CN114832907B - Method for preparing lamellar nano particles in large scale by rapid cutting - Google Patents
Method for preparing lamellar nano particles in large scale by rapid cutting Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
Abstract
The application belongs to the technical field of nano material preparation, and discloses a method for preparing lamellar nano particles in a large scale by rapid cutting. The method mainly comprises the following steps of mixing a layered material with diamond particles, performing rotary crushing to obtain a layered nanoparticle mixture with the particle size of 10-300 nm and diamond particles kept in an original state, adding a solvent into the mixture, uniformly mixing, separating, and taking supernatant to obtain a high-concentration layered nanoparticle dispersion liquid. According to the application, dry physical crushing is adopted, the cutting speed is high, the diamond particles are introduced as a medium, so that the preparation efficiency is high, the energy consumption is low, the particle size of the obtained nano particles is controllable, the crystal structure is kept intact, and by-products such as functional groups and the like can not be introduced in the cutting process. The proper solvent is selected, the dispersibility and stability of the nano particles are good, and the concentration of the dispersion liquid is adjustable. The layered nano particles prepared by the method have great potential in the fields of energy storage, industrial catalyst carriers and solid lubrication.
Description
Technical Field
The application belongs to the technical field of nano material preparation, and particularly relates to a method for preparing lamellar nano particles in a large scale by rapid cutting.
Background
The two-dimensional layered material has new physicochemical properties due to the ultrathin characteristic, and has potential application prospects in many fields. Delamination of layered materials to produce ultra-thin two-dimensional materials is a hotspot in current research. Cutting the layered material into small particles in the vertical direction is rarely studied relative to peeling the layered material in the planar direction. This is mainly due to the fact that exfoliation along the plane of the layered material is mainly against van der waals forces, whereas forces along the direction perpendicular to the plane of the layered material need to overcome the bonding between atoms in the plane of the layered material. For example, the exfoliation of graphite is 28 times stronger in the vertical direction than the van der waals forces that need to be overcome in the planar direction. Selective cleavage of the layered material into small nanoparticles is therefore more difficult than exfoliation of the layered material.
The current method for preparing the layered nano material mainly comprises a ball milling method and a mechanical milling method, and the two methods impact and mill the material by a top-down method to smash and refine the material to the nano-grade particle size. The layered nano material is prepared by adopting a ball milling method, the ball milling environment can be divided into dry and wet according to different use requirements, and for the wet milling condition, the obtained layered nano material dispersion liquid is convenient for post-processing treatment and application, but in the process of continuously reducing the particle size, the ball milling efficiency is reduced, and meanwhile, the ball milling medium can ensure that the purity of the ball milled product is not high. And the dry grinding can also introduce other impurities on the surface of the stripping material due to the solid stripping medium. These introduced byproducts, including functional groups or defects, can greatly reduce the performance of the material. The layered nano material is prepared by adopting a mechanical grinding method, and the shearing force generated by contact with the wall is involved in the grinding and crushing process, so that the layered material is easy to slip between layers to change the crystal structure, for example, 2H phase AB stacking graphite is converted into 3R phase ABC stacking graphite, and secondly, the grinding and crushing process is very long and the efficiency is low under the condition of no crushing medium and low crushing rotating speed due to the lubricating characteristic of the layered material under the nano scale.
Traditional lamellar materials, such as natural graphite or artificial graphite, are in the size of tens of micrometers to millimeter, while nanoscale graphite powder is prepared by a special heat treatment process and precursor materials, so that the yield is low and the cost is high. Thus, the layered nanoparticles are currently much more expensive than microparticles. For example, large-sized flake graphite or lamellar graphite has a price of less than 1000 yuan/ton, while nano graphite powder has a price of 300 yuan/kg. Meanwhile, compared with a two-dimensional nano structure, the high-quality layered nano particle keeps the layered structure of the original material and has a large number of open edge structures, so that the high-quality layered nano particle has important application prospects in the aspects of ion batteries, catalyst carriers, solid lubrication and the like, and can be applied to the fields of black matrix conductive coating in the manufacturing industry of electronic information kinescopes and displays, the chemical industry, steel lubrication, aerospace and the like. Therefore, in the modern living field and the high and new technical field, the realization of low-cost preparation of large-scale high-quality layered nano particles has important significance.
Disclosure of Invention
The application aims to solve the technical problems mentioned in the background art, and provides a method for preparing lamellar nano particles in a large scale by rapid cutting. The powder is added into a proper solvent to obtain nanoparticle dispersion liquid with good dispersibility and stability, so that the operability of the application of the nanomaterial is greatly improved.
