43results about "Antimony sulfides" patented technology

The invention relates to a method for forming a telescoped multiwall nanotube. Such a telescoped multiwall nanotube may find use as a linear or rotational bearing in microelectromechanical systems or may find use as a constant force nanospring. In the method of the invention, a multiwall nanotube is affixed to a solid, conducting substrate at one end. The tip of the free end of the multiwall nanotube is then removed, revealing the intact end of the inner wall. A nanomanipulator is then attached to the intact end, and the intact, core segments of the multiwall nanotube are partially extracted, thereby telescoping out a segment of nanotube.

The invention discloses a solution processing preparation method of a crystalline Sb2S3 thin film. The solution processing preparation method comprises the following steps of dissolving a simple compound in mixed organic solvent at room temperature to prepare a stable, transparent and uniform Sb2S3 reaction precursor solution; depositing a reaction precursor thin film on a substrate by a solution processing technology at room temperature and normal pressure; performing thermal treatment on the reaction precursor thin film to prepare the crystalline Sb2S3 thin film with great grain size, high density, controllable thickness and large absorption coefficient. A preparation technology disclosed by the invention has the advantages of simple and feasible method, low cost, and low toxicity and safety of used solvent; the defects of high requirement on equipment, complex preparation conditions, use of high-toxicity solvent, low degree of crystallinity of the Sb2S3 thin film and the like in the prior art are overcome; the solution processing preparation method has an important application value in the fields of photoelectric materials, photovoltaic materials, devices and the like.

Methods of synthesizing few-layer two-dimensional (2D) Sb₂S₃ nanosheets using scalable chemical exfoliation are provided. The 2D Sb₂S₃ nanosheets can be developed as bi-functional anode materials in both lithium ion batteries and sodium ion batteries. The unique structural and functional features brought by 2D Sb₂S₃ nanosheets can offer short electron/ion diffusion paths and abundant active sites for surface redox reactions.

The invention discloses a transition metal chalcogen-group carbon-based heterostructure composite material with a regular morphology and a preparation method and application of the transition metal chalcogen-group carbon-based heterostructure composite material. The preparation method comprises the following step: calcining starting materials including transition metal acetylacetonates and chalcogenides under a protective atmosphere to obtain the transition metal chalcogen-group carbon-based heterostructure composite material with the regular morphology, uniform multi-stage carbon coating andstable structure. When applied to preparation of an energy storage device, the transition metal chalcogen-group carbon-based heterostructure composite material with the regular morphology has excellent electrochemical performance. Particularly, compared with an existing material, the transition metal chalcogen-group carbon-based heterostructure composite material with the regular morphology has obvious advantages on the multiplying power and cycle stability of an energy storage device.

The invention belongs to the technical field of batteries, and discloses a ZnS/SnS/antimony trisulfide [at] C hollow nanocube structure composite material, and a preparation method and application thereof. The composite material is prepared by the following steps: mixing water, tin tetrachloride, sodium citrate, zinc chloride and sodium hydroxide, washing with water, and drying to obtain H-ZHS; ultrasonically dispersing H-ZHS in an aqueous solution, adding sodium hydroxide or potassium hydroxide for etching, adding dopamine, stirring, washing with water and drying to obtain H-ZHS[at]PDA; adding H-ZHS[at]PDA and thiourea; vulcanizing in a hydrogen atmosphere at the temperature of 300-350 DEG C; cooling to room temperature, mixing the obtained H-SnS<2>/ZnS[at]PDA, antimony trichloride and absolute ethyl alcohol, carrying out hydrothermal reaction at 90-120 DEG C, washing with water, drying, carbonizing the obtained H-ZnS/SnS<2>/Sb<2>S<3>[at]PDA in an argon atmosphere at 500-530 DEG C, and cooling to room temperature, so as to obtain the H-SnS<2>/Sb<2>S<3>[at]PDA.

