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Preparation method of titanium dioxide nanotube film

A titanium dioxide and nanotube technology, which is applied in the fields of titanium dioxide, chemical instruments and methods, titanium oxide/hydroxide, etc., can solve the problems of large inner diameter of nanotubes, complicated experimental operations, and tube wall thickness, and achieves good integrity and cost. Inexpensive, simple effects

Inactive Publication Date: 2011-07-06
NORTHWEST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the template method and electrochemical anodic oxidation method are mainly used to prepare titanium dioxide nanotube films. The size and shape of the nanotubes prepared by the template method depend on the size of the template agent. The pores of the template are generally relatively large, and the inner diameter of the nanotubes obtained Larger, thicker tube wall, more complex experimental operation; titanium dioxide nanotubes prepared by anodic oxidation method, order and integrity are better, experimental operation is relatively simple, but the cost is high
TiO2 nanotube thin films have not been prepared by hydrothermal method

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Step 1, raw material pretreatment:

[0028] Cut the pure titanium foil into length×width: 2cm×1cm, put it in acetone solution for ultrasonic cleaning for 10min, and then place it in a molar ratio of HF:HNO 3 :H 2 Polish in a solution of O=1:4:5 for 15 minutes until no bubbles are violently generated, then ultrasonically clean in distilled water for 5 minutes, and dry at room temperature;

[0029] Step two, chemical treatment:

[0030] The pretreated pure titanium foil was placed in a hydrochloric acid solution with a mass fraction of 36%, treated at room temperature for 8 days, then rinsed with distilled water, and dried at room temperature;

[0031] Step three, hydrothermal treatment:

[0032] Put the chemically treated pure titanium foil into a high-pressure reactor, and conduct a hydrothermal reaction for 20 hours in a 5mol / L sodium hydroxide solution at 140°C and a steam pressure of 0.361MPa. After the hydrothermal reaction is completed, take out the titanium she...

Embodiment 2

[0037] Step 1, raw material pretreatment:

[0038] Put the pure titanium foil with a length×width of 2cm×1cm into the acetone solution and ultrasonically clean it for 10min, and then place it in a molar ratio of HF:HNO 3 :H 2 Polish in a solution of O=1:4:5 for 15 minutes until no bubbles are violently generated, then ultrasonically clean in distilled water for 5 minutes, and dry at room temperature;

[0039] Step two, chemical treatment:

[0040] The pretreated pure titanium foil was placed in a hydrochloric acid solution with a mass fraction of 40%, treated at room temperature for 2 days, then rinsed with distilled water, and dried at room temperature;

[0041] Step three, hydrothermal reaction

[0042] Put the chemically treated pure titanium foil into a high-pressure reactor, and conduct a hydrothermal reaction for 25 hours in a 5mol / L sodium hydroxide solution at 170°C and a steam pressure of 0.792MPa. After the hydrothermal reaction is over, take out the titanium shee...

Embodiment 3

[0047] Step 1, raw material pretreatment:

[0048] Put the pure titanium foil with the length × width: 2cm × 1cm in the acetone solution for ultrasonic cleaning for 10min, and then put it in the molar ratio of HF:HNO 3 :H 2 Polish in a mixed solution of O=1:4:5 for 15 minutes until no bubbles are violently generated; then place in distilled water for ultrasonic cleaning for 5 minutes, and dry at room temperature;

[0049] Step two, chemical treatment:

[0050] The pretreated titanium foil was placed in a hydrochloric acid solution with a mass fraction of 30%, treated at room temperature for 5 days, then rinsed with distilled water, and dried at room temperature;

[0051] Step three, hydrothermal treatment:

[0052] Put the chemically treated pure titanium foil into a high-pressure reaction kettle, and conduct a hydrothermal reaction for 30 hours in a 7mol / L sodium hydroxide solution at 150°C and a steam pressure of 0.476MPa, and then wash it repeatedly with distilled water ...

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Abstract

The invention belongs to the technical fields of the preparations of the nanometer material and optoelectronic information material, and in particular relates to a method for preparing a titanium dioxide nanotube film by combining an interfacial chemical reaction with a hydrothermal reaction. In the method, a pure titanium foil is used as a raw material; and the raw material is placed in a high-pressure reaction kettle after chemical treatment to perform hydrothermal treatment and finally obtain the product. The titanium dioxide nanotube film prepared by the method has a three-dimensional ordered network structure and has better integrity; and compared with the existing template method and anodic oxidation method, the method in the invention has simple preparation steps and low cost and is easy to perform large-area preparation.

Description

technical field [0001] The invention belongs to the technical field of preparation of nanometer materials and optoelectronic information materials, in particular to a method for preparing titanium dioxide nanotube thin films by combining interface chemical reaction and hydrothermal reaction. Background technique [0002] TiO 2 A series of excellent properties such as good one-dimensional electron conductivity, large specific surface area, and special surface characteristics of nanotube films determine their applications in the fields of sensors, hydrogen storage materials, solar energy, photocatalysts, etc. The prospects are very bright. At present, the template method and electrochemical anodic oxidation method are mainly used to prepare titanium dioxide nanotube films. The size and shape of the nanotubes prepared by the template method depend on the size of the template agent. The pores of the template are generally relatively large, and the inner diameter of the nanotube...

Claims

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Application Information

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IPC IPC(8): C30B29/16C30B7/10C01G23/047
Inventor 胡晓云苗慧商毅博樊君张德恺林彦明姜振益
Owner NORTHWEST UNIV
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