In order to achieve the above purpose, the application adopts the following technical scheme:
a method for preparing high-quality lamellar nano particles in large scale by rapid cutting mainly comprises the following steps: mixing the layered material with diamond particles, performing rotary crushing, crushing the layered material under the cutting action of diamond to obtain uniformly crushed solid phase powder and a diamond particle mixture kept in the original state, adding a solvent into the mixture, uniformly mixing, and separating to obtain the high-concentration layered nanoparticle dispersion liquid.
The concentration of the layered nanoparticle dispersion liquid is 1 mg/mL-10 mg/mL.
In the technical scheme of the application, the method further comprises the step of drying the layered nanoparticle dispersion liquid to obtain a solid-phase layered nano powder material, wherein the drying is preferably freezing or supercritical drying.
In the technical scheme of the application, the method further comprises the step of dispersing the solid-phase layered nano powder material in a solvent again to obtain a secondary dispersion liquid containing the layered nano powder material.
In the technical scheme of the application, the concentration of the secondary dispersion liquid containing the layered nano powder material is 0.01 mg/mL-10 mg/mL.
In the technical scheme of the application, the layered material comprises hexagonal boron nitride, graphite, layered sulfide, layered thermoelectric material, layered topological insulator, layered oxide material and transition metal layered rare earth material, and the initial transverse dimension of the layered material is 2-10 micrometers.
In an aspect of the present application, the layered thermoelectric material includes bismuth telluride (Bi 2 Te 3 ) Antimony telluride (Sb) 2 Te 3 ) The layered sulfide comprises molybdenum disulfide (MoS 2 ) Tin disulfide (SnS) 2 ) The layered topological insulator comprises bismuth selenide (Bi 2 Se 3 ) The layered oxide material includes titanium dioxide (TiO 2 ) The transition metal layered rare earth material comprises titanium aluminum carbide (Ti 2 AlC)。
In the technical scheme of the application, diamond is adopted as the grinding particles, the hardness of the grinding particles is highest (Mohs hardness is 10), the particle size of the diamond particles is 10-100 meshes, preferably 30 meshes, the shape and structure of the diamond particles are kept intact in the grinding process, no impurities are introduced, and the purity of the obtained layered nano particles is high.
In the technical scheme of the application, the mass ratio of the layered material to the diamond particles is (10:1) - (1:10), preferably 1:1.
in the technical scheme of the application, the rotary crushing time is 30 minutes to 10 hours, the rotary crushing device is a classifying crusher, and the rotating speed of the classifying crusher is 1000 to 3000rpm, preferably 2800rpm; different from the characteristics that the ball mill is liable to cause interlayer sliding of layered materials and change the crystal structure, the inner wall of a crushing cavity of the graded crusher is made of stainless steel, the center of the cavity is an integrally formed stainless steel grinding disc, three hard crushing teeth are uniformly distributed on the grinding disc, and 6 stainless steel grinding hammers are uniformly distributed on the outer layer of the grinding disc at intervals. The classifying pulverizer motor provides a rotating speed of up to 1000-3000 rpm to make the mixture of layered material and diamond particles rotate orderly in the cavity at high speed. The diamond particles rotating at high speed collide with the layered material, and the sharp diamond fronts provide shearing forces oblique to the plane of the layered material; the layered material is crushed under the cutting action of diamond, so as to obtain a mixture of uniformly crushed solid phase powder and diamond particles which are kept in the original state, and the crushed solid phase powder is mainly layered nano particles with the particle size of 10-300 nm.
In the technical scheme of the application, the solvent comprises deionized water, an organic solvent, an aqueous surfactant solution and an aqueous polymer solution.
In the technical scheme of the application, the organic solvent is selected from methanol, ethanol, isopropanol, acetone, diethyl ether, N-methylpyrrolidone (NMP), N-dimethylformamide and benzene; the surfactant aqueous solution is selected from sodium dodecyl benzene sulfonate aqueous solution and cetyltrimethylammonium bromide aqueous solution; the aqueous polymer solution is selected from aqueous sodium polystyrene sulfonate.
In the technical scheme of the application, the separation is standing separation or centrifugal separation, and the standing separation is to stand the uniformly mixed system for 1-3 hours; the centrifugal separation is to centrifuge the uniformly mixed system for 5-30 minutes at the centrifugal speed of 10-3000 rpm.
