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87 results about "Sublimed sulphur" patented technology
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Nickel disulfide carbon nano composite material and preparation method and application thereof
InactiveCN108832097AGood biocompatibilityStrong adhesionMaterial nanotechnologyHybrid capacitor electrodesCarbon compositesCarbon layer
The invention relates to a nickel disulfide carbon nano composite material and a preparation method and an application thereof, wherein the composite material is formed by coating a nickel disulfide nanosheet with a carbon layer. The preparation method comprises the following steps of preparing a nickel hydroxide nanosheet precursor by a hydrothermal method, performing magnetic stirring and dispersing in deionized water to obtain a uniform dispersion liquid of the nickel hydroxide nanosheet precursor, adding a buffering agent tris(hydroxymethyl) aminomethane hydrochloride, and adjusting the pHvalue to be 8.5 by adopting an alkali solution with the pH value of 13, adding dopamine hydrochloride, and magnetically stirring at room temperature for in-situ polymerization, and carrying out washing and centrifugally drying to obtain a nickel hydroxide nanosheet precursor / polydopamine composite material, and carrying out heat treatment and vulcanization with sublimed sulfur powder in a tubularfurnace in nitrogen atmosphere at a certain temperature to obtain the composite material. The preparation process is simple, easy to operate, green and non-toxic and friendly in material preparationprocess; and the prepared nickel disulfide carbon nano composite material is stable in structure, uniform in morphology and high in dispersion. The obtained nickel disulfide carbon nano composite material can be an ideal electrode material of a high-performance lithium ion battery, a supercapacitor and other new energy devices.
Owner:DONGHUA UNIV
Positive electrode material for lithium sulphur battery and preparation method thereof, and lithium sulphur battery
ActiveCN109713282AImprove capacity playImprove cycle stabilityCell electrodesLi-accumulatorsElectrochemical responseMetallic sulfide
A positive electrode material for a lithium sulphur battery and a preparation method thereof, and the lithium sulphur battery are disclosed. The positive electrode material comprises activated carbon,carbon black, transition metal or a transition metal compound, and sublimed sulfur; and the transition metal compound is metal carbide, metal boride, metal nitride, metal phosphide, metal oxide or metal sulfide. The activated carbon is utilized as a main body of sulfur carrying; the carbon black can carry sulfur and can also strengthen the conductivity of the positive electrode material; and thetransition metal or the transition metal compound can play a fixation role in lithium polysulfide produced in an electrochemical reaction, inhibits the shuttle effect of polysulfide ions, and enablesthe cycle performance of the lithium sulphur battery to be improved. The positive electrode material for the lithium sulphur battery disclosed by the invention has the advantages of being simple and easy to obtain, easy to be prepared on a large scale, and the like, and the lithium sulphur battery with long circulation, high specific capacity and high specific energy can be obtained.
Owner:ZHUHAI COSMX BATTERY CO LTD
Straw-based selective mercury removal material, preparation method and applications thereof
InactiveCN106237985AHigh removal rateFast removalOther chemical processesWater contaminantsNitrogen gasHigh selectivity
The present invention provides a straw-based selective mercury removal material preparation method, which comprises: (1) carrying out a steam explosion treatment on straws, and then treating at a temperature of 400-800 DEG C under vacuumizing and nitrogen atmosphere; (2) placing the product obtained in the step (1) into a reductive sulfur group-containing mixing liquid, carrying out stirring mixing, filtering, and drying, wherein the reductive sulfur group-containing mixing liquid is a mixing liquid of ammonium thiocyanate, ammonium thiosulfate and thioglycolic acid; and (3) mixing the product obtained in the step (2) and sublimed sulfur, heating under vacuumizing and nitrogen introducing conditions to achieve a temperature of 450 DEG C, maintaining for 2 h, carrying out program heating to 600-1000 DEG C, maintaining the vacuumizing and nitrogen introducing for 2 h, cooling, and grinding so as to obtain the straw-based selective mercury removal material. The invention further provides the mercury removal material prepared through the method and applications of the mercury removal material in mercury removal. According to the present invention, the straw-based selective mercury removal material has advantages of high mercury adsorption capacity, high mercury removal rate, rapid mercury removal, high selectivity, cheap and easily available raw materials, simple and feasible preparation process, environmental protection, economy, and good application prospect.
