Device and equipment for preparing nano material by adopting liquid-phase laser irradiation technology

Abstract

The utility model relates to a device and equipment for preparing a nano material by adopting a liquid-phase laser irradiation technology. The device comprises a magnetic stirring table, a rotating table, a container placing platform, a container and a stirring magneton. Wherein the rotating table is arranged on the magnetic stirring table; the container placing platform is arranged on the rotating table; the container is arranged on the container placing platform and is used for containing a solution to be irradiated and a material to be irradiated so as to receive laser irradiation; and the stirring magneton is placed in the container. By adopting the device, the problems of local excessive irradiation or non-uniform irradiation and small effective irradiation area in large-scale production and preparation of nano materials can be reduced.

Description

Technical Field

[0001] This application relates to the technical field of nanomaterial preparation, and particularly to an apparatus and equipment for preparing nanomaterials using liquid-phase laser irradiation technology. Background Art

[0002] Laser technology has been widely applied in the field of industrial manufacturing and has been developing rapidly in recent years. As a processing method with high precision, strong flexibility, environmental friendliness and easy automation, laser technology has shown significant advantages in material processing and has become one of the important technologies in the traditional manufacturing field.

[0003] Although laser technology has been maturely applied in industrial mass processing, the industrial application of liquid-phase laser technology in nanoparticle preparation is still in its infancy, not yet fully mature, and large-scale production has not been popularized.

[0004] Currently, the preparation of nanomaterials using liquid-phase laser irradiation technology mostly involves fixed-point radiation, which easily leads to problems such as uneven irradiation or over-irradiation, and a small effective irradiation area. The above problems are not conducive to the large-scale production and preparation of nanomaterials. Summary of the Utility Model

[0005] Based on this, it is necessary to provide an apparatus and equipment for preparing nanomaterials using liquid-phase laser irradiation technology.

[0006] In a first aspect, this application provides an apparatus for preparing nanomaterials using liquid-phase laser irradiation technology, the apparatus comprising:

[0007] A magnetic stirring table;

[0008] A rotating table, which is arranged on the magnetic stirring table;

[0009] A container placement platform, which is arranged on the rotating table;

[0010] A container, which is arranged on the container placement platform and is used to hold the solution and material to be irradiated to receive laser irradiation;

[0011] A stirring magnetic bar, which is placed inside the container.

[0012] In one embodiment, the size of the stirring magnetic bar is positively correlated with the diameter of the container.

[0013] In one embodiment, the container is a cylindrical container.

[0014] In one embodiment, the stirring magnetic bar is a polygonal stirring magnetic bar.

[0015] In one embodiment, the stirring magnetic bar is an octagonal stirring magnetic bar.

[0016] In one embodiment, the magnetic stir bar is an oval magnetic stir bar.

[0017] Second, the present application also provides a device for preparing nanomaterials using a liquid-phase laser irradiation technique. The device includes:

[0018] A device for preparing nanomaterials using a liquid-phase laser irradiation technique as in the above embodiment;

[0019] A laser for generating laser light;

[0020] A light guiding component disposed in the optical path between the container and the laser to guide the laser into the solution to be irradiated and the material to be irradiated in the container.

[0021] In one embodiment, the device further includes:

[0022] A sealed cabinet body having an accommodation space, and the device for preparing nanomaterials using a liquid-phase laser irradiation technique, the laser, and the light guiding component are all disposed in the accommodation space.

[0023] In one embodiment, the accommodation space of the sealed cabinet body has a partition plate to form a first sub-accommodation space and a second sub-accommodation space;

[0024] Wherein, the laser and the light guiding component are disposed in the first sub-accommodation space, and the device is disposed in the second sub-accommodation space. The laser light generated by the laser is projected onto the solution to be irradiated and the material to be irradiated in the container through the light guiding component and the light passing hole of the partition plate.

[0025] In one embodiment, the sealed cabinet body further includes:

[0026] A human-machine interaction terminal, and the human-machine interaction terminal is respectively connected to the magnetic stirring table, the rotating table, and the laser.

