251results 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.

A semiconductor nanoparticle aggregate that is an aggregate of core / shell type semiconductor nanoparticles including a core including In and P and a shell having one or more layers, in which a peak wavelength of an emission spectrum of the semiconductor nanoparticle aggregate is from 605 nm to 655 nm and a full width at half maximum of the emission spectrum is 43 nm or less. For each semiconductor nanoparticle, (1) an average value of a full width at half maximum of an emission spectrum is 28 nm or less, (2) a standard deviation of a peak wavelength of the emission spectrum is 10 nm or more and 30 nm or less, and (3) a standard deviation of the full width at half maximum of the emission spectrum is 12 nm or less.

Provided is a semiconductor nanoparticle complex composition and the like in which a semiconductor nanoparticle complex is dispersed at a high concentration and which has high fluorescence quantum yield. A semiconductor nanoparticle complex composition in which a semiconductor nanoparticle complex is dispersed in a dispersion medium, wherein: the semiconductor nanoparticle complex has a semiconductor nanoparticle and a ligand coordinated to the surface of the semiconductor nanoparticle; the ligand includes an organic group; the dispersion medium is a monomer or a prepolymer; the semiconductor nanoparticle complex composition further includes a crosslinking agent; and a mass fraction of the semiconductor nanoparticle in the semiconductor nanoparticle complex composition is 30% by mass or more.

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 discloses a method for resourceful treatment of heavy metal gypsum sludge and secondary zinc oxide smoke dust, and belongs to the technical field of solid waste resourceful utilization. Grinding and mixing the heavy metal gypsum sludge, the secondary zinc oxide smoke dust and a carbonaceous reducing agent, and roasting to obtain a roasted material containing ZnS and CaO; the roasted material is leached through hydrochloric acid, and zinc sulfide enriched slag and leachate are obtained; according to the method, the volatilization rates of toxic elements fluorine, chlorine and arsenic in the solid waste raw materials reach 97.22%, 97.28% and 98.41% respectively, the vulcanization rate of zinc reaches 96.89%, the recovery rates of zinc sulfide and calcium oxide can reach 98% or above, and the technical problems that a vulcanizing agent needs to be added in the vulcanization roasting process, and the recovery rate of valuable metal is low are solved.

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.

A method of manufacturing a semiconductor nanoparticle, the semiconductor nanoparticle manufactured therefrom, and an electronic device including the semiconductor nanoparticle. The method of manufacturing the semiconductor nanoparticle includes combining a first semiconductor nanocrystal that includes silver, a Group 13 element, and a chalcogen element, with a gallium precursor, a sulfur precursor, and a silver compound in a medium including an organic solvent; and heating the medium to a reaction temperature to obtain a crude solution including the semiconductor nanoparticles. The semiconductor nanoparticle includes silver, indium, gallium, and sulfur, and the size is greater than or equal to about 2 nm and less than or equal to about 50 nm.

The invention discloses a method for preparing high-purity zinc sulfide by using activated zinc oxide, which comprises the following specific steps: 1) adding activated zinc oxide into a dilute sulfuric acid solution, heating, stirring and filtering to prepare a zinc sulfate solution; (2) dropwise adding dilute sulphuric acid into the sodium sulfide solution, introducing N2 to pressurize, desulfurizing and dehydrating the generated mixed gas of hydrogen sulfide and N2, introducing the mixed gas into the bottom of the zinc sulfate solution to react while stirring, designing a container filled with zinc sulfate into three-stage series connection, after dropwise adding is finished, turning off N2, continuously stirring, after stirring is finished, standing to precipitate zinc, and then carrying out centrifugal suction filtration to obtain zinc sulfide; 3) adding deionized water to wash zinc sulfide to obtain a wet zinc sulfide product; 4, the wet zinc sulfide product is put into a vacuum drying furnace to be dried, then the dried zinc sulfide is crushed into powder through an N2 airflow crusher, and the industrial high-purity zinc sulphide is obtained.According to the method, the complicated process of zinc sulfate refining and sulfide purifying is omitted, and the generated zinc sulfide product is high in purity, few in impurity and extremely low in raw material loss.

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 provides a preparation method of an iron atom substituted-zinc sulfide negative electrode material for a potassium ion battery. The preparation method comprises the following steps: uniformly mixing ammonium lemon ferrite, L-cysteine and deionized water to form a solution A; uniformly mixing zinc nitrate hexahydrate and deionized water to form a solution B; uniformly mixing dimethylimidazole and deionized water to form a solution C; uniformly mixing the solution A, the solution B and the solution C according to a weight ratio of 1: 2: 2-1.5: 2: 2 to obtain a precursor solution, centrifuging the precursor solution, and collecting precursor powder; the precursor powder is annealed in an inert atmosphere to obtain the iron atom substituted-zinc sulfide negative electrode material, and when the iron atom substituted-zinc sulfide negative electrode material is applied to the negative electrode material of the potassium ion battery, the specific capacity can still be kept at 583.9 mAh g <-1 > after 240 cycles under the current density of 100 mAg <-1 >. The invention also provides an iron atom substituted-zinc sulfide negative electrode material and a potassium ion battery.

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 metal sulfide and application thereof, and relates to the technical field of sulfides. The metal sulfide disclosed by the invention is a zinc sulfide material, and the zinc sulfide material meets the following relational expression: span * ((I1 + I3) / I2) is more than or equal to 0.2 and less than or equal to 6.3; wherein span is the particle size distribution span value of the zinc sulfide material; i1, I2 and I3 respectively represent the peak intensities of diffraction peaks at the positions of 26.7 to 27.1 degrees, 28.4 to 28.8 degrees and 30.4 to 30.8 degrees in an XRD (X-Ray Diffraction) spectrum obtained by performing XRD measurement on the zinc sulfide material. The metal sulfide disclosed by the invention is applied to the friction material, so that the friction coefficient change rate of the friction material in extreme environments such as low temperature and high temperature is small, and the wear rate is relatively low.

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.

To provide a method for producing a quantum dot capable of enhancing EQE, and the quantum dot.SOLUTION: The quantum dot of the present invention is a core-shell structure quantum dot. The shell has an intermediate layer and an outermost layer, the intermediate layer is located between the core and the outermost layer, and the intermediate layer contains ZnSeS and a halogen element. Preferably, at least, the external quantum efficiency is 7% or more or the fluorescence quantum yield is 70% or more.SELECTED DRAWING: Figure 4

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.