188results about "Tin compounds" patented technology

The invention belongs to the technical field of halide solid-state electrolyte, and relates to a high-conductivity and high-lithium-stability modified halide solid-state electrolyte material constructed by solid source plasma, and a preparation method and application of the high-conductivity and high-lithium-stability modified halide solid-state electrolyte material. According to the preparation method, a halide solid electrolyte is taken as a matrix, halogenated ammonium salt is taken as a solid source, and the halide solid electrolyte is subjected to synergistic doping modification of elements such as nitrogen, fluorine / chlorine / bromine and the like by utilizing a plasma technology, so that the modified halide solid electrolyte material is obtained. The modified halide solid electrolyte material shows excellent conductivity and lithium-lithium symmetrical battery performance, and has a wide market application prospect. Meanwhile, the preparation method provided by the invention is simple, rapid, efficient and convenient, is easy to control, and contributes to promoting the development and application of the high-performance halide solid electrolyte material.

The invention aims to provide a method for preparing micron-sized zinc metastannate by wet recovery of tin and zinc in electronic wastes and a synthetic method of 4-hydroxy-1-indanone, and belongs to the technical field of metal recycling. According to the method, amino coordination and carboxylic acid chelation are utilized, tin and zinc in the electronic waste are selectively leached out under the mild acidic condition, impurity metals such as iron and copper are retained in residues due to the difference of complexing constants, and metal ion grade separation (selectivity gt and 99%) is achieved. And then, through evaporation-crystallization regulation and control, the Sn-Zn complex is directionally reconstructed into micron-sized zinc metastannate. In indanone synthesis, micron-sized zinc metastannate forms a local protonic acid environment by adsorbing trace moisture in a reaction system, synchronously activates a C = N bond (Lewis acid site catalysis) of an imine substrate and stabilizes a cyclization transition state (hydrogen bond guiding effect), so that the activation energy of [4 + 1] cycloaddition reaction is reduced, reaction equilibrium is driven to move towards a product end, and the yield of indanone is increased. And quantitative conversion of indanone under mild conditions (the yield is 60%) is realized.

The invention relates to the technical field of luminescent materials, in particular to tungsten-doped double perovskite and a preparation method and application thereof. The first aspect of the invention is to provide tungsten-doped double perovskite, the chemical formula of the tungsten-doped double perovskite is Cs2Sn1-xCl6: xW < 4 + >, and x is greater than or equal to 0.1% and less than or equal to 5%. The invention further provides a preparation method of the tungsten-doped double perovskite, which comprises the following steps: mixing a Cs-containing compound, a Sn-containing compound, a W-containing compound and concentrated hydrochloric acid, heating, cooling, separating, washing and drying to obtain the tungsten-doped double perovskite. The third aspect of the invention is to provide application of the tungsten-doped double perovskite in the fields of near-infrared LEDs, night vision, safety monitoring or nondestructive analysis. The fourth aspect of the invention is to provide an optoelectronic device, and the luminescent material of the optoelectronic device adopts the tungsten-doped double perovskite.

The invention discloses a high-entropy perovskite hydroxide, a preparation method thereof and application of the high-entropy perovskite hydroxide in electro-catalysis of nitrate to synthesize ammonia, and belongs to the technical field of high-entropy perovskite hydroxides. The high-entropy perovskite hydroxide is ASn (OH) 6, and A is one or more of Zn, Mn, Co, Ni and Cu. The high-entropy perovskite hydroxide electrocatalyst which is simple in synthesis method, stable in structure and easy in raw material obtaining is obtained, the electrocatalyst can be applied to electrocatalysis of nitrate to synthesize ammonia, the highest NH3 Faraday efficiency is 98.16%, and the yield is 5.12 mg h <-1 > mgcat <-1 >. And a foundation is laid for developing other high-entropy perovskite compounds as electrocatalysts for electrocatalytic synthesis of nitrate.

