157results about "Zinc sulfides" patented technology

The invention discloses a high-performance sodium ion battery negative electrode ZnS / CoS (at) C composite material and a preparation method thereof, the material preparation method has the characteristics of definite control parameter, easy purity control, simple operation, good process repeatability and the like, and the prepared sodium ion secondary battery negative electrode material has excellent sodium ion intercalation and deintercalation capability and can be used for preparing a sodium ion secondary battery negative electrode material. The specific capacity, the cycling stability, the coulombic efficiency and the rate capability of the sodium ion secondary battery can be effectively improved, the requirements of different conditions can be met, and the application prospect is wide.

The invention relates to a copper-doped zinc sulfide nano composite material as well as a preparation method and application thereof, and belongs to the technical field of catalysts. In the copper-doped zinc sulfide nano composite material disclosed by the invention, the doping proportion of Cu is 0.1 wt%-10 wt%. The copper-doped zinc sulfide nano composite material prepared by the preparation method disclosed by the invention can be used for effectively degrading plastics and realizing efficient hydrogen evolution. The visible light absorption range can be effectively expanded by doping a small amount of Cu, and separation and transfer of carriers are promoted. Meanwhile, nuclear magnetic resonance detection analysis shows that the plastic is successfully degraded into small organic molecules such as formate, acetate and glycollate under photocatalysis. The invention provides a new thought for the design of a non-toxic catalyst in a sustainable and sunlight-driven plastic light conversion process, and responds to the aims of environmental protection, low cost and high efficiency.

The invention relates to the field of inorganic material preparation, and particularly discloses pseudo-boehmite and a preparation method thereof. A preparation method of pseudo-boehmite comprises the following steps: (1) mixing an aluminum salt solution and an aluminate solution, adding a crystal form regulating agent, and stirring for reaction to obtain a sol system; the crystal form regulating agent is ZnS quantum dots modified by thiohydracrylic acid; (2) adding a pore diameter guiding agent into the sol system, and aging for 6-8 hours; the pore diameter guiding agent is a compound of a polyethylene glycol-polypropylene glycol-polyethylene glycol triblock copolymer and sodium citrate; and (3) carrying out solid-liquid separation on the aged sol system, and washing and drying the obtained solid to obtain the pseudo-boehmite. The proportion of 5-10nm pores of the pseudo-boehmite prepared by the preparation method disclosed by the invention reaches 90% or above, so that the pore distribution requirement of a fine catalytic reaction on the pseudo-boehmite can be met, and the efficient catalytic reaction is favorably realized.

The method for preparing nickel sulfate according to an exemplary embodiment may prepare a nickel-containing raw material. Nickel may be selectively leached from a nickel-containing feedstock using an oxidant to produce a first leachate. Residual metals may be separated from the first leachate to produce a second leachate. Nickel sulfate may then be obtained from the second leachate. Therefore, a separate nickel extraction step can be omitted, thereby reducing unnecessary by-products.

The invention discloses a preparation method of a zinc-based composite piezoelectric catalyst, which adopts a microwave-oil bath combined method to more quickly and conveniently prepare a zinc oxide-zinc sulfide composite catalyst. Compared with a hydrothermal method of a drying oven, the microwave method has the advantages that the capability of microwaves penetrating through an object is extremely high, so that the object can quickly and uniformly absorb the microwaves and spread over the whole object, the heating process becomes quick and stable, and the microwave method is more time-saving and efficient; the zinc oxide is partially vulcanized in an oil bath manner, so that the high-temperature reaction of a hydrothermal method is avoided, and the cost is lower. Besides, the zinc oxide-zinc sulfide composite piezoelectric catalyst prepared by the method has excellent cycle stability in piezoelectric catalytic hydrogen production, and after 50 hours of cycle, the average yield of piezoelectric catalytic hydrogen evolution is only reduced by 12.2% and tends to be stable.

