25 results about "SULFIDE ION" patented technology

A method of manufacturing a free-standing, sheet-type solid-state electrolyte is provided. The method includes: mixing a sulfide ion conductor-containing material and a non-polar or low-polar binder in a solvent to obtain a slurry composition; disposing the slurry composition onto a planar substrate; spreading the slurry composition on the substrate to obtain a film; calendering the film to densify the film; and subsequently drying the film under vacuum. The binder may be polyisobutylene and may be present in the slurry composition in an amount of up to 10 wt. %, optionally between 1 and 5 wt. %. The sulfide ion conductor-containing material may be a lithium argyrodite having the chemical formula Li6PS5X in which X is Cl, Br, or I. The solvent may be toluene or xylene. The film may have a thickness of between 10 and 200 μm.

The invention provides a rare earth assisted Fe-MnNi supported desulfurization catalyst, and a preparation method and application thereof, and relates to the technical field of environment-friendly materials and catalysis. The method comprises the steps of foam iron pretreatment, metal salt solution preparation, precipitation loading, additive adding, aging drying, roasting and the like. When the catalyst is used for treating the sulfur-containing wastewater, the catalyst is added into the sulfur-containing wastewater, and oxygen-containing gas is introduced through an aeration device. The catalyst provided by the invention has high activity, high stability and strong anti-poisoning ability, can efficiently remove sulfur ions, sulfite radicals and the like, remarkably improves the desulfurization rate, breaks through the limitation of a traditional treatment method, and is widely applicable to sulfur-containing wastewater treatment in the industries of chemical engineering, electroplating, leather and the like.

A quantum dots light emitting diode is provided. The quantum dots light emitting diode includes a first electrode layer; an electron transport layer on the first electrode layer; and a quantum dots layer on a side of the electron transport layer away from the first electrode layer. The electron transport layer includes a gradient alloy composite sub-layer including an electron transport oxide material and an electron transport non-oxide chalcogen-containing material. The non-oxide chalcogen is selected from a group consisting of sulfide ion, selenium ion, and tellurium ion. The electron transport non-oxide chalcogen-containing material has a gradient distribution such that a content of the electron transport non-oxide chalcogen-containing material decreases along a direction from the quantum dots layer to the first electrode layer.

The invention relates to the technical field of nano material preparation and application, in particular to a transition metal selenide catalyst and a preparation method and application thereof.The preparation method comprises the steps that firstly, metal nickel salt, ferric salt, urea and ammonium fluoride are dissolved in deionized water, and a nickel-iron layered hydroxide nanosheet precursor is synthesized through a hydrothermal method; secondly, preparing an iron-doped nickel selenide catalyst by adopting a selenylation reaction; the electronic structure of nickel selenide is regulated and controlled by utilizing an iron doping strategy, and the catalytic performance is improved. The prepared iron-doped nickel selenide catalyst has good catalytic activity when being used for hydrogen evolution reaction and sulfur ion oxidation reaction. In a two-electrode sulfur ion oxidation coupling hydrogen production electrolytic tank, the current density of 10mAcm <-2 > can be output only by the voltage of 0.439 V, and the targets of efficient and energy-saving hydrogen production and sulfur ion oxidation upgrading into a high-added-value elemental sulfur product are achieved. The method has the advantages of simple and controllable preparation process, low raw material price, easiness in batch production and the like, and can be used as a catalyst for efficient water electrolysis hydrogen production and sulfur ion oxidation reaction.

