Device and method for preparing titanium dioxide nanotube through ultraviolet light synchronous irradiation and anodic oxidation

Abstract

The device comprises a light source device, an optical lens, a platinum net electrode, a pure titanium electrode, an electrolyte tank with electrolyte and a power source, the platinum net electrode serves as a cathode and is connected with a negative electrode of the power source, and the pure titanium electrode serves as an anode and is connected with a positive electrode of the power source. The light source equipment couples a light beam of ultraviolet light into an electrolyte in the electrolyte tank through the optical lens by virtue of the optical fiber for transmitting the ultraviolet light, and the ultraviolet light irradiates the surface of the pure titanium electrode after penetrating through the platinum net electrode and is treated for a period of time under constant direct-current voltage to obtain a titanium dioxide nanotube with higher photocatalytic performance; and popularization and application of the device for preparing the titanium dioxide nanotube through ultraviolet light synchronous irradiation and anodic oxidation in the technical field of composite electrochemical machining are facilitated. Compared with a traditional method, the preparation method has the advantages that the energy consumption can be effectively reduced, the equipment cost and the operation complexity are synchronously reduced, and large-scale production of nanotubes is facilitated.

Description

Technical Field

[0001] This invention relates to the field of composite electrochemical processing technology, particularly nanotube processing, and specifically to an apparatus and method for preparing titanium dioxide nanotubes by ultraviolet synchronous irradiation anodizing. Background Technology

[0002] With the rapid development of industrial technology and the economy, environmental pollution and energy shortages have become a dual challenge restricting the sustainable development of human society. At the level of ecological governance, the disorderly discharge of industrial wastewater and domestic sewage has severely damaged aquatic ecosystems, threatening human health and ecological balance. Against this backdrop, developing advanced environmental remediation technologies has become a key focus of global scientific research.

[0003] Titanium dioxide nanotubes possess advantages such as large specific surface area, high photocatalytic activity, strong adsorption capacity, good photoelectric conversion ability, and excellent photostability and chemical stability, making them promising candidates for photocatalysis. However, titanium dioxide has a relatively wide bandgap, meaning it can only be excited in the high-energy ultraviolet band. Therefore, developing titanium dioxide nanotube arrays with narrower bandgap is crucial for their full application in photocatalysis.

[0004] Anodizing is an excellent method for preparing titanium dioxide nanotubes. This method uses a treated titanium plate as the anode and an inert metal as the cathode, electrolyzing in a fluoride-containing organic electrolyte for a certain time to grow nanotube arrays on the titanium plate surface. The anodizing conditions, including voltage, current, temperature, time, and electrolyte composition, play a major role in controlling the morphology and structure of the nanotubes.

[0005] Titanium dioxide nanotubes prepared by single anodizing lack photocatalytic activity due to their amorphous morphology. Traditional methods require high-temperature annealing (>450℃) to transform the amorphous titanium dioxide into a highly active anatase phase. Ultraviolet (UV) excitation can increase the number of photogenerated free electron-hole pairs, promote gas adsorption and desorption processes, and enhance surface reactivity, thereby significantly improving the photoelectric properties or photocatalytic activity of metal oxides. Studies have shown that introducing direct UV irradiation during the anodizing process can utilize the effect of light on electrolyte components to induce photochemical recombination, promoting nanotube growth and thus obtaining titanium dioxide nanotubes with higher photocatalytic performance. Based on the above principles, this invention provides an apparatus and method for preparing titanium dioxide nanotubes by simultaneous UV irradiation anodizing, building upon existing technologies. Summary of the Invention