The invention discloses a zinc sulfide nano material with chiral morphology and a preparation method thereof, and the method comprises the following steps: 1, adding an alkali source solution into a chiral ligand aqueous solution, and carrying out ultrasonic treatment at 30 DEG C to obtain a chiral ligand reaction precursor solution; 2, adding a zinc salt solution into the chiral ligand reaction precursor solution, and stirring to obtain a mixed turbid solution; 3, placing the mixed turbid liquid in a water bath kettle at the temperature of 15-50 DEG C, keeping the temperature for 3-30 minutes, separating out precipitates, washing and freeze-drying to obtain a zinc-chiral ligand complex nano material; and 4, transferring the zinc-chiral ligand complex nano-material to a quartz porcelain boat, putting the quartz porcelain boat into a tubular furnace, heating from room temperature to 300-700 DEG C at a heating rate of 1-5 DEG C / min in a protective atmosphere, calcining for 1-12 hours, and cooling to obtain the zinc sulfide nano-material with chiral morphology. The preparation method is simple, easy to control, low in cost and high in universality, and the prepared chiral zinc sulfide nano material has good crystallinity and stability.

The invention relates to the field of nano materials and photonic crystal materials, in particular to nano particles, preparation of the nano particles and application of the nano particles in self-assembly of three-dimensional non-close-packed photonic crystals. The nanoparticles can be self-assembled into a three-dimensional non-close-packed photonic crystal in a concentration range of 1 wt%-60 wt%. According to the invention, the problem that the self-assembly of the three-dimensional non-close-packed colloid photonic crystal is difficult to realize at low concentration at present is solved. By adjusting the mass fraction of the particles in a solution, the three-dimensional non-close-packed colloidal photonic crystal with rich colors can be formed through self-assembly, and the three-dimensional non-close-packed colloidal photonic crystal has wide application prospects in the fields of sensing, display and the like.

The present invention discloses a device and method for preparing high-strength multi-spectral zinc sulfide sheets, comprising a bracket and a heating furnace fixed to the top of the bracket, a sealing cover hinged on the top of the heating furnace, a control box fixed to the top of the bracket, a vacuum pump fixedly installed inside the control box, an air inlet of the vacuum pump connected to an exhaust pipe, one end of the exhaust pipe passing through the control box and connected to the surface of the heating furnace, a one-way valve fixed to the surface of the exhaust pipe, a hollow cylinder connected to the surface of the exhaust pipe, and a vacuum sensor provided inside the exhaust pipe. The present invention relates to the technical field of zinc sulfide preparation. The device and method for preparing high-strength multi-spectral zinc sulfide sheets facilitate rapid installation and removal of the vacuum sensor through the provision of a vacuum sensor installation mechanism, facilitate subsequent maintenance and replacement, and are highly convenient to use. The provision of a cooling mechanism facilitates rapid cooling of the heating furnace, thereby improving cooling efficiency.

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.

The invention discloses a hydrothermal synthesis preparation method of ZnS hollow nanospheres, which is characterized in that zinc nitrate and thiourea are used as precursors, absolute ethyl alcohol and ethidene diamine are used as solvents, and the ZnS hollow nanospheres are directly prepared by controlling the reaction temperature, time and filling degree. The method is simple in process and low in cost, and the obtained product has application potential in photocatalysis and photoelectric device materials.

The invention discloses a composite material and a preparation method thereof, a photoelectric device and a display device, and relates to the technical field of display. The composite material comprises inorganic nanoparticles and a complex, wherein the complex comprises phytic acid and metal ions. According to the composite material provided by the invention, the complex can avoid agglomeration of the inorganic nanoparticles and improve the stability of the inorganic nanoparticles, so that the stability of the device is improved.

