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Honeycomb ordered titanium dioxide nanotube array film and preparation method thereof

A technology of nanotube array and titanium dioxide, which is applied in chemical instruments and methods, nanotechnology, crystal growth, etc., to achieve the effect of low-cost equipment and simple operation

Inactive Publication Date: 2011-09-21
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the development of nanoscience, this kind of titanium dioxide nanotube array with only a single diameter may not fully meet the actual application requirements

Method used

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  • Honeycomb ordered titanium dioxide nanotube array film and preparation method thereof
  • Honeycomb ordered titanium dioxide nanotube array film and preparation method thereof
  • Honeycomb ordered titanium dioxide nanotube array film and preparation method thereof

Examples

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Embodiment Construction

[0027] Example Honeycomb ordered titanium dioxide nanotube array film, the honeycomb ordered titanium dioxide nanotube array film is composed of upper and lower layers of titanium dioxide nanopores, and is supported on a titanium sheet substrate;

[0028] The titanium dioxide nanopore in the upper layer is an ordered regular hexagonal array, and its aperture is 70-250nm;

[0029] The titanium dioxide nanopores in the lower layer are actually titanium dioxide nanotubes, the open ends of which are located in the upper nanopores, and the open ends of the tubes are bonded to each other in the axial direction, and the aperture of the lower layer holes is 15-40nm, and the depth is 100-2000nm .

[0030] A method for preparing a honeycomb ordered titanium dioxide nanotube array film, comprising the following steps:

[0031] (1) First put the pure titanium sheet into a mixed solution of ethanol and acetone and ultrasonically clean it for 55-65 minutes to remove the organic matter on t...

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Abstract

The invention discloses a honeycomb ordered titanium dioxide nanotube array film and a preparation method thereof. The honeycomb ordered titanium dioxide nanotube array film consists of an upper-layer ordered structure and a lower-layer ordered structure, namely an upper-layer large-diameter regular hexagonal titanium dioxide nanopore array and a lower-layer small-diameter titanium dioxide nanotube array, wherein a low-layer nanotube orifice end is positioned in upper-layer titanium dioxide nanopores and the upper-layer nanopores are communicated so as to form a honeycomb structure. The method is easy to operate, equipment is cheap, and parameters of the structure can be effectively controlled by changing the oxidation voltage and the oxidation time of an anode; moreover, titanium dioxidewith the hierarchical structure can be widely applied to dye-sensitized solar cells, gas sensors, hydrogen preparation from water by photodecomposition, and photonic crystals.

Description

technical field [0001] The invention relates to a universal electrochemical anodic oxidation method for preparing a novel graded nanostructure titanium dioxide nanotube array, in particular to a honeycomb ordered titanium dioxide nanotube array film and a preparation method thereof. Background technique [0002] Pure titanium sheets in some dielectrics (mainly organic or inorganic electrolytes containing fluorine ions), can obtain ordered arrays of titanium dioxide nanotubes through anodic oxidation. These titanium dioxide nanotube arrays prepared by anodic oxidation have broad application prospects in the fields of environment, energy, biology and optics due to their unique tubular structure, high specific surface area and orderly arrangement. In recent years, people have been unremittingly exploring the relationship between electrochemical anodic oxidation parameters and the morphology of titanium dioxide nanotube arrays, mainly including the relationship between oxidation...

Claims

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Application Information

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IPC IPC(8): C25D11/26C30B29/16C30B29/60B82Y40/00
Inventor 胡小晔孟国文许巧玲许伟韩方明
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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