The invention provides a synthesis method of Sb2S3 nanorods. The method comprises the following steps that 1, high-purity sulfur and oleylamine are added into a reaction flask, vacuumizing is performed, and stirring and heating are performed at the same time; 2, when the temperature reaches 60 DEG C, nitrogen is replaced three times; 3, when the temperature reaches 90 DEG C, a nitrogen valve is turned on, and a vacuum pump is turned off; after sulfur is dissolved completely, the reaction is stopped; 4, SbCl3 is added into the reaction flask, then, octadecene and oleylamine are added, vacuumizing is performed, and stirring and heating are performed at the same time; 5, when the temperature reaches 60 DEG C, nitrogen is replaced three times; 6, when the temperature reaches 100 DEG C, the nitrogen valve is turned on, the vacuum pump is turned off, when the temperature is increased to 200 DEG C, a sulfur source is injected, after the reaction is performed for 5-20 min, heating is stopped,and the nanorods are obtained after centrifuging. According to the method for synthesizing antimony sulfide through a thermal injection method, the reaction time is greatly shortened, the crystallinestate can be achieved directly without annealing, and working procedures are simpler.

The invention discloses an antimony trisulfide nanodot/sulfur-doped carbon composite material, a preparation method thereof and application of the antimony trisulfide nanodot/sulfur-doped carbon composite material to a sodium/potassium ion battery. Sb2S3 nanodots are uniformly distributed in pores and on the surface of sulfur-doped carbon, so that the composite material can be formed. According tothe preparation method, an organic antimony salt is placed in a reducing atmosphere so as to be subjected to reduction treatment, so that an antimony nanodot/carbon composite material can be obtained; the antimony nanodot/carbon composite material and a sulfur source are arranged in a protective atmosphere so as to undergo a solid-phase reaction, so that the antimony trisulfide nanodot/sulfur-doped carbon composite material can be formed. The Sb2S3 of the composite material is a nano point material; the nano point material has a unique volume effect, a surface effect, a quantum size effect, amacroscopic quantum tunnel effect and the like and can effectively enhance the electrochemical properties of the composite material; the sulfur-doped carbon carrier can enhance the conductivity of the composite material and can relieve the large volume expansion of the antimony trisulfide material in a charging/discharging process. The antimony trisulfide nanodot/sulfur-doped carbon composite material presents characteristics such as high capacity and favorable cycle stability when being used for sodium-ion and potassium-ion batteries.

The invention discloses a preparation method of antimony sulfide nanoparticles under controllable conditions. The preparation method mainly comprises the following steps: dissolving, temperature control, precipitation, and washing or calcination. An alkaline solution is used in the dissolving step to dissolve antimony sulfide powder; a surfactant and a DMF solution are added, and then the obtained solution is stored at a specific temperature under a specific pressure to wait for solid precipitation; and precipitated solid is immersed and cleaned with deionized water or acetone, the obtained solid is centrifuged and dried, or undergoes high temperature calcination in a muffle furnace under the protection of nitrogen. Compared with present nanometer antimony sulfide preparation methods, the preparation method disclosed in the invention has the advantages of simplicity in operation, no synthesis, common used reagents, good economic property, and suitableness for large-scale promotion and application.

The invention belongs to the technical field of environmental engineering water treatment and particularly relates to a microorganism for preparing broccoli-shaped antimony sulfide and application of the microorganism. The microorganism refers to marine Halomonas sp.X3 which is preserved in the China Center for Type Culture Collection located in Wuhan University on May 30, 2019, and a preservation number is CCTCC M 2019409. The strain is an indigenous microorganism screened from marine sediments and can be used for preparing nano antimony sulfide by adopting potassium pyroantimonate and sodium thiosulfate or sodium sulfite as precursors. Nano antimony sulfide prepared from the microorganism is broccoli shaped and can serve as a photocatalyst for accelerating light degradation of azo dye compounds. Currently, antimony sulfide is prepared according to chemical methods mostly. Shaped-controllable antimony sulfide is prepared from the microorganism for the first time, and high innovativeness is realized.

The present invention aims to provide a sulfide semiconductor-forming coating liquid capable of easily forming a sulfide semiconductor having a large area, the sulfide semiconductor being useful as a semiconductor material for photoelectric conversion materials. The present invention also aims to provide a sulfide semiconductor thin film produced using the sulfide semiconductor-forming coating liquid; and a thin film solar cell. The present invention provides a sulfide semiconductor-forming coating liquid, the coating liquid containing a complex containing a metal element of group 15 of the periodic table and sulfur.

