17results about "Tin oxides" patented technology

An aqueous zinc-ion electro-chemical cell may include an anode. The anode may include an electrode and an interphase layer disposed on the electrode. The interphase layer may include a non-stoichiometric tin oxide (SnOx) where 1 < x <= 1.2. The interphase layer may guide Zn²⁺ ions to plate beneath the interphase layer along the Zn (101) crystallographic orientation.

This invention discloses a method for preparing tin dioxide hydrated colloidal precursors via dual-anode synchronous electrolysis, belonging to the field of electrochemical preparation technology of inorganic functional materials. The method includes the following steps: a) preparing an electrolyte containing 0.01 M hydrochloric acid and adjusting the initial pH value; b) using a high-purity tin plate as anode 1 and a titanium-based size-stabilized electrode as anode 2; using the titanium-based size-stabilized electrode as a common cathode; c) applying a DC voltage for constant-voltage synchronous electrolysis; anode 1 dissolves to generate stannous ions, anode 2 electrolyzes chloride ions to generate hypochlorous acid, and the hypochlorous acid instantly oxidizes the stannous ions to tetravalent tin ions in the bulk solution far from the cathode, forming a translucent tin dioxide hydrated colloidal precursor in situ in an acidic medium; d) drying the resulting colloid under reduced pressure and then calcining it at 200–250℃ to obtain high-purity nano-tin dioxide. This invention achieves integrated "dissolution-oxidation-gelation" through dual-anode synergy, avoiding the loss of hypochlorous acid during cathode reduction.

This application discloses a composite material, its preparation method, a light-emitting device, and a display device. The composite material has a core-shell structure, wherein the core of the composite material comprises metal oxide nanoparticles, and the shell of the composite material comprises Zn. z M x (PO4) y Where M is selected from H or one or more metallic elements, 0≤x / z≤0.5, 3y=2z+ax, a is the valence of M, x, y, z are integers or decimals, and the Zn z M x (PO4) y It is an amorphous material. In the technical solution proposed in this application, a zinc phosphate-based amorphous material shell is coated on the surface of the metal oxide, which can passivate surface defects of the metal oxide.

This invention relates to the field of pigment preparation, specifically to a method for preparing highly conductive titanium dioxide using the chloride process. The method includes: reacting oxygen and titanium tetrachloride with an oxidation reaction to generate titanium dioxide particles, which are then introduced into a cooling conduit. A preheated coating agent is added for a coating reaction and slurry preparation. The slurry temperature is adjusted to 60-75°C and the pH to 2-3, and a phosphate-containing compound is added. The slurry temperature is adjusted to 80-90°C, and a sodium aluminate solution and an alkaline solution are added to adjust the pH of the slurry to 9.5-10.5, followed by a first homogenization treatment. A tin chloride solution and a sodium aluminate solution are added, and the pH of the slurry is adjusted to 7.5-8.5, followed by a second homogenization treatment. The pH of the slurry is adjusted to 4.5-5.5, followed by a third homogenization treatment. The pH of the slurry is adjusted to 5.5-6.5, followed by a fourth homogenization treatment. This method is low-cost, simple, and suitable for large-scale production, producing conductive titanium dioxide with excellent performance.

The present application relates to a kind of bismuth modified wrinkle two-dimensional tin oxide composite material and its preparation method and application, the preparation method includes the following steps: (1) tin powder and bismuth powder are mixed, by first heat treatment, obtain alloy powder;(2) the alloy powder obtained in step (1) and first solvent are mixed, inert gas is introduced into the reaction system, by second heat treatment, obtain liquid metal;(3) the liquid metal obtained in step (2) and second solvent are mixed, oxygen is introduced into the reaction system, by third heat treatment, obtain precipitate;(4) the precipitate obtained in step (3) and third solution are mixed, after centrifugation, take supernatant and drop to heat shrinkage piece, by fourth heat treatment, obtain the bismuth modified wrinkle two-dimensional tin oxide composite material.The present application utilizes the characteristics of heat shrinkage piece heating and shrinkage to make two-dimensional material produce wrinkle morphology, and wrinkle morphology has positive influence on the catalytic performance of tin oxide composite material electrocatalytic reduction CO2.

The application discloses a method for preparing nano tin dioxide based on a citric acid-oxalic acid complex compound precipitation method, and dissolves tin tetrachloride pentahydrate in deionized water to obtain solution A by stirring; dissolves citric acid and oxalic acid in deionized water to obtain solution B by stirring, then drops solution B into solution A to form a stable tin-acid complex compound precursor solution; then, ammonia water is added dropwise to adjust the pH value of the solution to 8-11 to generate white precipitate; the precipitate is aged, then solid-liquid separation is carried out, the filter cake is washed until there is no chlorine ion in the filtrate by testing with silver nitrate solution; the washed precipitate is dried and calcined to obtain nano tin dioxide powder. The method is simple, low in cost and easy to be industrialized, the prepared nano tin dioxide powder is uniform in particle size distribution and good in dispersity, and has a wide application prospect in the fields of gas sensitive sensors, lithium ion batteries and catalysis.

