A kind of titanium dioxide nanotube array film and preparation method thereof

A technology of nanotube array and titanium dioxide, applied in chemical instruments and methods, nanotechnology, nanotechnology, etc., can solve problems such as unsatisfactory photocatalytic performance, improve photocatalytic activity and electrical conductivity, and carbon-nitrogen co-doping Or the effect of uniform carbon doping and uniform content distribution

Inactive Publication Date: 2011-11-30
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Cai et al embedded titanium dioxide nanotubes in a mixture of polyethylene glycol and uric acid, and heat-treated them at 600 °C in a nitrogen atmosphere to obtain carbon and nitrogen co-doped titani

Method used

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  • A kind of titanium dioxide nanotube array film and preparation method thereof
  • A kind of titanium dioxide nanotube array film and preparation method thereof
  • A kind of titanium dioxide nanotube array film and preparation method thereof

Examples

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Example Embodiment

[0022] Example 1

[0023] A titanium dioxide nanotube array film and a preparation method thereof. The titanium-containing metal sheet with a titanium content of 50-70wt% is ground and polished as an anode and placed in the electrolyte, and anodized for 0.5-2 hours under the control voltage of 20-40V; then the anodized titanium-containing metal The sheet is taken out of the electrolyte, placed in a high-temperature furnace, and kept in a protective atmosphere at 400-600℃ for 5-8 hours; then it is cooled to room temperature in the furnace in the protective atmosphere, and the surface of the cooled titanium-containing metal sheet A carbon-doped titanium dioxide nanotube array film is produced.

[0024] The protective atmosphere of this embodiment is Ar.

[0025] In this embodiment: the electrolyte is 0.8~1.5wt% of fluoride ion, 1~15wt% of H 2 A mixed liquid of O and 84-98wt% alcoholic organic solvent; wherein the fluoride ion is HF, and the alcoholic organic solvent is ethylene glyco...

Example Embodiment

[0026] Example 2

[0027] A titanium dioxide nanotube array film and a preparation method thereof.

[0028] The protective atmosphere of this embodiment is N 2 .

[0029] In the electrolyte of this embodiment: fluorine ion is NH 4 F, the alcoholic organic solvent is ethanol.

[0030] The rest is the same as in Example 1.

Example Embodiment

[0031] Example 3

[0032] A titanium dioxide nanotube array film and a preparation method thereof.

[0033] The protective atmosphere of this embodiment is N 2 And Ar.

[0034] In the electrolyte of this embodiment: fluorine ion is NH 4 F and HF, alcoholic organic solvents are ethanol and ethylene glycol.

[0035] The rest is the same as in Example 1.

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Abstract

The invention relates to a titanium dioxide nanotube array film and a preparation method thereof. The technical plan is: firstly put the titanium-containing metal sheet into the electrolyte by grinding and polishing it as an anode, anodize it for 0.5-5 hours under the condition of a controlled voltage of 10-60V; then put the anodized titanium-containing metal sheet from the electrolysis Take it out of the liquid, put it in a high-temperature furnace, and keep it warm in a protective atmosphere at 300-800°C for 0.5-10 hours; then cool it to room temperature with the furnace in a protective atmosphere, and form carbon-doped carbon on the surface of the cooled titanium-containing metal sheet. Heterogeneous or carbon-nitrogen co-doped titania nanotube array films. The invention has the characteristics of no external carbon source or nitrogen source, low reaction temperature, simple and reliable method, and controllable content of doping elements; the prepared carbon-doped titanium dioxide nanotube array film, or carbon-nitrogen co-doped titanium dioxide nanometer The elements doped in the tube array thin film are evenly distributed.

Description

technical field [0001] The invention belongs to the technical field of titanium nanotube array films, and in particular relates to a titanium dioxide nanotube array film and a preparation method thereof. Background technique [0002] In recent years, the problem of environmental pollution has become increasingly serious, and photocatalytic degradation is currently one of the most important and promising methods for dealing with organic pollutants. Photocatalytic reaction is a chemical reaction that can be promoted by photocatalyst under the condition of light. Semiconductor photocatalysts generate electron-hole pairs under illumination greater than their energy gap width. The photogenerated holes have strong oxidative properties and can quickly oxidize organic pollutants into CO. 2 and H 2 O, the use of photocatalytic reactions can decompose almost all organic pollutants harmful to human body and environment. Among many photocatalysts used for photocatalytic degradation o...

Claims

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Application Information

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IPC IPC(8): C25D11/26C30B29/16C30B29/62C30B30/02B82Y40/00B82Y30/00
Inventor 霍开富陈荣生胡良胜
Owner WUHAN UNIV OF SCI & TECH
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