In the technical scheme of the application, the particle size of the obtained layered nano-particles is 10-300 nm.
Compared with the prior art, the application has the following beneficial effects:
(1) According to the application, dry physical crushing is adopted, the cutting speed is high, the diamond particles are introduced as a medium, so that the preparation efficiency is high, the energy consumption is low, the particle size of the obtained nano particles is controllable, the crystal structure is kept intact, and by-products such as functional groups and the like can not be introduced in the cutting process. After proper solvent is selected, the nano particles have good dispersibility and stability and the concentration of the dispersion liquid is adjustable. The obtained layered nano-particles with the particle size of 10-300 nm have great potential in the fields of energy storage, industrial catalyst carriers and solid lubrication.
(2) The dry physical crushing adopts a classifying crusher, six stainless steel powder grinding hammers are arranged in a closed cavity of the crusher, and a strong wind field is provided at the rotating speed of 2800rpm, so that the mixture in the crusher is driven to move orderly at a high speed. On one hand, the grinding hammers collide to produce strong impact force perpendicular to the plane of the material, and the layered material is primarily crushed on the collision surface; on the other hand, the diamond particles and the layered material are fully collided in the cavity, and in the collision process, the single diamond particles can provide cutting force to act on the layered material, and the layered material is converted into particles from an initial sheet after thousands of times of cutting. Compared with the ball milling method, the method has the advantages that two iron balls only provide a collision site, the crushing efficiency is higher, and the obtained nano particles have high purity and good crystal structure. Meanwhile, as the number of diamond particles is more than that of ball milling media, the time length of grinding and refining can be greatly reduced, and the energy consumption is greatly reduced.
(3) Compared with wet grinding with solvent, the preparation method of the application can disperse layered material and diamond particles in the space of the crusher cavity, so that the effect of the diamond particles is more obvious. The solid phase powder obtained after crushing can be further processed, a proper solvent is added into the mixture obtained after crushing according to the solubility difference of the lamellar material in different solvents, and the lamellar particles with larger size after cutting and diamond particles are centrifugally separated to obtain high-quality lamellar nanoparticle dispersion liquid.
Drawings
FIG. 1 is a schematic diagram showing a comparison of a rapid cut layered material of the present application with a prior art ball mill exfoliated layered material.
Fig. 2 is an SEM image of the original layered graphite in example 1.
Fig. 3 is an SEM image of the small-sized graphite prepared in example 1.
Fig. 4 is an XRD pattern of the small-sized graphite and diamond mixture prepared in example 3, and the raw graphite powder.
Detailed Description
The present application will be described in further detail with reference to examples and comparative examples, but embodiments of the present application are not limited thereto.
The present application will now be described in detail with reference to the detailed description and drawings for the purpose of making a clearer understanding of the present application to those skilled in the art. The following examples are merely illustrative of the actual operation of the method and are not limiting in implementation. In addition to the examples of operation described below, the details may be optimized or modified, and need not be, nor cannot be, exhaustive of all embodiments. Any modification of the general knowledge based on the embodiment of the present application is within the scope of the present application.
According to the application, the layered material and the diamond particles are mixed and then subjected to high-speed rotary crushing, and the layered material is crushed under the cutting action of the diamond, so that uniform solid-phase powder is obtained. In the crushing process, a grinding hammer of the classifying crusher runs at a high speed to provide acting force for diamond particles, the shearing force direction is inclined to the plane of the layered material, and the sharp front surface of the diamond cuts the layered material into nano-scale particle powder; the extrusion force direction is perpendicular to the plane of the layered material and is provided by the collision surface of the grinding hammer rotating at high speed. Among them, the main pulverization and refinement functions are the cutting force provided by diamond particles.
