169 results about "Zinc sulfide" patented technology

The invention relates to a dual-waveband medium-long wave infrared optical filter based on a germanium / zinc sulfide asymmetric film system and a preparation method of the dual-waveband medium-long wave infrared optical filter. The dual-waveband medium-long wave infrared optical filter comprises a front film system, a substrate and a back film system, the front film system and the back film system are formed by alternately overlapping germanium layers and zinc sulfide film layers; the average transmittance of the infrared optical filter in the wave band of 3800 nm to 4800 nm and the wave band of 8000 nm to 10000 nm is not lower than 91%. According to the two-waveband medium-long wave infrared optical filter disclosed by the invention, 3800 to 4800 nm amp is realized; according to the infrared filtering window, the light energy of medium waves and long waves of 8000-10000 nm is improved, the luminous flux of other wavebands is well inhibited, the technical problem of the infrared filtering window in some special infrared spectrum detection systems is solved, and a new scheme is provided for infrared application.

The invention relates to a wide-temperature-range stable dual-band infrared optical filter for an extreme environment and a preparation method thereof. The wide-temperature-range stable dual-band infrared optical filter comprises a front film system, a substrate and a back film system, the front film system and the back film system are formed by alternately overlapping germanium layers and zinc sulfide film layers; the drift distance of the central wavelength of the passband of the infrared optical filter is less than 0.05% within the temperature range of-120 DEG C to + 85 DEG C. According to the invention, the internal stress of the film layer is obviously reduced through the optimized film system design, so that the excellent stability of the optical performance in an extreme temperature environment is realized, the technical problem that some special infrared spectrum detection systems work in a wide temperature range is solved, and a reliable solution is provided for high-end aerospace infrared application.

The invention discloses an electrolyte for improving the cycling stability of a zinc-sulfur battery and application of the electrolyte in a photoelectric storage integrated battery. The electrolyte comprises a solvent, an additive and zinc salt, the additive is iodide, and the iodide comprises iodine negative ions and positive ions or polar functional groups. The functional additive is added into the electrolyte, positive ions inhibit dendritic crystals and side reactions of zinc, and iodine negative ions accelerate reversible change between sulfur and zinc sulfide, so that the cycling stability of the zinc-sulfur battery is improved. A zinc-sulfur battery with high specific capacity and long cycle life is integrated with a solar battery, so that the photoelectric storage integrated battery with high overall conversion efficiency, high specific capacity and long cycle life is prepared.

A hydrocarbon gas detection system including a longwave infrared camera, a spectral filter, and a computation unit. The spectral filter is disposed in the light path of the camera sensor. The spectral filter is made of a material selected from the group consisting of calcium fluoride, zinc sulfide, magnesium fluoride, and silicon. The computation unit is arranged to process image data of the longwave infrared camera for the hydrocarbon gas detection.

The invention discloses a preparation method and application of a CuCo2S4 nanotube cluster / Zn3In2S6 nanosheet composite photocatalyst in the field of photocatalytic materials, the catalyst takes a cobalt sulfide copper nanotube cluster as a substrate, an indium zinc sulfide nanosheet layer is loaded on the surface, and a unique composite structure is formed. The preparation method comprises the following steps: preparing a CuCo nanotube cluster precursor through a hydrothermal method, and further preparing the CuCo2S4 nanotube cluster / Zn3In2S6 nanosheet composite photocatalyst through vulcanization and an oil bath method. The preparation method is simple, raw materials are easy to obtain, conditions are mild, control is easy, and the method is suitable for large-scale production. The prepared catalyst has high specific surface area and good dispersibility, also shows high carrier separation efficiency and strong light absorption performance, and can significantly improve the efficiency of photocatalytic decomposition of water to produce hydrogen and the efficiency of heavy metal removal under visible light.

