98results about How to "Simple synthesis path" patented technology

The invention discloses a molybdenum doped vanadium disulfide micron flower material and a preparation method and application thereof. The molybdenum doped vanadium disulfide micro flower material iscomposed of molybdenum doped vanadium disulfide nanosheets by self-assembly. The preparation method comprises the steps of adding a vanadium source, a molybdenum source and ammonia water to water, stirring until being transparent, adding a sulfur source, and stirring to obtain a mixture; making the mixture be further subjected to an one-step hydrothermal reaction, and washing and drying a reactionproduct to obtain the molybdenum doped vanadium disulfide micron flower material; the preparation method has the advantages of simple process, low cost, high yield, mild condition, simple required equipment and environmentally friendly performance, and is capable of mass production. The application of the molybdenum doped vanadium disulfide micron flower material in an electrocatalytic hydrogen evolution reaction shows the excellent catalytic activity, the overpotential is as low as 0.243V (relative to a standard hydrogen electrode), and the Tafel slope is as low as 52.6mV/ Dec.

The invention discloses a VOOH/VS4 micrometer composite powder as well as a preparation method and application of the VOOH/VS4 micrometer composite powder. The preparation method comprises the steps:simultaneously adding sodium metavanadate and thioacetamide into deionized water to obtain a solution A; then, dropwise adding an aqueous ammonia solution into the solution A to obtain a solution B; pouring the solution B into a reaction liner, and then, carrying out sealing for a hydrothermal reaction; next, taking out a product cooled after being reacted, alternately cleaning the product by using water and alcohol, and then, collecting the product; and freezing the cleaned product, and then, drying the product to obtain the VOOH/VS4 micrometer composite powder. The VOOH/VS4 micrometer composite powder prepared according to the preparation method is composed of uniform spheroidal structures of which the diameters are about 10mu m, parts of spheroidal structures are gathered, the insides of microspheres are formed by self-stacking micrometer VS4 short rods of which the diameters are 0.5-1.0mu m and the length is 1.0-2.0mu m, and the outsides of the microspheres are randomly formed fromVOOH long rods having the diameters of 50-200nm and single-crystal structures. The VOOH/VS4 micrometer composite powder is applied to the fields of lithium/sodium ion batteries and photo/electric catalysis. The VOOH/VS4 micrometer composite powder shows excellent electrochemical properties and catalytic property when being applied as an anode material of a sodium/lithium ion battery and a photo/electric catalyst.

The invention provides a method for preparing a solid light-emitting carbon point, namely, a method for preparing a solid light-emitting carbon point from cereal raw materials such as wheat flour, corn powder, rice powder, sorghum flour and millet flour as a C-containing precursor, and belongs to the field of preparation of nano materials. The method comprises the following steps: by taking cereal raw materials such as wheat flour as the C-containing precursor, preparing to obtain a precursor solution of certain concentration, and performing simple post-treatment under hydrothermal conditions without any chemical reagent, thereby achieving green synthesis of the carbon point which can emit light in both liquid and solid states. The method effectively solves the problems that the carbon point prepared by the traditional method emits light in a solution and the phenomenon of solid-state fluorescence quenching is caused after drying. The raw materials of the preparation method are cheap and easy to obtain, the synthesis route is simple, the raw materials are safe and non-toxic, and the product is completely green. The solid light-emitting carbon point prepared by using the method is powdery, easy to disperse, and beneficial for further utilization. The light can be emitted from the solid just like in a solution, and has obvious dependency of excitation wavelength.

The invention relates to a preparation method and an application of ultra-small VS4/Super P composite nano-powder. The preparation method comprises the following steps: adding sodium metavanadate, thioacetamide and Super P to deionized water to obtain a solution A; then dropwise adding ammonia water to the solution A to obtain a solution B with pH of 9.8-10.2; pouring the solution B into a reaction lining, and sealing the reaction lining for hydrothermal reaction; washing a reaction product with water and alcohol alternately to obtain the ultra-small VS4/Super P composite nano-powder. The VS4/Super P composite nano-powder is prepared from VS4 nano-spheres and super P nano-spheres through uniform and interactive distribution. The VS4 nano-spheres are uniform in shape and uniform in size andhave diameter of 50-80 nm. The VS4 nano-spheres are prepared from single crystal VS4 flexible nano-rods with diameter of 20 nm and length of 60-100 nm through winding, and the VS4 flexible nano-rodsgrow along the (110) crystal plane orientation. The VS4/Super P composite nano-powder is applied to lithium/sodium ion batteries and photo/electro-catalytic fields and shows excellent electrochemicaland catalytic properties.

