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662 results about "Thioacetamide" patented technology
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Thioacetamide is an organosulfur compound with the formula C₂H₅NS. This white crystalline solid is soluble in water and serves as a source of sulfide ions in the synthesis of organic and inorganic compounds. It is a prototypical thioamide.
Graphene nano sheet/MoS2 composite nano material and synthesis method thereof
InactiveCN102142551AMild reaction conditionsSimple processMaterial nanotechnologyCell electrodesSynthesis methodsThiourea
The invention discloses a graphene nano sheet / MoS2 composite nano material and a synthesis method thereof. The method comprises the following steps of: preparing a graphite oxide nano sheet from graphite by using a chemical oxidation method, then dissolving molybdate into deionized water to form a solution of 0.02 to 0.07M, and adding thioacetamide or thiourea serving as a sulfur source and a reducer, wherein the mass ratio of the thioacetamide or the thiourea to the molybdate is 5:1-12:1; and adding the graphite oxide nano sheet into the solution, performing ultrasonic treatment for 1 to 2 hours so that the graphite oxide nano sheet is fully dispersed in a hydrothermal reaction solution, transferring the mixture into a hydrothermal reaction kettle, sealing, reacting for 20 to 36 hours at the temperature of between 220 and 260 DEG C, and obtaining the graphene nano sheet / molybdenum disulfide composite nano material by one-step hydrothermal synthesis, wherein the mass ratio of the graphene nano sheet to the molybdenum disulfide in the composite material is 1:2-4:1. The method has the characteristics of mild reaction condition and simple process. The synthesized graphene nano sheet / molybdenum disulfide composite nano material serving as an electrochemical lithium storage and electrochemical magnesium storage electrode material has wide application.
Owner:ZHEJIANG UNIV
g-C3N4 nanosheet/CdS composite visible-light-driven photocatalyst
InactiveCN103785434AImprove separation efficiencyImprove photocatalytic efficiencyPhysical/chemical process catalystsWater/sewage treatment by irradiationPtru catalystThio-
The invention discloses a g-C3N4 nanosheet / CdS composite visible-light-driven photocatalyst and a preparing method and application thereof and belongs to the technical field of material preparation and photocatalysis. The catalyst is directly obtained with the solvothermal method by taking two-dimensional ultra-thin g-C3N4 nanosheets as the matrix, cadmium acetate dihydrate and thioacetamide as raw materials, and ethyl alcohol as the solvent. Compared with general block g-C3N4 / CdS, the two-dimensional ultra-thin g-C3N4 nanosheet / CdS composite photocatalyst prepared with the method has the advantages that the two substances are in tighter contact, the specific surface area is larger, photon-generated electron-hole can be better separated, and photocatalytic efficiency is higher. Under the shining of sunlight, the composite photocatalyst enables catalytic degradation of organic pollutants such as methyl orange in water to be achieved well. The preparing method is easy, raw materials are easy to obtain, visible light catalysis efficiency is high, and the application prospect is wide in the photocatalysis field.
Owner:FUZHOU UNIV
Molybdenum disulfide nano-sheet film material and its preparation methods
ActiveCN102849798AImprove hydrogen evolution performanceShape is easy to controlMaterial nanotechnologyCable/conductor manufactureThioureaFilm material
The invention discloses a molybdenum disulfide (MoS2) nano-sheet film material and its preparation methods. The film material is characterized in that MoS2 nano-sheets vertically and sequentially grow on a conductive substrate, and the diameters and the thicknesses of the MoS2 nano-sheets are 0.05-2mum and 2-30nm respectively. There are two preparation methods of the film material. One preparation method comprises the following steps: a substrate which can be a copper sheet, a silver sheet, a titanium sheet, a tungsten sheet, a molybdenum sheet or carbon is placed in a solution comprising a molybdate and sulfur-containing compounds (comprising thiourea, thioacetamide and L-cysteine); and the sulfur-containing compounds undergo a hydrothermal reaction to grow the compactly-grown and uniformly-sequential MoS2 nano-sheet films on the substrate. Another method comprises the following steps: the molybdenum sheet is directly placed in a solution of the sulfur-containing compounds (comprising thiourea, thioacetamide and L-cysteine); and the sulfur-containing compounds undergo a sulfuration reaction under a hydrothermal condition to form the compact and uniform MoS2 nano-sheet ordered films. The film has a low hydrogen evolution overpotential (-30mv), a small Tafel slope (52mV / dec) and a high electrochemical stability, and is a hydrogen evolution electrode material extremely having an application prospect.