This invention discloses a transition metal phosphide catalyst, its preparation method, and its application, belonging to the field of electrocatalysis technology. The process includes: firstly, dissolving nickel salt, lanthanum salt, urea, and ammonium fluoride in deionized water to synthesize a nickel-lanthanum layered hydroxide nanosheet precursor via a hydrothermal method; secondly, preparing a lanthanum-doped nickel phosphide catalyst using a phosphating reaction; and thirdly, utilizing a lanthanum doping strategy to modulate the electronic structure of nickel phosphide and improve its electrocatalytic reaction performance. This lanthanum-doped nickel phosphide material exhibits good catalytic activity when used to catalyze hydrogen evolution and sulfide ion oxidation reactions. In an integrated two-electrode electrolyzer for sulfide ion oxidation-assisted hydrogen production, it outputs 10 mA cm⁻¹. ‑2 This invention achieves the goal of producing hydrogen and high-value-added sulfur products with low energy consumption by requiring a relatively low voltage of 0.525 V at a current density. It has advantages such as simple preparation process, controllable operating conditions, and low raw material costs, possessing the potential for large-scale production and serving as a high-performance catalyst for electrocatalytic hydrogen production and sulfur ion oxidation reactions.

The application discloses a metal sulfide ion exchanger / collagen fiber composite aerogel and a preparation method and application of the metal sulfide ion exchanger / collagen fiber composite aerogel for removing Sr 2+ ions in an aqueous solution, and belongs to the technical field of new materials. The metal sulfide ion exchanger / collagen fiber composite aerogel is a sponge-like bulk material; the sponge-like bulk material is formed by interweaving a metal sulfide ion exchanger and collagen fibers. The composite aerogel has fast kinetic response, high adsorption capacity, excellent selectivity and a wide pH value adsorption activity range for removing Sr 2+ ions. The application of the composite aerogel for removing Sr 2+ ions in an aqueous solution not only solves the problems of poor operability and difficulty in recovery from a solution of an existing metal sulfide ion exchanger, but also realizes the reuse of leather industry waste (a source of collagen fibers). The composite aerogel has a wide application prospect in treating radioactive wastewater containing Sr.

The present invention provides a preparation method of a high-entropy metal sulfide electrode material. A three-electrode system is constructed with a substrate material as the working electrode, a saturated calomel electrode as the reference electrode, and a Pt sheet as the counter electrode. A mixed solution of at least five metal nitrates containing different transition metal ions is used as the electrolyte, and electrodeposition is carried out under the three-electrode system to obtain a metal hydroxide electrode precursor. The electrode precursor is subjected to sulfidation treatment to obtain a high-entropy metal sulfide electrode material. The present invention also provides an electrolytic cell using the above high-entropy metal sulfide electrode material as the anode electrode, which can efficiently and with low energy consumption oxidize sulfide ions in sulfur-containing wastewater and then assist in hydrogen production by electrolyzing water. At the same time, the electrolytic cell uses a carbon-modified sodium ion exchange membrane, which can effectively avoid the shuttle of sulfide ions and improve the efficiency and purity of hydrogen production at the cathode. As a new solution combining environmental treatment and clean energy hydrogen production, the present invention has important significance and application prospects.

The invention discloses a method for synthesizing battery-grade high-purity lithium sulfide by a liquid phase method. The preparation method comprises the following specific steps: dissolving a lithium salt in a solvent X to form a lithium salt solution, dissolving anhydrous M2S and crown ether in the solvent X to form an M2S solution, adding the lithium salt solution into a reaction kettle, filling argon for replacement, adding the M2S solution into the reaction kettle, stirring, then adding an anti-solvent Y into the reaction kettle, stirring to obtain a suspended system, discharging a solid crude product lithium sulfide from the lower end of the reaction kettle, and drying to obtain the lithium sulfide. The method comprises the following steps: respectively recovering a solvent X, an anti-solvent Y and crown ether from an organic solvent through rectification, carrying out vacuum drying on crude lithium sulfide, putting the dried crude lithium sulfide into a rotary furnace, introducing inert gas, roasting, and removing organic carbon and sulfur to obtain a battery-grade high-purity lithium sulfide product, and recycling the crown ether through recovery. According to the invention, crown ether is introduced and forms a complex with alkali metal ions, so that the concentration of sulfur ions in an organic solvent is improved, the reaction rate of lithium sulfide is promoted, formation of LiMS by-products is effectively avoided, and the yield and purity of Li2S are improved.

