110results 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 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 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.

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 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 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.

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.

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.

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.

The present invention discloses a drying device for zinc sulfide production, which relates to the technical field of zinc sulfide production, and includes: a dryer housing, a processing mechanism is arranged inside the dryer housing, the processing mechanism includes a stirring assembly and a rotating cylinder assembly, the stirring assembly includes: a stirring base rod, a plurality of stirring support rods are arranged on the side surface of the stirring base rod, a movable trigger top block is arranged on one side surface of the stirring support rod, an elastic block is arranged on the side surface of the trigger top block close to the stirring support rod, the rotating cylinder assembly includes: an inner cylinder body, the inner cylinder body is located inside the heating cavity, and a plurality of air flow rings are arranged on the surface of the inner cylinder body. In this solution, by setting the stirring assembly and the rotating cylinder assembly, it is possible to break large filter cakes during the stirring process, improve the fragmentation degree of the material, accelerate the drying speed and improve the drying quality.

The invention discloses high-temperature-resistant zinc sulfide, a polymer composition and a preparation method and application of the high-temperature-resistant zinc sulfide, the high-temperature-resistant zinc sulfide comprises the following components in parts by weight: a zinc sulfide matrix, the surface of the zinc sulfide matrix is provided with a silicon dioxide-based coating layer, the content of the silicon dioxide-based coating layer is 4.0-8.0 wt%, and the content of the polymer composition is 0.1-0.5 wt%. The average particle size of the zinc sulfide matrix is 20 nm to 1000 nm. The application problem that current zinc sulfide is not resistant to high temperature can be well solved.

This invention provides a method for preparing axially periodic core-shell heterojunction nanostructures. First, Al-M nanowires with endpoints are obtained using a catalytic growth method. Then, the endpoints A1 of the Al-M nanowires are removed using alkylphosphine to obtain pure colloidal M nanowires. Next, a silver source solution is mixed with a dispersion of the pure colloidal M nanowires for an ion exchange reaction to obtain M@A2 uniform core-shell heterojunction nanowires. Finally, the M@A2 core-shell nanowires are dispersed in a solvent and subjected to heat treatment. The Rayleigh fluid instability in inorganic solids causes deformation, leading to structural evolution of the uniform core-shell heterojunction nanowires and the formation of axially periodic core-shell heterojunctions. Compared with existing technologies, this invention is the first to utilize the principle of Rayleigh fluid instability in inorganic solids to precisely synthesize axially periodic nanostructures with adjustable size and periodicity, opening a new avenue for the design and synthesis of axially periodic nanostructures.

The invention provides a preparation method of a heterogeneous transition metal chalcogenide material. The preparation method comprises a heating step, a plasma forming step and a deposition step. In the heating step, the chalcogenide solid is heated at a heating temperature to form a chalcogenide gas. In the plasma forming step, reaction gas is introduced to assist the chalcogenide gas in forming chalcogenide plasma. In the deposition step, a substrate is arranged adjacent to the chalcogenide plasma, the substrate comprises a base material and a plating layer, and the chalcogenide plasma and the plating layer are subjected to a deposition reaction at a reaction temperature and a reaction pressure to form the heterogeneous transition metal chalcogenide material with excellent optical characteristics and a surface-enhanced Raman scattering effect. Therefore, the heterogeneous transition metal chalcogenide material can be applied to a surface-enhanced Raman scattering sensor.

The invention discloses a manganese-doped wide-band-gap colloidal quantum dot and TiO2 heterojunction photoelectrode and preparation and application thereof, and belongs to the technical field of semiconductor photoelectric materials and devices. According to the photoelectrode, conductive glass serves as a substrate, a TiO2 barrier layer, a TiO2 transparent layer, a scattering layer, a Mn-doped wide-band-gap colloid quantum dot layer and a surface passivation layer are sequentially constructed, and the barrier layer inhibits charge recombination; the transparent layer and the scattering layer synergistically enhance light absorption; the quantum dot layer can broaden spectral response, remarkably prolong the service life of current carriers and promote effective separation of photo-generated excitons; the passivation layer is used for reducing the light corrosion influence; the preparation method comprises the steps of TiO2 multilayer photoelectrode preparation, quantum dot synthesis and electrophoretic deposition and passivation treatment. The photoelectrode has excellent performance in hydrogen production by photoelectrochemical decomposition of water, and the system does not contain heavy metals; compared with an undoped system, the saturation photocurrent density and the hydrogen production rate are remarkably improved, the electron life is prolonged, and a reliable technical path is provided for large-scale preparation and application in the hydrogen production field.

