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CN-122013276-A - Device and method for preparing titanium dioxide nanotubes by ultraviolet synchronous irradiation and anodic oxidation

CN122013276ACN 122013276 ACN122013276 ACN 122013276ACN-122013276-A

Abstract

The invention relates to a device and a method for preparing a titanium dioxide nanotube by ultraviolet light synchronous irradiation anodic oxidation, comprising a light source device, an optical lens, a platinum screen electrode, a pure titanium electrode, an electrolyte tank with electrolyte and a power supply, wherein the platinum screen electrode is used as a cathode and is connected with the cathode of the power supply, the pure titanium electrode is used as an anode and is connected with the anode of the power supply, the light source device couples a light beam of ultraviolet light into the electrolyte tank electrolyte through the optical lens through an optical fiber for transmitting the ultraviolet light, the ultraviolet light passes through the platinum screen electrode and irradiates the surface of the pure titanium electrode, and the titanium dioxide nanotube with higher photocatalytic performance is obtained after being treated for a period of time under constant direct current voltage, so that the device for preparing the titanium dioxide nanotube by ultraviolet light synchronous irradiation anodic oxidation is beneficial to popularization and application in the technical field of composite electrochemical processing. Compared with the traditional method, the preparation method can effectively reduce energy consumption, synchronously reduce equipment cost and operation complexity, and is beneficial to mass production of nanotubes.

Inventors

  • WU GUOLONG
  • LIU FENG
  • YAO JIANHUA
  • ZHENG YAFENG
  • Xiang Yihou

Assignees

  • 浙江工业大学

Dates

Publication Date
20260512
Application Date
20260204

Claims (10)

  1. 1. The device for preparing the titanium dioxide nanotube by ultraviolet synchronous irradiation anodic oxidation is characterized by comprising light source equipment (1) capable of providing ultraviolet light, an optical lens (2) with high light transmittance and acid and alkali resistance, a platinum screen electrode (3), a pure titanium electrode (4), an electrolyte tank (5) with electrolyte and a power supply (6), wherein the platinum screen electrode (3) is used as a cathode and is connected with the cathode of the power supply (6), the pure titanium electrode (4) is used as an anode and is connected with the anode of the power supply (6), the light source equipment (1) couples a light beam of ultraviolet light into the electrolyte tank (5) through an optical lens (2) through an optical fiber for transmitting the ultraviolet light, and the ultraviolet light passes through the platinum screen electrode (3) and is irradiated on the surface of the pure titanium electrode (4) and forms a nanoscale structure after being processed for a period of time under constant direct current voltage.
  2. 2. The device for preparing titanium dioxide nanotubes by ultraviolet light synchronous irradiation anodic oxidation according to claim 1, wherein the constant direct current voltage is 60V, and the period of time is 30min.
  3. 3. The device for preparing the titanium dioxide nanotubes by ultraviolet light synchronous irradiation anodic oxidation according to claim 1, wherein the platinum mesh electrode (3) and the pure titanium electrode (4) are arranged at intervals of 20mm.
  4. 4. The device for preparing titanium dioxide nanotubes by ultraviolet light synchronous irradiation anodic oxidation according to claim 1, wherein the electrolyte in the electrolyte tank (5) consists of 0.5wt% of ammonium fluoride, 2wt% of water and 97.5wt% of ethylene glycol.
  5. 5. The device for preparing the titanium dioxide nanotube by ultraviolet synchronous irradiation anodic oxidation according to claim 1, wherein an electrode clamp hole row (7) is arranged above the electrolyte tank (5), a cathode electrode clamp (8) and an anode electrode clamp (9) are arranged on the electrode clamp hole row (7), the cathode electrode clamp (8) is used for clamping the platinum screen electrode (3), the anode electrode clamp (9) is used for clamping the pure titanium electrode (4), and the depth of the platinum screen 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).
  6. 6. The apparatus for preparing titanium dioxide nanotubes by ultraviolet light synchronous irradiation anodic oxidation according to claim 5, wherein the electrode clamp hole row (7) is provided with a plurality of mounting holes, and 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. 7. The device for preparing the titanium dioxide nanotube by ultraviolet synchronous irradiation anodic oxidation according to claim 1, wherein 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 positioned on the same central axis.
  8. 8. The device for preparing the titanium dioxide nanotubes by ultraviolet synchronous irradiation anodic oxidation according to claim 1, wherein a magnetic stirrer (10) is arranged at the bottom of the electrolyte tank (5), and a stirring rotor (11) of the magnetic stirrer (10) extends into the electrolyte tank (5).
  9. 9. The device for preparing titanium dioxide nanotubes by ultraviolet light synchronous irradiation anodic oxidation according to claim 1, wherein the light source device (1) is a light emitting diode device capable of emitting ultraviolet rays with the wavelength of 365 nm.
  10. 10. A method for preparing a titanium dioxide nanotube by ultraviolet synchronous irradiation anodic oxidation is characterized by comprising the following steps of S1 preparing a sample, cutting, polishing, cleaning and drying pure titanium to obtain a sample to be polished, S2 preparing an anodic oxidation electrolyte, wherein the specific composition of the anodic oxidation electrolyte is 0.5wt% of ammonium fluoride, 2wt% of water and 97.5wt% of ethylene glycol, controlling the electric parameters through a power supply (6), the electric parameters are in a constant voltage mode, the specific voltage is 60V, S3, pouring the prepared anodic oxidation electrolyte into an electrolyte tank (5), adjusting the distance between a platinum net electrode (3) and the pure titanium electrode (4) to be 20mm, providing constant voltage mode voltage through the power supply, inputting the electric parameters, setting the light intensity parameters by a light source device (1), enabling light beams to vertically irradiate the surfaces of the platinum net electrode (3) and the pure titanium electrode (4) in sequence, realizing the synchronous anodic oxidation of the titanium electrode (4), and drying the surface of the sample after the experiment of the pure titanium electrode (4) is finished.