The invention relates to denitrifying bacteria and application thereof in biological desulfurization in an oil field system. The denitrifying bacteria are named as warm bacillus V3, and the preservation number of the denitrifying bacteria is CGMCC (China General Microbiological Culture Collection Center) NO.46386. The warm bacillus V3 and sodium nitrate are injected into an oil field system containing sulfate reducing bacteria in a water injection mode for biological sulfur removal. Compared with the prior art, a novel denitrifying bacterium capable of remarkably reducing the sulfur ions in the water body of the oil field system is innovatively found, the novel denitrifying bacterium belongs to a new species of thermobacillus, and the highest removal rate of the sulfur ions can reach 99.2% after the denitrifying bacterium is added into an oil field sulfate reducing bacterium system for short-term culture.

The invention provides a cobalt-coated cadmium sulfide photocatalytic hydrogen production material and a preparation method and application thereof, and relates to the technical field of photocatalytic materials.The preparation method of the cobalt-coated cadmium sulfide photocatalytic hydrogen production material specifically comprises the following steps that S1, thioacetamide and cadmium acetate dihydrate serve as raw materials, and CdS nanoparticles are prepared through a solvothermal method; s2, cobalt acetate tetrahydrate and the CdS nanoparticles prepared in the step S1 serve as raw materials, and the cobalt-coated cadmium sulfide photocatalytic hydrogen production material is prepared through an ion adsorption method. Compared with the prior art, the cobalt-coated cadmium sulfide photocatalytic hydrogen production material as well as the preparation method and the application thereof have the advantages that the autoxidation process of cadmium sulfide under the illumination condition is effectively inhibited, the dissolution of sulfur ions is reduced, the photochemical stability of the material is remarkably improved, and the service life of the material is prolonged.

The invention relates to the technical field of functional materials, and particularly discloses a Cu2O coated Cu1. 94S egg shell nanostructure catalyst and a preparation method and application thereof, the preparation method comprises the following steps: dispersing sodium sulfide in deionized water to obtain a sodium sulfide solution; and adding the Cu2O nanocrystal into methanol, carrying out ice bath reaction, adding a sodium sulfide solution, continuing the reaction, and carrying out post-treatment to obtain the Cu2O coated Cu1.94S egg shell nanostructure catalyst. The Cu2O nanocrystal is used as a template and is subjected to anion exchange with sulfur ions, cuprous ions are combined with sodium sulfide added into a reaction system, a Cu1.94S shell layer is formed on the Cu2O nanocrystal in a nucleation mode, the Cu2O coated Cu1.94S egg shell nanostructure catalyst is finally prepared and obtained, the prepared Cu2O coated Cu1.94S egg shell nanostructure catalyst shows higher current density, and the Cu2O coated Cu1.94S egg shell nanostructure catalyst can be applied to the preparation of the catalyst. And the catalyst has higher catalytic selectivity and activity and higher catalytic efficiency, and can significantly improve the conversion efficiency of single-component Cu2O in electro-catalysis of NO3 <->.

According to the hydrogen sulfide gas removal agent, the removal method and the device, the hydrogen sulfide gas is treated in two stages by adopting the absorbent and the fixing agent, and the stability of the absorbent is enhanced and the oxidation and conversion of hydrogen sulfide are promoted by cooperating the compounded surfactant and the catalyst with the sodium hydroxide solution; wherein the use amount of the surfactant is 1-3wt% of the mass of the catalyst; sulfur ions are further fixed through calcium hydroxide under the action of an oxidizing agent and a porous adsorbent, the oxidizing agent is a strong oxidizing agent capable of generating sodium ions or calcium ions in a solution, the treatment burden of filtrate recycling is relieved, secondary generation and escape of hydrogen sulfide gas are inhibited, and the removal rate of hydrogen sulfide gas in tail gas is increased; the method is suitable for treating tail gas containing hydrogen sulfide in industrial production.

