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High length-diameter ratio titania nanometer tube array preparation method

A technology of nanotube array and high aspect ratio, which is applied in nanostructure manufacturing, nanotechnology, nanotechnology, etc., can solve the problems of long anodic oxidation time, achieve uniform distribution, increase electrochemical reaction speed, and fast growth rate Effect

Inactive Publication Date: 2006-12-27
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the diameter of nanotubes is limited to tens of nanometers, and requires a relatively long anodizing time

Method used

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  • High length-diameter ratio titania nanometer tube array preparation method
  • High length-diameter ratio titania nanometer tube array preparation method
  • High length-diameter ratio titania nanometer tube array preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～17

[0021] Polish the industrially pure titanium plate or titanium alloy with metallographic sandpaper until there is no scratch on the surface, then ultrasonically clean it with acetone, absolute ethanol and deionized water in sequence, and dry it before use. At room temperature, use a stainless steel plate or a titanium plate as a counter electrode, take 125ml of electrolyte, and apply an anode voltage for electrochemical anodic oxidation. The samples were taken out, rinsed with deionized water, ultrasonically cleaned, and dried. The composition and experimental conditions of the electrolyte are shown in Table 1. figure 1 with figure 2 are the nanotube arrays prepared according to the conditions of Examples 1 and 2 in Table 1, respectively. It can be seen from the figure that the nanotube array is an upright, hollow, and orderly porous structure with basically the same upper and lower dimensions, with an open upper end and a closed bottom end. Titanium alloy adopts Ti-6Al-4V...

Embodiment 18～21

[0024] Similar to Example 1, the difference is that the commercially pure titanium plate or titanium alloy is ground and polished with metallographic sandpaper until there is no scratch on the surface, then ultrasonically cleaned with acetone, absolute ethanol and deionized water in sequence, and dried before use. At room temperature, use a stainless steel plate or a titanium plate as a counter electrode, take 125ml of electrolyte, and apply an anode voltage for electrochemical anodic oxidation. The samples were taken out, rinsed with deionized water, ultrasonically cleaned, and dried. The composition and experimental conditions of the electrolyte are shown in Table 2. Titanium alloy adopts Ti-5Al-2.5Sn or Ti-Ni-Nb.

[0025] Reality

apply

example

Electrolyte composition

polyethylene

diol

content

(%)

anode

oxidation

Voltage

(V)

anode

oxidation

time

(h)

Diameter

(nm)

film l...

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PUM

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Abstract

The preparation method of high aspect ratio titanium dioxide nanotube array. It uses new electrolyte that contains fluorin. By electrochemistry anodization method, it coats high aspect ratio TiO2 nanotube array on surface of metal titanium. The substrate is polished and cleaned. The solute of electrolyte is fluorid and supporting electrolyte, then adds alcohol additives. According to the weight %, the content of fluorid is 0.1% - 1% of total electrolyte; the content of supporting electrolyte is 0.4% - 4% of total electrolyte; the content of alcohol additives is 0% - 90% of total electrolyte, the remains are solvent. The metal plate can be used as electrode to anodizate. Then high aspect ratio TiO2 nanotube array film can be generated on surface of substrate.

Description

technical field [0001] The present invention relates to a kind of titanium dioxide (TiO 2 ) nanotube arrays, especially involving the use of a new fluorine-containing electrolyte solution to construct TiO with a high aspect ratio on the surface of titanium metal by electrochemical anodic oxidation. 2 Methods for nanotube arrays. Background technique [0002] Nano-TiO 2 It is an important inorganic functional material. Due to its advantages of moisture sensitivity, gas sensitivity, dielectric effect, photoelectric conversion and superior photocatalytic performance, it is used in sensors, dielectric materials, self-cleaning materials, solar cells and photocatalytic degradation. Pollutants and other high-tech fields have important application prospects, and have become a hot research topic at home and abroad. In 2001, American scientist Varghese used the electrochemical anodic oxidation method to prepare TiO for the first time in HF aqueous solution. 2 Nanotube array materi...

Claims

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Application Information

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IPC IPC(8): C25D11/26B82B3/00
Inventor 林昌健庄惠芳赖跃坤陈艺聪孙岚
Owner XIAMEN UNIV
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