The invention belongs to the technical field of photovoltaic packaging materials, and provides a light anti-reflection packaging adhesive film and a preparation method and application thereof. The light anti-reflection packaging adhesive film is prepared from 100 parts of matrix resin, 1 to 15 parts of light anti-reflection master batch, 0.4 to 1.5 parts of cross-linking agent, 0.8 to 3.0 parts of assistant cross-linking agent and 0.3 to 1.0 part of silane coupling agent, the light anti-reflection master batch comprises 100 parts of matrix resin, 0.5-10 parts of an anti-reflection nano material and 0.5-10 parts of a surfactant; the matrix resin is at least one of EVA (ethylene vinyl acetate) resin, POE (polyolefin elastomer) resin and PVB (polyvinyl butyral) resin; the anti-reflection nanometer material is a porous nanometer material, the porosity is 20-70%, the aperture is 2-35 nm, and the anti-reflection nanometer material is selected from one or more of porous nanometer silicon dioxide, porous silicon dioxide loaded zinc oxide, zinc sulfide, zinc oxide, titanium dioxide, zirconium oxide, aluminum oxide and organic silicon resin microspheres. According to the light anti-reflection packaging adhesive film, the light transmittance and the assembly efficiency can be further improved.

The invention relates to a large-size wide-spectrum infrared color separation film with controllable surface precision and a manufacturing method thereof, the color separation film takes a silicon plain film as a substrate, a color separation film is designed on a light incident surface of the silicon substrate, germanium and zinc sulfide are used as high and low refractive index materials of a reflecting film stack, ytterbium fluoride is added in a matching layer, the film thickness ratio is regulated and controlled, and a thin film deposition process is optimized. The surface type change caused by the film layer is reduced; a thickness compensation film layer is added when the antireflection film is designed on the light transmission surface of the silicon substrate, so that the stress of the antireflection film and the stress of the color separation film are mutually counteracted, and the surface type is controlled. Appropriate substrate temperature, deposition rate and local film layer ion auxiliary deposition are adopted in the preparation of the color separation film, and the environmental reliability is good. The prepared large-size color separation sheet is controllable in surface type, the surface type precision RMS of the color separation surface is 0.028 lambda, the surface type precision RMS of the anti-reflection surface is 0.042 lambda, the large-size color separation sheet can highly reflect a broadband of 2-3.95 microns and highly transmit a broadband of 4.2-5.1 microns, and the large-size color separation sheet can be used for spectrum color separation of a large-view-field infrared optical system.

This invention discloses an S-type heterojunction photocatalyst composed of sulfur-defect-containing indium zinc sulfide and tungsten oxide, its preparation method, and its application. Specifically, this invention involves preparing WO3 nanosheets via a hydrothermal method, then loading them onto the surface of Zn3In2S6 using a solvothermal method, followed by introducing sulfur defects through phototreatment to obtain the S-type heterojunction photocatalyst WO3 / V. S -Zn3In2S6. The S-type heterojunction photocatalyst WO3 / V obtained in this invention. S -Zn3In2S6 exhibits excellent activity, enhanced CH4 selectivity, and good stability in the photocatalytic CO2 reduction reaction. Its preparation method is simple and easy, and it has good application prospects in the photocatalytic CO2 reduction reaction.

The application discloses application of a combined inhibitor in associated gold-silver-lead-zinc sulfide ore flotation separation, wherein the combined inhibitor is a combination of zinc sulfate and methionine, and the mass ratio of the two combined is 2:1; the combined inhibitor is used to realize associated gold-silver-low-copper-lead-zinc polymetallic sulfide ore flotation separation in a low-alkali environment, has a good separation effect, high concentrate grade, effectively reduces the zinc content of lead concentrate, improves the gold and silver recovery rate in the lead concentrate, and has important significance for improving the quality and efficiency of associated gold-silver-low-copper-lead-zinc polymetallic sulfide ore flotation separation. In addition, the methionine in the combined inhibitor is a small-molecule organic substance, is non-toxic and non-polluting, and is easy to degrade, thereby avoiding the problems of traditional inhibitors, such as toxicity, environmental unfriendliness and human body unfriendliness. The combined inhibitor has small dosage, stable effect, and good process application prospect.