This invention discloses a method for preparing a nano-zinc sulfide composite material, comprising: (1) dissolving ammonium molybdate in deionized water, stirring evenly to form a 50 g / L solution, then sequentially adding zinc acetate and thiourea, wherein the mass ratio of ammonium molybdate to zinc acetate and thiourea is 2:1, and stirring thoroughly to obtain a mixed solution; (2) transferring the obtained mixed solution to a reaction vessel, reacting at a constant temperature of 160℃ for 12 h, and obtaining a solid powder after treatment; (3) heat-treating at 300-400℃ for 2 h to obtain the nano-zinc sulfide composite material. This invention synthesizes zinc sulfide nanomaterials with different sizes and morphologies, while molybdenum dioxide nanoparticles modify the surface of zinc sulfide. The two work synergistically to have heterogeneous structural characteristics that promote and accelerate electron transport. Using them as electrode materials for electrochemical detection of nicotine and the metabolite cotinine content in cigarettes shows potential application advantages.

The invention relates to the field of zinc sulfide production, in particular to a reaction device and system for producing zinc sulfide products, the reaction device comprises side covers, a plurality of reaction chambers are installed on the side covers, the two side covers are symmetrically installed on the two sides of a conveying mechanism, and an outlet end cover and an inlet end cover are installed at the two ends of the conveying mechanism and the two ends of the two side covers respectively. The outlet end cover is externally connected with a negative pressure pump, and a uniform mixing mechanism is mounted in the inlet end cover in a sealing manner and is used for uniformly mixing sulfur steam and zinc steam; the conveying mechanism comprises a side plate and a conveying channel, an upper conveying part and a lower conveying part are mounted on the conveying channel, nozzles are rotationally mounted on the upper conveying part and the lower conveying part, and the nozzles are arranged in the reaction chamber. By controlling the air pressure in the reaction chamber, the consistency of the deposition thickness of a product is controlled, and the phenomenon that the product is too thin is avoided; by controlling the gas inlet direction and position of the reaction gas in the reaction chamber, the phenomenon of non-uniform deposition of the product thickness is avoided.

The present application relates to the field of nanomaterial technology, and specifically discloses a face-centered cubic nano zinc sulfide, a hexagonal nano zinc sulfide and a preparation method thereof. The preparation method of the face-centered cubic nano zinc sulfide provided by the present application comprises the following steps: mixing an inorganic zinc salt and an inorganic sulfur salt, grinding them evenly to obtain a premix; adding a catalyst solution to the premix, reacting under grinding for 40-60 minutes to obtain a crude product; washing the crude product, filtering, filter pressing, and vacuum drying to obtain face-centered cubic nano zinc sulfide; and hexagonal nano zinc sulfide obtained by roasting the above-mentioned face-centered cubic nano zinc sulfide. The preparation method of the face-centered cubic nano zinc sulfide and hexagonal nano zinc sulfide provided by the present application uses less water and does not produce organic waste liquid, which has great practical significance.

The present invention relates to the use of iron- or zinc-based nanostructured compounds developed for use in water-based drilling fluids (WBDFs) and non-aqueous drilling fluids (NDFs). Furthermore, the present invention evaluates the H2S sequestration capacity of these nanostructured compounds and compares them to conventional metallic oxides and to other currently used sequestrants.

The invention provides a negative active material and a preparation method thereof, a negative plate, a battery and electric equipment, and relates to the technical field of sodium ion batteries. The negative electrode active material comprises a carbon shell doped with transition metal sulfide, and the wall thickness of the carbon shell is 10-45nm. The negative electrode active material has a thin-wall hollow unique structure, the thin-wall hollow unique structure can relieve volume expansion of sulfide on one hand, the thin outer wall of the thin-wall hollow unique structure can remarkably shorten the diffusion distance of sodium ions and remarkably improve ion transmission of the sodium ions on the other hand, and the negative electrode active material can be obtained through a simple preparation process; the method has the advantages of low equipment requirement, environment friendliness and the like.

A semiconductor nanocrystal particle, a production method thereof, and a light emitting device including the same. The semiconductor nanocrystal particle includes a core including a first semiconductor nanocrystal, a first shell surrounding the core, the first shell including a second semiconductor nanocrystal including a different composition from the first semiconductor nanocrystal, a second shell surrounding the first shell, the second shell including a third semiconductor nanocrystal including a different composition from the second semiconductor nanocrystal, wherein the first semiconductor nanocrystal includes zinc and sulfur; wherein the third semiconductor nanocrystal includes zinc and sulfur; wherein an energy bandgap of the second semiconductor nanocrystal is less than an energy bandgap of the first semiconductor nanocrystal and less than an energy bandgap of the third semiconductor nanocrystal; and wherein the semiconductor nanocrystal particle does not include cadmium.