Owner:深圳海氢科技有限公司
Preparation method of one-step hydrothermal synthesis of carbon/molybdenum disulfide composite microsphere
InactiveCN1994896AUniform particle sizeSimple methodVanadium oxidesMolybdenum sulfidesSucroseMicrosphere
The invention discloses a making method of carbon / molybdenum disulfide composite microball through water heat method, which comprises the following steps: dissolving molybdate in the deionized water to form 0.02-0.1m solution; adding thioacetamide or sulfourea as sulfur source with molar rate of thioacetamide or sulfourea and molybdate at 31-51; stirring evenly; adding glucose or sucrose as carbon source with the molar rate of glucose or sucrose and molybdate at 51-251; stirring completely; transmitting solution into water heat reacting autoclave to react under 200-240 deg. c for 20-24h; cooling naturally; separating; washing; drying to obtain the product.
Owner:ZHEJIANG UNIV
Double-metal-sulfide catalyst with high hydrodeoxygenation activity and preparation method thereof
InactiveCN103920506ALarge specific surface areaHigh catalytic activityPhysical/chemical process catalystsRefining to eliminate hetero atomsNickel saltVulcanization
The invention relates to a preparation method for a double-metal-sulfide catalyst. Soluble molybdate and nickel salt or cobalt salt serves as a raw material, thiourea or thioacetamide serves as a sulfur source, and a Ni(Co)-S / MoS2 catalyst is prepared through a two-step hydrothermal method. The method particularly comprises the following steps: MoS2 is prepared in a high pressure reactor through the hydrothermal method first, then the nickel salt or cobalt salt and the sulfur source are added into the reactor of the obtained MoS2 to be evenly mixed, the reactor is sealed and heated, a reaction is conducted for a certain period of time, and Ni-S or Co-S is deposited on the MoS2, so that the Ni(Co)-S / MoS2 catalyst is prepared. The preparation method is characterized in that the specific area of the Ni(Co)-S / MoS2 catalyst prepared through the two-step hydrothermal method is large, high temperature vulcanization is not required in the preparation process, the preparation condition is mild, the catalyst is used for hydrodeoxygenation, a target product has high yield and good repeatability, and hydrodeoxygenation activity of the catalyst is high.
Owner:XIANGTAN UNIV
Preparation method for ion liquid assisted hydrothermal synthesis of MoS2 microsphere
InactiveCN1994895AImprove performanceMild reaction conditionsMolybdenum sulfidesTetrafluoroborateMolybdate
The invention discloses a making method of MoS2 microball synthesized by ionic liquid auxiliary water, which comprises the following steps: dissolving molybdate in the deionized water to form 0.05-0.1m solution; adding thioacetamide or sulfourea as sulfur source with molar rate of thioacetamide or sulfourea and molybdate at 31-51; stirring evenly; adding 1-butyl-3-methyl imidazole tetrafluoride borate as ionic liquid with the bulk rate of ionic liquid and synthetic solution at 1300-1 50; stirring completely; transmitting solution into water heat reacting autoclave to react under 200-240 deg. c for 20-24h; cooling naturally; separating; washing; drying to obtain the product.
Owner:ZHEJIANG UNIV
Graphene/MoS2 graphene and amorphous carbon composite material and preparation method thereof
InactiveCN102142558ALarge specific surface areaImprove mechanical propertiesCell electrodesThioureaHeat treated
The invention discloses a graphene nanometer sheet / MoS2 graphene nanometer sheet and amorphous carbon composite material and a preparation method thereof. The composite material is characterized by being composed of the following components in percentage by weight: 4.2-15% of graphene nanometer sheet, 4.2-65% of MoS2 graphene nanometer sheet and the balance of amorphous carbon, wherein the molar ratio of the graphene nanometer sheet to the MoS2 graphene nanometer is (1:1)-(4:1). The preparation method comprises the following steps: preparing graphite into graphite nanometer sheets by a chemical oxidation method; then evenly dispersing the oxidized graphite nanometer sheets into a solution containing molybdate, thioacetamide or thiourea and glucose; obtaining an intermediate product by virtue of hydrothermal reaction; and carrying out heat treatment on the intermediate product at high temperature to obtain the graphene nanometer sheet / MoS2 graphene nanometer sheet and amorphous carbon composite material. The method disclosed by the invention has the characteristics of moderate reaction condition and simple process. The graphene nanometer sheet / MoS2 graphene nanometer sheet and amorphous carbon composite material, which is synthetized by the invention, can be widely applied by serving as an electrochemical storage lithium electrode material, an electrochemical storage magnesium electrode material and a catalyst carrier.