Owner:SICHUAN NORMAL UNIVERSITY
Preparing method and application of NiPS3 nanosheets of self-supporting structure
InactiveCN109772386ALarge specific surface areaLower transfer resistancePhysical/chemical process catalystsElectrodesNickel saltPowder mixture
Owner:HARBIN INST OF TECH
Method for preparing quantum dots by taking sublimed sulfur as sulfur source
InactiveCN112300794AHigh fluorescence intensityGood dispersionSulfur preparation/purificationNanoopticsFreeze-dryingPolyethylene glycol
The invention provides a method for preparing quantum dots by using sublimed sulfur as a sulfur source, and belongs to the field of nano material preparation. The preparation method is characterized by comprising the following steps: (1) respectively adding 0.5-6 g of sodium hydroxide, 3mL of polyethylene glycol (PEG400) and 1-10g of sublimed sulfur into 50mL of deionized water, and carrying out water bath reaction at 40-80 DEG C for 3-50 hours to obtain a mixed solution; (2) changing the mixed solution obtained in the step (1) from a water bath reaction to an ice bath reaction, and under a stirring condition, adding 10-50 mL of hydrogen peroxide in parts by weight to prepare a sulfur quantum dot solution with blue fluorescence characteristics; and (3) adding an anti-solvent acetone to settle the water-soluble sulfur quantum dots, centrifuging the sulfur quantum dots settled from the aqueous solution at a centrifugal rotating speed of 9000 r / min for 5 min, and freeze-drying the obtained precipitate (at a drying temperature of -30 DEG C for 12-18 h) to finally obtain white sulfur quantum dot powder. The preparation process is green, safe and easy to prepare, fluorescence intensity is enhanced, dispersity is good, and efficiency is high.
Owner:SHANDONG UNIV OF TECH
Method for preparing sulphur-supported porous carbon lithium battery electrode material by using waste polyurethane plastic
InactiveCN104241651AEasy to prepareImprove cycle stabilityElectrode collector coatingLi-accumulatorsComposite electrodePorous carbon
The invention discloses a method for preparing a sulphur-supported porous carbon lithium battery electrode material by using waste polyurethane plastic. The method comprises the following steps: with sublimed sulphur, potassium carbonate and waste polyurethane as raw materials, performing high-temperature heat treatment on the raw materials in a muffle furnace to prepare porous carbon, and performing hot melting and mechanical dispersing to prepare the sulphur-supported porous carbon lithium battery electrode material active substance. The method is characterized in that elemental sulphur is calcined and melted to enter the pores of porous carbon, electrode material slurry is prepared through a mechanical dispersing method, and finally drying by a vacuum drying oven is carried out to obtain the sulphur-supported porous carbon composite electrode material. Through an electrochemical test, the novel sulphur-supported porous carbon composite electrode material is high in cyclic stability, remarkable in rate performance and simple to prepare, is prepared from cheap raw materials, and has a commercial potential; in addition, test conditions are mild.
Owner:SHANGHAI UNIV
Method for synthesizing negative electrode material Fe2SSe of lithium-ion battery by one-pot solid-phase method
InactiveCN105938903AEasy to embedPromote prolapseElectrode thermal treatmentSecondary cellsEngineeringSynthesis Period
The invention discloses a method for synthesizing a negative electrode material Fe2SSe of a lithium-ion battery by a one-pot solid-phase method. A heat treatment procedure is mild; the standing time at 400 DEG C is relatively long; and a reaction failure or a great loss of a sulfur element caused by the phenomenon that raw material sublimed sulphur is easily sublimed at a high temperature to cause a quartz tube rupture is avoided. The operation steps are simple; the cost is low; the product purity is very high; the equipment requirements are simple; the synthesis period is short; the method is suitable for expanded production; a new way is provided for batch synthesis of the Fe2SSe; the obtained Fe2SSe is blocky-shaped particles; the microstructure is in a two-dimensional layer form; the agglomerate phenomenon is avoided; and the Fe2SSe with the two-dimensional layer structure is beneficial to intercalation and deintercalation of lithium ions in the charging and discharging processes when used as a lithium-ion negative electrode material.
Owner:YANGZHOU UNIV
Secondary lithium cell using sulfurized crosslinking PVC as cathode material
InactiveCN1564369AIncrease energy densityGood charge and discharge cycle performanceElectrode manufacturing processesSecondary cellsN dimethylformamideHigh energy
Cathode material is composed of 60-70%(Wt) sulfurization crosslinking PVC, 10-15% binder; 15-30% conduction agent. Preparation method includes following steps: obtaining solution of sodium polysulphide by dissolving mixed anhydrous sodium sulfide and sublimed sulfur in solvent of N,N-dimethylformamide; obtaining solution of PVC by dissolving PVC in solvent of N,N-dimethylformamide; obtaining sulfurization crosslinking PVC by dropping solution of sodium polysulphide to solution of PVC; powder product is obtained after dry. The disclosed cathode material grafts structure of multi sulfur linkage to framework of chain polymer to fix up S-S structure. Features are: no pollution in synthesizing process, high energy density and favorable charging and discharging cycle.