The invention discloses a zinc sulfide production process and drying equipment for production, and relates to the technical field of zinc sulfide production, the zinc sulfide production process comprises a drying machine shell, a treatment mechanism is arranged in the drying machine shell, the treatment mechanism comprises a stirring assembly and a rotary drum assembly, and the stirring assembly comprises a stirring base rod; a plurality of stirring supporting rods are arranged on the side surface of the stirring base rod, a movable triggering top block is arranged on the surface of one side of each stirring supporting rod, and an elastic block is arranged on the surface of the side, close to the corresponding stirring supporting rod, of each triggering top block; according to the scheme, by arranging the stirring assembly and the rotary drum assembly, crushing can be conducted when large filter cakes are encountered in the stirring process, the crushing degree of materials is improved, the drying speed is increased, and the drying quality is improved.

The invention relates to the technical field of zinc sulfide preparation, in particular to a micro-particle-size zinc sulfide preparation method which comprises the steps that zinc oxide powder is dispersed in O / W type microemulsion, sulfuric acid is dropwise added for reaction, and zinc sulfate microemulsion is obtained; introducing hydrogen sulfide gas into the zinc sulfate microemulsion, maintaining the reaction temperature of 25 DEG C, and continuously stirring to obtain a reaction suspension; transferring the reaction suspension to centrifugal equipment, collecting bottom precipitate, washing and drying to obtain a zinc sulfide primary product; dispersing the zinc sulfide primary product in the coating liquid, continuously stirring, then transferring into a vacuum drying oven for drying to obtain micro-particle-size zinc sulfide powder, and finally barreling by filling equipment, scanning and warehousing to obtain a finished product. The O / W type microemulsion limits the reaction in a water core through the confinement effect, the particle size of zinc sulfide is directly locked in a range equivalent to the size of the water core, and the problem that the particle size is too large due to free growth of crystals in a conventional solution reaction is fundamentally avoided.

The invention discloses a ZnO / ZnS / ZnSO4 nano composite material and a gas sensor based on the ZnO / ZnS / ZnSO4 nano composite material, a ZnO / ZnS heterojunction composite material with rough spherical morphology is prepared by adopting a two-step method, part of ZnS in the ZnO / ZnS heterojunction composite material can be converted into ZnSO4 through subsequent controllable annealing treatment, so that a ZnO / ZnS / ZnSO4 three-layer composite material is obtained, and finally the ZnO / ZnS / ZnSO4 three-layer composite material is prepared into the gas sensor. And high-performance detection of NO2 gas is realized. The prepared sensor has the characteristics of high sensitivity, good selectivity and strong stability, has relatively high response (65) to 5 ppm NO2 at a relatively low working temperature (110 DEG C), can detect nitrogen dioxide gas with extremely low concentration, and has huge potential in the aspect of developing and detecting low-concentration nitrogen dioxide gas.

The utility model relates to the technical field of ore processing, and particularly discloses an antimony sulfide concentrate reduction, sulfur fixation, roasting, extraction and separation device which comprises a flotation extraction and separation device, a scraping and protection integrated structure is fixedly installed on the side wall of the flotation extraction and separation device, and the scraping and protection integrated structure comprises a collecting hopper. A motor is fixedly installed on the side wall of the collecting hopper, an output shaft of the motor and the collecting hopper are rotatably installed, a lead screw is fixedly installed on the output shaft of the motor, the lead screw is located in the collecting hopper and rotatably installed, a scraper is installed on the circumferential surface of the lead screw in a threaded mode, an L-shaped groove is formed in the collecting hopper, an L-shaped block is fixedly installed on the side wall of the scraper, and the L-shaped block is located below the lead screw. The L-shaped block is slidably mounted in the L-shaped groove, by starting the motor, the motor drives the lead screw to rotate and is in threaded transmission with the scraping plate, the scraping plate moves towards one side of the through groove, residual zinc sulfide is scraped into the through groove, then unified collection is completed, the efficiency is improved, and the practicability is improved.