Owner:ZHEJIANG UNIV
ZnIn2S4/NH2-MIL-125(Ti) composite visible-light catalyst and preparation method thereof
InactiveCN105964305AOrganic-compounds/hydrides/coordination-complexes catalystsN dimethylformamideUltrasonic dispersion
The invention relates to a novel ZnIn2S4 / NH2-MIL-125(Ti) composite visible-light catalyst and belongs to the technical field of photocatalysis. The novel ZnIn2S4 / NH2-MIL-125(Ti) composite visible-light catalyst is characterized in that ZnIn2S4 is nanosheet-shaped and is uniformly distributed on the surface of lumpy NH2-MIL-125(Ti), and the mass percent of the NH2-MIL-125(Ti) is 20.0% to 6.0%. A preparation method comprises the steps: (1) dissolving a certain amount of tetrabutyl titanate and 2-amino terephthalic acid in a mixture solution of N,N-dimethylformamide and methanol, and carrying out a crystallizing reaction for 48 hours in an autoclave at the temperature of 150 DEG C, so as to obtain the NH2-MIL-125(Ti); (2) dispersing the synthesized NH2-MIL-125(Ti) into a certain volume of ethanol in an ultrasonic dispersion manner, then, sequentially adding a certain amount of propanetriol, indium chloride, zinc chloride and thioacetamide into the dispersion while carrying out stirring, carrying out a crystallizing reaction for 10 hours in an autoclave at the temperature of 180 DEG C to 200 DEG C so as to obtain a solid product, and subjecting the obtained solid product to filtrating, washing and drying, thereby obtaining the ZnIn2S4 / NH2-MIL-125(Ti) composite visible-light catalyst. The preparation method of the composite visible-light catalyst is environmentally-friendly and is simple in process. The prepared composite catalyst has very high visible-light catalytic activity and has a potential application value in photocatalytic hydrogen production using solar energy.
Owner:SHANGHAI UNIV
Graphene aerogel loaded two-phase transition metal sulfide as well as preparation method and application thereof
ActiveCN106328947ASimple processReduce energy consumptionCell electrodesSecondary cellsCrystallinityCobalt
The invention provides a graphene aerogel loaded two-phase transition metal sulfide as well as a preparation method thereof. The preparation method comprises the following steps: firstly, preparing a three-dimensional graphene aerogel loaded nickel-cobalt hydrotalcite precursor by taking inorganic salts, namely, nickel nitrate and cobalt nitrate as raw materials, graphite oxide as a carrier and ammonia water as an alkali source and a structure-directing agent; and then, sulfurizing the precursor by taking thioacetamide (TAA) as a sulfur source, and performing calcination under an inert atmosphere to improve crystallinity, thereby obtaining graphene aerogel loaded two-phase transition metal sulfide nano-particles. The obtained graphene aerogel loaded two-phase transition metal sulfide has a nano-scale grain size, is uniformly dispersed, has a large specific area larger than that of two-dimensional graphene, is high in purity and good in electrochemical performance, and particularly has a very good reversible discharge capacity and stable cycle performance when used as a lithium ion battery cathode material.
Owner:BEIJING UNIV OF CHEM TECH
High-active ZnIn2S4/TiO2 Z system catalyst material and preparation method thereof
ActiveCN107866234AIncrease profitSave raw materialsGas treatmentPhysical/chemical process catalystsPtru catalystThio-
The invention relates to a new preparation method of a ZnIn2S4 / TiO2Z system composite photocatalyst. The new preparation method comprises the following steps: (1) taking commercial P25 and sodium hydroxide solution as raw materials, performing hydrothermal treatment at 180DEG C for 48h, and performing replacement with H+ to obtain a H2Ti3O7 nanobelt, performing hydrothermal treatment through dilute sulfuric acid at 100DEG C, and performing high temperature calcination at 600DCG C to obtain a TiO2 nanobelt with rough surface; and (2) weighing zinc chloride, indium chloride, and thioacetamide according to a 1:2:4 molar ratio of Zn, In and S, and dissolving the zinc chloride, indium chloride, and thioacetamide into ethylene glycol to obtain a mixture, then dispersing the obtained TiO2 nanobelt into the mixture ultrasonically, performing treatment at 120DEG C for 2h, performing centrifugation and separation on the obtained mixture, and then performing oven-drying for 10h to obtain the ZnIn2S4 / TiO2Z system composite photocatalyst. According to the new preparation method, the obtained novel composite photocatalyst has an excellent performance on catalytic reduction of CO2 under a simulated sunlight condition; and the raw materials are inexpensive, and the technology is simple, so that the product cost is effectively reduced, a light absorption range is broadened, and utilization ratio of sunlight is improved, and the composite photocatalyst has a very high practical value and an application prospect.
Owner:CHINA UNIV OF GEOSCIENCES (BEIJING)
Molybdenum disulfide nanosphere/titanium dioxide composite material and preparation method thereof
InactiveCN101979480AEvenly dispersedGive full play to lubricityPhysical/chemical process catalystsAdditivesMolybdateShielding gas
The invention provides a molybdenum disulfide nanosphere / titanium dioxide composite material and a preparation method thereof. The composite material is characterized in that: titanium dioxide, molybdate and thioacetamide are taken as raw materials, the surface of the titanium dioxide is activated by strongly acidic solution, and the thioacetamide is reacted with the molybdate on the surface of the titanium dioxide; and the titanium dioxide promotes the reaction product to grow in a regular sphere shape, and the reaction product is calcined in vacuum or protective gas and is converted into the molybdenum disulfide nanosphere / titanium dioxide composite material. The preparation technology is simple, the reaction conditions are easy to control, the molybdenum disulfide nanospheres have a regular shape and are uniformly dispersed in the titanium dioxide, and the composite material can be used as a high-performance lubricant and catalyst.