[0006] To overcome the shortcomings of the prior art, the first objective of this invention is to provide an apparatus for preparing titanium dioxide nanotubes by simultaneous ultraviolet irradiation anodizing. This apparatus directly irradiates the nanotubes with ultraviolet light during the preparation process, utilizing the effect of ultraviolet light on the electrolyte components to induce photochemical recombination and promote the growth of nanotubes during the anodizing process. This results in titanium dioxide nanotubes with higher photocatalytic performance, which is beneficial for the promotion and application of the aforementioned apparatus for preparing titanium dioxide nanotubes by simultaneous ultraviolet irradiation anodizing in the field of composite electrochemical processing technology. The second objective of this invention is to provide a method for preparing titanium dioxide nanotubes by simultaneous ultraviolet irradiation anodization. Using the aforementioned apparatus for preparing titanium dioxide nanotubes by simultaneous ultraviolet irradiation anodization can significantly improve the growth rate and length of nanotubes, shorten the preparation cycle, and effectively enhance the orderliness and structural uniformity of nanotubes, providing a highly reproducible substrate for subsequent photocatalytic and biological applications. Furthermore, the apparatus integrates an ultraviolet light source and an electrochemical system, enabling one-step preparation of high-performance nanotubes without subsequent heat treatment. Compared with traditional methods, this effectively reduces energy consumption, equipment costs, and operational complexity, facilitating the large-scale production of the aforementioned nanotubes.

[0007] The aforementioned apparatus for preparing titanium dioxide nanotubes by simultaneous ultraviolet irradiation anodizing is technically related to the aforementioned method for preparing titanium dioxide nanotubes by simultaneous ultraviolet irradiation anodizing, and belongs to the same inventive concept.

[0008] To achieve the first objective mentioned above, the present invention employs the following technical solution: an apparatus for preparing titanium dioxide nanotubes by synchronous ultraviolet irradiation anodization, comprising a light source capable of providing ultraviolet light, an optical lens with high light transmittance and acid and alkali resistance, a platinum mesh electrode, a pure titanium electrode, an electrolyte tank containing an electrolyte, and a power supply. The platinum mesh electrode serves as the cathode and is connected to the negative terminal of the power supply, and the pure titanium electrode serves as the anode and is connected to the positive terminal of the power supply. The light source couples a beam of ultraviolet light into the electrolyte in the electrolyte tank through the optical lens via an optical fiber that transmits ultraviolet light. After passing through the platinum mesh electrode, the ultraviolet light irradiates the surface of the pure titanium electrode, and after being treated under a constant DC voltage for a period of time, a nanoscale structure is formed.

[0009] In a preferred embodiment of the present invention, the constant DC voltage is 60 V and the time period is 30 min.

[0010] In a preferred embodiment of the present invention, the platinum mesh electrode and the pure titanium electrode are spaced apart by a distance of 20 mm.

[0011] As a preferred embodiment of the present invention, the electrolyte in the electrolyte tank is composed of 0.5 wt% ammonium fluoride, 2 wt% water and 97.5 wt% ethylene glycol.

[0012] In a preferred embodiment of the present invention, an electrode clamp hole array is installed above the electrolyte tank. The electrode clamp hole array is equipped with a cathode electrode clamp and an anode electrode clamp. The cathode electrode clamp is used to clamp the platinum mesh electrode, and the anode electrode clamp is used to clamp the pure titanium electrode. The depth of the platinum mesh electrode and the pure titanium electrode in the electrolyte can be adjusted by adjusting the position of the cathode electrode clamp and the anode electrode clamp on the electrode clamp hole array.

[0013] As a preferred embodiment of the present invention, the electrode clamp hole array has multiple mounting holes, and the spacing between the platinum mesh electrode and the pure titanium electrode is adjusted by mounting the cathode electrode clamp and the anode electrode clamp in different mounting holes.

[0014] In a preferred embodiment of the present invention, the centers of the light outlet of the light source device, the optical lens, the platinum mesh electrode, and the pure titanium electrode are located on the same central axis.

[0015] As a preferred embodiment of the present invention, a magnetic stirrer is installed at the bottom of the electrolyte tank, and the stirring rotor of the magnetic stirrer extends into the interior of the electrolyte tank.