Owner:TIANJIN UNIV
New electrode modification method
InactiveCN103117377AImprove cycle performanceImprove charge and discharge efficiencyCell electrodesCarbon compositesLithium
The invention discloses a new electrode modification method. The new electrode modification method comprises the following steps of: firstly carrying out ball grinding on sublimed sulphur and acetylene black or superconductive carbon black in the mass ratio of 7:2, 1:1 or 8:2, and preparing a sulphur carbon composite material after drying; then mixing the sulphur carbon composite material with an acetylene black conductive agent and a binder PVDF (polyvinylidene fluoride) in the mass ratio of 7:2:1 by adopting a wet process, coating the obtained mixture on an aluminium foil, and preparing an electrode after drying; and coating a layer of membrane solution containing 1-5% of perfluorinated sulfonic acid substances on the surface of the electrode, so as to obtain the modified electrode. A lithium sulphur battery assembled by adopting the modified electrode (which is used as the positive electrode) prepared by using the method disclosed by the invention and metal lithium has a relatively good cycling performance and relatively high charging and discharging efficiency, and the efficiency is more than 92% and is far higher than that of a battery with an unmodified electrode.
Owner:TIANJIN UNIV
Temperature-rising method of sulfur combusting furnace
InactiveCN102936001AMeet production needsEasy to operateSulfur compoundsMetallurgyProcess engineering
The invention discloses a temperature-rising method of a sulfur combusting furnace. The temperature-rising method of the sulfur combusting furnace comprises: step 1, starting a fan to feed air into the sulfur combusting furnace; step 2, starting an ignition gun, wherein the ignition gun combusts in the sulfur combusting furnace; step 3, starting a liquid sulfur pump to feed liquid sulfur in a liquid sulfur groove into a spray gun, wherein the spray gun atomizes the liquid sulfur and sprays the liquid sulfur into the sulfur combusting furnace, and atomized sulfur is ignited by the ignition gun and combusted to produce SO2; and step 4, closing the ignition gun, wherein the atomized sulfur can be continuously combusted in the sulfur combusting furnace to produce the SO2, and simultaneously the temperature of the sulfur combusting furnace rises continuously and gradually and does not operate normally until the temperature reaches to 800-1200 DEG C. By means of the temperature-rising method, the SO2 is produced and no sublimed sulfur is produced in the temperature-rising process of the sulfur combusting furnace, and the SO2 is produced immediately once immediate ignition is performed. The production requirement of enterprises is met, considerable diesel for temperature rising of the sulfur combusting furnace is further saved, and the operation is convenient.
Owner:GUANGXI YEMAO ELECTROMECHANICAL AUTOMATION
Method for preparing titanium carbide two-dimensional nanosheets by high-temperature vulcanization heat treatment method
ActiveCN112320801APromote production developmentNo pollution in the processTitanium carbideAcid etchingSulfidation
The invention discloses a method for preparing titanium carbide two-dimensional nanosheets by a high-temperature vulcanization heat treatment method, which comprises the following steps of S1, puttingsublimed sulfur and titanium sulfur carbon powder into a mortar, and sufficiently grinding at room temperature to sufficiently and uniformly mix, S2, after grinding is finished, pressing the evenly-mixed raw material powder into a wafer in a dry mode, and sealing the wafer in a vacuum quartz tube, S3, placing the quartz tube in a heat treatment furnace to be heated to different temperatures for heat preservation, reducing the temperature to the room temperature after reaction, and acquiring a sulfur powder and titanium carbide mixture material in the quartz tube, and S4, dissolving sulfur powder with carbon disulfide liquid, filtering, and washing with water to obtain the single-phase black titanium carbide material. According to the preparation method, a new simple way is provided for preparation of the titanium carbide two-dimensional nanosheet material, so that production and development of the titanium carbide two-dimensional nanosheet material are promoted, and compared with preparation of the two-dimensional nanosheet material through HF acid etching, the method has the advantages of being free of pollution, capable of achieving batch production easily, low in cost and the like.