Owner:HEFEI UNIV
Preparation method and application of NiCo2S4/graphite felt composition electrode material
ActiveCN106206059AStable structureCoated evenlyHybrid capacitor electrodesHybrid/EDL manufactureCapacitanceSolvent
The invention discloses a preparation method and application of a NiCo2S4 / graphite felt composition electrode material. Water and ethyl alcohol serve as solvents, baking soda serves as an alkali source, ammonium fluoride serves as surfactant, cobalt chloride and nickel chloride serve as a cobalt source and a nickel source respectively, and a nickel-cobalt precursor is constructed on pre-oxidized graphite felt through hydrothermal reaction; then thioacetamide serves as a sulfur source, and the needle-shaped NiCo2S4 / graphite felt composition electrode material is prepared through the secondary hydrothermal method. The nickel-cobalt precursor can increase the sulfur loading amount and stabilize appearance of NiCo2S4, ammonium fluoride greatly increases the nucleation rate of NiCo2S4, and accordingly the specific capacitance of the composite material is increased and is as high as 1260-1265 F / g. The prepared NiCo2S4 / graphite felt composition electrode material is good in conductivity and high in specific capacitance, has the mechanical property of softness, and can be used as a supercapacitor electrode material.
Owner:FUZHOU UNIV
Ni doping Cd*.Zn*.*S micrometre ball photocatalyst and preparation method
ActiveCN101157044AImprove hydrogen production activityHigh activityPhysical/chemical process catalystsHydrogen productionPhotocatalytic water splittingPhotocatalytic reaction
The invention discloses Ni-doped Cd0.1Zn0.9 S microsphere photocatalyst and the preparation method thereof, the particle shape of the produced photocatalyst is a microsphere formed by nanometer crystals, and the doping amount of Ni is 0.1 percent to 0.5 percent of the weight of the catalyst. The invention has the preparation method that zinc sulfate, cadmium sulfate, nickel nitrate, and thioacetamide are taken as raw materials to form mixed solution which is sealed in a hydrothermal caldron and then laid in a baking oven to be insulated, naturally cooled to the room temperature, a resultant is obtained through cleaning, drying, and grinding. The Ni-doped Cd0.1Zn0.9S microsphere photocatalyst is prepared by the invention, and the anti-surface oxidation capability in air and the photo-corrosion resistant capability in the photocatalytic reaction are evenly enhanced greatly. Because the particle of the photocatalyst is microsphere-shaped, the photocatalytic activity for photocatalytic water splitting into hydrogen of visible light of the catalyst is greatly enhanced, and the highest hydrogen production rate reaches 191.01 micromole / (g*h). The quantum efficiency reaches 6.77 percent at the 420 nm position. After Pt of 0.6 wt percent is loaded, the highest hydrogen production rate reaches 585.45 micromole / (g*h), which is three times than the hydrogen production rate when the Pt is not loaded. The quantum efficiency reaches 15.9 percent at the 420 nm position, the activity is high, and the stability is good.
Owner:XI AN JIAOTONG UNIV
Iodine doped bismuthyl carbonate nanosheet and molybdenum disulfide modified carbon nanofiber composites, preparation method and application thereof
ActiveUS20190127883A1Low costEasy to operateFullerenesArtificial filament washing/dryingFiberSodium iodide
Iodine doped bismuthyl carbonate nanosheet and molybdenum disulfide modified carbon nanofiber composites, preparation method and its application in wastewater treatment are disclosed. Bismuth citrate and sodium carbonate as precursors, sodium carbonate as a precipitating agent, dispersed in a mixed solution of water and ethylene glycol, sodium iodide as a iodine source, nano carbon fiber membrane act as the carrier, to synthesis carbon fiber membrane that modified by iodine-doped Bi2O2CO3 nanosheets; then sodium molybdate and thioacetamide as precursors, dispersed in water to react to obtain iodine doped bismuthyl carbonate nanosheet and molybdenum disulfide modified carbon nanofiber composites. The composite material synthesized through a series of steps exhibit excellent photocatalytic activity for the degradation of Rhodamine B and can be recycled for many times. And this invention has the advantages of simple preparation process, easy recovery and multiple use, etc., and has industrial application prospect in water pollution treatment.