The invention relates to the field of sulfide technology, in particular to a metal sulfide and its application as well as a metal sulfide-containing resin composition, wherein the metal sulfide is a cobalt- and iron-containing zinc sulfide material, wherein the mass fraction of the cobalt element in the zinc sulfide material is 200 to 500 ppm, and the mass fraction of the iron element in the zinc sulfide material is 3 to 200 ppm, wherein the ratio of the zinc content in the zinc sulfide material to the pH value corresponds to the relationship of 1.2 ≤ pH-2.5×lg(WZn) ≤ 3.3, where pH represents a pH value of the zinc sulfide material, and WZn represents a zinc mass fraction in the zinc sulfide material.With this type of construction, the metal sulfide-containing resin composition exhibits high color stability and a low rate of change in whiteness after long-term storage in water, by simultaneously regulating the cobalt and iron content while appropriately limiting the ratio of the zinc content to the pH value of the metal sulfide.

Disclosed is a quantum dot production method and quantum dot that can improve EQE. The quantum dot production method of the present application is characterized by comprising a step of producing a core and a step of coating a shell on the surface of the core. The step of coating the shell is performed by mixing an acidic compound and a zinc halide compound in a shell material. The step of coating the shell is preferably divided into a first half and a second half. The shell is coated in the first half using a shell material mixed with the acidic compound but not mixed with the zinc halide compound, and the shell is coated in the second half using a shell material mixed with both the acidic compound and the zinc halide compound.

To provide a manufacturing method etc., of metal sulfide that does not require high temperature and can be manufactured under atmospheric environment.SOLUTION: A manufacturing method of metal sulfide comprises an electrolysis step of bringing an anode (11) comprising a metal element M and a cathode (12) into contact with an electrolytic solution (20) comprising a sulfur source and energizing the anode (11) and the cathode (12) to precipitate metal sulfide comprising the metal element M at least one of in the electrolytic solution (20) and on the surface of the cathode (12).SELECTED DRAWING: Figure 1

The application discloses lignin-based carbon-supported zinc sulfide and a preparation method and application thereof, and comprises the following steps: (1) dissolving a zinc salt in dimethyl sulfoxide, adding lignin and a nitrogen source, and stirring and heating until completely dissolved to obtain a precursor solution; (2) carbonizing the precursor solution under a protective gas atmosphere, wherein the carbonization temperature is 500-1200 DEG C, and then washing, drying and obtaining lignin-based carbon-supported zinc sulfide. The prepared lignin-based carbon-supported zinc sulfide material has a high specific surface area and a hierarchical porous structure, and has a high specific capacity, good rate performance and cycle stability as a negative electrode of a sodium ion battery. The method has the advantages of simple operation, low cost and the like.

This application provides a method for preparing nano-zinc sulfide powder and its product, comprising: loading sulfur powder and zinc powder into a first crucible and a second crucible respectively; placing the first crucible and the second crucible into different furnace bodies of a chemical vapor deposition (CVD) furnace; placing a ceramic deposition chamber into the deposition zone furnace body of the CVD furnace; evacuating the CVD furnace to a vacuum level less than or equal to 400 Pa; at room temperature, heating the furnace body containing the first crucible to 300-350 °C at a rate of 5-10 °C / min, heating the furnace body containing the second crucible to 550-650 °C at a rate of 20-30 °C / min, and heating the deposition zone furnace body to 580-680 °C at a rate of 25-35 °C / min; after each furnace body has been heated to the predetermined temperature and held for 8-10 hours, introducing sulfur-carrying gas into the first crucible and zinc-carrying gas into the second crucible; after the reaction is completed, directly turning off the power supply to each furnace body, cooling down, and then opening the furnace to collect the nano-zinc sulfide powder. The obtained nano zinc sulfide powder has high purity, white appearance, and uniform size.

The invention discloses a high-efficiency and low-cost sulfide nanomaterial and a preparation method thereof. The nanomaterial is zinc sulfide or cadmium sulfide. The preparation method of the nanomaterial comprises the following steps: adding 0.001-0.002g of a surfactant to 20-50ml of water with a live bacteria content of 10,000-20,000 / ml, heating the mixture to 80-90°C, cooling the mixture to room temperature, adding 0.02-0.027g of a sulfur source, and stirring and mixing the mixture to obtain a material A; dissolving 0.1-0.3g of a zinc source or a sulfide source in 30-50ml of an aqueous solution containing 0.001-0.002g of a surfactant, and then adding 1-2mg of trypsin, stirring and mixing the mixture to obtain a material B; adding 2-4ml of octanol to the material A, mixing the mixture to obtain a mixed solution, and then allowing the mixture to stand, and dropwise adding 10ml of the mixed solution. 0.2 mol / L sodium hydroxide solution and material B are added dropwise for 5-8 min. After the addition is completed, the mixture is filtered, washed with water, washed with alcohol, and dried to obtain a nanomaterial. The present invention overcomes the shortcomings of the prior art, and the method is not only applicable to zinc sulfide, but also to cadmium elements in the same family as zinc, thereby expanding the scope of application of the method.