[0027] The above device for preparing nanomaterials using a liquid-phase laser irradiation technique has at least the following beneficial effects:

[0028] The magnetic stirring table generates a vertical eddy current by driving the magnetic stir bar, realizing uniform dispersion of the solution and heat conduction, alleviating the problems of local deposition and overheating, and providing a uniform material basis for laser irradiation; the horizontal rotational movement of the rotating table expands the laser spot from a static circle to a dynamic ring, increasing the effective irradiation area, and at the same time avoiding repeated irradiation through "spot movement", reducing the risk of local over-irradiation from the source. Through vertical stirring to break up agglomerates and horizontal rotation to expand the spot, the uniformity of solution mixing, the irradiation area, and the production flexibility are synchronously improved, breaking through the bottleneck of efficiency and uniformity in the large-scale application of traditional liquid-phase laser irradiation techniques, and providing a reliable technical solution for the industrial production of nanomaterials. Description of the Drawings

[0029] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0030] Figure 1 It is a schematic structural diagram of a device for preparing nanomaterials by using a liquid-phase laser irradiation technique in an embodiment;

[0031] Figure 2 It is a schematic diagram of the effective irradiation area before and after optimization in an embodiment;

[0032] Figure 3 It is a schematic structural diagram of a device for preparing nanomaterials by using a liquid-phase laser irradiation technique in an embodiment;

[0033] Figure 4 It is a schematic structural diagram of a device for preparing nanomaterials by using a liquid-phase laser irradiation technique in another embodiment. Detailed implementation manners

[0034] To facilitate the understanding of the present application, the following will describe the present application more comprehensively with reference to the relevant drawings. Embodiments of the present application are given in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs. The terms used in the specification of the present application herein are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0036] It can be understood that the terms "first", "second", etc. used in the present application can be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, without departing from the scope of the present application, the first resistor can be called the second resistor, and similarly, the second resistor can be called the first resistor. Both the first resistor and the second resistor are resistors, but they are not the same resistor.

[0037] It can be understood that in the following embodiments, "connection", if there is an electrical signal or data transmission between the connected circuits, modules, units, etc., should be understood as "electrical connection", "communication connection", etc.

[0038] It can be understood that "at least one" means one or more, and "a plurality" means two or more. "At least a part of the component" means a part or all of the component.

[0039] As used herein, the singular forms "a", "an" and "the" may also include the plural forms unless the context clearly dictates otherwise. It should also be understood that the terms "comprising", "including" or "having" and the like specify the presence of the stated features, wholes, steps, operations, components, parts or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof. At the same time, the term "and / or" used in this specification includes any and all combinations of the related listed items.

[0040] In an exemplary embodiment, as Figure 1 shown, the present application provides an apparatus for preparing nanomaterials by using a liquid-phase laser irradiation technique. The apparatus includes a magnetic stirring table 2, a rotating table 4, a container placement platform 6, a container 8, and a stirring magnetic stirrer 10. Among them, the rotating table 4 is disposed on the magnetic stirring table 2; the container placement platform 6 is disposed on the rotating table 4; the container 8 is disposed on the container placement platform 6 and is used for containing the solution to be irradiated and the material to be irradiated to receive laser irradiation; the stirring magnetic stirrer 10 is placed in the container 8.

[0041] Among them, the magnetic stirring table 2 may refer to a magnetic stirrer, which is a device capable of providing magnetic force to drive the stirring magnetic stirrer 10 to rotate.