This invention belongs to the field of materials synthesis and analysis, specifically relating to a heterojunction composite material Co. 1‑x Preparation method of S / MoS2 and its application in sulfide detection. This invention is the first to apply three-dimensional Co... 1‑x Two-dimensional MoS2 nanosheets were grown in situ on S nanocubes to prepare a 3D / 2D heterostructure composite material Co. 1‑x S / MoS2. Compared to the original C o1‑x Compared to S and MoS2, the obtained Co has a 3D / 2D heterostructure 1‑x The peroxidase catalytic activity of S / MoS2 is significantly enhanced. In the presence of sulfide ions, Co... 1‑x The peroxidase catalytic activity of S / MoS2 can be selectively inhibited, thereby enabling the development of a Co-based... 1‑x A colorimetric detection method catalyzed by S / MoS2 nanozymes is used for the detection of sulfur ions in environmental water samples, and it has high specificity.

To provide an electrochemical separation method of tramp elements in iron scrap capable of highly efficiently removing the tramp elements from the iron scrap even if sulfide ions or the like are not incorporated into an electrolytic solution, and to provide an electrochemical separation system suitable for performing the electrochemical separation method.SOLUTION: An electrochemical separation system of tramp elements in iron scraps, comprising: electrochemically separating tramp elements in an iron scrap melt from iron by using the iron scrap melt as a cathode electrode and molten iron oxide containing 10 mass% or more of iron oxide as an electrolyte; and an electrochemical separation system of tramp elements in an iron scrap melt comprising the iron scrap melt acting as a cathode electrode, an iron scrap melt acting as an anode electrode, and an electrolyte comprising molten iron oxide containing 10 mass% or more of iron oxide.SELECTED DRAWING: Figure 1

The invention relates to the technical field of thick-film resistors, in particular to an anti-vulcanization thick-film resistor and a preparation method thereof. The front electrode and the back electrode are arranged on the upper surface and the lower surface of the high-purity aluminum oxide substrate; an impedance element disposed between the front electrodes; a protective layer covering the impedance element; the resin silver layer is arranged above the protective layer; the multi-layer end face structure comprises a nickel-chromium alloy layer, a pure nickel layer and a silver layer which are sequentially arranged from inside to outside; wherein the multi-layer end face structure is formed through a sputtering process and continuously covers the edge areas of the resin silver layer and the protective layer, and the nickel-chromium alloy layer, the pure nickel layer and the silver layer in the multi-layer sputtering structure form a gradient electronic structure. The nickel-chromium alloy layer has high electron affinity, free electrons in the environment can be effectively captured, the opportunity that the free electrons are combined with sulfur ions is reduced, and a composite protection structure with the labyrinth effect is formed.

The invention provides application of tetrathiomolybdate in preparation of drugs for inhibiting inflammatory factor storm, and belongs to the technical field of drugs for treating inflammatory factor storm and respiratory system diseases. The general molecular formula of the tetrathiomolybdate is X < + > MoS < 42-Y < + >, and the positions of ionic bonds of four sulfur ions of the tetrathiomolybdate are interchangeable; x + and Y + are the same or different cations; the positive ions are inorganic positive ions and / or organic positive ions which can be dissociated in a solution to generate MoS < 2-> or can be subjected to enzymolysis in a biological system to generate MoS < 2->. The invention discloses unique advantages of a single drug scheme in inflammatory factor storm and respiratory system related diseases, especially bacterial acute respiratory system inflammation, for the first time, and tetrathiomolybdate is used as a single active component for preparing the drug for treating bacterial pneumonia and non-viral acute lung injury / acute respiratory distress syndrome.