Disclosed in the present invention are a metal sulfide and use thereof, and a resin composition containing the metal sulfide, relating to the technical field of sulfides. The metal sulfide of the present invention is a zinc sulfide material, the zinc sulfide material containing cobalt and iron, the mass content of cobalt in the zinc sulfide material being 200-500 ppm, and the mass content of iron in the zinc sulfide material being 3-200 ppm; and the zinc content and the pH value of the zinc sulfide material satisfy the following relational expression: 1.2≤pH-2.5×lg(WZn)≤3.3, wherein pH is the pH value of the zinc sulfide material, and WZn is the mass content of zinc in the zinc sulfide material. The present invention controls the content of cobalt and iron while also reasonably limiting the zinc content and the pH value of the metal sulfide, such that the resin composition containing the metal sulfide has high color stability and has a low whiteness value change rate after treatment with water over a long time.

Various embodiments may include a battery electrode, comprising: an iron electrode body comprising iron active material and a zinc sulfide additive, wherein the zinc sulfide additive comprises crystalline cubic zinc sulfide. Various embodiments may include a battery electrode, comprising: an iron electrode body comprising iron active material and a manganese sulfide additive, wherein the manganese sulfide additive comprises crystalline cubic manganese sulfide. Various embodiments may include an iron electrode battery, comprising: an iron electrode; and a sulfide reservoir separate from the iron electrode, the sulfide reservoir comprising crystalline cubic zinc sulfide. Various embodiments may include an iron electrode battery, comprising: an iron electrode and a sulfide reservoir separate from the iron electrode, the sulfide reservoir comprising crystalline cubic manganese sulfide.

This invention discloses a metal sulfide and its applications, as well as a resin composition containing the metal sulfide, relating to the field of sulfide technology. The metal sulfide of this invention is zinc sulfide, and the particle size distribution of the zinc sulfide satisfies the following relationship: 1.0 ≤ 1000 × (Dv75 - Dv25) / (Dv50). 2 ≤2.2, 3.0≤(Dv97×Dv50) / (Dv10×1000)≤12.8; where Dv10, Dv25, Dv50, Dv75, and Dv97 represent the particle size corresponding to a cumulative volume distribution percentage of 10%, 25%, 50%, 75%, and 97% for the zinc sulfide material, respectively, all in nm. By controlling the particle size distribution of the metal sulfide, the resin composition containing the metal sulfide exhibits high color stability and a low rate of change in whiteness value under alternating high and low temperature environments.

The invention belongs to the technical field of solid waste resourceful treatment and catalytic materials, and particularly relates to a method for extracting zinc from lead-zinc smelting slag to prepare a zinc sulfide photocatalyst and application. Zinc extracted from lead-zinc smelting slag is used as a zinc source to prepare zinc sulfide, and the method specifically comprises the steps that the lead-zinc smelting slag is added into a sulfuric acid solution for acid leaching treatment, then sodium sulfide is added into obtained acid leaching supernate for a reaction to obtain zinc sulfide sediment, the sediment is collected, washed and dried, and then the zinc sulfide photocatalyst is obtained. The zinc sulfide prepared through the method serves as a catalyst to be applied to photocatalytic decomposition of water to prepare hydrogen, the photocatalytic hydrogen production performance of the zinc sulfide is greatly improved compared with zinc sulfide synthesized through drugs and commercial zinc sulfide, and a new way and direction are provided for resource utilization of the lead-zinc smelting slag.