In the application, a device used in rotary crushing is a classifying crusher, unlike the characteristic that a ball mill is easy to cause interlayer sliding of layered materials to prepare lamellar two-dimensional materials, the method utilizes a plurality of high-speed rotary grinding hammers to manufacture strong impact force, the materials are crushed on a collision surface, and the obtained layered nano particles have high purity and a crystal structure is kept intact. Secondly, mixing the layered material and diamond particles in proportion, placing the mixture in a closed cavity of a classifying pulverizer, setting a proper rotating speed, starting the machine, manufacturing a strong wind field by a grinding hammer rotating in the cavity, driving the mixture therein to move orderly at a high speed, manufacturing a strong impact force perpendicular to a material plane by collision between the grinding hammers under the action of a centrifugal field and a gravitational field, pulverizing the layered material on a collision surface, colliding the diamond particles with the layered material, and applying a cutting force in a direction oblique to the layered material plane, thereby refining the particle size of the layered material. Because small-particle diamond is adopted as a crushing medium, the particle size of the lamellar graphite particles obtained after the diamond is added is greatly reduced in the same grinding time period compared with the case of no addition. The solid phase powder crushed by the method has high quality, good crystal structure and easy post processing. Adding solvent into the mixture obtained after crushing, mixing uniformly, separating, and taking supernatant to obtain the high-quality layered nanoparticle dispersion liquid with adjustable concentration. The solvents involved in the present application include deionized water, an organic solvent, preferably methanol, absolute ethanol, isopropanol, acetone, diethyl ether, N-methylpyrrolidone (NMP), N-dimethylformamide, benzene, and an aqueous polymer solution, preferably sodium dodecyl benzene sulfonate, cetyl trimethylammonium bromide, according to the difference in solubility of the layered materials in different solvents.
The particle size of the nano particles prepared by the application is 10-300 nm, and the layered structure is still maintained and the crystal structure is intact. The specific embodiment of the application is as follows:
example 1
Lamellar graphite (transverse dimension 10 microns) and diamond particles (30 mesh) were combined in a mass ratio of 1:1, then placing the mixture into a crushing cavity of a classifying crusher, setting the rotating speed to 2800rpm for crushing and refining, and obtaining the mixture of the crushed graphite and the crushed diamond particles after the crushing time is 3 hours. The mixture obtained after pulverization was dispersed in an isopropanol solution at a concentration of 10mg/mL, and then centrifuged at 3000rpm for 10 minutes, and the supernatant was collected to obtain a high-quality dispersion of nano graphite particles having an average particle diameter of 300nm or less.
Example 2
Lamellar graphite (transverse dimension 10 microns) and diamond particles (30 mesh) were combined in a mass ratio of 1:1, and then placing the mixture into a crushing cavity of a classifying crusher, setting the rotating speed to 2800rpm, and crushing for 1 hour. The mixture obtained after pulverization was dispersed in an isopropyl alcohol solution at a concentration of 1mg/mL, centrifuged at 3000rpm for 10 minutes, and the supernatant was collected to obtain a graphite dispersion having an average particle diameter of 300nm or less.
Example 3
Lamellar graphite (transverse dimension 10 microns) and diamond particles (30 mesh) were combined in a mass ratio of 1:1, and then placing the mixture into a crushing cavity of a classifying crusher, setting the rotating speed to 2800rpm, and crushing for 5 hours. Dispersing the mixture obtained after crushing into isopropanol solution at a concentration of 5mg/mL, centrifuging at 3000rpm for 20 minutes, and taking supernatant to obtain high-quality nano graphite particle dispersion liquid with an average particle size of below 300nm.
Example 4
Lamellar graphite (transverse dimension 10 microns) and diamond particles (30 mesh) were combined in a mass ratio of 1:1, and then placing the mixture into a crushing cavity of a classifying crusher, setting the rotating speed to 1500rpm, and crushing for 5 hours. Dispersing the mixture obtained after crushing into isopropanol solution at a concentration of 5mg/mL, centrifuging at 3000rpm for 20 minutes, and taking supernatant to obtain high-quality nano graphite particle dispersion liquid with an average particle size of 300nm or less.
Example 5
Lamellar graphite (transverse dimension 10 microns) and diamond particles (30 mesh) were combined in a mass ratio of 1:5, uniformly mixing, and then placing the mixture into a crushing cavity of a classifying crusher, wherein the rotating speed is 2800rpm, and the crushing time is 5 hours. Dispersing the mixture obtained after crushing into isopropanol solution at a concentration of 5mg/mL, centrifuging at 3000rpm for 20 minutes, and taking supernatant to obtain high-quality nano graphite particle dispersion liquid with an average particle size of 300nm or less.
Example 6
Lamellar graphite (transverse dimension 10 microns) and diamond particles (30 mesh) were combined in a mass ratio of 1:10, and then placing the mixture into a crushing cavity of a classifying crusher, setting the rotating speed to 2800rpm, and crushing for 5 hours. Dispersing the mixture obtained after crushing into isopropanol solution at a concentration of 5mg/mL, centrifuging at 3000rpm for 20 minutes, and taking supernatant to obtain high-quality nano graphite particle dispersion liquid with an average particle size of 300nm or less.