The invention provides a polyethylene grafted carbon nanomaterial, and a preparation method thereof. The structure of the polyethylene grafted carbon nanomaterial is represented by formula I, wherein A is used for representing carbon nanotube or graphene; R is used for representing -S-, -OCONH- or -CONH-; R1 is used for representing C1-C6 methylene; B is used for representing a tri-functionality silanol condensation compound, and the silicon atom is connected with 0 to 2 hydroxyls; C is used for representing a structure represented by formula II, PE is used for representing polyethylene, R2 is used for representing -CH2CH2S-, -CH(OH)CH2NH-, or -OCONH-, R3 is used for representing C1-C6 straight-chain saturated alkyl, the molecular weight of polyethylene is controlled to be 300 to 3000g/mol, and the polydispersity index ranges from 1 to 5. The invention also discloses the preparation method of the polyethylene grafted carbon nanomaterial. The raw materials of the polyethylene grafted carbon nanomaterial are widely available and cheap; the product structure is accurate; the synthesis route of the preparation method is simple; and practicability is high.

The invention provides a nanometer floriform vanadium disulfide/hydroxy vanadium oxide difunctional composite electrocatalyst. The composite electrocatalyst has the ball-flower-shaped appearance formed by stacking VS2/VOOH nanometer sheet layers. The composite electrocatalyst is obtained by the following method: conductive carbon base is soaked in a dispersoid containing NH4VO3, C2H5NS and ammonium hydroxide; hydrothermal reaction is performed to obtain VS2/VOOH nanoflowers growing on the conductive carbon base. The method has the advantages that large-scale equipment and harsh reaction conditions are not needed; the raw materials are cheap and can be easily obtained; the cost is low; the yield is high. The nanoflower-shaped structure of the product is favorable for the full contact of electrolyte and VS2/VOOH; the free in and out of ions is facilitated; further, the electrochemical performance can be greatly enhanced. The product chemical composition is uniform; the purity is high; the appearance is uniform; when the composite electrocatalyst is used as an electrolytic water electrode material, excellent electrochemical performance can be shown; under the current density of 100mA/cm<2>, the overpotential is about 709mV.

The invention relates to the field of biological medicines, in particular relates to a preparation method of acetaldehyde dehydrogenase activator alda-1, and application of the same. The acetaldehyde dehydrogenase activator alda-1 provided by the invention can be used for treating brain tissue nervous disease, in particular, has protection effect on cerebral ischemia-reperfusion. The acetaldehyde dehydrogenase activator alda-1 provided by the invention can be mixed with pharmaceutic adjuvant according to certain proportion so as to be prepared into any oral taken preparation, and the dosage of per unit of preparation is 5-500mg.

The invention discloses a nickel selenide/ferronickel substrate material as well as a preparation method and application thereof, which are applied to the field of electrocatalysis. In the preparationmethod, selenium powder is used as a selenium source, lauryl sodium sulfate is used as a morphology regulating agent, vanadium trichloride is used as a vanadium source, foamed ferronickel is used asa nickel source, vanadium-doped nickel selenide grows on the foamed ferronickel in situ by adopting a solvothermal reaction method, and the foamed ferronickel has high conductivity, so that in-situ vanadium, nickel selenide and the conductive substrate foamed ferronickel are compounded, the contact resistance can be effectively reduced, the distribution of the catalyst is improved, electrons can be quickly transmitted to the surface of the catalyst and participate in the reaction, and the electrocatalytic activity and stability of the catalyst are improved. The prepared nickel selenide/ferronickel substrate material is applied to the field of electrocatalysis, and has excellent HER and OER performances under alkaline and neutral conditions.

The present invention discloses a cobalt iron oxide hollow nano-cage material, which has an inner cavity and an outer shell. The invention further discloses a preparation method of the cobalt iron oxide hollow nano-cage material, and uses of the cobalt iron oxide hollow nano-cage material in oxygen evolution electrode materials. According to the present invention, the cobalt iron oxide hollow nano-cage material has good performance superior to the commercial noble metal RuO2 material.

The invention discloses a preparation method of a network-structure zinc nickel double-metal hydroxide double-function electrocatalyst. The final product is directly synthesized through a one-step hydrothermal reaction; the network-structure zinc nickel double-metal hydroxide prepared by the method grows on a foam nickel substrate to form a network structure, the nano-sheet thickness is about 10 to 20 nm, the 3D network structure is very good for ions to come in and go out freely, the activity of the nickel-based material in alkali liquid is effectively improved, complete contact of electrolyte and a catalytic material is benefited, and the electrochemical property can be greatly enhanced, so that hydrogen evolution and oxygen evolution properties of water electrolysis are effectively improved.

