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Method for preparing independent and ordered titanium oxide nano tube array film

A technology of titanium oxide nanotubes and arrays, applied in coatings, surface reaction electrolytic coatings, electrolytic coatings, etc., can solve problems such as increasing operational complexity, and achieve simple synthesis processes, simple processes, and high efficiency Effect

Inactive Publication Date: 2014-06-18
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the technical scheme disclosed in CN101857966 A, it is necessary to carry out anodic oxidation twice, which increases the complexity of operation, and the secondary anodic oxidation time will be long enough to form amorphous TiO 2 Oxide layer has sufficient thickness, such as 3μm or thicker

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  • Method for preparing independent and ordered titanium oxide nano tube array film
  • Method for preparing independent and ordered titanium oxide nano tube array film
  • Method for preparing independent and ordered titanium oxide nano tube array film

Examples

Experimental program
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Embodiment 1

[0026] An ethylene glycol solution containing 0.25 wt% ammonium fluoride and 2 vol% water was used as the electrolyte. Ti was used as the working electrode, Pt was used as the counter electrode, and the distance between the two electrodes was set at 3 cm. Oxidized at 20°C and 60V for 3 hours, a titanium oxide nanotube array film with a thickness of 35 microns was obtained on the Ti sheet. The titanium sheet was directly immersed in distilled water without ultrasonic treatment, soaked for 12 hours, taken out, and placed in a fume hood. Drying by blowing air at a slow speed makes the nanotube arrays detach from the Ti substrate. If necessary, during the detachment process, a corresponding force is applied to the substrate to help the detachment of the nanotube array film. Figure 1A SEM images of the surface topography of the obtained free-standing titania nanotube arrays.

Embodiment 2

[0028] An ethylene glycol solution containing 0.25 wt% ammonium fluoride and 2 vol% water was used as the electrolyte. Ti was used as the working electrode, Pt was used as the counter electrode, and the distance between the two electrodes was set at 3 cm. After oxidizing at 20°C and 60V for 3 hours, a titanium oxide nanotube array film with a thickness of 35 microns was obtained on the Ti sheet. After the titanium sheet was ultrasonically treated for 30 seconds, it was immersed in distilled water, soaked for 12 hours, taken out, and ventilated. Slow air blowing and drying in the cabinet, so that the nanotube array is separated from the Ti substrate. If necessary, during the detachment process, a corresponding force is applied to the substrate to help the detachment of the nanotube array film. Figure 1B SEM images of the surface topography of the obtained free-standing titania nanotube arrays.

Embodiment 3

[0030] An ethylene glycol solution containing 0.25 wt% ammonium fluoride and 2 vol% water was used as the electrolyte. Ti was used as the working electrode, Pt was used as the counter electrode, and the distance between the two electrodes was set at 3 cm. After oxidizing at 20°C and 60V for 3 hours, a titanium oxide nanotube array film with a thickness of 35 microns was obtained on the Ti sheet. After the titanium sheet was ultrasonically treated for 70 seconds, it was then immersed in distilled water, soaked for 12 hours, taken out, and ventilated. Slow air blowing and drying in the cabinet, so that the nanotube array is separated from the Ti substrate. If necessary, during the detachment process, a corresponding force is applied to the substrate to help the detachment of the nanotube array film. Figure 1C Scanning electron micrographs of the surface topography of independent titania nanotube arrays obtained for comparison Figure 1A ~ 1C It can be seen that ultrasonic tre...

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Abstract

The invention relates to a method for preparing an independent and ordered titanium oxide nano tube array film. The method comprises the following steps of: performing an anodic oxidation treatment on a titanium base to form a titanium oxide nano tube array film on the titanium base; soaking the obtained titanium oxide nano tube array film into water; and performing slow drying treatment to volatilize moisture and separate the titanium oxide nano tube array film from the titanium base, and thus forming the independent and ordered titanium oxide nano tube array film. The method is simple and feasible in synthetic process, pollution-free, high in efficiency and easy in industrialized production; and the prepared independent and ordered titanium oxide nano tube array film is complete, is controllable in shape and size, and can be used for a dye-sensitized solar cell in a front lighting mode.

Description

technical field [0001] The invention belongs to the field of new material technology and new energy technology, and relates to a titanium oxide nanotube array film, in particular to a method for preparing an independent and ordered titanium oxide nanotube array film. Background technique [0002] Titanium oxide nanotube arrays (TNT) have a very wide range of applications in solar cells, photocatalysis, and biomedicine. Usually, titanium oxide nanotube arrays are prepared on Ti sheet substrates by anodic oxidation. Since the titanium oxide nanotube array is attached to the metal titanium substrate, and the titanium substrate does not have light transmission, in practical applications, it is necessary to separate the nanotube array film from the titanium substrate. For example, in the application of dye-sensitized solar cells, if the nanotube array is not separated from the Ti sheet substrate, since the Ti sheet is opaque, only the back-illuminated method can be used. In the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/26
Inventor 罗建强孙静高濂刘阳桥
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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