Owner:SUZHOU UNIV
Three-dimensional flower-like In2S3/In2O3 composite microsphere photocatalytic material and preparation method thereof
InactiveCN105664973AIncrease profitInhibitory complexGas treatmentPhysical/chemical process catalystsHeterojunctionLattice oxygen
The invention discloses a three-dimensional flower-like In2S3 / In2O3 composite microsphere photocatalytic material and a preparation method thereof, belonging to the field of pollution control and technology. The preparation method comprises the following steps of taking thioacetamide as a sulfur source, substituting lattice oxygen in the In2O3 with sulfur ions through an ion exchange reaction, performing in situ generation of an In2S3 nanosheet on the surface of flower-like In2O3, and forming a heterojunction structure, wherein the morphology of the three-dimensional flower-like In2O3 is uniform, and the particle size of the three-dimensional flower-like In2O3 is 3.0 to 6.5 microns; coating the surface of / In2O3 microflowers with the In2S3 nanosheet. The used raw materials are low in price and easily-obtained, reaction conditions are easily controlled and the requirement on equipment is low, so the preparation method disclosed by the invention is an environmental-friendly preparation method. By using In2S3 / In2O3 composite microspheres, the utilization rate of the In2O3 to visible light can be improved, and the compounding of photon-generated carriers is inhibited; the In2S3 / In2O3 composite microspheres have good application value and prospect in the field of volatile organic contaminants.
Owner:DALIAN UNIV OF TECH
Preparation method and application of carbon nanofiber, tin disulfide, tin dioxide and sulfur composite material with heterojunction structure
ActiveCN107768620AGood adsorption capacity of lithium polysulfideImprove stabilityMaterial nanotechnologyLi-accumulatorsHeterojunctionTin dioxide
The invention relates to a preparation method and application of a carbon nanofiber, tin disulfide, tin dioxide and sulfur composite material with a heterojunction structure, and belongs to the technical field of an energy material. The method comprises the following steps: 1, dissolving tin tetrachloride, thioacetamide and carbon nanofiber into polypropyl alcohol and performing hydrothermal reaction to obtain a carbon nanofiber, tin disulfide and tin dioxide composite material with the heterojunction structure; 2, dipping the composite material obtained in the step 1 into a sulfur solution, taking out after 5 minutes, vacuum-drying and calcining at high temperature to obtain the carbon nanofiber, tin disulfide, tin dioxide and sulfur composite material with the heterojunction structure. The preparation method and the application of the carbon nanofiber, tin disulfide, tin dioxide and sulfur composite material with the heterojunction structure have the following advantages: the composite material has special interface effect, can effectively increase electrode surface electron and ion transmission speed and is favorable for realize efficient utilization of the sulfur and obtainingthe cyclic stable lithium sulfur battery. The composite material can be prepared by directly utilizing a one-step hydrothermal method, the preparation method is simple and practical, and the components are controllable.
Owner:HARBIN INST OF TECH
Method for producing high quality, ultra-thin organic-inorganic hybrid perovskite
ActiveUS9793056B1Improve efficiencyLight-sensitive devicesFinal product manufactureIodideAerosol jet printing
A method for making a layered perovskite structure comprises: a) performing a vapor assisted surface treatment (VAST) of a substrate with a surface passivating agent; b) applying a layer of PbI2 to the passivating agent; c) exposing the PbI2 to methylammonium iodide (CH3NH3I) in an orthogonal solvent; and d) annealing the structure. A PEDOT:PSS coated ITO glass substrate may be used. The surface passivation agent may be one a chalcogenide-containing species with the general chemical formula (E3E4)N(E1E2)N′C═X where any one of E1, E2, E3 and E4 is independently selected from C1-C15 organic substituents comprising from 0 to 15 heteroatoms or hydrogen, and X is S, Se or Te, thiourea, thioacetamide, selenoacetamide, selenourea, H2S, H2Se, H2Te or LXH wherein L is a Cn organic substituent comprising heteroatoms and X═S, Se, or Te. The passivating agent may be applied by spin-coating, inkjet-printing, slot-die-coating, aerosol-jet printing, PVD, CVD, and electrochemical deposition.
Owner:THE UNITED STATES OF AMERICA AS REPRESETNED BY THE SEC OF THE AIR FORCE
Preparation method of cobalt sulfide micro tube with hiberarchy structure
InactiveCN101746837ALarge specific surface areaHigh specific capacitanceSemi-permeable membranesFixed microstructural devicesEthylenediamineSynthesis methods
The invention belongs to an inorganic chemical synthesis method and in particular relates to a preparation method of a cobalt sulfide micro tube with hiberarchy structure; in the invention, water-soluble cobalt salt is used as a metal source, thioacetamide is used as a sulphur source, ethanediamine is used as metal chelating agent, and cetyl trimethylammonium bromide CTAB is used as a template agent, in a closed reactor, hydro-thermal reaction is carried out under a certain temperature condition, so as to synthesize the micron tube-like cobalt sulfide with the hiberarchy structure, the outer diameter of the tube is about 1.5micron, the thickness of the tube wall is about 400nm, the average length is about 15micron, the tube wall is a nanoscale hexagonal sheet, and the length and the thickness of the sheet are 90nm and 22nm respectively; the synthesis method has the advantages of cheap and easy-obtaining raw material, simple equipment, low reaction temperature and good process repeatability and overcomes the problem of environment pollution caused by organic solvent in the previous synthesis method; the obtained product has wide application prospect in the field of biology, catalysis and material science and the like.