The invention relates to VS[4] nanorod/VS[2] nanosheet three-dimensional self-assembly hollow rodlike composite powder and a preparation method thereof. According to the preparation method, ethyl alcohol is taken as a solvent, sodium metavanadate and thioacetamide are respectively taken as a vanadium source and a sulfur source, and by synergistically controlling the parameters such as concentration, ratio, reaction temperature, reaction time, reaction pH value and packing ratio of the ethyl alcohol, the sodium metavanadate and the thioacetamide, the in-situ generation of uniform distribution of the VS[4] nanorods/VS[2] nanosheets self-assembly hollow rodlike structures is realized by a one-step solvothermal method. The method is simple in reaction process, low in temperature, easy to control, does not require large-sized equipment or harsh reaction condition and can simultaneously realize a structure which is formed through combining two materials in a specific mode in the reaction process. When used as a lithium/sodium ion battery negative electrode material and an optical/electrical catalyst, the product can have excellent electrochemical performance and catalytic performance.

The invention belongs to the technical field of electrode material preparation, and particularly relates to a preparation method of a nitrogen-doped antimony-carbon composite material and applicationof the nitrogen-doped antimony-carbon composite material in a sodium-ion battery electrode. Potassium antimony tartrate is used as an antimony source, dopamine hydrochloride is used as a nitrogen source and a carbon source, a precursor is obtained through a liquid-phase reaction at room temperature, and then the nitrogen-doped antimony-carbon composite material is obtained through centrifugation,washing, drying and carbonization treatment. In the reaction process, the hydrolysis speed of antimony in a solution can be effectively controlled by controlling the pH value of the reaction solution,and meanwhile dopamine is subjected to a slow polymerization reaction to form polydopamine which coats the surface of a hydrolysate. After the precursor obtained by adopting the method is subjected to carbonization treatment, the antimony-doped carbon composite material uniformly distributed inside can be formed, and the volume increase of the electrode material can be effectively relieved in thecharging and discharging process of the battery, so that the sodium ion battery keeps relatively high specific capacity. The method is simple and rapid, does not need complex equipment, is low in cost and is suitable for mass production.

The invention relates to star-structured polyethylene taking silicon dioxide as a kernel, and a preparation method of the star-structured polyethylene. The star-structured polyethylene is as shown in the formula (I) in the specification, and the chemical structure is as follows: SinBn(OH)mO3[n-m], wherein PE is a polyethylene chain, n is 3-20, m is 0-30, kernel A is a compound which has a structure similar to that of silicon dioxide and is prepared by condensating silanol in different degrees, a silicon atom contains 0-2 hydroxy groups, arm B is a polyethylene chain with the structure of PE-R-R2, PE is a polyethylene chain, R is -CH2Ch2S-, -CH(OH)CH2NH or -OCONH-, R2 is vinyl of C1-C6. The invention further provides the preparation method of the compound. The star-structured polyethylene provided by the invention is wide in raw material resource, is simple, convenient and efficient in preparation method, low in cost, definite in structure of a product, excellent in property and high in practicability.

The invention discloses a nanometer composite negative material and a preparation method and application thereof. The method comprises the steps that nanometer particles with lithium ion embedding activity are mixed with asphaltene in a solvent, the characteristic of the solvent is selected and controlled so that the asphaltene are absorbed in the surfaces of the nanometer particles and a coatingis formed, and a precursor of the composite material is obtained; and the precursor of the composite material is heated in the inert atmosphere, and the nanometer composite negative material is prepared. The preparation method has the advantages including wide raw material resources, simple synthesis path and capable of widening the synthesis scale. The composite negative material comprise the coating formed by the asphaltene absorbed in the surfaces of the nanometer particles, the coating has the advantages of high mechanical strength and high ion conductivity after high temperature treatment, and the nanometer composite negative material has performances, as high energy density and high circulation stability, needed by high-efficiency lithium battery anodes.

The invention discloses a polymer semiconductor containing a quinoid-donor-receptor unit, and a preparation method and application thereof. The synthesis method comprises the following steps: mixing (3Z, 6Z)-3, 6-bis((5-bromothiophen-2-yl)methylene)piperazine-2, 5-dione, potassium carbonate and alkyl bromide or alkyl iodide in N, N-dimethylformamide, reacting under inert gas, cooling, performing suction filtration, performing evaporative concentration on the obtained filtrate, performing silica gel column chromatography, recrystallizing with absolute ethyl alcohol to obtain a product, dissolving the product in a dry tetrahydrofuran solution, cooling, dropwise adding n-butyllithium, stirring for reaction, adding trimethyltin chloride, slowly raising the temperature to room temperature, stirring, quenching with water for reaction, extracting with dichloromethane, drying, filtering and spin-drying, and recrystallizing to obtain an oily product M; and carrying out Stille coupling polymerization reaction by taking the product M as a raw material to prepare the polymer. The polymer disclosed by the invention has the characteristics of high carrier mobility, simplicity in synthesis and relatively high yield, and has great development prospects and potential in the field of organic photoelectricity.