[0016] As a preferred embodiment of the present invention, the light source device is a light-emitting diode device capable of emitting ultraviolet light with a wavelength of 365nm.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: The device for preparing titanium dioxide nanotubes by ultraviolet synchronous irradiation anodizing in the present invention has an ingenious structure. By setting up a light source device, optical lenses, platinum mesh electrodes, pure titanium electrodes, an electrolyte tank containing electrolyte, and a power supply, the platinum mesh electrode is used as the cathode and the pure titanium electrode as the anode. During the preparation process, the ultraviolet light emitted by the light source device can directly irradiate the surfaces of the platinum mesh electrode and the pure titanium electrode. Furthermore, by utilizing the effect of ultraviolet light on the electrolyte components, photochemical recombination is induced, promoting the growth of nanotubes during the anodizing process, thereby obtaining titanium dioxide nanotubes with higher photocatalytic performance. This is conducive to the promotion and application of the above-mentioned device for preparing titanium dioxide nanotubes by ultraviolet synchronous irradiation anodizing in the field of composite electrochemical processing technology.

[0018] Furthermore, by installing a magnetic stirrer in the electrolyte tank, the present invention can effectively suppress local concentration gradients in the electrolyte and ensure the uniformity of the electrolyte during the reaction process.

[0019] To achieve the second objective mentioned above, the present invention employs the following technical solution: a method for preparing titanium dioxide nanotubes by synchrotron ultraviolet irradiation anodizing, comprising the following steps:

[0020] S1. Sample preparation: Pure titanium is cut, polished, cleaned and dried to obtain the sample to be polished.

[0021] S2. Prepare the anodic oxidation electrolyte. The specific composition of the anodic oxidation electrolyte is 0.5wt% ammonium fluoride, 2wt% water and 97.5wt% ethylene glycol. The electrical parameters are controlled by the power supply in constant voltage mode, with a specific voltage of 60V.

[0022] S3. Pour the prepared anodic oxidation electrolyte into the electrolyte tank, and adjust the distance between the platinum mesh electrode and the pure titanium electrode to 20mm. Then, provide constant voltage mode voltage through the power supply and input electrical parameters. Set the light intensity parameters of the light source device so that the beam of light is vertically and sequentially irradiated on the surface of the platinum mesh electrode and the pure titanium electrode to achieve simultaneous ultraviolet light-assisted anodic oxidation treatment of the pure titanium electrode surface.

[0023] S4. After the experiment, clean the sample surface with alcohol and dry it.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows: The method for preparing titanium dioxide nanotubes by ultraviolet synchronous irradiation anodizing in the present invention, by using the above-mentioned device for preparing titanium dioxide nanotubes by ultraviolet synchronous irradiation anodizing, can significantly improve the growth rate and length of nanotubes, shorten the preparation cycle, and effectively enhance the orderliness and structural uniformity of nanotubes, providing a highly reproducible substrate for subsequent photocatalytic and biological applications. At the same time, the above-mentioned device integrates ultraviolet light source and electrochemical system, and can realize the one-step preparation of high-performance nanotubes without subsequent heat treatment. Compared with traditional methods, it can effectively reduce energy consumption, and the equipment cost and operation complexity are reduced simultaneously, which is conducive to the large-scale production of the above-mentioned nanotubes. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of an apparatus for preparing titanium dioxide nanotubes by ultraviolet synchronous irradiation anodizing in an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of a state without ultraviolet radiation.

[0027] Figure 3 This is a schematic diagram showing the state of ultraviolet radiation.

[0028] Figure 4 This is a comparison chart showing the process of secondary anodizing with and without ultraviolet light.

[0029] Figure 5 This is a comparison chart of photocurrent density with and without ultraviolet light.