Owner:NORTHEAST NORMAL UNIVERSITY
Synthetic method of graphite-like carbon nitride/molybdenum disulfide nanocomposite material
ActiveCN107376971AWidely used valueHigh purityPhysical/chemical process catalystsWater/sewage treatment by irradiationWater bathsThermal insulation
The invention relates to a synthetic method of a graphite-like carbon nitride / molybdenum disulfide (g-C3N4 / MoS2) nanocomposite material. The synthetic method comprises the following steps: firstly, weighing a certain amount of urea and then putting the urea into a corundum crucible; secondly, putting the corundum crucible holding the urea into a muffle furnace and then calcining at a certain temperature to obtain the g-C3N4; thirdly, weighing a certain amount of ammonium molybdate ((NH4)6Mo7O24.4H2O) and thioacetamide (CH3CSNH2)) and respectively dissolving the two substances in deionized water to obtain uniform solutions; fourthly, slowly dropwise adding the ammonium molybdate solution into the thioacetamide solution; fifthly, stirring, then transferring the mixed solution into a reaction still, carrying out thermal insulation under the hydrothermal condition that the temperature is 195 DEG C for 30 hours to obtain MoS2 nanopowder, and then carrying out separation, washing and drying; sixthly, taking a certain amount of the g-C3N4 and a certain amount of the MoS2, and then dissolving the substances in absolute ethyl alcohol, carrying out constant temperature ultrasonic operation for 2 hours and then drying in a water bath kettle with the temperature of 40 DEG C to obtain a finished product. The graphite-like carbon nitride / molybdenum disulfide (g-C3N4 / MoS2) nanocomposite material disclosed by the invention has the advantages of simple synthetic technology, large specific surface area (65 to 75m<2> / g) and excellent visible light photocatalytic performance.
Owner:LUOYANG INST OF SCI & TECH
Method for preparing copper sulphide nanosheet
The invention discloses a method for preparing a copper sulphide nanosheet, comprising the following steps of: dissolving copper chloride and surfactant in deionized water to prepare a solution A; and dissolving thioacetamide in the deionized water to prepare a solution B; 2) mixing two solutions, i..e. the solution A and the solution B serving as a reaction solution to carry out water bath reaction to prepare a hexagon copper sulphide nanosheet; and controlling the side length of the copper sulphide nanosheet to be between 55 and 140nm and the thickness to be between 8 and 20nm through controlling a reaction condition. The method has the characteristics of easiness in acquisition of raw materials, simple equipment, low cost, simplicity in operation, effectiveness, quickness and the like; and the prepared copper sulphide nanosheet is ordered in appearance, high in dispersibility, yield rate and stability, controllable in sizes and suitable for large-scale industrial production. The prepared copper sulphide nanometer material has wide application prospect in the fields of light-emitting diodes, photochemical catalysts, flourescent materials, electrochemical batteries, sensors, lasers, solar batteries and the like.
Owner:CHONGQING UNIV OF ARTS & SCI
Preparation of 2-(3-carboxaldehyde-4-hydroxy phenyl)-4-methyl-5-thiazole ethyl formate
InactiveCN101412699AEmission reductionHigh yieldOrganic chemistryHexamethylenetetramineEthyl acetate
The invention provides a method for preparing 2-(3-formaldehyde base-4-hydroxyphenyl)-4-methyl-5-thiazole ethyl formate. The method uses para-cyano-phenol and thioacetamide as raw materials which are reacted with each other to obtain 4-hydroxy-thiobenzamide, and the obtained product is reacted with 2-chloro acetylacetic ether to obtain 2-(4-hydroxyphenyl)-4-methyl-5-thiazole ethyl formate, and then is reacted with urotropine to obtain the 2-(3-formaldehyde base-4-hydroxyphenyl)-4-methyl-5-thiazole ethyl formate.
