Titanium dioxide nanometer composite structure film and preparation method thereof

A nano-composite, titanium dioxide technology, applied in electrolytic coatings, surface reaction electrolytic coatings, coatings, etc., can solve the problems of difficult precise control of the preparation process, complex process, high risk, etc., and achieve good dye adsorption performance and uniform distribution , the effect of large specific surface area

Inactive Publication Date: 2011-11-23
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Although the above method successfully prepared TiO 2 Nanoparticle-modified TiO 2 The composite structure of nanotubes, but the process is more complicated, and it is necessary to introduce foreign substances as TiO 2 The precursor of, and the precursor TiCl used in the above method 4 It is very prone to hydrolysis to produce volatile gas HCl with a strong pungent smell, which makes it difficult to accurately control the preparation process, and is more dangerous and costly

Method used

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  • Titanium dioxide nanometer composite structure film and preparation method thereof
  • Titanium dioxide nanometer composite structure film and preparation method thereof
  • Titanium dioxide nanometer composite structure film and preparation method thereof

Examples

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Embodiment 1

[0031] A titanium dioxide nanocomposite structure film and a preparation method thereof. Putting the polished and polished titanium-containing metal sheet with a titanium content of 90-99.99 wt% as an anode into the electrolyte for anodic oxidation, the anodic oxidation voltage is 40-60V, and the anodic oxidation time is 0.5-2 hours; Then the titanium-containing metal sheet after anodic oxidation is cleaned, dried, and then the dried titanium-containing metal sheet is placed in H 2 In O, under the condition of 80-150 DEG C, hydrothermally react in a closed container for 2-8 hours, cool naturally, and obtain a titanium dioxide nanocomposite structure film on the surface of the titanium-containing metal sheet.

[0032] The electrolyte in this embodiment is 0.05-0.5 wt% fluorine-containing ions, 0.5-5 wt% H 2 A mixed solution of O and 95-99wt% ethylene glycol; the fluorine-containing ion is NH 4 F.

Embodiment 2

[0034] A titanium dioxide nanocomposite structure film and a preparation method thereof. Putting the polished and polished titanium-containing metal sheet with a titanium content of 90-99.99 wt% as an anode into the electrolyte for anodic oxidation, the anodic oxidation voltage is 40-60V, and the anodic oxidation time is 0.5-2 hours; Then the titanium-containing metal sheet after anodic oxidation is cleaned, dried, and then the dried titanium-containing metal sheet is placed in an H 2 In a mixed solution of O and 70-95 wt% alcoholic organic matter, hydrothermally react in a closed container at 200-300°C for 6-15 hours, and cool naturally to obtain a titanium dioxide nanocomposite structure film on the surface of a titanium-containing metal sheet.

[0035] In this embodiment: the electrolyte is 0.3-0.8wt% fluorine-containing ions, 2-15wt% H 2 A mixed solution of O and 85-95wt% ethylene glycol, the fluoride ion is NH 4 F; Alcoholic organic matter is ethanol.

Embodiment 3

[0037] A titanium dioxide nanocomposite structure film and a preparation method thereof. Putting the polished and polished titanium-containing metal sheet with a titanium content of 90-99.99 wt% as an anode into the electrolyte for anodic oxidation, the anodic oxidation voltage is 40-60V, and the anodic oxidation time is 0.5-2 hours; Then the titanium-containing metal sheet after anodic oxidation is cleaned, dried, and then the dried titanium-containing metal sheet is placed in an H 2 In a mixed solution of O and 50-80 wt% alcoholic organic matter, hydrothermally react in a closed container at 150-250°C for 8-10 hours, cool naturally, and obtain a titanium dioxide nanocomposite structure film on the surface of a titanium-containing metal sheet.

[0038] In this embodiment: the electrolyte is 0.8-3wt% fluorine-containing ions, 5-20wt% H 2 A mixed solution of O and 77-85wt% ethylene glycol, the fluoride ion is NH 4 F; organic alcohols are methanol and ethanol.

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Abstract

The invention relates to a titanium dioxide nanometer composite structure film and a preparation method thereof. The technical scheme of the preparation method comprises the following steps: using a polished titanium-containing metal plate as an anode to be placed in an electrolyte and perform anodic oxidation, wherein the voltage of anodic oxidation is 10-60V and the time of anodic oxidation is 0.5-5 hours; then cleaning the obtained titanium-containing metal plate after anodic oxidation, drying, then placing the dried titanium-containing metal plate in H2O or the mixed solution containing 5-95wt% H2O and 5-95wt% alcohol organic matter, performing a hydrothermal reaction in a sealed container at 80-300 DEG C for 0.5-24 hours, and naturally cooling to obtain the titanium dioxide nanometercomposite structure film on the surface of the titanium-containing metal plate. The preparation method is simple and reliable without adding a foreign material as a Ti source; and the load of TiO2 nanoparticles in nanotubes is controllable. In the prepared composite structure of TiO2 nanoparticles and nanotubes, TiO2 nanoparticles are distributed in the nanotubes evenly.

Description

technical field [0001] The invention belongs to the technical field of nanocomposite structures. In particular, it relates to a titanium dioxide nanocomposite structure film and a preparation method thereof. technical background [0002] TiO 2 It is a good semiconductor material. It is widely used in the fields of solar cells, photocatalysis and biomaterials due to its good photoelectrochemical properties, stable physical and chemical properties, low cost and non-toxicity. In recent years, nanomaterials have attracted widespread attention due to their great scientific value and potential application value. Theoretical and experimental studies have shown that nanostructures exhibit superior properties compared to bulk materials. Therefore nanostructured TiO 2 The synthesis and performance research of them have aroused great interest. [0003] TiO 2 Nanoparticles are widely used in the fields of solar cells and photocatalysis due to their superior photoelectric performan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/26
Inventor 霍开富陈荣生付继江王海蓉张旭明
Owner WUHAN UNIV OF SCI & TECH
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