This invention provides a one-pot hydrothermal preparation method for bismuth oxychloride-tin dioxide nanocomposites: Sodium bismuthate and stannous chloride are dispersed in deionized water to obtain a solid-liquid mixture; the solid-liquid mixture is placed under hydrothermal conditions for a hydrothermal reaction. In the same hydrothermal system, sodium bismuthate and stannous chloride undergo a redox reaction to generate BiOCl, simultaneously producing tetravalent tin ions and hydroxide ions; the tetravalent tin ions and hydroxide ions undergo in-situ precipitation and are loaded onto the BiOCl surface, which is then converted into SnO2 crystals via hydrothermal crystallization, ultimately yielding the BiOCl-SnO2 nanocomposites in one step. This invention, based on the synergistic effect of redox reaction, precipitation reaction, and hydrothermal crystallization reaction, synthesizes BiOCl-SnO2 nanocomposites in a single reaction system in one step, without the need for the addition of alkali and template agents. The process is simple, compatible with various conditions, produces high-purity products, and is environmentally friendly, making it suitable for industrial production.

The present invention provides certain fluorinated alkyltin compounds believed to be useful for the vapor phase deposition of tin-containing films on the surface of a microelectronic device substrate. Also provided are methods for preparing precursor compounds and methods for using such compounds in depositing tin-containing films on a microelectronic device substrate.

The present disclosure relates to the technical field of non-ferrous smelting, and particularly relates to a method for preparing ITO target precursor by using vanadium-titanium magnetite blast furnace gas mud, comprising the following steps: vanadium-titanium magnetite blast furnace gas mud is modulated into ore slurry, the ore slurry is subjected to cyclone classification to obtain overflow material and tailings; the overflow material is dried to obtain indium-rich material; vacuum smelting is performed on the indium-rich material after adding coal powder to obtain fume dust and iron-rich slag; the fume dust is subjected to acid leaching by using indium-tin-containing waste acid to obtain leaching solution; the leaching solution is subjected to primary centrifugal extraction to obtain extraction organic phase; the extraction organic phase is subjected to primary back extraction to obtain back extraction solution; the back extraction solution is subjected to secondary centrifugal extraction to obtain organic phase and aqueous phase; the aqueous phase is subjected to acid treatment, and then is subjected to suction filtration and drying to obtain tin oxide solid; the organic phase is subjected to secondary back extraction, and then is subjected to vacuum flash evaporation and drying to obtain indium oxide solid. The present disclosure realizes efficient extraction of indium and tin by using vanadium-titanium magnetite blast furnace gas mud and indium-tin-containing waste acid.

This invention discloses a low-temperature preparation method for conductive rutile titanium dioxide based on a pre-crystallized intermediate, belonging to the field of advanced functional powder material preparation technology. The method includes the following steps: S1, hydrothermal pre-crystallization to prepare an active intermediate; S11, slurry preparation and accelerator addition; S12, hydrothermal crystallization reaction; S13, washing and drying; S2, controlled co-precipitation loading of a tin-antimony conductive layer; S21, matrix redispersion; S22, precursor solution preparation; S23, co-current co-precipitation reaction; S24, aging and post-treatment; S3, low-temperature simultaneous calcination; S31, calcination procedure; S32, simultaneous conversion mechanism; S321, matrix crystal transformation; S322, conductive layer crystallization; S33, post-calcination treatment. Through a single low-temperature calcination step, the rutile phase crystal transformation of the titanium dioxide matrix and the crystallization of the antimony-doped tin dioxide conductive layer on the surface can be completed simultaneously, greatly reducing energy consumption and production cycle.

The application discloses a kind of porous material based on tin mud and preparation method thereof, its preparation method includes: after tin mud pickling, washing, drying, roasting ball milling, obtain the tin mud after processing;The tin mud after processing, carbon thermal reduction agent, template and deionized water are mixed, to obtain suspension;Suspension is steamed dry in stirring, after drying, heat treatment is carried out, to obtain crude porous material;Crude porous material is purified, to obtain the porous material based on tin mud of the present application.A series of pretreatment is carried out to the tin mud of electroplating tin waste, and a material with high purity containing SnO2 is obtained, and the material is made into a material with a porous structure as a base material, realizing the secondary use of tin resources, and the porous material has stable charge and discharge performance and rate performance, and can be applied to the field of lithium / sodium ion battery negative materials.The application has short production cycle, high added value, and wide application prospect.