Owner:郑州伯利森新材料科技有限公司
Method for growing single-crystal two-dimensional transitional metal sulphide
ActiveCN108455673ALow priceQuality improvementPolycrystalline material growthMolybdenum sulfidesSingle crystalSulfide
The invention relates to a method for growing single-crystal two-dimensional transitional metal sulphide. The preparation method of the single-crystal two-dimensional transitional metal sulphide comprises the following steps: (a) dissolving transitional metal salt and strong alkali in water to obtain a mixture, and stirring the mixture to obtain a transparent and clarified precursor solution, wherein the transitional metal salt is inorganic molybdenum salt or inorganic tungsten salt, wherein a mass ratio of the transitional metal salt to the strong alkali is (1 to 10) to 1; (b) spin-coating the precursor solution on a substrate; (c) putting the substrate in the middle of a tubular furnace, taking and putting sulphur powder or selenium powder at a gas inlet end of the tubular furnace, and subsequently, vacuumizing the tubular furnace and filling inertia gas; heating to enable the sulphur powder or the selenium powder to be sublimed, enabling the sublimed sulphur powder or the selenium powder and the precursor solution to be reacted and annealed, and naturally cooling to obtain a final product. The two-dimensional metal prepared by the method has the advantages of high quality and good crystallinity, and moreover, the size of a triangular plate of the material can be grown greatly; the two-dimensional material can be directly applied to a semiconductor field effect tube, and additional transfer is not needed.
Owner:SUZHOU UNIV
Preparation method of transition metal sulfide nano composite electrode material
ActiveCN112349889APromote circulationShort preparation timeMaterial nanotechnologyCell electrodesCarbon compositesMetal-organic framework
The invention discloses a preparation method of a transition metal sulfide nano composite electrode material. The method comprises the following steps: dissolving a metal salt in deionized water, stirring until the metal salt is completely dissolved, respectively putting PTA and a metal salt solution into a microwave hydrothermal reaction kettle, dropwise adding hydrofluoric acid, and reacting at210 DEG C for 1 hour to obtain an MOFs precursor; and carrying out annealing treatment on the metal organic framework precursor and sublimed sulfur at 700-900 DEG C for 1-8 hours to obtain the metal sulfide and carbon composite material. According to the method, the MOFs precursor is synthesized and serves as a hard template, the structural characteristics of the MOFs precursor are kept while themetal sulfide is prepared through one-step carbonization and vulcanization, the method is suitable for various transition metal sulfides, the prepared material is small in size and uniform in carbon material distribution, the migration distance of ions is shortened, and the conductivity of the material is improved; and the structure of the MOFs precursor before vulcanization is maintained after vulcanization, so that the prepared material has relatively high reversible capacity, relatively good rate capability and cycling stability in energy storage application.
Owner:NANJING UNIV OF SCI & TECH
Sulfur-modified iron-cobalt oxide nanosheet Fenton-like catalyst as well as preparation method and use method thereof
ActiveCN113976145ARaw materials are cheap and easy to getEasy to preparePhysical/chemical process catalystsWater contaminantsPtru catalystOrganic dye
The invention belongs to the technical field of catalysts, and provides a sulfur-modified iron-cobalt oxide nanosheet Fenton-like catalyst and a preparation method thereof. The preparation method comprises the steps of mixing a cobalt nitrate hexahydrate solution, a ferrous sulfate heptahydrate solution, ammonium fluoride and urea, and then conducting a hydrothermal reaction to obtain solid precipitate; sequentially carrying out vacuum drying and calcining treatment on the solid precipitate to obtain a precursor; and calcining the precursor and sublimed sulfur in an inert atmosphere to obtain the sulfur-modified iron-cobalt oxide nanosheet Fenton-like catalyst. The invention also provides a method for degrading rhodamine B by using the sulfur-modified iron-cobalt oxide nanosheet Fenton-like catalyst. The sulfur-modified iron-cobalt oxide nanosheet Fenton-like catalyst disclosed by the invention has layered multi-stage flower-like morphology, can efficiently degrade organic pollutants in water, especially organic dyes, and has the removal rate of rhodamine B up to 100%.