The invention discloses a preparation method and application of an antimony sulfide nanorod. The preparation method comprises the following steps: by taking absolute ethyl alcohol and oleylamine as solvents, firstly dissolving an antimony source into an absolute ethyl alcohol beaker with a certain volume, ultrasonically stirring for several minutes, uniformly dissolving, then adding a sulfur source, stirring on a magnetic stirrer for 0.5 hour until the sulfur source is completely dissolved, finally adding an oleylamine solution into the mixed solution, continuously stirring for 0.5 hour, pouring into a high-pressure reaction kettle, carrying out a reaction, cooling to room temperature, respectively centrifuging three times by using cyclohexane and glacial acetic acid to obtain a black precipitate, and drying the black precipitate in a drying oven to prepare the uniform sulfide ladder nanorod. The method has the advantages of simple equipment, simple experimental operation, short production period, good particle dispersity, low cost and easiness in industrial production, and solves the common problems of remarkable volume effect, poor conductivity and the like in the sodium ion battery negative electrode material, so that the electrochemical performance of the electrode material is effectively improved.

The invention discloses a method for preparing a sodium-ion battery negative electrode material antimony sulfide from high-arsenic-antimony soot. The method comprises the following steps: by taking high-arsenic-antimony soot (comprising specific components of As2O3, As4O6, Sb2O3 and the like) as a raw material, forming soluble arsenate from arsenic by adopting a pressurized oxidation-alkaline leaching method, and filtering to remove the soluble arsenate; then dissolving antimony (Sb2O3) existing in a solid phase by using diluted hydrochloric acid to obtain a relatively pure antimony trichloride solution; under a stirring condition, adding a proper amount of a water-soluble sulfur source into the obtained solution, and uniformly mixing; transferring the obtained mixed solution into a reaction kettle and carrying out hydrothermal reaction at a certain temperature; after the hydrothermal reaction is finished, washing with alcohol for multiple times, and drying to obtain a product. According to the patent, a tedious metal extraction preparation process is avoided, antimony is directly converted into the sodium ion battery negative electrode material with higher practical value, and the recovery rate of antimony can reach 85% or above.

The invention discloses a preparation method of high-purity antimony sulfide. The method comprises the following steps: putting low-purity antimony sulfide or antimony sulfide concentrate into a vacuum furnace, carrying out first distillation under a first preset temperature condition to volatilize impurities with boiling points lower than that of antimony sulfide and antimony sulfide at the sametime, and collecting antimony sulfide only containing low-boiling-point impurities by controlling vacuum distillation and condensation conditions; placing the antimony sulfide containing the low-boiling-point impurities into another vacuum furnace; and homogenizing and re-synthesizing the collected antimony sulfide under the normal pressure and the second preset temperature condition, then carrying out secondary distillation under the vacuum condition for impurity removal, so that impurities with the boiling point lower than that of antimony sulfide volatilize wherein antimony sulfide remains,thereby preparing high-purity antimony sulfide, the second preset temperature being lower than the first preset temperature. According to the method, chemical agents such as acid and alkali are not used, three-waste emission is avoided, the technological process is simple and easy to operate, and the production efficiency is high; the purity of antimony sulfide prepared by the method is up to 99.9% or above.

The invention discloses a carbon nanotube-in-tube@antimony sulfide/antimony composite material, a preparation method thereof and application in preparation of a negative electrode of a lithium ion battery. In the carbon nanotube-in-tube@antimony sulfide/antimony composite material, the carbon nanotube-in-tube is of a tube-in-tube structure which takes a carbon nano tube as an inner tube and an amorphous carbon nano tube as an outer tube, and the antimony sulfide/antimony is a mixture of antimony sulfide and metal antimony formed by reducing the antimony sulfide, and is tightly fixed in the carbon nanotube middle tube. The preparation method comprises the following steps: growing ZIF-8 particles on the surface of the carbon nanotube, then coating the surface of the carbon nanotube with a layer of RF resin, performing vulcanization treatment and ion exchange, and finally performing carbonization and calcination to obtain a final product. The conductivity and the structural stability of antimony sulfide can be improved, and the rate capability, the cycle performance and the reversible capacity of antimony sulfide can be improved.

The invention relates to a method for preparing an antimony sulfide film through low-temperature plasma vulcanization, and belongs to the technical field of photoelectric functional materials. The method comprises the steps: preparing a metal antimony, antimony oxide or antimony hydroxide film, carrying out low-temperature plasma treatment on a solid sulfur source by using a low-temperature plasmagenerator to form plasma-state sulfur, and carrying out low-temperature plasma vulcanization treatment on the film by using the plasma-state sulfur to obtain the antimony sulfide film. In an inert gas environment, inert gas is ionized under the action of an electric field to obtain high-activity inert gas ions and electrons, and the high-activity inert gas ions and electrons collide with a solidsulfur source to generate plasma-state sulfur; ambient temperature rise caused by mutual collision among various particles increases the thermal motion of the solid sulfur source, and further promotesthe generation of plasma-state sulfur. The plasma-state sulfur has high activity, so that vulcanization of the film can be quickly realized to obtain the antimony sulfide film. The antimony sulfide film is uniform in component, flat and compact in structure and large in grain size.

