7 results about "Cuprous sulfide" patented technology

The application provides a kind of copper sulfide@nickel disulfide positive electrode material based on two-dimensional nanosheet wrapping three-dimensional cube and its preparation method and lithium-magnesium dual-ion battery, first using copper salt, alkaline solution and D (+) -glucose in the water bath condition of 70 DEG C, directional formation Cu2O cube.And then, Cu2O and nickel source, sulfur source and surfactant are synthesized by solvothermal synthesis, forming the structure of two-dimensional and three-dimensional combination of NiS2 nanosheet wrapping Cu2S cube.The two-dimensional and three-dimensional combination structure can shorten the particle transmission path, achieve the effect of fast charging and discharging, at the same time, provide more active sites, increase the specific surface area, fully contact with electrolyte, improve the cycle stability of battery.

The present application belongs to the technical field of transformer oil sulfur corrosion protection, and relates to a method for simulating partial discharge of oil-paper insulation under cuprous sulfide deposition, which comprises the following steps: establishing a geometric model of partial discharge of oil-paper insulation by using finite element simulation software COMSOL Multiphysics, and designing cuprous sulfide deposition points; setting physical fields and boundary conditions based on the geometric model, and establishing a fluid dynamics model of transformer oil and a bipolar carrier transport model of insulation paper; performing grid division on the model, and setting initial parameters, solver parameters and voltage excitation; performing transient calculation on the model, and solving the electric field distribution and charge distribution in the partial discharge process of the model. The present application uses the fluid dynamics model and the bipolar carrier model to predict and calculate the severity of partial discharge when cuprous sulfide is deposited at different positions of oil-paper insulation, thereby providing a reference for the influence of cuprous sulfide deposition on the partial discharge characteristics in oil-immersed transformers, and reducing the safety accidents caused by the insulation deterioration of transformers due to cuprous sulfide deposition.

The invention discloses a process method for deeply removing copper from crude lead by using dangerous solid wastes, and belongs to the technical field of non-ferrous metal metallurgy and resource utilization of the dangerous solid wastes. Dangerous solid waste containing arsenic and sulfur serves as a copper removal agent and is added into molten lead bullion, stirring and smelting are conducted at the temperature of 450-900 DEG C, copper reacts with arsenic and sulfur to generate cuprous sulfide, copper arsenide and other compounds insoluble in lead liquid by means of the preferential affinity of arsenic and sulfur to copper, the compounds float upwards to form a low-density arsenic matte scum layer, and efficient separation of copper is achieved through mechanical slag scattering. The copper content in the lead liquid after copper removal can be reduced to 0.1% or below, and meanwhile harmless treatment of dangerous solid waste and resource recycling of valuable elements are achieved. The method is simple in process, low in cost and high in copper removal efficiency, and has remarkable environmental benefits and economic benefits.

This invention provides a method for preparing and applying a copper-doped molybdenum disulfide (MoS2) photocatalyst. The preparation method includes the following steps: using bulk MoS2 as raw material, two-dimensional MoS2 is exfoliated using a lithium-ion intercalation method; using two-dimensional MoS2 as a substrate, copper-supported MoS2 is prepared using an impregnation method; using thiourea and copper-supported MoS2 as raw materials, a copper-doped MoS2 photocatalyst is prepared using a heat treatment method. The copper-doped MoS2 photocatalyst prepared by this invention has a unique crystal phase composition of copper sulfide (CuS), cuprous sulfide (Cu2S), and molybdenum disulfide (MoS2). It can form a built-in electric field on the surface by balancing the Fermi level, suppressing electron-hole recombination, driving directional charge migration, and enhancing the photocatalytic activity of the catalyst. The catalyst proposed in this invention can efficiently remove perfluorooctanoic acid (PFOA), a new pollutant in water, under ultraviolet light.

This invention prepares a cuprous sulfide / tungsten sulfide composite electrocatalyst (Cu₂S / WS₂) for use in an alkaline electrocatalytic sulfur oxidation coupled with acidic hydrogen production (SOR / / HER) system. Using nickel foam as a support, the Cu₂S / WS₂ / NF composite structure was constructed via a hydrothermal method combined with subsequent electrodeposition and sulfidation treatment. WS₂ provides numerous active sites, while Cu₂S enables effective interfacial modulation, significantly enhancing the catalyst's conductivity and improving its catalytic activity and sulfur poisoning resistance in the electrocatalytic sulfide oxidation reaction (SOR). The catalyst prepared in this invention exhibits excellent electrocatalytic performance and long-term stability in alkaline electrolytes. The preparation method is simple, the synthesis process is highly operable, and it can cleanly and efficiently carry out SOR reactions. 2‑ The conversion method is applicable to energy conversion fields such as hydrogen production from hydrogen sulfide decomposition, showing excellent industrial application prospects and helping to realize the resource recovery of sulfur.

The invention discloses a gold nanoparticle composite semiconductor material and a preparation method and application thereof, the composite semiconductor material is dumbbell-shaped, the tip part of the composite semiconductor material comprises independent cuprous sulfide or coexistence of silicon dioxide and cuprous sulfide, and the middle main body part of the composite semiconductor material is a gold nanoparticle bipyramid or a gold nanorod. The dumbbell-shaped cuprous sulfide-gold nano bipyramid composite material, the dumbbell-shaped cuprous sulfide-silicon dioxide-gold nano bipyramid composite material, the dumbbell-shaped cuprous sulfide-gold nanorod composite material, the dumbbell-shaped cuprous sulfide-silicon dioxide-gold nanorod composite material and the preparation method have the advantages that the dumbbell-shaped cuprous sulfide-gold nano bipyramid composite material and the dumbbell-shaped cuprous sulfide-silicon dioxide-gold nanorod composite material are successfully prepared; a series of different gold nanoparticle composite semiconductor materials are prepared by changing the thickness and the composite position of Cu2S, and the carbon dioxide reduction performance of the composite material is stronger than that of pure gold nanoparticles and Cu2S.

The invention discloses a method for preparing a cuprous sulfide nanowire by taking a carbon nanotube as a template, and belongs to the technical field of synthesis of nano materials. According to the method disclosed by the invention, the capillary pressure is remarkably enhanced by utilizing the characteristic that the diameter of the carbon nano tube is relatively small, and cuprous sulfide is sucked into a carbon nano tube template in a nanowire form when a surface tension critical value range is met. The size of the synthesized cuprous sulfide nanowire can be accurately regulated and controlled by using the carbon nanotubes with different tube diameters, and the length of the synthesized cuprous sulfide nanowire can be regulated and controlled by selecting the carbon nanotubes with different lengths. The method has the advantages of simple equipment, convenience in operation, no need of a process of preparing a precursor by using a complex chemical reagent and the like, and is suitable for a production scene in which the size of the nanowire needs to be designed. The growth technology disclosed by the invention is simple, rapid and low in cost, the size of the obtained nanowire can be effectively designed, the requirements of different application scenes on the size of the nanowire are met, the use of harmful chemical substances is reduced, and the environmental pressure is relieved.