This disclosure provides systems and methods for purifying precursor compounds. One method includes one or more of the following steps: mixing a crude product solution with a first solvent, wherein the crude product solution comprises a precursor compound and at least one impurity; wherein the boiling point of the first solvent is higher than the boiling point of the crude product solution; feeding at least the mixture of the crude product solution and the first solvent into an evaporator; and collecting a distillate comprising the precursor compound from the evaporator, wherein the purity of the precursor compound in the distillate is greater than 95%, as determined by [further steps]. 1 Determined by H NMR. Other methods and systems are presented in this paper.

Provided is a substance as a high-purity tin compound which can maintain high purity over a long period of time, particularly can suppress decomposition of a triaminotin compound, and can maintain the high purity of the triaminotin compound. A tin compound containing 95 mol% or more of a triaminotin compound represented by general formula (1) in terms of tin atoms and 0.001-0.5 mol% of a tetraaminotin compound represented by general formula (2) in terms of tin atoms. RSn (NR '2) 3 (1) Sn (NR' 2) 4 (2) (In general formula (1) and general formula (2), R is a hydrocarbon group having 1-30 carbon atoms which may be substituted by halogen, oxygen atoms, and nitrogen atoms, and R'may be the same or different and are a hydrocarbon group having 1-10 carbon atoms, where two R 'on the same nitrogen atom may bond to each other to form a 3-7 membered ring including nitrogen).

The application belongs to the technical field of electrochemical energy storage materials, and discloses application of a sulfide-based hollow nanobrick heterojunction anode coating material and a preparation method thereof, in particular, application of the sulfide-based hollow nanobrick heterojunction anode coating material to an aqueous zinc ion battery, wherein the sulfide-based hollow nanobrick heterojunction comprises an X metal sulfide and a Y metal sulfide, and the heterojunction is represented as XS-YS n , 0 < n < 3, X is Zn, and Y is selected from one of Sn, Co, Cu or Mo; the preparation method comprises the following steps: mixing a zinc salt and a fluoride etchant, and one of a tin salt, a cobalt salt, a copper salt or a molybdenum salt, and then performing a hydrothermal reaction to obtain a bimetal-based hollow nanobrick precursor; and then performing sulfurization calcination to obtain the XS-YS n . The sulfide-based hollow nanobrick heterojunction can effectively inhibit zinc dendrite growth and interface side reactions, thereby significantly improving the electrochemical stability of the material, and further prolonging the cycle life of the aqueous zinc ion battery.

[Problem] To provide: a dispersion liquid of SnS particles which has good dispersibility and does not precipitate during storage; a method for producing the dispersion liquid; and a method for producing SnS particles. [Solution] A SnS dispersion in which SnS particles are dispersed in an aqueous or alcohol-based dispersion, said SnS dispersion being characterized in that the average major diameter of the dispersed SnS particles is 100-2000 nm, the average minor diameter of the SnS particles is 50-1000 nm, and the average aspect ratio (major diameter / minor diameter) is 1.2-1.6; also provided is a method for producing a SnS dispersion liquid, which comprises: a vapor deposition step for heating a SnS raw material contained in an evaporation source container and collecting SnS in a collection container; a separation step for separating the obtained vapor deposition product from the collection container to obtain SnS particles; and a dispersion step in which the vapor deposition product obtained in the separation step is dispersed in an aqueous dispersion. In the vapor deposition step, the heating temperature of the evaporation source container is 700-900 DEG C, and the maximum collection container temperature of the collection container is 80-130 DEG C.

The invention discloses an amorphous copper-tin oxide nanometer material and a preparation method and application thereof, and belongs to the technical field of CO2 efficient conversion. Stannate ions and copper ions are compounded to obtain the amorphous copper-tin oxide nanometer material. The amorphous copper-tin oxide nano material has a large number of defect structures and surface atoms with unsaturated coordination, so that the amorphous copper-tin oxide nano material can provide abundant catalytic reaction active sites when being used as a catalyst. In addition, due to introduction of the copper element, the conductivity of the copper-tin oxide nano material is improved, H2O molecule dissociation is promoted, protons are provided for reduction of CO2, the adsorption and activation capacity of CO2 molecules and the activation capacity of H2O molecules are enhanced, and the conductivity of the copper-tin oxide nano material is improved. Therefore, the technical problems of low CO2 electrocatalytic reduction (CO2RR) activity and low formic acid Faraday efficiency of a tin-based catalyst are effectively solved.

