344results 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 relates to an Ag quantum dot-SnS2 composite nano gas-sensitive material, a preparation method thereof and application of the Ag quantum dot-SnS2 composite nano gas-sensitive material in a formamide sensor, and belongs to the technical field of semiconductor gas sensors. The micro-morphology of the Ag quantum dot-SnS2 composite nano gas sensitive material is that Ag quantum dots are loaded on the surface of SnS2, the SnS2 is of a flower-shaped structure assembled by SnS2 nanosheets with the thickness of 10-20 nm, and the crystal structure is a hexagonal phase crystal structure; the Ag quantum dots are nano-particles which are composed of Ag atoms and have the diameter of 5-15 nm. The sensor based on the Ag quantum dot-SnS2 nano composite material shows good gas-sensitive performance to formamide at the room temperature of 25 DEG C, has high sensitivity, good reproducibility, selectivity and long-term stability, solves the problem of high working temperature of a traditional metal oxide semiconductor gas sensor, and has good application prospects. The method has important significance in the aspects of industrial production, environment detection and the like.

The invention discloses a bimetallic oxide coated sodium ion layered oxide material and a preparation method thereof in the field of chemical power sources, the chemical expression of the material is NaxNiaMnbMcO2 at bimetallic oxide, and the preparation method comprises the following steps: uniformly mixing a sodium source, a precursor and a transition source, then carrying out primary sintering, cooling and crushing to obtain a primary sintered product; and uniformly mixing the primary sintered product with the bimetallic oxide, and then carrying out secondary sintering, cooling and crushing to obtain the bimetallic oxide coated sodium ion layered oxide material. The preparation method has the beneficial effects that the coating process is simplified, and the preparation method is suitable for large-scale production. The surface of the material is provided with a double-metal oxide coating layer, and the coating layer can effectively improve the conductivity of the material, reduce impedance and restrain the problems of corrosion of electrolyte to the surface of the material, interface side reaction and the like. The cycling stability and the rate capability of the battery can be effectively improved, and meanwhile, the self capacity is not influenced.

To provide a highly dispersible sol containing metal oxide particles and a plurality of polymerizable functional group-containing silanes, and a varnish containing a thermosetting or photocurable resin using the same.　Provided is a metal oxide sol containing a silane compound and metal oxide particles, wherein the silane compound is represented by formula (1): (in formula (1), R1 each independently represent an alkoxy group, an acyloxy group, or a halogen group; R2 each independently are an alkyl group having 1 to 10 carbon atoms or an aryl group having 6 to 30 carbon atoms; R3 is a hydrogen atom or a methyl group; A1 is an alkylene group; A2, A3, and A4 each independently are a methylene group or an oxygen atom; one of A2, A3, and A4 is an oxygen atom; and n is an integer of 1 to 3.). The varnish contains the metal oxide sol and a thermosetting or photocurable resin. The varnish is used for nanoimprinting.

The present invention provides an ion-conducting solid containing an oxide characterized by the general formula Li 6+a-c-2d Y 1-a-b-c-d M1 a M2 b M3 c M4 d B3O9 is represented. (In the formula, M1 represents at least one metallic element selected from a group consisting of Mg, Mn, Zn, Ni, Ca, Sr, and Ba; M2 represents at least one metallic element selected from a group consisting of La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, In, and Fe; M3 represents at least one metallic element selected from a group consisting of Hf, Sn, and Ti; M4 represents at least one metallic element selected from a group consisting of Nb and Ta; and a, b, c, and d represent real numbers, each within certain ranges, while satisfying 0.010 ≤ a + b + c + d < 1.000.)