The application discloses a beneficiation method for complexly-embedded high-sulfur-content lead-zinc sulfide ore, which comprises one-stage rough separation, three-stage cleaning and three-stage scavenging; a zinc flotation operation comprises one-stage rough separation, three-stage cleaning and three-stage scavenging; a sulfur flotation operation comprises one-stage rough separation, one-stage cleaning and one-stage scavenging; a sulfur concentrate dezincing operation comprises one-stage rough separation, one-stage cleaning and one-stage scavenging, calcium oxide is added in the one-stage cleaning process, a zinc collecting agent is added in the one-stage scavenging process, and tailings after the one-stage cleaning and concentrate after the one-stage scavenging are returned to the one-stage rough separation of the sulfur concentrate dezincing operation. The column machine is combined to improve the recovery rate of useful minerals, the flotation column is used for scavenging to improve the recovery rate of fine particles, the sulfur concentrate is subjected to the dezincing operation, and the dezincing product is returned to the zinc rough separation operation, so that the recovery rate of zinc minerals is improved, and through the column machine combined with the middling regrinding mode, the recovery rates of lead and zinc in the complexly-embedded high-sulfur-content lead-zinc sulfide ore are improved.

The invention belongs to the technical field of cementing technologies and adhesives, and discloses a low-stress cementing sealing structure of a spherical zinc sulfide window, which is used for realizing butt joint of an aluminum alloy outer cover (2) and the spherical zinc sulfide window (1), and cementing sealing of the lower part of the outer wall of the spherical zinc sulfide window (1) and the upper part of the inner wall of the aluminum alloy outer cover (2). After the sealing assembly is used for sealing the zinc sulfide window, the overall leakage rate of the window (the sealing assembly is placed in a metal sealing container, a standard leakage opening is formed in the container, and the leakage rate is tested at the leakage opening through a helium mass spectrometer) is reduced to 10 <-8 > Pam < 3 > / s from 10 <-7 > Pam < 3 > / s sealed through traditional silicon rubber, the order of magnitude is reduced, and the sealing qualification rate is increased to 98% or above from 80%; compared with traditional epoxy resin sealing, the risk that the window deforms and even cracks is greatly avoided.

The invention belongs to the technical field of inorganic materials, and discloses a preparation process of a zinc sulfide sintered body, which comprises the following steps: taking 90% by mass of zinc sulfide powder, 0.1% by mass of epoxy resin and 9.9% by mass of deionized water, and mixing for 80-100 minutes at the rotating speed of 300-400 r / min and the temperature of 40-50 DEG C; maintaining the pressure of 20-25 MPa for 5-7 minutes to prepare a first green body, crushing the first green body to 325-330 meshes, and presintering the first green body at 980-1000 DEG C for 10-11 hours; and after pre-sintering, adding the same amount of epoxy resin and deionized water for secondary mixing, repeatedly briquetting to prepare a second green body, drying at 380-400 DEG C for 12-12.5 hours, performing secondary sintering at 980-1000 DEG C for 10-11 hours, cooling, and sealing and storing. According to the process, the energy consumption can be reduced, the sintering time is shortened, the production efficiency is improved, the zinc sulfide sintered body which is uniform in structure, stable in performance and free of impurities is prepared, and the process is suitable for the fields of anti-counterfeiting films, infrared optical elements and the like.

The application belongs to the field of photocatalytic water decomposition, and relates to a hollow indium zinc sulfide composite catalyst material loaded with double cocatalysts and a preparation method and application thereof. The material is a composite material of double metal chalcogenide indium zinc sulfide and MnO2 and Ti3C2, the MnO2 has a hollow spherical structure, the indium zinc sulfide has a two-dimensional sheet structure, the indium zinc sulfide is coated on the outer surface of the MnO2 to form a composite spherical structure, and the Ti3C2 is attached to the surface of the composite spherical structure. The catalyst material not only has a higher specific surface area to provide more surface active sites, but also can enhance the refraction and reflection of light, thereby improving the utilization efficiency of light. The MnO2 and the Ti3C2 can be used as hole-type and electron-type cocatalysts respectively, and the unique carrier transport path thereof promotes the separation and transfer of photo-generated carriers, thereby enhancing the photocatalytic hydrogen production and benzyl alcohol oxidation performance of the material.