[0042] Exemplarily, the magnetic stirring table 2 provides rotational power for the stirring magnetic stirrer 10 through a built-in magnetic drive module for realizing the basic mixing of the solution. When the solution to be irradiated (such as a nanoparticle precursor solution) and the material to be irradiated are injected into the container 8, the magnetic stirring table 2 drives the stirring magnetic stirrer 10 to rotate at a high speed, generating a vertical eddy current effect, promoting the uniform dispersion of the particles in the solution, and avoiding the bottom deposition or concentration stratification phenomenon caused by the action of gravity. It not only provides a uniform material condition for the subsequent laser irradiation, but also reduces the heat accumulation in the local area through continuous flow, initially alleviating the risk of local over-irradiation. The rotating table 4 is driven by a precision motor to drive the container placement platform 6 and the container 8 to perform a horizontal rotational movement, upgrading the laser irradiation behavior from "fixed-point irradiation" to "circular scanning". Specifically, when the laser beam is vertically incident on the surface of the solution in the container 8, the rotation of the rotating table 4 will cause the spot action area in the container 8 to expand from a static circle (only covering a small area before optimization, such as Figure 2 shown on the left) to a dynamic annular coverage area (such as Figure 2As shown on the right side, the effective irradiation area is increased by nearly 10 times compared with the traditional method. Under the same reaction conditions, only 50 ml of the target sample could be prepared in the first 10 minutes before optimization, while after optimization, it can reach ≥500 ml. This expansion not only enlarges the action range of the laser through physical movement, but also avoids repeated irradiation of the same area through "spot movement", fundamentally reducing the problem of local overheating. In a specific embodiment, the container placement platform 6 can be rigidly connected to the rotating table 4 through structures such as bolts or buckles to ensure that the container 8 maintains a vertical position during high-speed rotation, avoiding optical path deviation or solution splashing caused by shaking. At the same time, the surface of the container placement platform 6 can be provided with positioning grooves or jigs of various specifications according to the size of the container 8, adapting to small experimental containers with a 2.5 cm diameter to large-scale production containers with a 7 cm diameter, meeting the full-cycle requirements from R & D to mass production. For example, small-sized containers can be carried during the experimental stage for process parameter debugging, and large-volume containers can be replaced during large-scale production without modifying the main structure of the equipment, significantly improving the flexibility of the device.

[0043] For the device for preparing nanomaterials using the liquid-phase laser irradiation technology described above, the magnetic stirring table 2 generates a vertical eddy current by driving the stirring magnetic particle 10, realizing uniform dispersion and heat conduction of the solution, alleviating the problems of local deposition and overheating, and providing a uniform material basis for laser irradiation; the horizontal rotational movement of the rotating table 4 expands the laser spot from a static circle to a dynamic ring, increasing the effective irradiation area. At the same time, through "spot movement", repeated irradiation is avoided, fundamentally reducing the risk of local over-irradiation. By vertically stirring to break up agglomerates and horizontally rotating to expand the spot, the synchronous improvement of solution mixing uniformity, irradiation area, and production flexibility is achieved, breaking through the bottleneck of efficiency and uniformity in the large-scale application of traditional liquid-phase laser irradiation technology, and providing a reliable technical solution for the industrial production of nanomaterials.

[0044] In an exemplary embodiment, the size of the stirring magnetic particle 10 is positively correlated with the diameter of the container 8.

[0045] Exemplarily, for containers of different specifications, the magnetic particle size is matched by a linear ratio. For example, a 2.5 cm diameter container is paired with a 2 cm long cylindrical magnetic particle to ensure that the stirring force covers the entire bottom area; a 7 cm diameter container uses an octagonal stirring magnetic particle with a diameter of 5 - 6 cm. Its multi-edge structure can generate a stronger turbulent effect during rotation, breaking large particle agglomerates and causing the solution to form a cross-flow in the horizontal and vertical directions. This not only improves the stirring efficiency but also accelerates the uniform distribution of laser energy through enhanced mass transfer. Combined with the movement of the rotating table 4, a triple mechanism of "stirring to break up agglomerates - rotating to expand the spot - flowing to even out energy" is formed, fundamentally solving the problem of uneven irradiation.

[0046] In this embodiment, through linear proportion matching and structural optimization, the mixing efficiency, irradiation uniformity, and scalability adaptability in the preparation process of nanomaterials are significantly improved. Through size adaptation, "dead - angle - free" mixing of solutions in containers 8 of different specifications is achieved, avoiding the failure of stirring in the edge area due to too small a magnetic stirrer or collisions caused by too large a magnetic stirrer. Also, by means of modular replacement of the magnetic stirrer, the full - process requirements from small - scale trials to mass production can be compatible without modifying the main body of the equipment, reducing the maintenance cost while improving the mass - production efficiency, providing a low - cost and high - performance engineering solution for the industrial application of liquid - phase laser technology.

[0047] In an exemplary embodiment, the container 8 is a cylindrical container.

