659 results about "Thioacetamide" patented technology

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.

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.

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.

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.

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.

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.

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.

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.

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.