A hot-pressing sintering method for an optical zinc sulfide rectifier includes the following steps: zinc sulfide powder pretreatment; loading: mixing the pretreated zinc sulfide powder with a sintering additive with a melting point lower than zinc sulfide and loading it into a mold with a thermal expansion coefficient smaller than that of polycrystalline zinc sulfide, placing it in a hot press furnace, closing the furnace, the weight of the mixed powder loaded into the mold exceeding the raw material weight required for the ideal product of the mold, the mold being pre-coated with a release agent; starting up, when the absolute pressure drops below 500 Pa, starting the heating, while continuing to evacuate to no more than 5 Pa; the first stage heating at 5-10℃ / min to the second stage heating at 300-400℃ / min. 00℃ and hold for 1-4 hours; S4, the vacuum pressure at the second stage target temperature of 300-400℃ should not exceed 5Pa; 10 minutes before the end of the second stage, pre-pressurize in a cold state to 40-60% of the process pressure; in the third stage, continue to raise the temperature to 900-1000℃ at 5-10℃ / min, hold for 30-60 minutes after reaching the temperature, raise the process pressure to 20-40MPa in 30 minutes, and finally hold for 60-120 minutes; after the holding and pressure holding are completed, release the pressure, turn off the heating, let it cool naturally, cool with the furnace to room temperature, and then remove from the furnace.

Artificial flowers and bunches of flowers that have self-glowing properties include a flower portion and optionally one or more stems and leaves. At least the flower portion includes a self-glowing material, which includes phosphorescent compounds, such as strontium aluminate or zinc sulfide, optionally doped with rare earth elements to enhance glow intensity and duration. The luminescent material may be embedded within the base structure or applied as a surface coating or both, and is bound using a suitable medium such as acrylic or epoxy resin. Optional integration of conventional lighting elements, such as LEDs, is also contemplated

The invention relates to a nano composite microsphere lubricating material and a preparation method thereof, the material is a nano composite microsphere with a three-layer composite core-shell structure, the core is a zinc sulfide nanosphere, the middle layer is a molybdenum disulfide lubricating layer, and the shell is a polyurethane coating layer; the outer diameter of the nano composite microsphere is 90-150nm, the diameter of the zinc sulfide nano sphere is 20-40nm, the thickness of the middle layer is 25-35nm, and the thickness of the shell is 10-20nm. When the material is added into lubricating grease as a solid lubricating material, nanoscale balls can roll between friction pairs, sliding friction is partially converted into rolling friction, and the friction coefficient is effectively reduced; meanwhile, the released molybdenum disulfide and zinc sulfide are spread on the metal surface together to form a layer of firm composite solid lubricating film with low shear strength, so that the extreme pressure anti-wear property is improved; in addition, the polyurethane shell can block oxygen and delay oxidation of the lubricating grease while improving the dispersity.

The application relates to the technical field of semiconductor nanomaterials, and discloses an environment-friendly zinc sulfide nanoparticle as well as a preparation method and application of the zinc sulfide nanoparticle. The preparation method comprises the following steps: (1) activating Aspergillus oryzae spores, performing liquid fermentation, filtering the liquid fermentation product, washing, collecting solid substances, and obtaining biomass; (2) culturing the biomass in the step (1) in a ZnSO4.7H2O aqueous solution to obtain an Aspergillus oryzae liquid solution containing zinc sulfide nanoparticles; (3) drying the liquid solution obtained in the step (2) to obtain Aspergillus oryzae precipitate containing zinc sulfide nanoparticles; and (4) heating the precipitate in the step (3) at 400-450 DEG C for 4-6 h to obtain zinc sulfide nanoparticles. The application endows the zinc sulfide nanoparticles with excellent biocompatibility, expands the application of the zinc sulfide nanoparticles in the fields of biomedicine, chemical sensors, solar cells and light-emitting diodes, and provides a reference for the environment-friendly and batch production of the zinc sulfide nanoparticles.