[0030] Reference numerals: 1. Light source device; 2. Optical lens; 3. Platinum mesh electrode; 4. Pure titanium electrode; 5. Electrolyte tank; 6. Power supply; 7. Electrode clamp hole array; 8. Cathode electrode clamp; 9. Anode electrode clamp; 10. Magnetic stirrer; 11. Stirring rotor. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the invention is described below with reference to specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0032] In the description of this invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0033] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0034] Titanium dioxide nanotubes prepared by single anodizing lack photocatalytic activity due to their amorphous morphology. Traditional methods require high-temperature annealing (>450℃) to transform amorphous titanium dioxide into a highly active anatase phase, which is time-consuming and labor-intensive.

[0035] Example: Figures 1 to 5As shown, to solve the above-mentioned technical problems, this embodiment provides an apparatus for preparing titanium dioxide nanotubes by synchrotron ultraviolet irradiation anodizing. The apparatus mainly consists of a light source device 1, an optical lens 2, a platinum mesh electrode 3, a pure titanium electrode 4, an electrolyte tank 5 containing an electrolyte, and a power supply 6. The light source device 1 provides a synchrotron ultraviolet light source. The optical lens 2 has high light transmittance and is resistant to acids and alkalis, enabling it to focus ultraviolet light while also homogenizing the light field distribution. The platinum mesh electrode 3 serves as the cathode and is connected to the negative terminal of the power supply 6, achieving both conductivity and corrosion resistance, thereby ensuring the accuracy of experimental results. The pure titanium electrode 4 serves as the anode and is connected to the positive terminal of the power supply 6, acting as the growth substrate for the titanium dioxide nanotubes. The electrolyte in the electrolyte tank 5 provides the reaction environment for anodizing. The power supply 6 provides the necessary constant voltage for the anodizing reaction. The aforementioned light source device 1 transmits ultraviolet light via an optical fiber, coupled through the optical lens 2 into the electrolyte in the electrolyte tank 5. The ultraviolet light passes through the platinum mesh electrode 3 and irradiates the surface of the pure titanium electrode 4. After being treated under a constant DC voltage for a period of time, a titanium dioxide nanotube film with photocatalytic properties is formed. In this embodiment, the device, during the preparation process, utilizes direct ultraviolet irradiation to induce photochemical recombination by leveraging the effect of ultraviolet light on the electrolyte components, promoting the growth of nanotubes during anodic oxidation, thereby obtaining titanium dioxide nanotubes with higher photocatalytic performance.

[0036] To form a standard nanotube array, in this embodiment, the constant DC voltage is designed to be 60 V, and the time period is designed to be 30 min. If the DC voltage is less than 20 V, a porous membrane structure will be formed; if the DC voltage is between 20 V and 40 V, short nanotubes will be formed, that is, the length of the nanotubes is less than 1 μm, and the continuity is poor; if the DC voltage is between 40 V and 60 V, a standard nanotube array can be formed.

[0037] In this embodiment, the light source device 1 is a light-emitting diode device that can emit ultraviolet light with a wavelength of 365nm, specifically a 365nm LED cold light source, which can effectively excite titanium dioxide to generate electron-hole pairs, and the wavelength is short enough to ensure effective excitation, but not so short as to waste energy.

[0038] In this embodiment, the electrolyte tank 5 can be a quartz glass beaker with high light transmittance, which allows the ultraviolet light emitted by the light source device 1 to pass through the tank wall of the electrolyte tank 5 and directly irradiate the side of the electrode, reducing light loss. In addition, quartz glass is an excellent insulator, ensuring that the current only passes through the electrode and electrolyte circuit, without leakage loss, and avoiding the safety hazard caused by the tank being electrified.

[0039] In order to ensure that the ultraviolet light emitted by the light source device 1 can be transmitted efficiently, in this embodiment, the centers of the light outlet of the light source device 1, the optical lens 2, the platinum mesh electrode 3 and the pure titanium electrode 4 are located on the same central axis, thereby avoiding the impact on the growth of titanium dioxide nanotubes due to eccentric lighting and other reasons.