Disclosed in the present invention are a low-temperature curing conductive silver paste and a preparation method therefor. The conductive silver paste comprises silver powder, resin, a solvent, a curing agent, a thixotropic agent and an inorganic ion diffusion inhibitor in a mass ratio of (93-98): (1.0-3.0): (0.1-1.0): (0.1-1.0): (0.01-0.05): (0.01-0.2), wherein the inorganic ion diffusion inhibitor is an inorganic salt, and anions in the inorganic ion diffusion inhibitor are selected from one or more of carbonate, sulfate, chromate, sulfide ions, chloride ions, bromide ions and iodide ions. The conductive silver paste of the present invention can inhibit silver migration phenomena, enhance the reliability of modules, and realize the optimal conductivity and migration resistance.

The present invention discloses a multifunctional ratio fluorescence probe, which is mainly obtained by the coupling reaction of a metal-organic framework material Uio-66-NH2 and protoporphyrin. The preparation method may include the following steps: Step 1, synthesis of the metal-organic framework material Uio-66-NH2; Step 2, preparation of a protoporphyrin stock solution; Step 3, coupling action of Uio-66-NH2 and protoporphyrin. The multifunctional fluorescence probe of the present invention is simple to prepare, has a very significant fluorescence response to acidity and alkalinity, has an obvious visual effect under the irradiation of a 365 nm ultraviolet lamp, and is easy to distinguish. In addition, the probe can realize highly sensitive reversible detection of copper ions and sulfide ions, and has the advantages of high selectivity, rapid detection, strong practicability, etc., providing a potential application prospect for the rapid detection of target substances in the water environment.

This invention discloses a real-time tracking method and system for disaster-causing parameters of solid-state batteries, relating to the field of health management technology. By employing alkaline absorbent chemical trapping combined with offline quantitative analysis using ion chromatography, it efficiently and accurately traps and analyzes sulfide gases, overcoming the problems of strong corrosiveness, easy oxidation, and difficulty in accurate quantification of sulfide gases in traditional detection methods. This improves the accuracy of sulfide ion mass concentration Clz and recovery rate Hsl. Simultaneously, through the synergistic effect of a two-stage series absorption device and a dynamic flow-time adjustment strategy, and by calculating the dynamic flow rate adjustment coefficient Xcxs and comparing it with the safety threshold W, efficient trapping and stable enrichment of the absorbent are ensured throughout the entire gas production stage of thermal runaway. Furthermore, a tracking and prediction model is constructed to fit and obtain the comprehensive disaster-causing index Zfzs of thermal runaway, enabling real-time tracking of the disaster risk of solid-state batteries and compensating for the shortcomings of existing technologies in quantitative research on toxic sulfide gases.

This invention provides a method for preparing PdBr2 and its phosphine derivatives, and their applications, belonging to the field of chemical engineering technology. The method for preparing PdBr2 provided by this invention includes the following steps: dissolving palladium metal, nitric acid, and a catalyst, followed by baking to obtain an intermediate product; the catalyst contains chloride or sulfide ions; and mixing the intermediate product with a bromide-containing substance to undergo a precipitation reaction to obtain PdBr2. This invention uses a catalyst when dissolving palladium metal with nitric acid. The chloride or sulfide ions in the catalyst coordinate with Pd(II) to form a complex, significantly reducing the redox electrode potential of palladium metal, thereby accelerating the dissolution rate of palladium metal and inhibiting NO3-. ‑ The strong coordination with Pd(II) can be achieved by baking, which can break the Pd-NO coordination bond, and then the introduction of bromide ions can improve the yield of PdBr2.