The invention relates to a method for synchronously preparing metastannic acid through ultrasonic enhancement and hydrolysis of low-concentration nitric acid, and belongs to the technical field of metastannic acid preparation. The preparation method comprises the following steps: slowly adding high-purity tin sheets into a dilute nitric acid solution in batches under the stirring condition at the temperature of 35-60 DEG C, and uniformly mixing to obtain a mixed system; and at the temperature of 35-60 DEG C, ultrasonic waves are applied to the mixed system for an ultrasonic enhanced oxidation dissolution-hydrolysis reaction for 30-50 min, so that tin sheets are oxidized and dissolved and are synchronously hydrated to generate metastannic acid precipitates, solid-liquid separation is carried out, solids are sequentially washed and dried, and a high-purity metastannic acid product is obtained. A passivation layer on the surface of the tin sheet is destroyed by utilizing the mechanical effect of ultrasound, and mass transfer is accelerated; the ultrasonic cavitation effect is used for promoting particle refinement and gel network depolymerization, and tin ion hydrolysis is promoted. The method is carried out at normal pressure, low acidity and low temperature, no nitrogen oxide brown smoke is generated in the whole reaction process, the metastannic acid yield is larger than or equal to 95%, and the method has the advantages of being mild in reaction, environmentally friendly, high in efficiency and good in product purity.

The present invention improves ion conductivity while improving water resistance. Provided is a solid electrolyte having a composition formula represented by LixMXy, wherein M is one or more elements selected from group 14 elements, X includes S, and the compositional ratio of Li, M, and X is x:1:y. The crystal structure of the solid electrolyte is hexagonal, and the volume of a hexagonal unit cell is greater than 0.0870 nm3 but less than 0.0880 nm3.

The present invention discloses a method for the simultaneous detoxification of organotin waste and the preparation of sodium stannate. The method comprises mixing the organotin waste with a composite additive comprising sodium oxalate and hydrogen peroxide as active ingredients, followed by spray combustion. The combustion exhaust is subjected to dust removal to recover a tin-rich material, which is then water-leached to obtain a sodium stannate solution. By adding sodium oxalate and hydrogen peroxide during the combustion and decomposition of the organotin waste, the method not only enhances the thermal conversion process of the organotin compound, converting its toxic organic functional groups into harmless CO2 and H2O emissions, but also promotes dioxin decomposition, sulfur fixation, and suppresses NOx generation. Furthermore, the method efficiently converts tin into sodium stannate, which is easily recovered by water leaching. The method is simple to operate, highly efficient, and environmentally friendly.

This invention discloses a method for preparing hollow metal sulfides based on a mild template method using calcium carbonate. Calcium chloride powder and potassium carbonate powder are uniformly dispersed separately in an alcohol solution. The two solutions are then mixed and allowed to stand for aging to obtain solution A. Simultaneously, thioacetamide is dissolved in the alcohol solution to obtain solution B, and a chloride is dissolved in the alcohol solution to obtain solution C. The chloride is either stannous chloride or copper chloride. Then, solutions B and C are added sequentially to solution A at a molar ratio of thioacetamide to chloride of 2:1 and mixed uniformly to obtain solution D. Solution D is then placed in a polytetrafluoroethylene (PTFE) reactor and reacted at 140–180°C for 12 hours. Carbon dioxide is then continuously bubbled through the reactor for 2–3 hours. The mixture is filtered and washed with water and ethanol to obtain the hollow metal sulfides. This invention can obtain hollow metal sulfides with different morphologies and avoids the contamination problems associated with high-temperature calcination or acid dissolution for template removal.