The application discloses an environment-friendly copper-gallium-chalcogenide zinc sulfide core-shell quantum dot as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing a gallium source, a copper source, oleylamine and 1-dodecyl mercaptan, heating, degassing in a nitrogen environment, adding a sulfur precursor solution, reacting, obtaining a quantum dot solution, heating the quantum dot solution, adding a zinc acetate precursor solution dropwise and stirring to react, continuously heating, adding a zinc stearate precursor solution dropwise and stirring to react, water quenching after the reaction, purifying, and obtaining a copper-gallium-chalcogenide zinc sulfide core-shell quantum dot. The copper-gallium-chalcogenide zinc sulfide core-shell quantum dot material prepared by the method of the application does not add toxic heavy metal materials, is harmless to human bodies and the environment, and has the advantage of high light condensation efficiency, and can effectively solve the problems of existing quantum dot materials.

The invention provides a quantum dot purification method suitable for quantum dot fluorescent microsphere application, which comprises the following steps: (1) mixing a polar solvent and a quantum dot reaction stock solution to obtain a quantum dot precipitate; (2) mixing a non-polar solvent with the quantum dot precipitate to obtain a first quantum dot solution; (3) mixing a surface ligand with the first quantum dot solution obtained in the step (2); (4) mixing a polar solvent with the quantum dot mixed solution obtained in the step (3), centrifuging, and carrying out solid-liquid separation to obtain quantum dot precipitates; (5) repeating the steps (2)-(4) for a plurality of times; and (6) mixing a non-polar solvent with the quantum dot precipitate obtained in the step (5) to obtain a second quantum dot solution. Quantum dot purification and quantum dot surface ligand exchange can be achieved at the same time.

A semiconductor nanoparticle, a method for manufacturing the semiconductor nanoparticle, an ink composition including the semiconductor nanoparticle, a semiconductor nanoparticle composite including the semiconductor nanoparticle, a display device including the semiconductor nanoparticle, and an electronic device including the semiconductor nanoparticle are provided. In the semiconductor nanoparticle, a mole ratio (Ga / In) of gallium to indium is greater than or equal to about 20:1 and less than or equal to about 40:1, and the semiconductor nanoparticle has a quantum yield of greater than or equal to about 70% and less than or equal to about 100%.

The application discloses a kind of sodium ion battery composite electrode materials and preparation method thereof, belong to nanocomposite technical field.The method disclosed in the application, prepared has the sodium ion battery composite electrode material of three-dimensional microsphere structure that ultra-thin two-dimensional nanosheet vertical interweaving constitutes, and the abundant pore between nanosheet is favorable to the quick infiltration of electrolyte, promote active substance and the contact of sodium ion, also be favorable to the sodium ion of disengagement, simultaneously, double metal sulfide doping replaces part of site of ZnO lattice, improve the electron transmission rate of ZnO, and its surface oxidation-reduction reaction rate, buffer the structural damage of electrode material due to volume change of ZnO in charge-discharge process;A layer of carbon nanocage is loaded on the surface of ZnO nanosheet, the size of carbon nanocage is about 100nm, the wall thickness is about 20nm, simultaneously play the role of improving its electron and ion transmission rate, effectively improve the charge-discharge first coulomb efficiency of ZnO negative electrode material.

To provide a semiconductor nanoparticle composite body which can be dispersed in a polar dispersant with high mass fraction while maintaining a high fluorescence quantum efficiency (QY).SOLUTION: A semiconductor nanoparticle composite body according to one embodiment of the invention is a semiconductor nanoparticle composite body in which two or more kinds of ligands including an aliphatic thiol ligand and a polar ligand are coordinated to the surface of a semiconductor nanoparticle. The ligands are composed of an organic group and a coordinating group, and in the aliphatic thiol ligand, the organic group is an aliphatic hydrocarbon group and the coordinating group is a mercapto group, the polar ligand includes a hydrophilic functional group in the organic group, and the hydrophilic functional group includes at least one selected from a hydroxy group, a carboxy group, a carbonyl group, an amino group, an ether bond, an ester bond and a siloxane bond, and the mass ratio of the aliphatic thiol ligand to the polar ligand ((aliphatic thiol ligand) / (polar ligand)) is 0.05-1.00.SELECTED DRAWING: None