[0040] In this embodiment, the platinum mesh electrode 3 and the pure titanium electrode 4 are spaced 20 mm apart. If the distance is less than 10 mm, the liquid surface reflection will interfere with the ultraviolet light; if it is greater than 50 mm, it will cause significant attenuation of the ultraviolet light. Therefore, in this embodiment, the distance between the platinum mesh electrode 3 and the pure titanium electrode 4 is designed to be 20 mm, which is a moderate distance. This distance allows the diffused light emitted by the light source device 1 to still partially reach the anode, and provides sufficient space for hydrogen bubbles in the electrolyte to escape, preventing the bubbles from interfering with the light path.

[0041] In this embodiment, the electrolyte in the electrolyte tank 5 consists of 0.5 wt% ammonium fluoride, 2 wt% water, and 97.5 wt% ethylene glycol. Ethylene glycol, as a high-viscosity organic solvent, has a much lower ion diffusion rate than aqueous solutions. Without stirring, fluoride ions are continuously consumed on the titanium electrode surface, leading to a sharp drop in local fluoride ion concentration and inhibiting local dissolution of the oxide film. Simultaneously, the complexes generated in the reaction cannot diffuse and be removed in time, resulting in interfacial enrichment. Therefore, in this embodiment, a magnetic stirrer 10 is installed at the bottom of the electrolyte tank 5, and the stirring rotor 11 of the magnetic stirrer 10 extends into the interior of the electrolyte tank 5.

[0042] To facilitate the fixing of the platinum mesh electrode 3 and the pure titanium electrode 4, and to allow for easy adjustment of their positions, an electrode clamp hole row 7 is installed above the electrolyte tank 5 in this embodiment. The electrode clamp hole row 7 is equipped with a cathode electrode clamp 8 and an anode electrode clamp 9. The cathode electrode clamp 8 is used to clamp the platinum mesh electrode 3, and the anode electrode clamp 9 is used to clamp the pure titanium electrode 4. The depth of the platinum mesh electrode 3 and the pure titanium electrode 4 in the electrolyte can be adjusted by adjusting the positions of the cathode electrode clamp 8 and the anode electrode clamp 9 on the electrode clamp hole row 7. The electrode clamp hole row 7 has multiple mounting holes, and the distance between the platinum mesh electrode 3 and the pure titanium electrode 4 can be adjusted by installing the cathode electrode clamp 8 and the anode electrode clamp 9 into different mounting holes.

[0043] This embodiment presents an apparatus for preparing titanium dioxide nanotubes by simultaneous ultraviolet irradiation anodizing. The apparatus features an ingenious structure, comprising a light source 1, optical lenses 2, a platinum mesh electrode 3, a pure titanium electrode 4, an electrolyte tank 5 containing electrolyte, and a power supply 6. The platinum mesh electrode 3 serves as the cathode, and the pure titanium electrode 4 as the anode. During the preparation process, the ultraviolet light emitted by the light source 1 directly irradiates the surfaces of the platinum mesh electrode and the pure titanium electrode. Furthermore, the ultraviolet light influences the electrolyte components, inducing photochemical recombination and promoting nanotube growth during anodizing. This results in titanium dioxide nanotubes with higher photocatalytic performance, facilitating the promotion and application of this simultaneous ultraviolet irradiation anodizing apparatus in the field of composite electrochemical processing technology.

[0044] This embodiment describes a method for preparing titanium dioxide nanotubes by synchrotron ultraviolet irradiation anodizing, which includes the following steps:

[0045] S1. Prepare the sample by cutting, grinding, cleaning and drying the pure titanium to obtain the sample to be polished, namely the pure titanium electrode 4 mentioned above.

[0046] S2. Prepare the anodic oxidation electrolyte. The specific composition of the anodic oxidation electrolyte is 0.5wt% ammonium fluoride, 2wt% water and 97.5wt% ethylene glycol. The electrical parameters are controlled by power supply 6. The electrical parameters are in constant voltage mode, and the specific voltage is 60V.