The present disclosure provides a method for selectively extracting and recovering tin from tin-containing residue, the method comprising: ball milling the tin-containing residue, drying I, to obtain pretreated tin-containing residue; slurryizing the pretreated tin-containing residue with water to obtain slurryized tin-containing residue; mixing the slurryized tin-containing residue with a leaching agent solution, leaching, to obtain a tin-containing leaching solution and a leaching residue; dropping a solution containing a sulfidizing agent into the tin-containing leaching solution, precipitating, to obtain a purified solution and a purified residue; adding a sulfuric acid solution to the purified solution, reacting, to obtain a stannic acid precipitate and a mother liquor containing a complexing agent; washing the stannic acid precipitate, and then drying II, calcining the stannic acid precipitate, to obtain tin dioxide. In the method of the present disclosure, the tin leaching rate is greater than or equal to 95%, the complexing agent can be recycled, no high-salinity wastewater is generated, the process is short, the operation is simple, the cost is low, and the method is suitable for efficient recovery of tin from high-impurity and low-grade tin-containing residue.

This invention provides a tin-containing clean water recovery system, belonging to the field of water recycling technology. It includes a collection unit, a concentration unit, a filter press recovery unit, and a control system. The collection unit includes a storage tank for collecting tin-containing clean water wash water. The concentration unit includes a unit membrane filtration device, whose inlet is connected to the outlet of the storage tank. The membrane module is made of polyamide composite material and has a polysulfone or polyethersulfone support layer and an interfacial polymerized polyamide functional separation layer. The membrane filtration device is connected to a cross-flow circulation loop. The filter press recovery unit includes a filter press device, whose inlet is connected to the concentrate outlet of the membrane filtration device. The control system is electrically connected to each transfer pump, circulation pump, and filter press pump. This invention uses a purely physical membrane separation process to concentrate, enrich, and recover low-concentration tin-containing clean water wash water via filter press filtration. No chemical reagents are required, resulting in a high tin recovery rate, low tin content in the effluent, and high metallic tin content in the produced tin sludge, achieving efficient tin resource recovery and wastewater reduction.

The application discloses a low-noble metal long-service-life DSA anode and a preparation method thereof, and belongs to the technical field of electrochemical catalytic electrode materials. The DSA anode comprises a titanium base and a composite coating formed on the surface of the titanium base, and the composite coating comprises an intermediate layer coating and an active layer coating. The intermediate layer coating is a composite oxide coating containing Ir oxide, Sn oxide and Sb oxide, and the active layer coating is a composite oxide coating containing Ru oxide, Sn oxide and Sb oxide. The loading of noble metal Ir is 0.21-0.30 g / m 2 , and the loading of noble metal Ru is 0.32 g / m 2 . Through the design of the above-mentioned composite coating structure, the electrode can significantly improve the stability and service life of the electrode under the condition of oxygen evolution while maintaining high oxygen evolution catalytic activity, wherein the highest accelerated service life of the electrode calculated according to unit loading can reach 712.46 h·m 2 / g, and the electrode is helpful to reduce the cell voltage, reduce the electrolysis energy consumption and operation cost. In addition, the structure can also improve the utilization efficiency of noble metal and reduce the preparation cost of the electrode.

The application relates to the field of methane oxidation coupling technology, and discloses a SnO2 material with a porous structure and a preparation method and application thereof. The preparation method comprises the following steps: mixing a tin source and alcohol, and then calcining the mixed product at 300-700 DEG C. The method for preparing C2 hydrocarbon by methane oxidation coupling comprises the following steps: under the methane oxidation coupling reaction condition, raw material gas is contacted with the SnO2 material with a porous structure in the second aspect. When the SnO2 material with a porous structure prepared by the application is used as a catalyst for the reaction of preparing C2 hydrocarbon by methane oxidation coupling, the conversion rate of methane is above 28%.

This invention relates to composite materials formed from ZnSnO3 and SnO2, specifically to ZnSnO3 / SnO2 microtube materials, their preparation methods, and applications. The method involves pretreating waste poplar catkins, followed by readily and fully adsorbing them with a metal salt to obtain a Zn / Sn poplar catkin precursor; calcining and cooling this precursor yields the ZnSnO3 / SnO2 microtube material. This preparation method is simple, uses low-cost raw materials, and is environmentally friendly, achieving the resource utilization of waste poplar catkins. Sensors based on this composite material exhibit high sensitivity, low detection limit, high selectivity, and excellent long-term stability for gases such as triethylamine. Furthermore, this composite material can be widely applied in various fields such as gas sensing, photocatalysis, and energy storage, showing promising industrialization prospects.