Owner:HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
Method for preparing copper-indium sulfide optoelectronic thin film by adopting sulfate system two-step method
InactiveCN105428458ALower requirementImprove continuityFinal product manufacturePhotovoltaic energy generationIndiumSulfide
The invention provides a method for preparing a copper-indium sulfide optoelectronic thin film by adopting a sulfate system two-step method, and belongs to the technical field of preparation of the optoelectronic thin films for solar cells. The method comprises the following steps: firstly cleaning a stannic oxide conductive glass substrate, then putting C6H5Na3O7.2H2O, CuSO4.5H2O, In2(SO4)3, and Na2S2O3.5H2O into distilled water, and adopting an electrodeposition method to obtain a precursor thin film on the conductive glass substrate; naturally drying, and putting the precursor thin film into a tubular furnace added with hydrazine hydrate, enabling the precursor thin film not to be in contact with the hydrazine hydrate, wherein the hydrazine hydrate is added with sublimed sulfur powder; heating the precursor thin film in the sealed tubular furnace to enable the precursor thin film to be vulcanized, and finally taking out the sample and drying to obtain the copper-indium sulfide optoelectronic thin film. The method does not require a high-vacuum condition, has low requirements on the instrument and equipment, and is low in production cost, high in production efficiency and easy to operate; the obtained copper-indium sulfide optoelectronic thin film is relatively high in continuity and uniformity; and the main phase is the CuInS2 phase, so that the low-cost and large-scale industrial production can be realized.
Owner:SHANDONG JIANZHU UNIV
Preparation method of cadmium sulfide quantum dots with controllable sizes
InactiveCN103936057AReduce pollutionGood monodispersityCadmium sulfidesLuminescent compositionsOleylamineInert gas
The invention relates to a preparation method of cadmium sulfide quantum dots with controllable size. The preparation method comprises the following steps: (1) adding cadmium nitrate tetrahydrate and sublimed sulfur to an oleylamine solution, and uniformly mixing so as to obtain a mixed solution; stirring the mixed solution at a room temperature, feeding inert gas argon, heating under the protection of the inert gas argon, and carrying out heat preservation at the temperature so as to obtain a yellow transparent mixed solution; heating the yellow transparent mixed solution in the presence of the inert gas argon, then carrying out heat preservation at the temperature, and naturally cooling to a room temperature so as to obtain a cooling solution; (2) adding absolute ethyl alcohol to the cooling solution so as to separate out yellow precipitates, and carrying out supersonic centrifugation so as to obtain a yellow precipitates and reaction mother liquor; centrifugally washing the precipitates by using an absolute ethyl alcohol and normal hexane mixed solution, and drying in vacuum until the weight is constant so as to obtain yellow powdery cadmium sulfide quantum dots with different sizes. The preparation method is simple, relatively low in cost and less in environmental pollution.
Owner:NORTHWEST NORMAL UNIVERSITY
Process for preparing cadmium sulfide quantum dots by low temperature two-phase synthesis method
InactiveCN104045105AWide variety of sourcesLow reaction temperatureMaterial nanotechnologyCadmium sulfidesThioureaTrioctylphosphine
The invention discloses a process for preparing cadmium sulfide quantum dots by a low temperature two-phase synthesis method. The process is as follows: a cadmium source is dissolved in oleylamine at room temperature, oleic acid is added for dilution to prepare a cadmium solution as an oil phase; the cadmium source is one of cadmium chloride, cadmium sulfate and cadmium nitrate, the volume ratio of oleylamine to oleic acid is 1:4; sublimated sulfur powder is ultrasonically dissolved in dimethyl sulfoxide containing tri-n-octylphosphine at room temperature to prepare a sulfur solution, or a sulfur compound is directly dissolved in the dimethyl sulfoxide containing the tri-n-octylphosphine to prepare a sulfur solution; the sublimated sulfur powder or the sulfur compound is used as a sulfur source, the sulfur compound is thiourea or sodium sulfide, the tri-n-octylphosphine is used as a wrapping agent, the molar ratio of sulfur source to wrapping agent is 2:1; the cadmium solution is mixed with the sulfur solution for reaction for 30 minutes under the condition of water bath at 70 DEG C, and the cadmium sulfide quantum dots are produced in the oil phase. The process has the advantages of wide raw material sources and low reaction temperature, the prepared cadmium sulfide quantum dots are uniform in particle size and narrow in size distribution, the absorption peak position can be adjusted between 396 to 445 nm, and the fluorescence is strong.
Owner:GUILIN UNIVERSITY OF TECHNOLOGY
Antibacterial false tooth soft lining material and application thereof
ActiveCN104546505AModerate mechanical propertiesSmall water absorptionImpression capsDentistry preparationsGutta-perchaCandida albicans
The invention discloses an antibacterial false tooth soft lining material which is prepared from gutta-percha in a compounded manner. The antibacterial false tooth soft lining material can be also named as an gutta-percha composite false tooth soft lining material, and is prepared from a rubber matrix, a vulcanizing activator, magnesium oxide, stearic acid, sublimed sulfur, a sulfur-containing accelerant and an anti-aging agent, wherein the rubber matrix consists of gutta-percha and cis-polybutadiene; the gutta-percha accounts for 90% of the rubber matrix in mass percentage. The antibacterial false tooth soft lining material has certain antibacterial property, and particularly has a relatively high inhibition function on candida albicans.