This invention belongs to the field of photocatalytic materials technology, specifically relating to a zinc sulfide-based single-atom catalyst, its preparation method, and its application. The preparation method of the zinc sulfide-based single-atom catalyst includes the following steps: dissolving zinc salt, indium salt, and thioacetamide in an aqueous glycerol solution and carrying out a hydrothermal reaction to obtain zinc sulfide nanosheets; dispersing the zinc sulfide nanosheets in a mixed solution of water and methanol, adding a metal salt solution dropwise, and irradiating with light to obtain the zinc sulfide-based single-atom catalyst. The zinc sulfide-based single-atom catalyst of this invention can effectively separate photogenerated carriers and is also beneficial for the adsorption and activation of oxygen, generating more reactive oxygen species, thereby effectively improving the conversion rate of HMF and the selectivity of the target product DFF.

The invention discloses a preparation method of a biochar-zinc sulfide-tungsten sulfide heterojunction composite material, and the scheme comprises the following steps: S1, dissolving sodium tungstate, hydroxylamine hydrochloride, sodium hydroxide, thiourea and zinc chloride in deionized water, and uniformly stirring to obtain a light yellow transparent reaction solution; s2, biological carbon is prepared, the reaction liquid and the biological carbon are mixed in a reaction kettle and then subjected to a hydrothermal reaction for 8-48 h at the constant temperature, and the constant temperature is any one of the temperature values ranging from 180 DEG C to 240 DEG C; s3, filtering, cleaning and drying a product obtained in the step S2 to obtain a heterojunction composite material precursor; s4, the heterojunction composite material precursor is subjected to calcination treatment in the inert gas atmosphere, the biochar-zinc sulfide-tungsten sulfide heterojunction composite material is obtained, and the calcination temperature ranges from 850 DEG C to 950 DEG C.

The invention relates to a flexible perovskite solar cell and a preparation method thereof. The flexible perovskite solar cell comprises a flexible substrate, a transparent conductive layer, an electron transport layer, a quantum dot layer, a perovskite layer, a hole transport layer and an electrode which are stacked in sequence, the material of the electron transport layer comprises tin dioxide; and the material of the quantum dot layer comprises zinc sulfide quantum dots. According to the flexible perovskite solar cell, the tin dioxide-based electron transport layer is used, and high conversion efficiency can be achieved.

The invention relates to the field of reversed-phase colloid dispersion systems, nanocrystals and coatings, in particular to a single-layer zinc cadmium sulfide nanocrystal coating and a preparation method thereof. The preparation method comprises the following steps: firstly, mixing a polymer aqueous solution, a metal salt aqueous solution and a solvent, and ultrasonically crushing to form a reversed-phase colloid containing nanocrystalline precursor metal ions; and spin-coating the obtained reversed-phase colloid on a quartz glass sheet for natural air drying, and irradiating by infrared light to form a coating film with the surface containing the nanocrystalline precursor. Placing the coating film in a polymer aqueous solution, carrying out ultrasonic cleaning, and then carrying out ultrasonic cleaning with the same polymer aqueous solution again; finishing the coating film containing the surface precursor from which the free metal ions are removed; finally, the coating film is placed in a sintering furnace with the temperature controlled by a program to be heated and sintered, and the single-layer zinc cadmium sulfide nanocrystalline coating film can be obtained. The coating film is prepared by adopting the reverse phase colloid, cadmium / zinc metal ions can be effectively chelated by using sulfydryl of a sulfydryl polyethylene glycol-block polycaprolactone functional group, and free metal ions are few.

According to the light-storing cement-based material and the preparation method thereof, through the synergistic effect of multiple light-emitting systems of the zinc sulfide particles, the strontium aluminate and the waste luminous ceramic powder, the light-emitting performance of high brightness and long afterglow is achieved, and the afterglow time can reach 12 hours or above; by adding the Fe3O4 / C composite nanoparticles, the light absorption efficiency and the energy conversion rate of the material are remarkably improved, and the luminous intensity is improved by more than 2 times compared with that of the traditional light storage cement; meanwhile, a three-dimensional light-transmitting network constructed by the light-transmitting glass aggregate and the organic transparent fiber tubes not only ensures the structural strength of the material, but also realizes efficient transmission and uniform luminescence of light; in addition, waste noctilucent ceramic powder is used as a raw material, so that the production cost is reduced, resource recycling is realized, remarkable environmental protection benefits are achieved, and the light storage cement can be widely applied to the fields of building decoration, road marking, emergency lighting and the like.