[0047] S3. Pour the prepared anodic oxidation electrolyte into the electrolyte tank 5, and adjust the distance between the platinum mesh electrode 3 and the pure titanium electrode 4 to 20mm. Then, provide a constant voltage mode voltage through the power supply and input the electrical parameters. The specific voltage parameter is 60V and the time parameter is set to 900S. Set the light intensity parameter of the light source device 1 so that the light beam is vertically and sequentially irradiated on the surface of the platinum mesh electrode 3 and the pure titanium electrode 4 to achieve simultaneous ultraviolet light-assisted anodic oxidation treatment on the surface of the pure titanium electrode 4.

[0048] S4. First, perform a single anodizing process to grow a titanium dioxide film on the pure titanium substrate of the anode.

[0049] S5. The sample prepared by the first anodizing is ultrasonically cleaned at 70 kHz for 15 min to remove the titanium dioxide film layer prepared on the surface of pure titanium, leaving only the micropores or pits generated by fluorine ion etching on the pure titanium substrate during the anodizing process.

[0050] S6. Same as S2 above. While inputting electrical parameters, ultraviolet light is simultaneously irradiated. The ultraviolet light intensity parameter is set to 30W. The light is irradiated onto the anode substrate surface through optical lens 2. Through the design of ultraviolet light energy distribution, the anode surface anodic oxidation and ultraviolet light radiation are carried out simultaneously, thereby completing the ultraviolet light-assisted anodic oxidation synchronous enhancement treatment, and finally forming a titanium dioxide nanotube photocatalytic film layer on the anode surface.

[0051] S5. After the experiment, clean the sample surface with alcohol and dry it.

[0052] This embodiment describes a method for preparing titanium dioxide nanotubes by synchronizing ultraviolet light irradiation anodization. By employing the aforementioned apparatus for preparing titanium dioxide nanotubes by synchronizing ultraviolet light irradiation anodization, the growth rate and length of nanotubes can be significantly improved, the preparation cycle can be shortened, and the orderliness and structural uniformity of nanotubes can be effectively enhanced, providing a highly reproducible substrate for subsequent photocatalytic and biological applications. At the same time, the aforementioned apparatus integrates an ultraviolet light source and an electrochemical system, enabling the one-step preparation of high-performance nanotubes without subsequent heat treatment. Compared with traditional methods, it can effectively reduce energy consumption, and the equipment cost and operational complexity are reduced simultaneously, which is conducive to the large-scale production of the aforementioned nanotubes.

[0053] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention; therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0054] Although this document uses numerous reference numerals from the figures, including 1. Light source device; 2. Optical lens; 3. Platinum mesh electrode; 4. Pure titanium electrode; 5. Electrolyte tank; 6. Power supply; 7. Electrode clamp hole array; 8. Cathode electrode clamp; 9. Anode electrode clamp; 10. Magnetic stirrer; and 11. Stirring rotor, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of the invention; interpreting them as any additional limitation would contradict the spirit of the invention.

Claims

1. An apparatus for preparing titanium dioxide nanotubes by synchronous ultraviolet irradiation anodizing, characterized in that: The device includes a light source (1) capable of providing ultraviolet light, an optical lens (2) with high light transmittance and acid and alkali resistance, a platinum mesh electrode (3), a pure titanium electrode (4), an electrolyte tank (5) containing an electrolyte, and a power supply (6). The platinum mesh electrode (3) serves as the cathode and is connected to the negative terminal of the power supply (6). The pure titanium electrode (4) serves as the anode and is connected to the positive terminal of the power supply (6). The light source (1) couples the beam of ultraviolet light into the electrolyte of the electrolyte tank (5) through the optical lens (2) via an optical fiber that transmits ultraviolet light. After passing through the platinum mesh electrode (3), the ultraviolet light irradiates the surface of the pure titanium electrode (4) and forms a nanoscale structure after being treated under a constant DC voltage for a period of time.