Owner:THE SECOND XIANGYA HOSPITAL OF CENT SOUTH UNIV
External-use medicament for treating psora
InactiveCN101433552AHeal fastNo sequelaeHeavy metal active ingredientsHydroxy compound active ingredientsSide effectScabies
The invention relates to an external used medicine for treating scabies, which is ointment obtained by using sublimed sulfur, realgar, borneol, camphor, mercurous chloride, tetracycline powder and dexamethasone powder as raw material drugs, crushing the raw material drugs into fine powder, adding vaseline into the fine powder and stirring the mixture evenly, and sterilizing the mixture. The ointment for treating the scabies has the function of quick healing, does not leave any sequela, has no any toxic side effect and anaphylactic reaction, is simple and practical to use, costs low, and can be generally accepted by patients. Through clinical experiments on 1,000 cases of scabies patients, all the scabies patients are healed, so the cure rate reaches 100 percent.
Owner:崔凤玉
Special mite-killing chemical for bees and use method
InactiveCN105145627APlay the role of disinfection and sterilizationWill not polluteBiocideAnimal repellantsBee productsMetrifonate
The invention belongs to the technical field of pesticides and particularly relates to a special mite-killing chemical for bees and a use method. According to the technical scheme, the special mite-killing chemical for the bees comprises components in percentage by weight as follows: 15%-25% of sublimed sulfur, 10%-20% of carbolic acid, 5%-15% of trichlorfon, 10%-20% of boric acid, 15%-25% of boric acid, 5%-15% of naphthalene and the balance of coal ash, and the components are mixed to prepare powder. The chemical contains simple components and does not contain chemical drugs that are harmful to a human body, the components are easy to volatilize and decompose and are pollution-free for bee products, and the chemical is volatilized quickly, is safe and harmless for the bees and has high mite-killing efficiency.
Owner:刘河庆
Two-dimensional transition metal sulfide and preparation method thereof
The invention relates to a two-dimensional transition metal sulfide and a preparation method thereof. According to the technical scheme, aluminum foil and target metal foil with the same size or aluminum foil and each of the two kinds of metal foil with the same size are soaked in absolute ethyl alcohol, and are ultrasonically cleaned, dried, aligned and stacked, and the metal foil stacked neatlyis obtained; the roll gap of a two-high rolling mill is adjusted to be 0.1 mm, the metal foil stacked neatly is folded and rolled repeatedly 15-50 times, the folded and rolled metal foil is soaked inan etchant for 12-48 hours, filtering is performed, ultrasonic treatment in an ethanol solution is performed, a suspension is taken, centrifuged twice and filtered twice, drying is performed, and thetarget two-dimensional transition metal foil is obtained; finally, a porcelain boat with the target two-dimensional transition metal foil laid at the bottom is placed in the downwind direction of a constant temperature area of a vacuum tube furnace, and a porcelain boat with sublimed sulfur laid at the bottom is placed in the upwind direction of the constant temperature area of the vacuum tube furnace; two-dimensional transition metal sulfide is obtained under the condition of circulating argon and temperature kept at 300-800 DEG C for 3-12 h. The two-dimensional transition metal sulfide and the preparation method thereof have the advantages of high production efficiency, simple process and controllable product thickness.
Owner:WUHAN UNIV OF SCI & TECH
High-concentration anion-doped TiO2 as well as preparation method and application thereof
InactiveCN113213530AOvercoming Pollution DefectsShort processTitanium dioxideHigh concentrationReduction treatment
The invention provides high-concentration anion-doped TiO2 as well as a preparation method and application thereof, and the preparation method comprises the following steps: pre-carbonizing a titanium source, introducing an oxygen vacancy defect into the pre-carbonized titanium source through a high-temperature hydrogen reduction method, doping through doping source diffusion in a protective atmosphere, washing a doped product, and carrying out drying in vacuum to obtain high-concentration anion doped TiO2, wherein the titanium source is at least one of Ti-MOF, anatase and rutile type TiO2, and the doping source is one of sublimed sulfur, elemental selenium and red phosphorus. According to the preparation method, oxygen vacancy defects are introduced through hydrogen reduction treatment, oxygen vacancies are used for assisting heteroatoms in entering titanium dioxide or Ti-MOF crystal lattices, the high-concentration anion doping level is achieved, the preparation method has the advantages of being short in process, easy to operate, rapid and efficient, and industrial production is facilitated.