The application discloses a kind of stable and efficient short-range nitrification membrane aeration biofilm construction method, belong to wastewater treatment technical field.The method is as follows: the ammonia nitrogen-containing wastewater is continuously introduced into the membrane aeration biofilm reactor (MABR) inoculated with nitrification sludge, and first forms nitrification biofilm.Further by adding alkali pump to the reactor intermittent injection containing sulfide lye, maintain the pH value of reactor between 8.0~8.5, sulfide ion concentration is not less than 15mg S / L.At the same time, adjust the gas supply pressure, so that the reactor dissolved oxygen is less than 0.1mg / L.Utilize sulfide ion (HS ‑ ), pH and low dissolved oxygen combination, efficiently inhibit nitrite oxidizing bacteria in biofilm, construct stable short-range nitrification membrane aeration biofilm.The biofilm can be used for low-concentration ammonia nitrogen wastewater treatment, and energy consumption is low, easy to control.

A quantum dots light emitting diode is provided. The quantum dots light emitting diode includes a first electrode layer; an electron transport layer on the first electrode layer; a quantum dots layer on a side of the electron transport layer away from the first electrode layer, and a non-oxide chalcogen-containing compound between the first electrode layer and the quantum dot layer. The non-oxide chalcogen-containing compound includes a metal element and a non-oxide chalcogen. The non-oxide chalcogen is selected from a group consisting of sulfide ion, selenium ion, and tellurium ion.

The invention discloses a sulfide pollution control and resourceful treatment method based on a conductive composite membrane coupling system, and belongs to the technical field of wastewater treatment. By constructing a composite membrane coupling system, more than 99% of sulfur ions in the wastewater can be removed; a reaction product ZnS-NiS-ACF Power is loaded to the composite membrane, and the multifunctional catalytic membrane is successfully prepared; under the synergistic effect of visible light and PMS, the removal rate of the catalytic membrane on tetracycline reaches 87.0%, and the catalytic membrane shows excellent catalytic activity and PMS activation capacity. According to the invention, a membrane separation technology and an adsorption-catalytic oxidation technology are efficiently coupled, so that the dual targets of efficient removal and resource utilization of sulfides are achieved; pMS degradation pollutants are activated in a low-cost, efficient and environment-friendly manner. The method has the remarkable advantages of being high in treatment efficiency, low in operation cost, environmentally friendly and the like, is not only suitable for treatment of industrial wastewater and urban black and odorous water bodies, but also provides a new thought for development of catalytic materials and application of an advanced oxidation technology.

The invention belongs to the field of hydrometallurgy, and particularly relates to an antimony hydrometallurgy method coupled with sulfur ion oxidation reaction, which comprises the following steps: leaching antimony concentrate in a leaching agent containing water-soluble sulfide A and alkali A to prepare antimony-containing leachate; the antimony-containing leachate is subjected to electrolytic treatment in an electrolytic bath; the electrolytic bath comprises a container and a cation diaphragm for dividing the container into an anode chamber and a cathode chamber; a cathode is arranged in the cathode chamber, and an anode compounded with a sulfur ion oxidation catalyst is arranged in the anode chamber; in the electrolysis process, the antimony-containing leachate is used as an electrolyte A to be placed in a cathode chamber, a solution dissolved with water-soluble sulfide B and alkali B is used as an electrolyte B to be placed in an anode chamber, then an anode and a cathode are conductively connected for electrolysis, antimony is deposited in the cathode chamber to form antimony, and in the process, sulfur ions are subjected to an oxidation reaction in the anode chamber. According to the method, the yield and the purity of antimony can be improved, and in addition, the energy consumption and the consumption of anode alkali can be effectively reduced.

The present invention belongs to the field of analytical detection and relates to the continuous detection of sulfide ions and mercury ions, and in particular refers to the preparation method and application of PdPt bimetallic nanozymes using yam polysaccharide as a template. The present application prepares a yam polysaccharide solution by dissolving yam polysaccharide in distilled water. Then, a mixed solution of potassium tetrachloroplatinate and palladium chloride is added dropwise to the yam polysaccharide solution, and the PdPt nanozyme is obtained by high-temperature stirring, centrifugation, and vacuum drying. The PdPt nanozyme prepared by the present invention can be used for continuous detection of sulfide ions and mercury ions with high sensitivity, and can realize on-site visual detection.