[0048] In this embodiment, the symmetric structure of the cylindrical container enables the stirring magnetic stirrer 10 (such as a cylindrical or octagonal stirring magnetic stirrer) to form a uniform annular eddy current during rotation, avoiding the flow dead volume caused by the existence of corners in square or irregular - shaped containers, and ensuring full - area mixing of the solution in the vertical direction (up - and - down tumbling) and the horizontal direction (annular flow). For example, when a 2 - cm - long cylindrical magnetic stirrer rotates in a 2.5 - cm - diameter cylindrical container, the eddy current can cover the entire bottom area from the center to the wall, effectively breaking up the aggregates of nanoparticle precursors; when a 7 - cm - diameter cylindrical container is paired with an octagonal stirring magnetic stirrer with a diameter of 5 - 6 cm, the turbulence generated by the multi - edged magnetic stirrer can extend upward along the inner wall of the cylinder, forming a helical - rising composite flow field, further enhancing the uniformity of the high - volume solution and improving the dispersion of the solution before laser irradiation. Secondly, in combination with the horizontal rotation movement of the rotating table 4, the laser spot can expand from the center of the container to the edge to form a uniform annular irradiation zone (as Figure 2 shown), and the effective irradiation area is increased compared with that of an asymmetric container (such as a square). In addition, the arc bottom of the cylindrical container is adapted to the rotation trajectory of the stirring magnetic stirrer 10, which can guide the solution to circulate along the wall, avoiding local overheating caused by solution retention in the spot - focusing area, and controlling the temperature fluctuation during irradiation within ±1.5 °C, significantly improving the consistency of the nanoparticle morphology.

[0049] In an exemplary embodiment, the stirring magnetic stirrer 10 is a polygonal stirring magnetic stirrer.

[0050] In this embodiment, the multi-edge design of the polygonal magnetic stirrer can generate a stronger turbulent effect during rotation. Compared with the single annular eddy current of the cylindrical magnetic stirrer, when its edges contact the solution, local fluid separation will be induced, forming more micro-scale vortices, thereby enhancing the shear breaking ability for large particle aggregates. For example, when using a 5-6 cm octagonal stirring magnetic stirrer in a container 8 with a 7 cm diameter, the average agglomeration size of the nanoparticle precursor can be reduced from 500 nm to below 100 nm, effectively improving the solution dispersion. This turbulent effect can also accelerate the mass transfer process, enabling the energy generated by laser irradiation or the heat of chemical reaction to spread more quickly to the entire solution. Combined with the horizontal movement of the rotating table 4, it can improve the solution temperature uniformity and avoid particle growth differences caused by uneven temperature. In addition, the angular structure of the polygonal magnetic stirrer will form a combined flow in the horizontal and vertical directions during rotation. The horizontal direction pushes the solution to move in a circular motion along the wall of the container 8, expanding the stirring coverage; the vertical direction drives the solution to generate a convective up and down movement through the up and down cutting action of the corners, eliminating the stirring dead zone in the central area at the bottom of the container 8. This three-dimensional mixing mode improves the stirring efficiency by about, and even in high-viscosity solutions (such as precursor slurries with 30% solid content), it can ensure uniform mixing in the entire area, providing a consistent material basis for laser irradiation.

[0051] In an exemplary embodiment, the stirring magnetic stirrer 10 is an octagonal stirring magnetic stirrer.

[0052] In this embodiment, the eight edges of the octagonal stirring magnetic stirrer can trigger a complex turbulent effect during rotation. Compared with the single annular flow of the cylindrical magnetic stirrer, it can form more micro-scale vortices in the solution, effectively enhancing the shear breaking ability for large particle aggregates and improving the solution dispersion. At the same time, the multi-edge design promotes a combined movement of horizontal circular flow and vertical convection of the solution, eliminating the stirring dead zone in the central area at the bottom of the container 8, and enabling uniform mixing in the entire area even in high-viscosity or high-solid-content solutions. In addition, this three-dimensional mixing mode accelerates the mass transfer and heat transfer processes. Combined with the horizontal movement of the rotating table 4, it can improve the solution temperature uniformity, making the laser energy act on the solution more uniformly, and significantly improving the uniformity and production efficiency of particles in the large-scale preparation process.

[0053] In an exemplary embodiment, the stirring magnetic stirrer 10 is an elliptical stirring magnetic stirrer.

[0054] In this embodiment, when the elliptical magnetic stir bar rotates, larger sweeping areas can be formed at both ends of the major axis. Compared with the cylindrical magnetic stir bar, it has a stronger ability to push the solution in the edge area of the container 8, can effectively cover the bottom of the container 8 with a larger diameter, and avoid the formation of a stationary layer due to insufficient fluid flow at the edge. At the same time, the curvature change of the elliptical cross-section will cause periodic fluid disturbances during rotation, generating alternating vortices and shear forces. This dynamically changing flow field can more efficiently break up the aggregates of nanoparticle precursors. For example, within the same stirring time, it can reduce the average aggregate size and improve the dispersion efficiency.

