Preparation method of independent titanium dioxide nanotube array film

A nanotube array and titanium dioxide technology, which is applied in the field of preparation of independent titanium dioxide nanotube array films, can solve the problems of difficulty in obtaining large-area titanium dioxide films, slow reaction speed, complex process, etc., and achieve wide application range, low cost, The effect of large film area

Inactive Publication Date: 2012-09-19
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The physical methods mainly include solvent evaporation to separate the film, ultrasonic vibration to separate the film or directly stick it with tape. It is difficult to obtain a large-area and complete independent titanium dioxide film by physical methods, and it is often impossible to separate it; chemical methods include secondary anodic oxidation and The method of chemical solution dissolution, the secondary anodic oxidation method separates the film by changing the voltage or temperature, but the process is relatively complicated, and the solutions used for solution dissolution mainly include hydrogen peroxide, hydrochloric acid, etc., and the reaction speed is relatively slow

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  • Preparation method of independent titanium dioxide nanotube array film
  • Preparation method of independent titanium dioxide nanotube array film
  • Preparation method of independent titanium dioxide nanotube array film

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Effect test

Embodiment 1

[0015] Make the area 60x55mm 2 , a polished pure titanium sheet with a thickness of 0.5mm was ultrasonically cleaned in acetone, ethanol and deionized water for 10min in sequence; As the anode, the platinum electrode is used as the cathode, the electrode distance is 3cm, the voltage is 60V, the electrolytic cell is kept at a constant temperature of 25°C, anodized for 10h, and the electrolyte is continuously stirred during the treatment process; the obtained sample is ultrasonically cleaned in ethanol, and then immersed in 100ml Mass fraction of 1% hydrofluoric acid solution, stand at 25°C for 2 minutes, the film is separated from the titanium sheet, the titanium dioxide film is taken out and rinsed with deionized water until it is neutral; finally, the dried film is heat-treated in an air atmosphere, and the heating rate is 10°C / min, hold at 450°C for 30 minutes, and cool to room temperature with the furnace. Finally, an independent anatase titanium dioxide nanotube array fil...

Embodiment 2

[0018] Make the area 60x55mm 2 , a polished pure titanium sheet with a thickness of 0.5mm was ultrasonically cleaned in acetone, ethanol and deionized water for 10min in sequence; As the anode, the platinum electrode is used as the cathode, the electrode distance is 3cm, the voltage is 60V, the electrolytic cell is kept at a constant temperature of 25°C, anodized for 24h, and the electrolyte is continuously stirred during the treatment process; the obtained sample is ultrasonically cleaned in ethanol, and then immersed in 100ml The mass fraction of 4% hydrofluoric acid solution, let stand at 25°C for 1min, the film is separated from the titanium sheet, and the titanium dioxide film is taken out and rinsed with deionized water until it is neutral; finally, the dried film is heat-treated in an air atmosphere, and the heating rate is 10°C / min, keep warm at 400°C for 30min, and cool to room temperature with the furnace. Finally, an independent anatase titanium dioxide nanotube ar...

Embodiment 3

[0021] Make the area 60x55mm 2 , a polished pure titanium sheet with a thickness of 0.5 mm was ultrasonically cleaned in acetone, ethanol and deionized water for 10 min in sequence; As the anode, the platinum electrode is used as the cathode, the electrode distance is 3cm, the voltage is 50V, the electrolytic cell is kept at a constant temperature of 25°C, anodized for 8h, and the electrolyte is continuously stirred during the treatment process; the obtained sample is ultrasonically cleaned in ethanol, and then immersed in 100ml Mass fraction of 1% hydrofluoric acid solution, let stand at 25°C for 1min, separate the film from the titanium sheet, take out the titanium dioxide film and wash it with deionized water until neutral; finally heat-treat the dried film in air atmosphere, the heating rate 10°C / min, keep warm at 400°C for 30min, and cool to room temperature with the furnace. Finally, an independent anatase titanium dioxide nanotube array film is obtained, the film thick...

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Abstract

The invention discloses a preparation method of an independent titanium dioxide nanotube array film. The film preparation process comprises oxidizing a pure titanium anode to obtain a titanium dioxide nanotube array film, utilizing hydrofluoric acid solution to immerse the film to enable the film to be separated from a titanium matrix to obtain an independent amorphous titanium dioxide nanotube array film, then washing the independent amorphous titanium dioxide nanotube array film through deionized water, and performing calcination to obtain the independent anatase type titanium dioxide nanotube array film. The preparation method is simple in process and convenient to operate. The thickness of the titanium dioxide film can be controlled by controlling oxidizing time of the anode, and the diameter of the titanium dioxide film can be controlled by changing oxidizing voltage of the anode. Compared with a titanium dioxide nanotube array film with a titanium sheet serving as a substrate, the independent titanium dioxide nanotube array film has large area, can be transferred to a transparent flexible substrate, and has wide application range.

Description

technical field [0001] The invention relates to a preparation method of an independent titanium dioxide nanotube array film, which belongs to the preparation technology of titanium dioxide nanometer materials. Background technique [0002] The one-dimensional ordered titanium dioxide nanotube array structure is widely used in the fields of solar cells, hydrogen production, photocatalysis, sensors and biochemistry due to its unique morphology and energy band structure characteristics, but due to the preparation by anodic oxidation Titanium dioxide nanotubes are based on titanium sheets, which limits their application. Therefore, a simple and effective method is needed to obtain independent titanium dioxide nanotube array films. [0003] At present, the preparation of titanium dioxide nanotube array films mainly adopts anodic oxidation method, which can obtain a certain thickness of titanium dioxide nanotube array films on titanium sheets, and then separate the films by physic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/26
Inventor 赵乃勤初飞李家俊师春生刘恩佐何春年
Owner TIANJIN UNIV
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