Method for preparing TiO2 nanotube array film

A nanotube array and thin film technology, which is applied in the field of nanotube thin film preparation, can solve the problems of nozzle agglomeration, thin nanotube array thin film layer, uneven nanotube length, etc. Appearance, simple process effect

Inactive Publication Date: 2009-08-26
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of thin film layer, irregular microscopic appearance, uneven length of nanotubes, agglomeration of tube openings and cracking of the film in the nanotube array film prepared by the existing method, and to provide a TiO 2 Preparation method of nanotube array thin film

Method used

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  • Method for preparing TiO2 nanotube array film
  • Method for preparing TiO2 nanotube array film
  • Method for preparing TiO2 nanotube array film

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specific Embodiment approach 1

[0007] Specific implementation mode 1: TiO in this implementation mode 2 The preparation method of the nanotube array film is realized by the following steps: 1. Cut the titanium plate into two titanium sheets of the same size, then polish the two titanium sheets, and then put them into acetone for ultrasonic treatment for 10 to 60 minutes, and then wash them with distilled water Rinse 3 to 5 times; 2. Weigh 0.5 to 1.5 g of ammonium fluoride and dissolve it in 4 to 10 mL of distilled water, and then mix it with 100 to 200 mL of ethylene glycol or glycerol to obtain an electrolyte; 3. At room temperature, immerse the two titanium sheets treated in step 1 in the electrolyte solution prepared in step 2 in parallel, one is the anode and the other is the cathode, apply a voltage of 20-70V, and then electrolytically treat for 20-60 minutes; 1. Take out the titanium sheet used as the anode, put it into a dilute acid solution for ultrasonic treatment for 5-30 minutes, and then rinse i...

specific Embodiment approach 2

[0013] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the size of the two titanium sheets in step 1 is 25mm×10mm. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0014] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that in step 1, the two titanium sheets are polished with 50-300Cw water-resistant sandpaper, 500-1000Cw water-resistant sandpaper and 1500-2500Cw water-resistant sandpaper respectively. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention provides a method for a preparing TiO2 nanotube array film, relating to a method for preparing a nanotube film. The method solves the problems of the prior art that the prepared nanotube array film features thin film, irregular micro appearance, heterogeneous length of nanotubes, reunion of tube orifice and cracking of the film. The preparation method comprises: 1. a titanium plate is cut into two titanium sheets of the same size, and polishing, ultrasound processing and washing are carried out on the two titanium sheets; 2. electrolyte is prepared; 3. primary anodic oxidation is carried out on the titanium sheets; 4. demoulding is carried out; 5. secondary anodic oxidation is carried out on the titanium sheets; 6. the titanium sheets are dried after ultrasonic processing; and 7. calcination treatment is carried out, thus obtaining the TiO2 nanotube array film. In the invention, twice anodic oxidations are carried out on the titanium sheets, thus producing the TiO2 nanotube array film featuring regular micro appearance, homogeneous, smoothness, thick film layer, reunion-free tube orifice and no cracking. The preparation method of the invention features simple technique and equipment and controllable thickness of the nanotube film.

Description

technical field [0001] The invention relates to a preparation method of a nanotube film. Background technique [0002] Titanium dioxide (TiO 2 ) as an important inorganic semiconductor functional material, due to its characteristics of moisture sensitivity, gas sensitivity, dielectric effect, photoelectric conversion and superior photocatalytic performance, it is widely used in sensors, dielectric materials, self-cleaning materials, solar cells, photoelectric Catalytic degradation of pollutants has important application prospects, and has become one of the hot research topics at home and abroad. with general nano-TiO 2 powder compared to TiO 2 The special structure of nanotubes makes them have larger specific surface area and stronger adsorption capacity. Currently, the preparation of TiO 2 There are three main methods for nanotubes: template method, hydrothermal method and anodic oxidation method. Among them, the anodic oxidation method is easy to operate and the prep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/26C30B29/16C30B30/02
Inventor 李中华肖宁刘佳雯高原
Owner HARBIN INST OF TECH
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