Provided are an alkaline anion exchange membrane based on chemical cross-linking and a preparation method thereof. The preparation method comprises the following steps of: carrying out low-temperature chemical cross-linking on a polymer main chain in strong oxidizing acid, piperidone and an organic solvent A, and after the reaction is finished, carrying out quenching, washing and drying to obtain solid powder; adding the powder into an organic solvent B, adding methyl iodide, and carrying out dark reaction at room temperature to obtain polymer powder; and dissolving the polymer powder in an organic solvent C, casting to form a membrane to obtain a polymer membrane, washing the polymer membrane with deionized water, and carrying out anion exchange. According to the invention, a polymer main chain is subjected to self chemical cross-linking through a piperidone type functional group for the first time, so that the mechanical strength and chemical stability are improved; the synthesis path is simplified, the reaction process is shortened, and the yield is improved; and the prepared alkaline anion exchange membrane is compact, transparent, high in ion exchange capacity, good in thermal stability and high in mechanical strength, and development of the polymer ion exchange membrane with high conductivity and strong alkali resistance is realized.

A cobalt sulfide nanosheet material and a preparation method thereof, comprising adding cobalt acetate tetrahydrate into a mixed solution of isopropanol and ethylene glycol, and stirring magnetically to obtain solution A; adding sodium sulfide to deionized water, and then adding ammonia water to obtain Solution B; mix solution A and solution B uniformly and then pour into a homogeneous hydrothermal reaction kettle for reaction; then take out the cooled product after the reaction, wash and freeze-dry to obtain cobalt sulfide nanosheet material. The raw materials used in the present invention are easy to obtain and are environmentally friendly, the experimental reaction conditions are simple, and the safety is high. By adjusting the pH value of the solution, the particle size of the product is smaller, and the active sites of the redox reaction during cobalt sulfide intercalation and desorption of sodium are increased, thereby improving the efficiency of the battery. cycle stability.

A preparation method of vanadium tetrasulfide@Super P composite powder comprises the following steps of: weighing 48-52mg of Super P, adding the Super P into 58-62ml deionized water, and performing ultrasonic treatment for 1.5-2.5h to obtain a uniformly dispersed black solution A; weighing 0.9-1.1g of sodium metavanadate and 3.5-3.7g of thioacetamide, and adding the sodium metavanadate and the thioacetamide in the solution A at the same time, and performing magnetic stirring for 30-60min to obtain a solution B; pouring the solution B into a reaction liner, then sealing the reaction liner, arranging the liner into an external kettle for fixing, putting the external kettle in a homogeneous reaction instrument, and performing reaction at a temperature of 175-185 DEG C for 23-25 h in a rotation speed of 5-10 r/min; after the hydrothermal reaction is finished, naturally cooling the reaction kettle to a room temperature, taking out a cooled product after reaction, and collecting the productafter alternate cleaning with water for 2-5 times and alcohol for 2-5 times; putting the collected product into a cold well of a freeze drier for freezing, putting the frozen product into a tray, covering a seal cover, performing vacuum supply of the tray to the air pressure in the tray to be 10-20Pa, and drying the tray for 12-18h to collect the product. The preparation method of vanadium tetrasulfide@Super P composite powder and the application thereof are simple in reaction process, low in temperature and easy to control and do not need large-scale devices and harsh reaction conditions.

The invention relates to a preparation method of perdeuterated tetrol, and belongs to a synthesis technology of a deuterated energetic material. The preparation method comprises the following steps: completely dissolving phosphorus pentoxide and deuterated nitric acid, adding deuterated parachloronitrobenzene to obtain deuterated 2, 4-dinitrochlorobenzene, and dissolving the deuterated 2, 4-dinitrochlorobenzene in a substance A; sequentially adding a deuterated methylamine solution and a sodium deuterium oxide solution, heating, filtering and the like to obtain deuterated 2, 4-dinitro-N-methylaniline; treating to obtain the deuterated tetrol; the method has the advantages of simple synthesis path, no violent oxidation effect in the nitrification process, stable reaction and small temperature change amplitude. Because no violent oxidation reaction exists in the reaction process, the consumption of raw materials is low, meanwhile, the use of deuterated sulfuric acid is avoided due to theuse of phosphorus pentoxide, and the production cost is reduced. No meta-position nitro-tetrol is generated in the nitration process, aftertreatment is simple, refining is not needed, and the productpurity is high. The preparation of the perdeuterated tetrol is realized, and a reference is provided for the industrial production of the perdeuterated tetrol.