[0055] In an exemplary embodiment, the present application further provides a device for preparing nanomaterials using a liquid-phase laser irradiation technique. The device includes a device for preparing nanomaterials using a liquid-phase laser irradiation technique as described in the above embodiment, a laser 100, and a light guiding component 300. Among them, the laser 100 is used to generate laser light; the light guiding component 300 is disposed on the optical path between the container 8 and the laser 100 to guide the laser light into the solution and the material to be irradiated in the container 8.

[0056] The above device for preparing nanomaterials using a liquid-phase laser irradiation technique integrates the laser 100, the light guiding component 300, and the device for preparing nanomaterials using a liquid-phase laser irradiation technique in the above embodiment. Based on the ability of this device to reduce local over-irradiation or irradiation non-uniformity in the large-scale production of nanomaterials, a highly efficient and collaborative liquid-phase laser irradiation preparation system is constructed, significantly improving the efficiency, safety, and controllability of nanomaterial production.

[0057] In an exemplary embodiment, as Figure 3 shown, the device further includes a sealed cabinet 500. The sealed cabinet 500 has an accommodating space, and the device for preparing nanomaterials using a liquid-phase laser irradiation technique, the laser 100, and the light guiding component 300 are all disposed in the accommodating space.

[0058] In this embodiment, an independent clean space is formed based on the closed structure of the sealed cabinet 500, which can effectively block dust, particulate matter, and corrosive gases in the external environment and prevent them from adhering to the surfaces of the optical components of the laser 100 (such as the resonator cavity, lens) or the light guiding component 300 (such as the light guiding arm, focusing mirror). For example, dust deposition may cause a decrease in the reflection / transmission efficiency of the laser beam and even lead to overheating and damage of the components due to poor local heat dissipation. Through the sealed design, the concentration of dust particles can be reduced, thereby extending the service life of the laser 100 and reducing the downtime for debugging due to optical contamination.

[0059] In an exemplary embodiment, as Figure 3As shown, the accommodating space of the sealed cabinet 500 has a partition 700, so that the accommodating space forms a first sub-accommodating space and a second sub-accommodating space; wherein, the laser 100 and the light guiding component 300 are arranged in the first sub-accommodating space, and the device is arranged in the second sub-accommodating space. The laser generated by the laser 100 is projected onto the solution and the material to be irradiated in the container 8 through the light guiding component 300 and the light passing hole 702 of the partition 700.

[0060] In this embodiment, the accommodating space of the sealed cabinet 500 is divided into an independent first sub-accommodating space and a second sub-accommodating space by the partition 700, forming a physical isolation barrier. While the light passing hole 702 of the partition 700 is designed to ensure the precise conduction of the laser beam, it can effectively block the sputtered droplets generated by the violent stirring or laser impact of the solution in the container 8 during the irradiation process. For example, during high-power laser irradiation, the solution may boil or splash due to the photothermal effect. If not isolated, the sputtered droplets adhering to the optical elements of the laser 100 (such as the resonator mirror and the inner wall of the light guiding arm) will cause local optical performance degradation and even lead to a short circuit (such as droplets penetrating into the power module of the laser 100). By separating with the partition 700, the sputtering risk can be reduced, and the reliability of the long-term operation of the equipment can be significantly improved. Secondly, the laser light path channel formed by the partition 700 can be further optimized by an internal diaphragm or a diffuse reflection coating to ensure that the laser beam is strictly restricted within the preset path, avoiding harm to the operator caused by the optical path deviation due to the vibration of the device.

[0061] In an exemplary embodiment, as Figure 4 shown, the sealed cabinet 500 further includes a human-machine interaction terminal 900. The human-machine interaction terminal 900 is respectively connected to the magnetic stirring table 2, the rotating table 4 and the laser 100 (the connection relationship is not shown in the figure).