Description

Device and method for preparing titanium dioxide nanotubes by ultraviolet synchronous irradiation and anodic oxidation Technical Field The invention relates to the technical field of composite electrochemical machining, in particular to a device and a treatment method for preparing a titanium dioxide nanotube by ultraviolet synchronous irradiation and anodic oxidation. Background With the rapid development of industrial technology and economy, environmental pollution and energy shortage have become double challenges restricting sustainable development of human society. In the ecological treatment level, the unordered discharge of industrial wastewater and domestic sewage leads to serious damage of a water body ecological system, and threatens the health and ecological balance of human beings. Under the background, the development of an advanced technology system with environmental remediation becomes an important direction of global scientific research. The titanium dioxide nanotube has the advantages of large specific surface, high photocatalytic activity, strong adsorption capacity, good photoelectric conversion capacity, excellent light stability, excellent chemical stability and the like, and has wide application prospect in the field of photocatalysis. However, titanium dioxide has a broad forbidden bandwidth and can be excited only in the ultraviolet band with high energy. Therefore, the development of the titanium dioxide nanotube array with a narrow forbidden bandwidth is of great importance for the full application of the titanium dioxide nanotube array in the field of photocatalysis. The anodic oxidation method is an excellent method for preparing the titanium dioxide nanotubes, and the method takes the treated titanium plate as an anode of an electrolytic reaction, takes inert metal as a cathode, and carries out electrolysis for a certain time in an electrolyte containing fluorine ions, so that a nanotube array can be grown on the surface of the titanium plate. The anodic oxidation condition plays a main role in regulating the morphology structure of the nanotube, and comprises parameters such as voltage, current, temperature, time, electrolyte composition and the like. The titanium dioxide nanotube prepared by single anodic oxidation lacks photocatalytic activity due to the amorphous form, and the amorphous titanium dioxide can be converted into a high-activity anatase phase by a traditional method through high-temperature annealing (> 450 ℃). Ultraviolet light excitation can increase the number of photo-generated free electron-hole pairs, promote the gas adsorption and desorption process and enhance the surface reaction activity, thereby obviously improving the photoelectric property or the photocatalytic activity of the metal oxide. Research shows that ultraviolet light is introduced to directly irradiate during the anodic oxidation preparation process, and the action of light on electrolyte components can be utilized to induce photochemical recombination and promote the growth of nanotubes, so that the titanium dioxide nanotubes with higher photocatalytic performance are obtained. Based on the principle, the invention provides a device and a method for preparing the titanium dioxide nanotube by ultraviolet synchronous irradiation and anodic oxidation on the basis of the prior art. Disclosure of Invention In order to overcome the defects in the prior art, the first invention aims to provide a device for preparing titanium dioxide nanotubes by ultraviolet synchronous irradiation anodic oxidation, which directly irradiates ultraviolet light in the preparation process, utilizes the action of the ultraviolet light on electrolyte components to induce photochemical recombination and promote the growth of the nanotubes in the anodic oxidation process, thereby obtaining titanium dioxide nanotubes with higher photocatalytic performance and being beneficial to the popularization and application of the device for preparing the titanium dioxide nanotubes by ultraviolet synchronous irradiation anodic oxidation in the technical field of composite electrochemical processing. The second invention aims to provide a method for preparing the titanium dioxide nanotube by ultraviolet synchronous irradiation anodic oxidation, which is applied to the device for preparing the titanium dioxide nanotube by ultraviolet synchronous irradiation anodic oxidation, can obviously improve the growth rate and the length of the nanotube, shorten the preparation period, effectively enhance the order degree and the structural uniformity of the nanotube, provide a high-repeatability substrate for subsequent photocatalysis and biological application, integrate an ultraviolet light source and an electrochemical system, and realize the preparation of the high-performance nanotube by a one-step method without subsequent heat treatment. The device for preparing the titanium dioxide nanotube by ultraviolet synchronous irradiation and ano