, separating, and purifying to obtain the compound. The compound has wide applications in anti-tumor drugs.

The invention relates to a molybdenum carbide catalyst for hydrogen generation of methanoic acid and a preparation method of the molybdenum carbide catalyst, belonging to the technical fields of energy catalysis materials and hydrogen preparation. According to the molybdenum carbide catalyst and the preparation method thereof, with one or more of carbon nanotubes, active carbon granules, honeycomb ceramics, carbon fiber felts and kieselguhr as carriers and molybdenum carbide as an active component, one or more than two of Co, Ni, K, Ce and Cu is subjected to metal modification. With the mass of the carrier as a reference, the active components and the metals are respectively 0.1-50 percent and 0.001-50 percent by mass. The molybdenum carbide catalyst has the advantages of safe and simple preparation process, large specific surface area, less surface carbon deposition, rich catalyst property similar to that of noble metals, high efficiency of catalyzing the methanoic acid for hydrogen generation, long service life and the like; and the new application field of hydrogen generation by using the methanoic acid under the catalysis of the molybdenum carbide is developed.

The invention provides a preparation method of an MIL-125 loaded 1T-phase molybdenum sulfide composite photocatalyst. The preparation method comprises the following steps: preparing a black solution from ammonium molybdate and thiourea; washing with the black solution, and drying to obtain molybdenum sulfide powder; adding butyl titanate and 2-aminoterephthalic acid into a mixed solution of an N, N-dimethylformamide solution and methanol to obtain a mixed solution; carrying out hydrothermal reaction on the mixed solution to obtain a reacted solution; washing the reacted solution, and separating to obtain a precipitate; and drying the precipitate to obtain the MIL-125 loaded 1T-phase molybdenum sulfide composite photocatalyst. The invention also provides an application of the MIL-125 loaded 1T phase molybdenum sulfide composite photocatalyst. The preparation method of the composite photocatalyst provided by the invention is simple, the preparation method is economical and low in cost, and the prepared composite photocatalyst is relatively high in photocatalytic activity, is used for photocatalytic reduction of CO2 into ethanol, and has relatively high conversion capacity.

The invention relates to a preparation method of a BiOBrxI1-x / ZIF-8 composite photocatalyst. The preparation method comprises the following steps: carrying out solvothermal reaction on a mixed solution of soluble zinc salt, 2-methylimidazole and methanol; dissolving halide in ethylene glycol to obtain a solution A; mixing ethylene glycol and bismuth nitrate to obtain a solution B, and slowly adding the solution B into the solution A under magnetic stirring to obtain a bismuth oxyhalide source; dropwise adding deionized water into a mixed solution of an organic solvent, an acidic pH regulator and a bismuth oxyhalide source, and performing stirring to obtain a first solution; and concentrating and adding ZIF-8 powder to obtain the BiOBrxI1-x / ZIF-8 composite photocatalyst. The catalyst prepared by the invention can be recycled, and has no pollution to the environment; the preparation time is short and large-scale production can be achieved. In the research process, the condensed state physical subsidy of the ninth batch of key disciplines in Henan Province with the project number of 1333010223 is obtained.

The invention belongs to the field of materials, and more particularly relates to a ZnFe2O4 hollow sphere-RGO composite material and a preparation method thereof. The material comprises zinc ferrite hollow spheres and flaky graphene, wherein the zinc ferrite hollow spheres are attached to the surface of the flaky graphene. The preparation method comprises the following steps: (1) dissolving a zincsalt and a trivalent iron salt in an organic solvent, adding a graphene oxide dispersion to the organic solvent, and conducting stirring to obtain a mixed solution; (2) transferring the mixed solution to a stainless steel high pressure reactor lined with polytetrafluoroethylene, sealing the reactor for a reaction, and conducting natural cooling, centrifuging, washing and drying to obtain a precursor; and (3) carrying out heat treatment on the precursor in an inert atmosphere to obtain the ZnFe2O4 hollow sphere-RGO composite material. According to the invention, a zinc ferrite hollow sphere-reduced graphene oxide composite material is prepared by combining a simple one-step synthesis process with a high-temperature inert atmosphere heat treatment process; the material prepared by the preparation method disclosed by the invention has large specific surface area and improved electron mobility; and the preparation method is simple and safe, low in cost, and high in practicability.

