7 results about "SULFIDE ION" patented technology

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.

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 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.

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.