Example 7
Hexagonal boron nitride (transverse dimension 10 micrometers) and diamond particles (30 mesh) were mixed in a mass ratio of 1:1, and then placing the mixture into a crushing cavity of a classifying crusher, setting the rotating speed to 2800rpm, and crushing for 5 hours. Dispersing the mixture obtained after crushing into isopropanol solution at a concentration of 5mg/mL, centrifuging at 3000rpm for 20 minutes, and taking supernatant to obtain high-quality nano boron nitride particle dispersion liquid with an average particle size of less than 300nm.
Example 8
Layered molybdenum sulphide (transverse dimension 10 microns) was mixed with diamond particles (30 mesh) in a mass ratio of 1:1, and then placing the mixture into a crushing cavity of a classifying crusher, setting the rotating speed to 2800rpm, and crushing for 5 hours. Dispersing the mixture obtained after crushing into an absolute ethanol solution at a concentration of 5mg/mL, centrifuging at 3000rpm for 20 minutes, and taking supernatant to obtain a high-quality nano molybdenum sulfide particle dispersion liquid with an average particle size of less than 300nm.
Example 9
Layered bismuth telluride (transverse dimension 10 microns) was mixed with diamond particles (30 mesh) in a mass ratio of 1:1, and then placing the mixture into a crushing cavity of a classifying crusher, setting the rotating speed to 2800rpm, and crushing for 5 hours. Dispersing the mixture obtained after crushing into an absolute ethanol solution with the concentration of 5mg/mL, centrifuging at 3000rpm for 20 minutes, and taking supernatant to obtain a high-quality nano bismuth telluride particle dispersion with the average particle size of less than 300nm.
Example 10
Layered bismuth selenide (transverse dimension 10 microns) was mixed with diamond particles (30 mesh) in a mass ratio of 1:1, and then placing the mixture into a crushing cavity of a classifying crusher, setting the rotating speed to 2800rpm, and crushing for 5 hours. Dispersing the mixture obtained after crushing into a mixed solution of acetone and deionized water at a concentration of 5mg/mL, centrifuging at 3000rpm for 20 minutes, and taking supernatant to obtain a high-quality nano bismuth selenide particle dispersion with an average particle size of below 300nm.
Example 11
Layered titania (transverse dimension 10 microns) was mixed with diamond particles (30 mesh) in a mass ratio of 1:1, and then placing the mixture into a crushing cavity of a classifying crusher, setting the rotating speed to 2800rpm, and crushing for 5 hours. Dispersing the mixture obtained after crushing into deionized water at a concentration of 5mg/mL, centrifuging at 3000rpm for 20 minutes, and taking supernatant to obtain high-quality nano titanium dioxide particle dispersion liquid with an average particle size of less than 300nm.
Example 12
Layered titanium aluminum carbide (transverse dimension 10 microns) was mixed with diamond particles (30 mesh) in a mass ratio of 1:1, and then placing the mixture into a crushing cavity of a classifying crusher, setting the rotating speed to 2800rpm, and crushing for 5 hours. Dispersing the mixture obtained after crushing into an absolute ethanol solution at a concentration of 5mg/mL, centrifuging at 3000rpm for 20 minutes, and taking supernatant to obtain a high-quality nano titanium aluminum carbide particle dispersion with an average particle size of less than 300nm.
Comparative example 1
The lamellar graphite (transverse dimension 10 micrometers) is placed in a crushing cavity of a classifying crusher, the rotating speed is set at 2800rpm for crushing and refining, the crushing time is 3 hours, the crushed product is dispersed into isopropanol solution at the concentration of 5mg/mL, and then the solution is centrifuged at 3000rpm for 20 minutes, and the supernatant is taken to obtain graphite dispersion liquid with the average particle size of 1 micrometer.
Analysis of results
FIG. 1 is a schematic diagram showing a comparison of a rapid cut layered material of the present application with a prior art ball mill exfoliated layered material. In the prior art, the ball milling stripping is based on the shearing force parallel to the plane of the layered material, and if the direction of the layered material on the plane is parallel to the momentum direction of the ball in the high-speed rotation process, the layered material is gradually stripped into few layers or single layers of materials; the fast cutting in the present application is based on the cutting force provided by diamond perpendicular to the plane of the layered material, which is continuously cut during high-speed rotation, thereby being converted from an initial sheet into a granular shape.
Fig. 2 is an SEM image of the original layered graphite in example 1. The raw graphite is present in the form of flakes in the figure, with a lateral dimension of about 10 microns.
