Preparation method of columnar monocrystal nano-TiO2 array film

A technology of single crystal nanometer and titanium oxide, which is applied in chemical instruments and methods, single crystal growth, single crystal growth, etc., can solve the problems of many grain boundaries between nanotube particles, improved efficiency of titanium oxide, unfavorable electron transport, etc., to achieve High degree of crystallinity and order, easy operation, and favorable electron transport effects

Inactive Publication Date: 2010-04-28
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the titanium oxide nanotube films prepared by these two methods are not single crystal nanotubes formed by the self-assembly of titanium oxide particles, but are formed by stacking polycrystalline particles

Method used

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  • Preparation method of columnar monocrystal nano-TiO2 array film
  • Preparation method of columnar monocrystal nano-TiO2 array film
  • Preparation method of columnar monocrystal nano-TiO2 array film

Examples

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Example Embodiment

[0026] Example 1

[0027] Mix and stir 30 mL of hydrochloric acid and 30 mL of deionized water, add 1 mL of butyl titanate dropwise while stirring, and pour the mixture of water, hydrochloric acid and butyl titanate into a polytetrafluoroethylene lined reactor. Wash the conductive glass with a mixed solution of water, acetone and ethanol in a ratio of 1:1:1, and then tilt the conductive surface of the glass against the wall of the reactor containing the reaction solution. The tightly-capped reaction kettle was placed in a constant temperature oven, and hydrothermally treated at 180°C for 4 hours. After the completion of the reaction, the reaction kettle cooled to room temperature was taken out, the conductive glass was taken out, washed with deionized water and air-dried naturally.

Example Embodiment

[0028] Example 2

[0029] Mix and stir 30mL hydrochloric acid, 5mL methanol and 25mL deionized water. Add 2mL butyl titanate dropwise while stirring. Pour the mixture of methanol, water, hydrochloric acid, and butyl titanate into polytetrafluoroethylene for reaction In the kettle. Clean the conductive glass with a mixed solution of water, acetone and ethanol in a ratio of 1:1:1, and then tilt the conductive surface of the glass against the wall of the reactor containing the reaction solution, and immerse the conductive glass in the solution. Tightly cover the reaction kettle and place it in a constant temperature oven for hydrothermal treatment at 160°C for 6 hours. After the completion of the reaction, the reaction kettle cooled to room temperature was taken out, the conductive glass was taken out, washed with deionized water and air-dried naturally.

Example Embodiment

[0030] Example 3

[0031] Mix and stir 30mL hydrochloric acid, 10mL ethanol and 20mL deionized water. Add 4mL butyl titanate dropwise while stirring. Pour the mixture of ethanol, water, hydrochloric acid and butyl titanate into the polytetrafluoroethylene Lining the reactor. Wash the conductive glass with a mixed solution of water, acetone and ethanol in a ratio of 1:1:1, and then tilt the conductive surface of the glass against the wall of the reactor containing the reaction solution. The tightly-capped reaction kettle was placed in a constant temperature oven and hydrothermally treated at 150°C for 8 hours. After the completion of the reaction, the reaction kettle cooled to room temperature was taken out, the conductive glass was taken out, washed with deionized water and air-dried naturally.

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Abstract

The invention discloses a preparation method of columnar monocrystal nano-TiO2 array film. In the method, firstly, hydrochloric acid and alcohol substances (methyl alcohol, ethanol, butanol and glycol) are dipped into tetrabutyl titanate under the condition of stirring, and mixture is dripped into deionized water to form even solution; the solution is poured into a hydrothermal reaction kettle; the conductive surface of conductive glass cleaned by deionized water, alcohol and acetone solution faces downwards to lean against the inner wall of the reaction kettle; after the reaction kettle is put in a constant-temperature oven for hydro-thermal treatment for a period, conductive glass after reaction is washed with deionized water and naturally dried to obtain columnar monocrystal nano-TiO2. The invention has the advantages of low cost of raw materials, low experiment temperature, simple technology, convenient operation and the like. The prepared columnar monocrystal nano-TiO2 array film has adjustable density, thickness, orientation and degree of crystallinity and is suitable for industrial production. The invention can be used for solar cell film material and photocatalytic degradation organic matter material.

Description

technical field [0001] The invention relates to the technical field of material preparation, in particular to a method for preparing a columnar single-crystal nano-titanium oxide array thin film. Background technique [0002] Nano-titanium oxide is cheap, stable in performance, and non-toxic to the environment. It is widely used in various aspects such as solar cells, photocatalytic degradation of organic matter, gas sensors, and hydrogen storage materials. However, there are problems such as easy agglomeration and difficult separation of ultra-fine nano-titanium oxide powder in application. Titanium oxide film can be fixed on the substrate, which can effectively solve the problem of difficult separation and recovery of titanium oxide particles. Therefore, the preparation of titanium oxide film is of great importance. Scientific research and practical application value. [0003] The microemulsion method (Chinese patent 200710011154.0 and Chinese patent 200410025755.3) and t...

Claims

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Application Information

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IPC IPC(8): C23C20/08C30B7/10C30B29/16
Inventor 高云夏晓红张勇邓泉荣邵国胜
Owner HUBEI UNIV
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