Branch controllable titanium dioxide nanotube array thin film and preparation method thereof

A nanotube array, titanium dioxide technology, applied in nanostructure manufacturing, chemical instruments and methods, nanotechnology and other directions, to achieve the effects of wide application prospects, wide adjustable range, and controllable morphology

Inactive Publication Date: 2010-03-03
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this preparation method fails to produce a titanium dioxide nanotube array film with a branched structure, especially a titanium dioxide nanotube array film with a controllable branching structure, and a titanium dioxide nanotube array film with a branched structure has a larger Specific surface area and more excellent nano-performance

Method used

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  • Branch controllable titanium dioxide nanotube array thin film and preparation method thereof
  • Branch controllable titanium dioxide nanotube array thin film and preparation method thereof
  • Branch controllable titanium dioxide nanotube array thin film and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0017] The specific steps of preparation are as follows: step 1, prepare the competent electrolyte according to the molar ratio of ammonium fluoride, ethylene glycol and water at a ratio of 0.05:17.7:0.015; Proportional preparation of the branch tube electrolyte; wherein, the water is deionized water, and the purity of the metal titanium sheet is 96%. Step 2, put the metal titanium sheet in a mixed solution of ethanol and acetone with a molar ratio of 1:1 and ultrasonically clean it for 30 minutes, then wash it with water and dry it in the air. After that, place one side of the metal titanium sheet in the main electrolyte as the anode , anodized at a DC voltage of 55V and a temperature of 0°C for 6h, and then cleaned once with ethylene glycol. Next, the anodized side was placed in the branch tube electrolyte as an anode, and anodized at a DC voltage of 30V and a temperature of 0°C for 60 minutes; wherein, the cathode during anodization was a graphite sheet. made approximately...

Embodiment 2

[0019] The specific steps of preparation are as follows: step 1, prepare the competent electrolyte according to the molar ratio of ammonium fluoride, ethylene glycol and water at a ratio of 0.08:17.7:0.018; The branch tube electrolyte is prepared in proportion; wherein, the water is distilled water, and the purity of the metal titanium sheet is 97%. Step 2, put the metal titanium sheet in a mixed solution of ethanol and acetone with a molar ratio of 1:1 and ultrasonically clean it for 35 minutes, then wash it with water and dry it in the air. After that, place one side of the metal titanium sheet in the main electrolyte as the anode , anodized at a DC voltage of 58V and a temperature of 9°C for 4.5h, and then cleaned twice with ethylene glycol. Next, the anodized side was placed in the branch tube electrolyte as an anode, and anodized at a DC voltage of 50V and a temperature of 9°C for 53 minutes; wherein, the cathode during anodization was a metal platinum sheet. made as i...

Embodiment 3

[0021]The specific steps of preparation are as follows: step 1, the main electrolyte is prepared according to the molar ratio of ammonium fluoride, ethylene glycol and water at a ratio of 0.1:17.7:0.02, and the molar ratio of hydrofluoric acid and ethylene glycol is 0.2:17.7 Proportional preparation of the branch tube electrolyte; wherein, the water is deionized water, and the purity of the metal titanium sheet is 98%. Step 2, place the metal titanium sheet in a mixed solution of ethanol and acetone with a molar ratio of 1:1 and ultrasonically clean it for 40 minutes, then wash it with water and dry it in the air. After that, place one side of the metal titanium sheet in the main electrolyte as the anode , anodized at a DC voltage of 60V and a temperature of 18°C ​​for 3 hours, and then cleaned with ethylene glycol for 3 times. Next, the anodized side was placed in the branch tube electrolyte as an anode, and anodized at a DC voltage of 80V and a temperature of 18°C ​​for 45 m...

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Abstract

The invention discloses a branch controllable titanium dioxide nanotube array thin film and a preparation method thereof. The thin film consists of an array of a titanium dioxide nanotube formed by connecting a main tube and a branch tube in series; the thickness of the thin film is 1-100mum, and the porosity factor is 40-60 percent. The preparation method comprises the following steps: preparinga main tube electrolyte according to the proportion that the mole ratio of ammonium fluoride to glycol to water is 0.05-0.15:17.7:0.015-0.025, and preparing a branch tube electrolyte according to theproportion that the mole ratio of hydrofluoric acid to glycol is 0.15-0.25:17.7; then firstly, putting one surface of a titanium sheet in the main tube electrolyte to serve as the anode; carrying outanode oxidization under the conditions that the DC voltage is 55-65V and the temperature is 0-35 DEG C for 0.5-6h; then using the glycol to clean the anode; subsequently, putting the surface which isanodized in the branch tube electrolyte to serve as the anode, and carrying out anode oxidization under the conditions that the DC voltage is 30-120V and the temperature is 0-35 DEG C for more than 30min, thereby preparing the thin film. The thin film can be widely used for fields of dye-sensitized solar cells, gas sensors, photolytic water hydrogen production and photonic crystal.

Description

technical field [0001] The invention relates to a titanium dioxide nanotube array film and a preparation method thereof, in particular to a titanium dioxide nanotube array film with controllable branching and a preparation method thereof. Background technique [0002] Titanium dioxide (TiO 2 ) is a wide bandgap semiconductor material, which has broad application prospects in biology, sensing, catalysis, photocatalysis and photoelectric conversion, and titanium dioxide nanotubes have attracted great attention due to their huge specific surface area. s concern. Titanium dioxide nanotubes have shown good properties in all aspects, and even in biomedicine, titanium dioxide nanotube arrays are used as connectors and supports for growing bone and stem cells due to their biophilicity. For this reason, people have made various attempts and efforts in order to obtain it, such as a kind of " using multi-step anodic oxidation method to prepare gradient TiO 2 nanotube array thin film...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/26C30B29/16C30B29/62C30B30/02B82B3/00
Inventor 金震费广涛胡小晔许少辉
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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