[0062] In this embodiment, the human-machine interaction terminal 900 serves as a unified control interface, supporting the operator to set and dynamically adjust the parameters of multiple components in real time according to the preparation requirements of different nanomaterials (such as particle size, morphology, concentration). For example, for refractory targets or high-viscosity solutions, the speed of the magnetic stirring table 2 can be increased from 200 rpm to 500 rpm through the terminal, while the speed of the rotating table 4 can be reduced from 3 mm / s to 1.5 mm / s, and the power of the laser 100 can be increased from 50 W to 80 W to form a customized process path of "strong stirring - slow rotation - high energy"; for easily decomposable precursors, the laser power can be reduced to 30 W, and the speed of the rotating table 4 can be increased to 5 mm / s at the same time to avoid local overheating. This multi-parameter collaborative adjustment ability enables the equipment to be compatible with various nanomaterial preparation processes.

[0063] Secondly, through the automated program preset in the terminal, parameter memory and one-key reproduction in mass production can also be achieved. For example, the process parameters successfully debugged for the first time (such as stirring speed of 300 rpm, rotation speed of 2.5 mm / s, and laser frequency of 15 Hz) can be stored as a recipe file, and the full-process automated operation can be directly started by calling it during subsequent production, avoiding parameter deviation caused by manual repeated setting, improving the uniformity of nanoparticles, and enhancing the repeatability between batches. In addition, the real-time monitoring function of the terminal can dynamically display the operating status of each component and automatically trigger an early warning or shutdown protection when parameters are abnormal (such as overload of the stirring table).

[0064] In the description of this specification, the description referring to terms such as "some embodiments", "other embodiments", etc. means that the specific features, structures, materials or features described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic description of the above terms does not necessarily refer to the same embodiment or example.

[0065] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0066] The above-described embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. An apparatus for preparing nanomaterials by using a liquid-phase laser irradiation technique, characterized in that, The device includes: A magnetic stirring table; A rotating table, which is arranged on the magnetic stirring table; A container placement platform, which is arranged on the rotating table; A container, which is arranged on the container placement platform and is used for containing the solution and materials to be irradiated to receive laser irradiation; A stirring magnetic bar, which is placed in the container.

2. The device for preparing nanomaterials by using a liquid-phase laser irradiation technique according to claim 1, characterized in that, The size of the stirring magnetic bar is in a positive correlation with the caliber of the container.

3. The device for preparing nanomaterials by using the liquid-phase laser irradiation technology according to claim 1, characterized in that, The container is a cylindrical container.

4. The apparatus for preparing nanomaterials by using the liquid-phase laser irradiation technique according to claim 1, characterized in that, The stirring magnetic bar is a polygonal stirring magnetic bar.

5. The device for preparing nanomaterials by using the liquid-phase laser irradiation technique according to claim 4, characterized in that, The stirring magnetic bar is an octagonal stirring magnetic bar.

6. The device for preparing nanomaterials by using a liquid-phase laser irradiation technique according to claim 1, wherein, The stirring magnetic bar is an elliptical stirring magnetic bar.

7. An apparatus for preparing nanomaterials using a liquid-phase laser irradiation technique, characterized in that, The equipment includes: The device for preparing nanomaterials by liquid-phase laser irradiation according to any one of claims 1-6; A laser for generating laser; A light guiding component, which is arranged on the optical path between the container and the laser to guide the laser into the solution and materials to be irradiated in the container.

8. The device for preparing nanomaterials by using the liquid-phase laser irradiation technique according to claim 7, characterized in that, The equipment further includes: A sealed cabinet body, which has an accommodating space, and the device for preparing nanomaterials by liquid-phase laser irradiation, the laser and the light guiding component are all arranged in the accommodating space.

9. The device for preparing nanomaterials by using the liquid-phase laser irradiation technique according to claim 8, wherein, The accommodating space of the sealed cabinet body has a partition plate to make the accommodating space form a first sub-accommodating space and a second sub-accommodating space; Wherein, the laser and the light guiding component are arranged in the first sub-accommodating space, the device is arranged in the second sub-accommodating space, and the laser generated by the laser is projected onto the solution and materials to be irradiated in the container through the light guiding component and the light passing hole of the partition plate.

10. The device for preparing nanomaterials by using a liquid-phase laser irradiation technique according to claim 8, characterized in that, The sealed cabinet body further includes: A human-computer interaction terminal, which is respectively connected to the magnetic stirring table, the rotating table and the laser.

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