Owner:CENT SOUTH UNIV
Preparation method of sulfide complete water splitting catalyst with three-dimensional co-continuous macroporous heterostructure
The invention discloses a preparation method of sulfide complete water splitting catalyst with a three-dimensional co-continuous macroporous heterostructure. The preparation method comprises the following steps: preparing nickel-cobalt hydroxide macroporous gel; and cutting up the nickel-cobalt hydroxide macroporous gel, carrying out heat treatment in an air atmosphere to obtain a NiCo2O4 block, and vulcanizing the NiCo2O4 block by adopting sublimed sulfur to obtain the Ni-Co-S ternary sulfide capable of being used as the complete water splitting catalyst. The stable three-dimensional co-continuous macroporous heterostructure sulfide complete water splitting catalyst is prepared in a mode of combining a sol-gel method and a gas phase vulcanization method, and the three-dimensional co-continuous macroporous heterostructure sulfide complete water splitting catalyst not only has a unique macroporous skeleton morphology, but also has relatively high catalytic performance, and has very high stability in a long-time catalytic reaction under relatively high current.
Owner:ZHEJIANG UNIV HANGZHOU GLOBAL SCI & TECH INNOVATION CENT
External Chinese medicine for treating psoriasis and fungal infectious skin diseases and preparation method thereof
ActiveCN103948726BNo pollution in the processNo impuritiesHeavy metal active ingredientsAntimycoticsSide effectSaposhnikovia
Owner:齐春发
Method for synthesizing one-dimensional red long afterglow material
InactiveCN103146388AMaintain nanotubular structureOvercome destructionLuminescent compositionsSulfidationCrystallization temperature
The invention discloses a method for synthesizing a one-dimensional red long afterglow material, and belongs to the technical field of preparation of a phosphor material. The method is characterized by comprising the steps of carrying out hydrothermal reaction on Y3<+>, Eu<3+>, Mg<2+>, and Ti<4+> at the same time to generate a Y(OH)3 precursor doped with Eu<3+>, Mg<2+>, and Ti<4+>, vulcanizing the precursor by mixture of carbon powder and sublimed sulfur to generate a one-dimensional Y2O2S:Eu<3+>, Mg<2+>, and Ti<4+> red long afterglow luminescent material. The red long afterglow luminescent material prepared by the method disclosed by the invention is low in crystallization temperature of the substrate; ions which need to be doped are doped into the substrate at the hydrothermal stage of fabricating the precursor; the good nano tubular structure of a sample can be kept in later vulcanizing and sintering processes; and the physical and chemical properties are stable.
Owner:TAIYUAN UNIV OF TECH
Method for preparing biomass carbon-loaded molybdenum sulfide electrode material by one-step method
PendingCN113463111AHigh purityGood crystal formCarbon preparation/purificationMolybdenum sulfidesNanomaterialsEnvironmental chemistry
The invention belongs to the technical field of nano material preparation, and discloses a method for preparing a biomass carbon-loaded molybdenum sulfide electrode material by a one-step method. The method comprises the following steps: lotus pollen is used as a biomass carbon source, ammonium nitrate, ammonium molybdate and sublimed sulfur are used as raw materials, and the mass ratio of the lotus pollen to the ammonium nitrate to the ammonium molybdate to deionized water to the sublimed sulfur is (1-2): (2-4): (0.37-0.74): (12-24): (0.5-5). The method is characterized by performing calcination reaction in a tubular furnace, and adjusting variables such as the content of a carbon source, ammonium nitrate, ammonium molybdate and sublimed sulfur, the reaction temperature and the like to prepare the biomass carbon-loaded molybdenum sulfide electrode material. The method is simple to operate, low in reaction temperature and low in energy consumption. The prepared molybdenum sulfide particles are good in dispersity on biomass carbon, uniform in size and high in stability. The biomass carbon-loaded molybdenum sulfide nano-composite electrode material prepared by a one-step method is applied to an electro-catalytic water desorption reaction, has excellent electrochemical performance and is suitable for industrial production.