The present invention belongs to the field of the development of new adsorbents and comprehensive utilization of resources, and discloses a preparation method of an inorganic tin sulfide adsorbent and its application in cesium extraction. The adsorbent is synthesized by a hydrothermal method and has a lamellar structure. It has excellent ion exchange performance for alkali metal cesium ions in an aqueous solution and exhibits excellent adsorption selectivity. The adsorbed material can be regenerated, thus realizing the recycling of the adsorption material. The preparation process of the adsorption material provided by the present invention is simple and low in cost. Therefore, the adsorption material prepared by the present invention can be used for the extraction of cesium in geothermal water, salt lake brine, and underground brine, and can also be applied to the separation and extraction of cesium in solid cesium ore or associated ore leaching solutions.

The application provides a Zn-doped Cu2SnS3 sodium ion battery negative electrode material and a preparation method thereof. Specifically, a precursor solution is transferred into a 50 mL polytetrafluoroethylene reaction kettle, and the temperature is kept at 200 DEG C for 36 hours, so that Zn-doped Cu2SnS3 particles with good crystallinity and uniform micron flower ball micro-morphology are obtained.

The present application relates to a kind of ultrasonic reinforced sodium stannate preparation method of tin oxide sheet low temperature, belong to sodium stannate preparation technical field.The present application will high-purity tin sheet be added to sodium hydroxide solution, under the condition of ultrasonic wave, control sodium hydroxide solution temperature is 20~30 ℃, slowly add hydrogen peroxide to 20~30% of preset total addition amount after continuing ultrasonic reinforced oxidation reaction 7~10min;Again, slowly add hydrogen peroxide after multiple times, continue ultrasonic reinforced oxidation reaction, the addition amount of hydrogen peroxide is 10~15% of preset total addition amount each time, ultrasonic reinforced oxidation reaction 4~8min after each hydrogen peroxide is added;Hydrogen peroxide is completely added according to preset total addition amount, continue ultrasonic reinforced oxidation reaction until tin sheet completely dissolves and obtains sodium stannate solution;Sodium stannate solution is filtered, concentrated, separated, washed, dried in turn and obtains sodium stannate product.The present application strictly controls oxidation reaction temperature to 20~30 ℃, reduces hydrogen peroxide volatilization, uses ultrasonic to reinforce hydrogen peroxide oxidation effect, improves tin dissolution effect.

To provide an aqueous solution for solution processing for forming a conductive oxide thin film having high density, high optical transmittance, low surface roughness, and good electronic properties, as well as the formed thin film and a method for forming the thin film.SOLUTION: A precursor solution for producing a conductive oxide thin film is prepared from metal salts comprising indium, tin, titanium, and cadmium salts, and numerous combinations thereof. These salts have purity levels of at least 99% to at least 99.999%. These salts may be metal nitrates, or they may be metal halides such as chlorides. The solution is aqueous. The solution may be an aqueous solution comprising In(NO3)3, and at least one of SnCl2 and SnF2. The solution may be an aqueous solution comprising In(NO3)3 and TiCl3. The solution may be an aqueous solution comprising Cd(NO3)2, and at least one of SnCl2 and SnF2.SELECTED DRAWING: Figure 1

The present application provides a thermoelectric material and a preparation method therefor. The preparation method for a thermoelectric material comprises: subjecting powder comprising an M element, an A element, and an L element to flash hot-press sintering treatment to obtain the thermoelectric material. M is a group IB element, A is a group IVA element, and L is a group VIA element, and the difference between the highest melting point element and the lowest melting point element among the M element, the A element, and the L element is ≥700°C. The preparation method can prepare a thermoelectric material having fewer defects, a high Seebeck coefficient, and a high thermoelectric figure of merit. The preparation method is simple, has a short preparation cycle, and is suitable for wide application.

Acidified metal oxides combined with non-acidified metal oxides used as a battery electrode active material.