The invention provides a preparation method of superfine silver powder for an electronic material. The preparation method comprises the following steps: a) preparing a reducer and a dispersing agent solution, b) preparing a reductive solution, c) dropwise adding for a reduction reaction, and d) treating reaction sediment. According to the preparation method of superfine silver powder for the electronic material, the preparation method is simple and safe, the efficiency is high, the cost is low, and the prepared superfine silver powder is high in purity, uniform in granularity, small in particle diameter, and easy to produce in large scale.

The invention discloses a preparation method of a solution for suppressing smoking cravings. The ingredients include 1%-4.5% of food-grade menthol, 10%-90% (volume ratio) of food-grade ethanol, and the rest is water. The preparation method of the smoking craving suppression solution of the invention is simple, safe, non-toxic and pollution-free, low in cost and good in effect. Eliminate smoking addiction in 3-5 days, no smoking cessation syndrome, easy to carry and use, suitable for all kinds of smokers to quit smoking.

The invention relates to a preparation method of natural para aminobenzoic acid and a derivative of natural para aminobenzoic acid. Termitomyces albuminosus is cultured through liquid fermentation, a fermentation product is obtained, and then natural para aminobenzoic acid and the derivative of natural para aminobenzoic acid are separated and purified from the fermentation product. With the adoption of the preparation method of natural para aminobenzoic acid and the derivative of natural para aminobenzoic acid, natural para aminobenzoic acid and the derivative of natural para aminobenzoic acid can be prepared by the aid of the fungus termitomyces albuminosus through liquid fermentation, sources of raw materials of a culture medium are wide, the preparation method is simple, safe and environment-friendly, and industrial production is easy to realize.

The invention discloses a method of preparing high-purity potassium iodate. An iodine-potassium iodate solution is prepared from crude iodine, thus solving the problem that iodine content cannot be accurately metered when crude iodine is directly fed; by means of the feeding mode of the iodine through dissolution, the problems that during addition of solid iodine, a manhole in a device needs to open for feeding the raw materials, which may cause environment pollution and health damage due to chlorine leakage and iodine volatilization, thereby improving the technical safety. The preparation method is simple and safe, is easy to carry out and low in cost and can reach more than 89% in yield and more than 99.5% in purity. The reaction process is free of generation of high-toxic gas, chlorine,and is free of generation of waste solid, waste gas and waste water. The process is safe and environment-friendly, is low in requirement on equipment, is low in cost, and is easy to achieve in industrial production.

The invention provides water-based alkyd antirust paint as well as a preparation method and application thereof, and belongs to the field of paint. The water-based antirust paint is prepared from the following components in percentage by weight: 0.1 to 1.0 percent of defoaming agent, 0.5 to 10.0 percent of dispersing agent, 20.0 to 60.0 percent of antirust pigment and filler, 0.5 to 20.0 percent of anti-settling agent, 10.0 to 30.0 percent of alkyd resin, 10.0 to 30.0 percent of acrylic emulsion, 0.5 to 10.0 percent of pH regulator, 1 to 10.0 percent of drier, 0.1 to 0.5 percent of antirust agent, 0.1 to 5.0 percent of anti-freezing agent, 0.1 to 10.0 percent of flatting agent, 0.1 to 0.5 percent of adhesion promoter, 0.1 to 5.0 percent of anticorrosive bactericide, 0.1 to 5.0 percent of rheological additive, 0.1 to 10.0 percent of coalescing agent and the balance of water. The alkyd antirust paint disclosed by the invention is good in water resistance and quick to dry.

The invention discloses a preparation method of a traditional Chinese medicine Chinese redbud bark smoking cessation solution. The preparation method comprises the steps that when traditional Chinese medicine (dried) Chinese redbud barks are leached with an edible 95% ethanol solution, the ratio of the gram weight number of the Chinese redbud barks to the milliliter number of the 95% ethanol solution is 1:1.3-1.9, and the leaching time is set at 80 h-120 h. The preparation method of the smoking cessation solution is sample, safe, good in smoking cessation effect, free of poison and pollution, low in cost, convenient to carry and use and suitable for all kinds of smokers for smoking cessation.