The invention discloses a multi-joint hybrid nano-generator, which comprises a multi-joint reciprocating friction nano-generator and a radial fluctuating electromagnetic generator, and the multi-joint reciprocating friction nano-generator and the radial fluctuating electromagnetic generator are connected through a multi-joint connecting rod. The multi-joint reciprocating friction nanometer generator comprises a shell, a sliding rod and a sliding groove which are arranged at the bottom of the shell, a packaging cover arranged at the top of the shell and multiple layers of TENG units connected in parallel, the TENG units are arranged in the shell, and the sliding rod slides along the sliding groove; the radial fluctuating electromagnetic generator comprises a fixed rod, a copper coil wound on the fixed rod and a magnet fixed on the multi-joint connecting rod, and the fixed rod is arranged on the packaging cover. According to the multi-joint hybrid nano generator provided by the invention, the contact frequency of the friction layer is improved, and the silica gel / zinc sulfide and glass fiber friction layer is matched, so that the output of the friction nano generator is greatly improved, and the wave energy is efficiently collected.

The invention relates to the technical field of luminescent materials, discloses a mechanoluminescent material as well as a preparation method and application thereof, and aims to solve the problems of difficulty in controlling the valence state of copper ions, complexity in treating flux residues and difficulty in balancing process parameters in the preparation of the existing mechanoluminescent material. The preparation method of the mechanoluminescent material comprises the following steps: synthesizing a copper-doped zinc sulfide nanocrystal precursor by adopting a wet chemical method, and carrying out annealing treatment by sublimed sulfur in-situ generation of a sulfur-rich reducing atmosphere in combination with a non-traditional fluxing agent. By adopting the technical scheme, the valence state of the copper ions can be accurately controlled, the post-treatment process is simplified, and the luminous efficiency, the stability and the batch consistency are improved.

The invention discloses a high-copper-sulfur low-zinc mineral processing technology with non-uniform disseminated particle size, which comprises the following steps: firstly, coarsely grinding ores until the ores with the particle size of-0.074 mm account for 62-63%, carrying out copper-sulfur bulk flotation, and preferentially recovering high-grade copper concentrate 1 (the copper content is more than or equal to 19.32%) and sulfur concentrate (the sulfur content is more than or equal to 46.78%); then copper-zinc bulk flotation is carried out on the copper-sulfur tailings, after obtained rough concentrate is classified through a hydrocyclone, settled sand and dense underflow are combined and ground till-0.074 mm accounts for 78%-80%, and copper concentrate 2 (the copper content is larger than or equal to 20.12%) and zinc concentrate 1 (the zinc content is larger than or equal to 45.87%) are obtained through copper-zinc separation, copper concentration and zinc concentration; and finally, the mixed tailings are graded, fine fraction is directly separated and recycled through a flotation column, coarse fraction is subjected to superfine grinding till-0.044 mm accounts for 90%-93%, then a flotation machine is adopted for re-separation, finally, the copper content of the tailings is reduced to 0.075%-0.083%, the zinc content of the tailings is reduced to 0.082%-0.088%, and efficient separation with the copper recovery rate being 93.78%-94.62% and the zinc recovery rate being 60.21%-62.37% is achieved.

The invention relates to the field of inorganic non-metallic materials, and discloses a high-brightness long-afterglow luminescent ceramic material and a preparation method thereof.The material is composed of calcium fluoride, zinc sulfide, strontium sulfide, kaolin, quartz, albite, titanium dioxide, barium oxide, iron oxide and phosphorus pentoxide, a SiO2-Y2O3 crystal boundary regulation phase is introduced, the luminous efficiency and trap level distribution are optimized, and the luminous efficiency is improved. The preparation method comprises the steps of raw material ball milling, pre-sintering, cold press molding, three-section gradient hot pressed sintering, reduction annealing and polishing, and high densification and crystal grain controllable growth are achieved through staged temperature control pressurization. The initial brightness of the obtained material is greater than or equal to 800cd / m, the afterglow is greater than or equal to 11 hours, and the standard deviation of luminescence uniformity is lt; and the process is compatible with a conventional production line, the energy consumption is low, the cost is controllable, and the method is suitable for the fields of emergency indication, building decoration, intelligent wearing and the like.