To provide a semiconductor device that can be mass-produced with high reliability using a material suitable for semiconductor applications such as transistors and diodes, and a large substrate such as mother glass, a semiconductor device that has a transistor with a good electronic state at the interface between an oxide semiconductor film and a gate insulating film in contact with the oxide semiconductor film, and a highly reliable semiconductor device that is imparted with stable electrical characteristics to a transistor that uses an oxide semiconductor film as a channel.SOLUTION: A semiconductor device uses an oxide material containing crystals that are c-axis oriented and have a triangular or hexagonal atomic arrangement when viewed from the ab-plane, surface, or interface direction, and that are rotated around the c-axis.SELECTED DRAWING: Figure 1

This invention discloses a SnS / WS2@C composite electrode material, its preparation method, and its application, belonging to the field of tungsten disulfide nanomaterials technology. A precursor solution A is obtained by uniformly dispersing SnCl2·2H2O and CH3CSNH2 in anhydrous ethanol. After a solvothermal reaction, precursor solution A is cooled, centrifuged, washed, and freeze-dried to obtain powder B. Powder B, WCl6, and CH3CSNH2 are uniformly dispersed in anhydrous ethanol to obtain solution C. After a solvothermal reaction, solution C is cooled, centrifuged, washed, and freeze-dried to obtain powder D. Powder D is uniformly dispersed with glucose in deionized water to obtain precursor solution E. After a solvothermal reaction, precursor solution E is cooled, centrifuged, washed, and freeze-dried to obtain powder F. Powder F is calcined at high temperature to obtain the SnS / WS2@C composite electrode material. Performance testing of the prepared SnS / WS2@C composite electrode material revealed that it exhibits good electrochemical performance when used as a negative electrode in potassium-ion batteries.

Lithium-containing thiostannate spinel compounds having the formula Li2M1+xSn3−xS8, where x is 0 or 1 and M is Mg, Fe, Mn, Ni, Ga, In, or a combination thereof; or the formula Li1.66CuSn3.33S8 are provided. Methods and devices for detecting incident neutrons and alpha-particles using the compounds are also provided. For thermal neutron detection applications, the compounds can be enriched with lithium-6 isotope (6Li) to enhance their neutron detecting capabilities.

The invention relates to a preparation method of a lithium ion battery SnS / C-coated GO composite negative electrode material, which comprises the following steps: 1) mixing SnCl2. 2H2O, thiourea and a cationic surfactant, and stirring at a constant temperature of 50-80 DEG C; 2) mixing the solution with porous carbon, and performing ultrasonic mixing and restirring to obtain a solution A; 3) placing the solution A in a reaction kettle, standing at 150-200 DEG C, washing and drying; 4) dissolving graphene oxide in ethylene glycol, and performing ultrasonic dispersion to obtain a solution B; 5) adding the SnS / C-X precursor into ethylene glycol, and performing stirring and ultrasonic treatment to obtain a solution C; 6) adding the solution C into the solution B, stirring at constant temperature, performing ultrasonic treatment, performing hydrothermal treatment at 140-180 DEG C, washing and drying; heating to 500-700 DEG C, and keeping the temperature; and washing in alcohol and deionized water, carrying out suction filtration, and drying. The method has the advantage that the cycle performance and the rate capability of the material are improved.

The invention discloses a method for pyrolyzing organotin waste at low temperature and simultaneously preparing stannous sulfate, belonging to the technical field of organotin waste treatment. The method is to place the organotin waste in a tube roasting furnace, pyrolyze it under an oxidation atmosphere with an O2 volume concentration of 15-25% and a temperature of 400-600 °C. The solid product obtained by pyrolysis is leached with sulfuric acid, and the obtained leaching solution is subjected to impurity removal and concentrated crystallization to obtain a stannous sulfate product. This method uses organotin waste as a raw material to prepare a high-purity stannous sulfate product with high added value, realizing the resource utilization of hazardous waste, reducing the treatment cost while improving the recycling efficiency of tin resources, and providing a new way for the green and harmless disposal and efficient recovery of organotin waste.