Owner:SHANGHAI INST OF PHARMA IND +1
Method for preparing transition metal ion-doped porous CdIn2S4 photocatalyst
The invention relates to a method for preparing a transition metal ion-doped porous CdIn2S4 photocatalyst. The invention aims to solve the problem of low catalytic activity in the conventional CdIn2S4 photocatalyst. The method comprises the following steps of: 1, dissolving bivalent cadmium salt, trivalent indium salt and thioacetamide into water or a nonaqueous solvent, adding a template agent and performing ultrasonication until the bivalent cadmium salt, the trivalent indium salt and the thioacetamide are dissolved completely; 2, adding transition metal salt and performing ultrasonication to obtain yellow colloidal precipitate; 3, performing heat treatment, cooling to room temperature, performing centrifugation, collecting the precipitate, and washing with distilled water; and 4, performing centrifugation, collecting the precipitate, ultrasonically washing with absolute ethanol, performing suction filtration and performing vacuum drying to obtain the transition metal ion-doped porous CdIn2S4 photocatalyst. The method is simple in process and simple and convenient in operation; no other impurities are produced; the prepared transition metal ion-doped porous CdIn2S4 photocatalyst has high visible light catalytic hydrogen production activity; and the method is applied in the field of photocatalytic materials.
Owner:HARBIN 6 RING PETROCHEM TECHN DEVCORP
Method for preparing single crystalline zns powder for phosphor
ActiveUS20030172868A1Controlled particle size and shapePolycrystalline material growthFrom normal temperature solutionsFluorescenceThiourea
This invention relates to a method for preparing a Zinc Sulfide powder, and provides a method for preparing a single crystalline powder of Zinc Sulfide (ZnS) a high crystallinity comprising a step of conducting a hydrothermal reaction of a) Zinc Oxide or Zinc acetate as Zinc source and b) thioacetamide or thiourea as Sulfur source at a temperature of 180 to 230° C. and a fluorescent substance using the same as a source.
Owner:LG CHEM LTD
Preparation method of tungsten oxide nano powder and metal tungsten nano powder
The invention provides a preparation method of tungsten oxide nano powder and metal tungsten nano powder. The preparation method is characterized by comprising the following steps: tungstate, acid solution and water are adopted as raw materials, and under the induction and adjustment of an inducer (thioacetamide), tungstate and acid solution are subjected to precipitation reaction; after the generated precipitate is dried or calcined in the non-reducing atmosphere, the tungsten oxide nano powder with the average particle size about 80nm is obtained; if the generated precipitate is calcined in the reducing atmosphere, the metal tungsten nano powder with the average particle size about 40nm can be obtained. The preparation method provided by the invention is simple in process, rapid in reaction, low in synthesis cost and suitable for mass production.
Owner:HEFEI UNIV
Preparation method of aqueous phase non-toxic white light quantum with multilayer core-shell structure
InactiveCN102618289AGood water solubilityImprove stabilityGas discharge lamp usageLuminescent compositionsPropanoic acidThio-
The invention relates to a preparation method of an aqueous phase non-toxic white light quantum with a multilayer core-shell structure. The preparation method comprises the following specific steps: (a) preparing a shell layer material Zn+mercaptopropionic acid (MPA)+thioacetamide (TAA): taking Zn(NO3)2 and adding the Zn(NO3)2 into a conical flask filled with deionized water, taking the MPA by using a miniature liquid-transferring gun; adding the TAA into the solution; fully stirring the solution and then adjusting the pH value of the mixed solution by using NaOH; and fully stirring the solution for later use; (b) adding the deionixed water, manganese chloride and the MPA in a three-necked bottle, adjusting the pH value and then introducing nitrogen gas and removing air in the three-necked bottle by using high-purity nitrogen gas; injecting sodium hydrogen selenide by using an injector and then allowing the manganese chloride and the sodium hydrogen selenide to be fully acted to form a selenide-rich MnSe quantum dot; then injecting zinc nitrate and growing for one hour; injecting the shell layer material in the step (a) and growing; then adding a copper chloride solution and growing; adding the shell layer material; and finally, regrowing to obtain the required white light quantum dot. The white light quantum dot synchronized by the preparation method is better in water solubility and stability and has broad application prospect.
Owner:SOUTHEAST UNIV
Preparation method and application of partially sulfurized metal-organic framework composite material
InactiveCN107376851AHighly selective adsorptionDifferent degrees of vulcanizationOther chemical processesOrganic-compounds/hydrides/coordination-complexes catalystsN dimethylformamideSynthesis methods
Owner:CHINA THREE GORGES UNIV
Molybdenum disulfide/titanium dioxide compound and preparation method thereof
ActiveCN104174414AImprove the lubrication effectImprove catalytic performancePhysical/chemical process catalystsBase-materialsMolybdateMicroparticle
The invention discloses a molybdenum disulfide / titanium dioxide compound and a preparation method thereof and relates to the technical field of lubricating agents and photo-catalysts. The molybdenum disulfide / titanium dioxide compound comprises a plurality of molybdenum disulfide particles and titanium dioxide particles in the presence forms of clusters; spherical molybdenum disulfide particles are arranged at the center of each cluster; the size of each spherical molybdenum disulfide particle is 100-300nm; the titanium dioxide particles are arranged around the perimeter of each cluster; the size of each titanium dioxide particle is 30-80nm; and the titanium dioxide particles in each cluster are uniformly deposited on the surfaces of the molybdenum disulfide particles. An acid environment is provided by hydrochloric acid which is produced by quickly hydrolyzing titanium tetrachloride; thioacetamide is quickly hydrolyzed in the acid environment to produce hydrogen sulfide; the hydrogen sulfide quickly reacts with molybdate to generate a molybdenum disulfide precursor; the hydrochloric acid is quickly consumed by the hydrolysis of the thioacetamide, so that the hydrolysis degree of the titanium tetrachloride is quickly improved, and thus a large amount of titanium dioxide is generated and deposited on the surface of the molybdenum disulfide precursor. The molybdenum disulfide / titanium dioxide compound is simple in preparation process, quick to react, low in production cost and suitable for mass production.