2. The apparatus for preparing titanium dioxide nanotubes by synchrotron ultraviolet irradiation anodizing according to claim 1, characterized in that: The constant DC voltage is 60 V, and the time period is 30 min.

3. The apparatus for preparing titanium dioxide nanotubes by ultraviolet synchronous irradiation anodizing according to claim 1, characterized in that: The platinum mesh electrode (3) and the pure titanium electrode (4) are spaced apart by a distance of 20 mm.

4. The apparatus for preparing titanium dioxide nanotubes by ultraviolet synchronous irradiation anodizing according to claim 1, characterized in that: The electrolyte in the electrolyte tank (5) consists of 0.5wt% ammonium fluoride, 2wt% water and 97.5wt% ethylene glycol.

5. The apparatus for preparing titanium dioxide nanotubes by ultraviolet synchronous irradiation anodizing according to claim 1, characterized in that: An electrode clamp hole row (7) is installed above the electrolyte tank (5). The electrode clamp hole row (7) is equipped with a cathode electrode clamp (8) and an anode electrode clamp (9). The cathode electrode clamp (8) is used to clamp the platinum mesh electrode (3), and the anode electrode clamp (9) is used to clamp the pure titanium electrode (4). The depth of the platinum mesh electrode (3) and the pure titanium electrode (4) in the electrolyte can be adjusted by adjusting the position of the cathode electrode clamp (8) and the anode electrode clamp (9) on the electrode clamp hole row (7).

6. The apparatus for preparing titanium dioxide nanotubes by synchrotron ultraviolet irradiation anodizing according to claim 5, characterized in that: The electrode clamp hole row (7) has multiple mounting holes. The spacing between the platinum mesh electrode (3) and the pure titanium electrode (4) is adjusted by mounting the cathode electrode clamp (8) and the anode electrode clamp (9) in different mounting holes.

7. The apparatus for preparing titanium dioxide nanotubes by ultraviolet synchronous irradiation anodizing according to claim 1, characterized in that: The light outlet of the light source device (1), the optical lens (2), the platinum mesh electrode (3), and the pure titanium electrode (4) are located on the same central axis.

8. The apparatus for preparing titanium dioxide nanotubes by ultraviolet synchronous irradiation anodizing according to claim 1, characterized in that: A magnetic stirrer (10) is installed at the bottom of the electrolyte tank (5), and the stirring rotor (11) of the magnetic stirrer (10) extends into the electrolyte tank (5).

9. The apparatus for preparing titanium dioxide nanotubes by synchrotron ultraviolet irradiation anodizing according to claim 1, characterized in that: The light source device (1) is a light-emitting diode device capable of emitting ultraviolet light with a wavelength of 365nm.

10. A method for preparing titanium dioxide nanotubes by synchrotron ultraviolet irradiation anodizing, comprising an apparatus for preparing titanium dioxide nanotubes by synchrotron ultraviolet irradiation anodizing as described in any one of claims 1 to 9; characterized in that: Includes the following steps: S1. Prepare the sample by cutting, grinding, cleaning and drying pure titanium to obtain the sample to be polished; S2. Prepare the anodic oxidation electrolyte. The specific composition of the anodic oxidation electrolyte is 0.5wt% ammonium fluoride, 2wt% water and 97.5wt% ethylene glycol. The electrical parameters are controlled by the power supply (6). The electrical parameters are in constant voltage mode and the specific voltage is 60V; S3. Pour the prepared anodic oxidation electrolyte into the electrolyte tank (5) and adjust the distance between the platinum mesh electrode (3) and the pure titanium electrode (4) to 20mm. Then, provide the constant voltage mode voltage through the power supply and input the electrical parameters; Set the light intensity parameters of the light source device (1) so that the beam is vertically irradiated on the surface of the platinum mesh electrode (3) and the pure titanium electrode (4) in sequence to realize the synchronous treatment of ultraviolet light-assisted anodic oxidation on the surface of the pure titanium electrode (4); S4. After the experiment is completed, clean the sample surface with alcohol and dry it.

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