Owner:JIANGSU UNIV
Compound preparation for treating acne, psoriasis and acne rosacea
ActiveCN104434956AWide range of indicationsGood curative effectHydroxy compound active ingredientsOintment deliveryCuticleIrritation
The invention firstly discovers compound of three active ingredients, namely tretinoin, metronidazole and sublimed sulfur has a definite effect for treating acne, psoriasis and acne rosacea. Massive scientifically designed experiments prove that compared with 'combined use of three single medicinal materials' and 'compound of two medicinal materials and a single medicinal material', the compound preparation of tretinoin, metronidazole and sublimed sulfur has an effect of improving acne like syndromes remarkably better than that of the four combined groups; in an influencing test of mouse tail scale granular layer formation for simulating psoriasis, improvement of the compound preparation for the formation rate of a mouse tail scale granular layer is remarkably better than that of the four combined groups; and in an experiment of evaluating the treatment effect on acne rosacea by an in-vitro acaricidal test, the mite death rate of the compound preparation is remarkably higher than the four combined groups. Furthermore, skin irritation contrast experiments indicate that compared with combined use of three single medicinal materials, the compound containing the three medicinal materials has smaller skin irritation.
Owner:CHONGQING HUAPONT PHARMA
Large-scale preparation method of single-phase NiS2 powder
ActiveCN111129490AHigh purityImprove conductivityCell electrodesSolid electrolyte cellsHeat analysisPhysical chemistry
The invention discloses a large-scale preparation method of single-phase NiS2 powder. The preparation method comprises the steps of 1) mixing metal nickel powder and sublimed sulfur powder in proportion; 2) performing high-temperature solid-phase synthesis heat treatment on the mixed powder in a protective gas atmosphere; 3) carrying out grinding, sieving and phase characterization on the synthesized powder, if a phase characterization result shows that sulfur is insufficient, supplementing sublimed sulfur powder for mixing, and carrying out high-temperature solid-phase synthesis again according to the condition in the step (2) until metal nickel is completely synthesized into a NiS2 phase; and 4) performing differential thermal analysis on the NiS2 powder synthesized in the step 3), if the differential thermal analysis shows that the mass percentage content of elemental sulfur is higher than 0.2%, removing redundant elemental sulfur through high-temperature heat treatment until the mass percentage content of elemental sulfur is lower than 0.2%. The process is simple, large-scale production can be achieved, the obtained NiS2 powder is high in purity, high in conductivity and uniform in particle size, and a foundation is laid for obtaining high-power thermal batteries.
Owner:INST OF PROCESS ENG CHINESE ACAD OF SCI
Preparation method of sulfur-doped titania nanofibers
ActiveCN110846888AUniform particle sizeImprove stabilityHollow filament manufactureCell electrodesTio2 nanotubePyrrolidinones
The invention discloses a preparation method of sulfur-doped titania nanofibers. The preparation method includes the steps: dissolving tetrabutyl titanate serving as a main raw material in mixed solvents of N, N-dimethyl formamide, ethanol and acetic acid, and adding polyvinylpyrrolidone to obtain precursor mixture solution; performing electrostatic spinning by the aid of a coaxial technology under a certain voltage and flow rate; sintering electrostatic spinning products to obtain TiO2 nanotubes, mixing, melting and sulfurizing the TiO2 nanotubes and sublimed sulfur, adding the sulfurized TiO2 nanotubes into ethanol solution of the tetrabutyl titanate, adding ammonia water and hydrolyzing the tetrabutyl titanate to generate TiO2 externally coating sulfur and the TiO2 nanotubes to form thesulfur-doped titania nanofibers. The prepared sulfur-doped titania nanofibers have good electrochemical performance and are simple to operate, low in raw material cost, less in equipment investment and suitable for batch production in the whole preparation process.
Owner:NINGBO UNIV
Synthetic method of thioamide compound
The invention discloses a synthesis method of a thioamide compound, which comprises the following steps: under the protection of inert gas, by taking a halide as a substrate, sublimed sulfur as a sulfur source, a copper group metal complex formed by combining copper group metal salt and a ligand as a catalyst, alkali as an accelerant, formamide as a solvent and an amine source, reacting at room temperature to 60 DEG C to obtain the thioamide compound; stirring and reacting the abovef materials for 8-12 hours, and carrying out post-treatment on the reaction product to obtain the thioamide compound. According to the invention, the thioamide compound is synthesized by a three-component one-pot method of halide, sublimed sulfur and formamide; the method has the advantages of mild and safe operation conditions, short reaction time, simplicity and convenience in operation, high product yield and the like.
Owner:QUZHOU RES INST OF ZHEJIANG UNIV +1
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