The invention provides a composite sulfide and a preparation method and application thereof. The preparation method comprises the steps that a precursor and a sulfur source are subjected to heat treatment at the temperature of 450 DEG C-650 DEG C to obtain the composite sulfide, wherein the precursor comprises XSb, and X comprises Ga and/or In. The precursor and the sulfur source are subjected to heat treatment at a specific temperature to prepare the composite sulfide, and the prepared composite sulfide has excellent low-temperature performance. The sodium-ion battery prepared from the composite sulfide has relatively high first-circle specific capacity, relatively good rate capability, relatively good cycling stability and excellent low-temperature electrochemical performance.

The invention discloses a method and a system for purifying antimony sulfide concentrate molten salt electrolysis smoke dust and preparing sulfur. The method comprises the following steps: uniformly spreading the antimony sulfide concentrate molten salt electrolysis sulfur-containing smoke dust on a belt conveyor through a feeding funnel, transporting to a distillation area, and distilling volatile antimony sulfide and elemental sulfur in the smoke dust into a gas phase by high-temperature inert gas with a certain flow rate; then distilled mixed gas sequentially passes through a first condensing tower and a second condensing tower to be subjected to two-stage condensation, and antimony sulfide and elemental sulfur are separately separated out. The antimony sulfide and the molten salt are returned to the electrolysis process again, and the liquid sulfur is prepared into a high-grade sulfur product by a pelletizer. In addition, inert gas is recycled through the gas pressurizing machine and the heater. The method disclosed by the invention is simple and practical, and good effects can be obtained on purification of the flue gas generated by electrolysis of the antimony sulfide molten salt and preparation of sulfur.

The invention relates to a Cs < + > and Sr < 2 + > co-adsorption-separation difunctional ion exchanger as well as a preparation method and application thereof. The molecular formula of the ion exchanger is K2Sb4S7. 2H2O; in the preparation method, Sb and S elementary substance are reacted by utilizing a eutectic solvothermal technology, and then hydrated K < + > ions are introduced into crystal lattices for activating treatment, so that the K2Sb4S7. 2H2O (K-SbS) ion exchanger which can be produced in batches and has excellent acid-base and irradiation tolerance is prepared; the exchanger respectively shows co-adsorption (pH 4-11) and separation (pH 2-3) functions on Cs < + > and Sr < 2 + > mixed ions under different solution acidity conditions, and the two functions can be repeatedly switched along with the change of pH. The K-SbS ion exchanger disclosed by the invention has the characteristics of large adsorption capacity, fast dynamic response, high separation coefficient and convenience in elution.

The invention relates to the technical field of new-energy electrode material preparation, in particular to an antimony molybdenum sulfide-carbon composite material and a preparation method and application thereof. The preparation method comprises the following steps: 1) preparation of antimony sulfide: dissolving antimony chloride, a chelating agent and a sulfur source in a reaction solution, carrying out uniform mixing through stirring, transferring the obtained mixture to a high-pressure reaction kettle lining, conducting a reaction at a temperature of 160-220 DEG C for 10-16 h, and after the reaction is finished, centrifuging, washing and drying a product to obtain antimony sulfide; and 2) preparation of antimony molybdenum sulfide-carbon: adding the obtained antimony sulfide serving as a precursor, sodium molybdate dehydrate serving as a molybdenum source, a sulfur source and a carbon source into a reaction solution together, conducting uniform stirring, transferring the formed mixture to the high-pressure reaction kettle lining, carrying out reacting at 160-220 DEG C for 10-16 hours, and after the reaction is finished, centrifuging, washing and drying the product, carrying out calcining at high temperature in argon flow, and washing and drying the calcined product. According to the invention, a solvothermal process is adopted to synthesize antimony sulfide, and the antimony-molybdenum sulfide-carbon composite material is synthesized by taking the antimony sulfide as a template through a secondary solvothermal process in combination with a high-temperature calcination method.