The invention discloses a hydrophilic perovskite material and a preparation method and application thereof. The chemical formula of the hydrophilic perovskite material is AxByXz, A-site elements and B-site elements comprise K, Na, Mg, Ca, Sr, Ba, Bi, Sn, Pb, Zn, Ti, V, Cr, Mn, Fe, Co, Ni, Cu and the like, and X comprises O or OH; the surface of the hydrophilic perovskite material has hydrophilic functional groups. The invention also discloses a hydrophilic perovskite material carbon composite material, which comprises a hydrophilic perovskite material and a carbon matrix material. The invention also discloses a hydrophilic perovskite coating formed by the hydrophilic perovskite material or the hydrophilic perovskite material carbon composite material. The hydrophilic perovskite coating has a dynamic regulation effect on the surface of the zinc negative electrode, so that the ion flux is homogenized, the uniform deposition of Zn < 2 + > ions is promoted, the appearance and growth of zinc dendrites are effectively inhibited, and the cycle performance of the battery is improved.

The invention belongs to the technical field of heterostructure construction, and particularly relates to a SnS2 / CsPbBr3 heterojunction as well as a preparation method and application thereof. The preparation method of the SnS2 / CsPbBr3 heterojunction comprises the following steps: taking a hexagonal 2D SnS2 nanosheet synthesized by a hydrothermal method as a growth template, combining with a 3D CsPbBr3 nanocube synthesized by a solution method, and successfully constructing the 2D / 3D SnS2 / CsPbBr3 heterojunction through an electrostatic self-assembly technology. The invention innovatively provides a heterojunction preparation strategy aiming at the problems of serious interface charge recombination, low photoresponse efficiency and the like of a metal halide perovskite material. Through an electrostatic self-assembly technology, a 2D / 3D SnS2 / CsPbBr3 heterojunction system is successfully constructed, and the problems of serious interface recombination, low light response rate and the like of metal halide perovskite in photoelectric application are successfully broken through.

The present invention provides a highly selective NO2 gas sensor based on visible light modulation of an Au / SnS2 nanocomposite material and a preparation method thereof. The Au / SnS2 nanocomposite material with a heterogeneous structure is used as a sensitive material and is drop-coated on an interdigitated electrode to form a sensitive layer to prepare the gas sensor. A light source is arranged above the gas sensor to emit light of a 420nm wavelength to the gas sensor. External light field modulation enhances the sensor's response to NO2 and suppresses the sensor's response to interfering gases such as NH3, thereby achieving enhanced selectivity of the Au / SnS2 gas sensor.

The invention provides an ITO waste target recovery method. The ITO waste target recovery method comprises the following steps: mixing an ITO waste target, sulfur and graphite to obtain a mixture; placing the mixture in an inert environment, heating the mixture to 300-430 DEG C, and carrying out a vulcanization reaction to obtain an intermediate after the reaction is finished; heating the intermediate to 1100-1200 DEG C under a first pressure, and obtaining a mixed gas containing indium sulfide and tin sulfide after the reaction is finished; under second pressure intensity, placing the mixed gas containing indium sulfide and tin sulfide at the temperature of 800-850 DEG C, and respectively obtaining condensed indium sulfide and gas containing tin sulfide after the reaction is finished; and placing the gas containing tin sulfide at a temperature of 550-650 DEG C under a third pressure intensity, and obtaining condensed tin sulfide after the reaction is finished. The method provided by the invention is environment-friendly, and the ITO waste target can be recycled to prepare the high-purity indium sulfide.

The present application relates to the field of microcrystalline materials, and in particular to a perovskite-based microcrystalline material, its preparation process and application. The preparation process of the perovskite-based microcrystalline material specifically includes the following steps: S1: preparation of site material solution; S2: addition of framework particle raw materials; S3: preliminary synthesis of microcrystalline material; S4: preparation of composite microcrystalline material. The perovskite-based microcrystalline material prepared in the present application can effectively overcome the internal defects in the material, thereby avoiding the loss of photoelectric performance, and can ensure that the perovskite material has excellent stability under long-term illumination, high temperature and humidity environment, and still maintains good self-properties in high humidity environment, avoiding decomposition, and thus has very excellent application value.