The invention discloses a plasticity constitutive parameter inversion method for a zinc sulfide infrared optical brittle material, and belongs to the technical field of material mechanical property characterization. According to the method, a zinc sulfide material nanoindentation simulation model is constructed, a nanoindentation experiment is carried out, meanwhile, an Oliver-Pharr method and a Johnson-Cook constitutive equation are adopted to obtain actual material hardness, elastic modulus and plasticity parameters of zinc sulfide to serve as input material parameters, and an automatic simulation experiment is carried out; the method comprises the following steps: acquiring a simulation displacement-load curve under different constitutive parameter combinations, performing prediction optimization on the displacement-load curve by using a prediction network to obtain a Pareto frontier solution, and constructing an inversion model by using an entropy weight method to obtain an optimal solution in a Pareto frontier solution set. According to the research, accurate characterization of the plasticity constitutive behavior of the zinc sulfide infrared optical brittle material is realized, and reliable method support can be provided for constitutive parameter identification and intelligent modeling of other brittle polycrystalline materials.

The invention belongs to the technical field of photocatalysis, and provides a preparation method and application of a composite photocatalyst for photodegradation of lignin, the preparation method comprises synthesis of indium zinc sulfide, synthesis of bismuth tungstate and preparation of the composite photocatalyst ZnIn2S4 / Bi2WO6, and the composite photocatalyst is used for photodegradation of lignin in water. According to the present invention, the precursor indium zinc sulfide and the bismuth tungstate are synthesized through the hydrothermal method, and according to the morphology, the different response to light and the inherent characteristics of the indium zinc sulfide and the bismuth tungstate, the ZnIn2S4 / Bi2WO6 Z-type heterojunction is constructed from the indium zinc sulfide and the bismuth tungstate through the physical grinding in-situ method, and the composite photocatalyst has characteristics of more active sites, good light absorption ability, good charge transfer efficiency, and good photocatalytic activity. And the capability of photocatalytic degradation of lignin under visible light is obviously improved.

The application discloses a color halogen-free flame-retardant nylon composite material capable of being marked by ultraviolet laser and a preparation method and application thereof, and relates to laser marking of polymer materials. The color nylon composite material comprises 60-75 parts of nylon resin, 0-40 parts of glass fiber, 12-20 parts of halogen-free flame retardant, 0.05-0.3 parts of laser sensitive agent and 0.1-1 part of color pigment. The laser sensitive agent is zinc sulfide and / or zinc oxide. The color nylon composite material is added with specific laser sensitive agent, which generates electrons and holes under the excitation of ultraviolet light, can promote the decomposition reaction of the material and improve the laser marking effect, so that white marks are marked on the color nylon material by ultraviolet laser marking, the color difference before and after marking is obvious, and the color nylon composite material has high definition and contrast.

The application relates to a preparation method of a multi-interface coupling indium phosphide quantum dot and an electroluminescent diode, and belongs to the field of semiconductor light emission, display and nanotechnology. In the application, tri (dimethylamino) phosphine is reacted with an indium halide oleylamine solvent at 160 DEG C to 200 DEG C to generate an indium phosphide nanocrystal core, then the temperature is increased to 300 DEG C to 350 DEG C, zinc oleate, tri-n-octylphosphine-selenium and tri-n-octylphosphine-sulfur are gradually injected, and a polar solvent and a crosslinking agent are injected; 3-5 quantum dots are high-temperature fused through interfaces to realize interface coupling, and a multi-interface coupling core-shell indium phosphide / zinc selenide / zinc sulfide quantum dot is obtained. The quantum dot has a unique coupling structure, can effectively inhibit photo-generated exciton Auger recombination, improve the charge transport performance of a quantum dot film, has higher stability and a higher fluorescence quantum yield, and can be used for preparing a high-efficiency electroluminescent diode with high tube efficiency and good working stability.