The present invention discloses a preparation method and application of a graphene-coated tin disulfide nanomaterial, belonging to the technical field of negative electrode materials for lithium-ion batteries. The graphene-coated tin disulfide nanomaterial is prepared by the following method: dispersing graphene oxide in anhydrous ethylenediamine, then adding tin salt and ultrasonically dispersing to obtain a dispersion; adding NaOH solution dropwise to the dispersion, stirring to react, centrifuging, washing, and freeze-drying the reactant to obtain Sn6O4(OH)4 / GO; and calcining Sn6O4(OH)4 / GO and sublimated sulfur at high temperature under an inert atmosphere to obtain SnS2 / RGO. The present invention adopts an efficient and fast preparation method to prepare graphene-coated tin disulfide nanomaterials, and the prepared material particles are evenly distributed and completely coated with graphene, and have excellent rate performance and long cycle performance.

Methods of flash-within-flash (FWF) Joule heating and the systems thereof. The FWF Joule heating process subjects outer feedstock in an outer vessel to a flash Joule heating process, whereby the flash Joule heating process upon the outer feedstock results in the conversion of inner feedstock within an inner vessel (which inner vessel is within the outer vessel) to a converted 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 present disclosure relates to the technical field of sodium-ion batteries. Disclosed are a preparation method for and use of a sodium-ion battery negative electrode material. The method comprises: dropwise adding ammonia liquid into a mixed solution containing a tin salt and a nickel salt, and heating for reaction to obtain NiSn(OH)6 nanospheres; dispersing the NiSn(OH)6 nanospheres in a solvent, adding thioacetamide, and heating for reaction to obtain flower-shaped nanospheres SnS2-NiS; and mixing the flower-shaped nanospheres SnS2-NiS, biochar, and a binder in water, heating for reaction, carrying out solid-liquid separation, drying an obtained solid, and sintering in an inert atmosphere to obtain the sodium-ion battery negative electrode material.

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 method for improving the stability of metal halide perovskite, a material and application, belongs to the technical field of semiconductor photoelectric devices, and mainly relates to a method for improving the stability of the metal halide perovskite by doping methylene diamine cations (CH2 (NH3) 22 + and MDA < 2 + >) at a site A of a halide perovskite lattice and application of the method. The methylenediamine cation realizes substitution doping of halide perovskite by substituting part of monovalent A-site host cations in a perovskite crystal growth process, and becomes a divalent organic cation which has a proper ion size and can be doped into a lattice A site; the high charge number of the material can form stronger electrostatic interaction with halogen anions which are easy to move in perovskite, so that the migration difficulty of the halogen anions is increased. By doping multivalent cations at the position A of a perovskite lattice, perovskite ion migration is inhibited, phase separation is inhibited, and an important thought and method are provided for preparing efficient and stable perovskite photovoltaic devices and laminated solar cells.

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.

The invention discloses a method for recovering tin from tin arsenate slag and an ammonium chlorostannate substance, and the method comprises the following specific steps: firstly, mixing the tin arsenate slag with hydrochloric acid, and heating for acid leaching and dissolving to obtain an acid leaching solution rich in arsenic and tin; then adding a tin precipitator into the arsenic and tin acid leaching solution, and selectively and efficiently precipitating tin to realize separation of arsenic and tin; then, an arsenic reducing agent is added into the tin immersion post-solution, and pentavalent arsenic in the solution is reduced into trivalent arsenic; a vulcanizing agent is added into the reduced liquid, and most arsenic is removed through a vulcanization arsenic precipitation method; and finally, carrying out deep treatment on the arsenic-precipitated liquid. According to the method, efficient separation of arsenic and tin in the tin arsenate slag can be achieved, the direct recovery rate of tin can reach 90% or above, the arsenic content of the obtained ammonium chlorostannate tin deposition slag is lower than 1.0%, meanwhile, effective fixation of arsenic is achieved, and the method is environmentally friendly, easy to operate, low in production cost and capable of being used for industrial production.

Described are luminescent components with excellent performance and stability. The luminescent components comprise a first element 1 including first luminescent crystals 11 from the class of perovskite crystals, embedded a first polymer P1 and a second element 2 comprising a second solid polymer composition, said second polymer composition optionally comprising second luminescent crystals 12 embedded in a second polymer P2. Polymers P1 and P2 differ and are further specified in the claims. Also described are methods for manufacturing such components and devices comprising such components.

