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Preparation method of TiO2 nanotube array film

A nanotube array and thin film technology, applied in the field of nanomaterials, can solve the problems of easy blockage and difficult peeling of the bottom nozzle, and achieve the effect of consistent pipe diameter, complete peeling, and neat microscopic appearance.

Inactive Publication Date: 2014-04-23
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method of anodizing titanium sheets as substrates has the advantages of simple preparation process, control of tube length and diameter by adjusting oxidation parameters, and highly ordered structure. The connection is tight, not easy to peel off, and the bottom nozzle is easy to block

Method used

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  • Preparation method of TiO2 nanotube array film
  • Preparation method of TiO2 nanotube array film
  • Preparation method of TiO2 nanotube array film

Examples

Experimental program
Comparison scheme
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Embodiment

[0019] The specific preparation steps of this embodiment are as follows:

[0020] 1. Cut two titanium sheets of the same size from the titanium sheet, then polish the two titanium sheets, and then ultrasonically clean them with acetone, ethanol and deionized water.

[0021] 2. Dissolve 1.0g~1.5g ammonium fluoride in 5ml~10ml deionized water, and then mix it with 400ml~500ml ethylene glycol to prepare electrolyte.

[0022] 3. Immerse the titanium sheets treated in step 1 into the electrolyte prepared in step 2, one piece as an anode and one piece as a cathode, and treat at a voltage of 40V-80V for 0.5-1h.

[0023] 4. Take out the titanium sheet of the anode, and ultrasonically treat it in 10% hydrogen peroxide for 10 minutes to 20 minutes.

[0024] 5. Immerse the titanium sheet treated in step 4 into the newly prepared electrolyte in step 2, and treat it at a voltage of 40V-80V for 1h-5h. After that, the voltage is quickly raised to 80-100V, and the treatment is 5-10 minutes;...

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Abstract

The invention discloses a method for preparing a TiO2 nanotube array film through secondary anodic oxidation and completely stripping the film from a Ti sheet. According to the method, an anodic oxidation reaction is performed in a solution which is reasonably prepared, and the growth length of a nanotube can be accurately controlled according to the length of the reaction time under the condition that the concentration of the solution is known. In the preparation method, a principle that an amorphous phase TiO2 nanotube array can be easily dissolved by an H2O2 solution with a certain concentration and a nanotube array converted into an anatase phase can not be dissolved by the H2O2 solution is used, so that an entire TiO2 nanotube array film is successfully separated from the Ti sheet, and a TiO2 nanotube array film with two open ends is formed. The TiO2 nanotube array grown by the preparation method disclosed by the invention is regular in shape, has two open ends, and is neatly arranged and consistent in pore size.

Description

technical field [0001] The present invention relates to a kind of TiO 2 The invention discloses a method for preparing a nanotube array thin film, belonging to the technical field of nanomaterials. Background technique [0002] Titanium dioxide has been widely used in photocatalysis, solar cells, sensors and biology because of its non-toxic, non-polluting, low cost and unique photoelectric properties. Compared with titanium dioxide powder, titanium dioxide nanotubes have the advantages of higher activity and stronger stability, so they have better application prospects. Methods for preparing titanium dioxide nanotubes include template method, hydrothermal method, anodic oxidation method, etc. The method of anodizing titanium sheets as substrates has the advantages of simple preparation process, control of tube length and diameter by adjusting oxidation parameters, and highly ordered structure. The connection is tight, not easy to peel off, and the bottom nozzle is ...

Claims

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Application Information

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IPC IPC(8): C25D11/26
Inventor 蔡传兵罗华明王攀刘志勇
Owner SHANGHAI UNIV