Fig. 3 is an SEM image of the small-sized graphite prepared in example 1. In the figure, the small-sized graphite is uniformly dispersed in the field of view of a scanning electron microscope, and at a scale of 1 micron, it is known that most of the graphite exists in the form of particles by scale measurement analysis, and the average particle diameter is 300nm or less.
Fig. 4 is an XRD pattern of the small-sized graphite and diamond mixture prepared in example 3, and the raw graphite powder. In the figure, blue columnar lines represent the characteristic peak positions of 2H phase graphite, and the graphite powder subjected to 5-hour crushing treatment has the same characteristic peak as the original graphite powder when 2θ=26.4 degrees, and no obvious deviation is seen, so that the original 2H phase structure of the graphite powder is maintained in the crushing and refining process.
The embodiments described above are preferred embodiments of the present application, but the embodiments of the present application are not limited to the embodiments described above, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principles of the present application should be made in the equivalent manner, and are included in the scope of the present application.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (8)
1. A method for preparing lamellar nano particles in a large scale by rapid cutting, which is characterized in that: the method comprises the following steps: mixing a layered material with diamond particles, performing rotary crushing, crushing the layered material under the cutting action of diamond to obtain uniformly crushed solid-phase powder and a mixture of diamond particles kept in an original state, adding a solvent into the mixture, uniformly mixing, and separating to obtain a layered nanoparticle dispersion liquid;
the particle size of the diamond particles is 30 meshes; the mass ratio of the layered material to the diamond particles is (10:1) - (1:10);
the rotary crushing time is 30 minutes-10 hours, the rotary crushing device is a classifying crusher, the rotating speed of the classifying crusher is 2800rpm, the inner wall of a crushing cavity of the classifying crusher is made of stainless steel, the center of the cavity is an integrally formed stainless steel grinding disc, three hard crushing teeth are uniformly distributed on the grinding disc, and 6 stainless steel grinding hammers are uniformly distributed on the outer layer of the grinding disc at intervals.
2. The method for rapid cutting large scale production of layered nanoparticles according to claim 1, wherein: the concentration of the layered nanoparticle dispersion liquid is 1 mg/mL-10 mg/mL.
3. The method for rapid cutting large scale production of layered nanoparticles according to claim 1, wherein: the preparation method further comprises the step of drying the layered nanoparticle dispersion liquid to obtain a solid-phase layered nano powder material, wherein the drying adopts freezing or supercritical drying.
4. A method for rapid cutting large scale production of layered nanoparticles according to claim 3, wherein: the method further comprises the following steps of re-dispersing the solid-phase layered nano powder material in a solvent to obtain a secondary dispersion liquid containing the layered nano powder material;
the concentration of the secondary dispersion liquid containing the layered nano powder material is 0.01 mg/mL-10 mg/mL.
5. The method for rapid cutting large scale production of layered nanoparticles according to claim 1, wherein: the layered material comprises hexagonal boron nitride, graphite, layered sulfide, layered thermoelectric material, layered topological insulator, layered oxide material and transition metal layered rare earth material, and the initial transverse dimension of the layered material is 2-10 micrometers.
6. The method for rapid cutting large scale production of layered nanoparticles as recited in claim 5, wherein: the layered thermoelectric material comprises bismuth telluride and antimony telluride, the layered sulfide comprises molybdenum disulfide and tin disulfide, the layered topological insulator comprises bismuth selenide, the layered oxide material comprises titanium dioxide, and the transition metal layered rare earth material comprises titanium aluminum carbide.
7. The method for rapid cutting large-scale production of layered nanoparticles according to claim 1 or 4, wherein: the solvent comprises deionized water, an organic solvent, a surfactant aqueous solution and a polymer aqueous solution;
the organic solvent is selected from methanol, ethanol, isopropanol, acetone, diethyl ether, N-methylpyrrolidone, N-dimethylformamide and benzene; the surfactant aqueous solution is selected from sodium dodecyl benzene sulfonate aqueous solution and cetyltrimethylammonium bromide aqueous solution; the aqueous polymer solution is selected from aqueous sodium polystyrene sulfonate.
8. The method for rapid cutting large scale production of layered nanoparticles according to claim 1, wherein: the separation is static separation or centrifugal separation, wherein the static separation is to keep the uniformly mixed system for 1-3 hours; the centrifugal separation is to centrifuge the uniformly mixed system for 5-30 minutes at the centrifugal speed of 10-3000 rpm.
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