Owner:HEFEI UNIV
Hydroxylethylidene diphosphonic acid with arsenic content <=3ppm and preparation technique thereof
ActiveCN101386628AReduce arsenic levelsReduce pollutionGroup 5/15 element organic compoundsAcetic acidEtidronic acid
The invention discloses an etidronic acid with the content of arsenic less than or equal to 3ppm and a process for preparing the same. The method is to use phosphorus trichloride, acetic acid and ammonium thioacetamide as raw materials and comprises the following steps of: putting one-third of the acetic acid and the ammonium thioacetamide into a reaction kettle, stirring to control the temperature and the pressure, slowly dropping one-third of the phosphorus trichloride and putting one-third of the ammonium thioacetamide into the reaction kettle, stopping stirring and keeping stand; controlling the temperature and the pressure; dropping the remaining phosphorus trichloride into the reaction kettle; then stirring for 1 hour with the rotational speed of 50 to 60 revolutions per minute, raising the temperature slowly and reflowing; controlling the temperature and the pressure while reflowing; hydrolyzing the esters produced after reflowing under the negative pressure; concentrating the materials, filling air, removing impurities, reducing the temperature, putting the remaining phosphorus trichloride into the reaction kettle, sealing the reaction kettle and keeping stand, and then putting the materials into a mixing tank; regulating and filtering the materials so as to obtain an HEDP product. The product has extremely little arsenic with less than or equal to 3ppm, which not only reduces the environmental pollution, but also expands the application fields.
Owner:HENAN QINGSHUIYUAN TECH
Preparation method of cadmium sulfide-titanium oxide nanosheet composite photocatalyst
InactiveCN102626642AReduce usageAvoid harmPhysical/chemical process catalystsCadmium CationTitanium oxide
The invention discloses a preparation method of a cadmium sulfide-titanium oxide nanosheet composite photocatalyst. The preparation method comprises the following steps: carrying out electrostatic self-assembly on titanium oxide nanosheets having negatively charged surfaces, and divalent cadmium ions to obtain a metal cadmium ion intercalated lamellar phase; and reacting the metal cadmium ion intercalated lamellar phase with thioacetamide to obtain the cadmium sulfide-titanium oxide nanosheet composite photocatalyst. The preparation method which allows cadmium sulfide to be intercalated into the titanium oxide nanosheets to extend the absorption spectrum to a visible light region makes a visible light response purpose be realized and the utilization rate of solar energy by the catalyst be improved. The preparation method of the invention has the advantages of simple preparation, environmental protection, low preparation cost and the like; and the prepared cadmium sulfide-titanium oxide nanosheet composite photocatalyst has the advantages of good stability, high catalytic activity and the like.
Owner:ZHEJIANG SCI-TECH UNIV
Preparation method and application of graphene-molybdenum disulfide composite material
InactiveCN106378096AImprove solubilityFully contactedOther chemical processesWater contaminantsTetrafluoroethyleneNew energy
The invention discloses a preparation method and application of a graphene-molybdenum disulfide composite material, and belongs to the technical field of a new energy material. The method comprises the concrete steps that graphite oxide is taken and is dissolved in a container containing water; Na2MoO4.2H2O is added into the container; (2) the pH range of the solution is regulated to be 6 to 6.5, and thioacetamide is added into the container; (3) the solution is transferred into a polytetrafluoroethylene reaction kettle to take reaction for 18 to 30h; centrifugal precipitation is performed to obtain sediments and supernate; (4) removing the supernate, and the sediments are washed with the deionized water for 5 to 6 times; (5) the sediments are put into a 60 DEG C environment to be dried for 7 to 8h; the graphene-molybdenum disulfide composite material can be prepared. The preparation method is simple; the prepared graphene-molybdenum disulfide composite material has a good absorption effect on organic pollutants in water; green and environment-friendly effects are achieved; the requirements on production equipment are lower; wide application prospects are realized.
Owner:NANJING MEDICAL UNIV
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