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.

The invention discloses a ZnSnO3 / ZnO nanocomposite material and its application in formaldehyde detection. The invention uses zinc acetate dihydrate as a raw material and combines a sol-gel method and a precipitation method to obtain ZnO quantum dots, and then uses zinc acetate dihydrate, tin chloride pentahydrate, potassium hydroxide and sodium fluoride to hydrothermally react and calcine to obtain ZnSnO3 nanopowder, and the ZnO quantum dots are doped and composited to obtain a ZnSnO3 / ZnO nanocomposite material. The ZnSnO3 / ZnO nanocomposite material is made into a gas sensor, and its gas-sensitive performance to formaldehyde gas is detected after high-temperature aging. The invention provides a method for preparing a ZnSnO3 / ZnO nanocomposite material sensor with low preparation cost and simple method. The gas sensor has high sensitivity, selectivity and short response and recovery time to formaldehyde at a low temperature of 70°C, and provides a feasible solution for the development of portable gas sensors.

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 invention discloses a method for preparing indium tin oxide (ITO) powder by using an ITO waste target, and belongs to the technical field of indium tin secondary resource recovery. Placing the ITO waste target powder in a double-temperature-zone tubular roasting furnace for roasting; the double-temperature-zone tubular roasting furnace comprises a first temperature zone and a second temperature zone, reducing gas is introduced into the first temperature zone, the temperature is set to be 875-1000 DEG C, oxidizing gas is introduced into the second temperature zone, and the temperature is set to be 1050-1150 DEG C; the ITO waste target powder is placed in the first temperature zone, and a graphite filter membrane is arranged at a gas outlet of the second temperature zone to collect the ITO powder. According to the method, the ITO waste target material is used as a raw material, the ITO powder product with high additional value is directly obtained through high-temperature roasting, efficient recycling and reutilization of the ITO waste target material are truly achieved, and the composition of the obtained ITO powder meets the standard YS / T 1353-2020.

The invention relates to a preparation method and application of an Rh-SnS / WS2 flower-like heterojunction nano material, and belongs to the field of gas sensing, the Rh-SnS / WS2 flower-like heterojunction nano material is prepared by taking stannic chloride, sodium tungstate, sodium dodecyl benzene sulfonate, thiourea and oxalic acid as raw materials through a one-step hydrothermal method, and finally the SnS / WS2 flower-like heterojunction nano material uniformly modified by noble metal Rh is obtained through an impregnation method. The structure shows that the material is of a two-dimensional sheet-shaped self-assembled nano flower-shaped structure, the preparation process is simple, high-temperature tedious steps are not needed, the prepared Rh-SnS / WS2 flower-shaped heterojunction nano material has rapid response and recovery characteristics to nitrogen dioxide gas, the problems that traditional WS2 is poor in stability and slow in response and recovery time are effectively solved, and the preparation method is suitable for large-scale industrial production. The method has the characteristics of specific selectivity and low-temperature detection.

The present invention discloses a method and device for recycling nitric acid type tin stripping waste liquid, the method comprising: step S1: subjecting the tin stripping waste liquid to electrodialysis treatment to separate the metastannic acid in the tin stripping waste liquid from other ions in the tin stripping waste liquid to obtain a metastannic acid enriched liquid; step S2: adding a strong electrolyte to the metastannic acid enriched liquid to flocculate the metastannic acid; step S3: recovering the metastannic acid obtained by flocculation; step S4: recovering the metals and / or nitrates in the filtrate from step S1 to step S3. In the present invention, the method uses electrodialysis technology to separate metastannic acid from other ions in the waste liquid, and at the same time, under the action of a strong electric field, the metastannic acid colloid migrates toward the electrode direction opposite to its own charge, and moves relative to the liquid phase, so that the metastannic acid is enriched and purified, and then the enriched metastannic acid concentrated solution is collected separately, and a strong electrolyte is added at the same time, so that the metastannic acid is more effectively flocculated, thereby realizing the recovery of the metastannic acid.