Preparation method of titanium dioxide nanopore array film

A technology of nanohole array and titanium dioxide, which is applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of difficult preparation and inability to obtain hole array film, and achieve the effect of scientific preparation method

Active Publication Date: 2013-01-23
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, neither TiO 2 Nanotube film, or its preparation method, there are deficiencies, first of all, TiO 2 The nanotube film is composed of compactly arranged nanotubes, and the minimum thickness is at least 300nm, making it difficult to be used as a mask for the preparation of quantum dots; secondly, the preparation method cannot obtain a hole array film with a thickness of ≤50nm

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  • Preparation method of titanium dioxide nanopore array film
  • Preparation method of titanium dioxide nanopore array film

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Experimental program
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Effect test

Embodiment 1

[0020] The concrete steps of preparation are:

[0021] In step 1, ammonium fluoride, water and ethylene glycol are mixed in a mass ratio of 3:18:950 to obtain an electrolyte. Reuse oxidation area is 9.6cm 2 The electrolyte solution is oxidized by a two-electrode system with a titanium sheet as the anode and graphite as the cathode to obtain electrolyte solution 1 and electrolyte solution 2; wherein, the oxidation temperature of electrolyte solution 1 is 23°C, and the voltage is a constant voltage of 58V. The time is 4 hours, the oxidation temperature of the electrolyte 2 is 23°C, the voltage is 92s at 58V and 320s at 38V, and the time is 100 hours.

[0022] Step 2, first place the titanium sheet in the electrolyte solution 1 at 23°C, and oxidize it at a constant voltage of 58V for 1520s. Then it was placed in the electrolyte solution 2 at 23°C, and oxidized at a constant voltage of 58V for 1520s, 620s at a constant voltage of 38V, and 1820s at a constant voltage of 58V in se...

Embodiment 2

[0025] The concrete steps of preparation are:

[0026] In step 1, ammonium fluoride, water and ethylene glycol are first mixed according to a mass ratio of 3:19:960 to obtain an electrolyte. Reuse oxidation area is 9.7cm 2 The electrolyte solution is oxidized by a two-electrode system with titanium sheet as the anode and graphite as the cathode in / L to obtain electrolyte solution 1 and electrolyte solution 2; wherein, the oxidation temperature of electrolyte solution 1 is 24°C, and the voltage is a constant voltage of 59V, The time is 3.8 hours, the oxidation temperature of the electrolyte 2 is 24°C, the voltage is 91s at 59V and 310s at 39V, and the time is 110 hours.

[0027] Step 2, first place the titanium sheet in the electrolyte solution 1 at 24°C, and oxidize it at a constant voltage of 59V for 1510s. It was then placed in electrolyte solution 2 at 24°C, and oxidized at a constant voltage of 59V for 1510s, 610s at a constant voltage of 39V, and 1810s at a constant vo...

Embodiment 3

[0030] The concrete steps of preparation are:

[0031] In step 1, ammonium fluoride, water and ethylene glycol are mixed in a mass ratio of 3:20:970 to obtain an electrolyte. Reuse oxidation area is 9.8cm 2The electrolyte solution is oxidized by a two-electrode system with a titanium sheet as the anode and graphite as the cathode to obtain electrolyte solution 1 and electrolyte solution 2; wherein, the oxidation temperature of electrolyte solution 1 is 25°C, and the voltage is a constant voltage of 60V. The time is 3.5 hours, the oxidation temperature of the electrolyte 2 is 25° C., the voltage is 60 V for 90 s and 40 V for 300 s, and the time is 120 hours.

[0032] Step 2, first place the titanium sheet in the electrolyte solution 1 at 25°C, and oxidize it at a constant voltage of 60V for 1500s. Then it was placed in electrolyte solution 2 at 25°C, and oxidized at a constant voltage of 60V for 1500s, at a constant voltage of 40V for 600s, and at a constant voltage of 60V fo...

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Abstract

The invention discloses a preparation method of a titanium dioxide nanopore array film. The preparation method comprises the steps of: mixing ammonium fluoride, water and ethylene glycol to obtain an electrolyte, oxidizing a two-electrode system by using a titanium sheet as a positive electrode and graphite as a negative electrode to obtain an electrolyte 1 and an electrolyte 2; then sequentially placing the titanium sheet in the electrolyte 1, the electrolyte 2 and the electrolyte to be oxidized to obtain a titanium oxide sheet; placing the titanium oxide sheet in a hydrofluoric acid to be corroded, blowing the hydrofluoric acid solution by air in a bypass to obtain a titanium oxide film stripped from the titanium oxide sheet; and finally, sequentially respectively placing the titanium oxide film into hydrofluoric acid solutions with different concentrations for being corroded, gradually diluting the hydrofluoric acid solutions until the concentrations reach 0.004-0.006wt percent, and finally preparing the titanium dioxide nanopore array film with thickness of 10-50nm. A target product prepared by adopting the preparation method can be used as a mask for preparing a quantum dot, and can be used as a micro gate to be applied to a sample support of a transmission electron microscope, and is a good filter bacterium film material further.

Description

technical field [0001] The invention relates to a method for preparing a film, in particular to a method for preparing a titanium dioxide nanopore array film. Background technique [0002] Titanium dioxide is a wide-bandgap semiconductor with good photoelectric, photosensitive, and gas-sensitive properties. Nano-titanium dioxide has attracted more and more attention because of its large specific surface area and excellent properties in many aspects. At present, people have made unremitting efforts to obtain nano-titanium dioxide materials, such as in "TiO2 2 Preparation of nanotube thin films and their photoelectrochemical properties" (Wu Xiaomeng, China Excellent Master's Degree Thesis Full-text Database Engineering Science and Technology Series I, published in August 2008) a TiO 2 Nanotube films and methods for their preparation. The TiO 2 The thickness of the nanotube film is 300nm-2μm, and the tube diameter of the nanotube is 120-160nm; the preparation method is to p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/26B82Y40/00B82Y30/00
Inventor 高旭东费广涛欧阳浩淼郭霄
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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