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Method for preparing nanometer composite film consisting of titanium dioxide nanotube and nanocrystalline

A titanium dioxide and nanocomposite technology, applied in the fields of nanostructure manufacturing, nanotechnology, nanotechnology, etc., can solve the problems of low electron transport capacity of nanocrystals, difficult to further improve the specific surface area of ​​nanotubes, etc., and achieve controllable film structure and low cost. , the effect of simple preparation process

Active Publication Date: 2010-07-14
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a simple and feasible method for preparing a novel high-efficiency nanostructure solar cell photoanode, which not only solves the problem of the lower electron transport capacity of nanocrystals, but also overcomes the difficulty that the specific surface area of ​​nanotubes is difficult to further improve

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  • Method for preparing nanometer composite film consisting of titanium dioxide nanotube and nanocrystalline
  • Method for preparing nanometer composite film consisting of titanium dioxide nanotube and nanocrystalline
  • Method for preparing nanometer composite film consisting of titanium dioxide nanotube and nanocrystalline

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Embodiment 1

[0014] Put the titanium metal sheet in 0.4% NH 4 F In ethylene glycol solution, applied voltage 80V, reacted for 9h, took out the sample and washed it with absolute ethanol, N 2 Blow dry to get TiO perpendicular to the titanium sheet substrate 2 nanotube film. At room temperature, dissolve 1.58 g of polyoxyethylene-polyoxypropylene-polyoxyethylene triblock polymer in 15 ml of absolute ethanol, stir and drop 0.2 ml of acetylacetone and 7 ml of n-butyl titanate after completely dissolving ester, and then added 1ml of concentrated hydrochloric acid and 0.2ml of deionized water; stirred at room temperature for 0.5 hours to obtain a titanium dioxide precursor sol. TiO prepared by anodic oxidation method by immersion 2 The nanotube film is immersed in the titanium dioxide precursor sol, and the surface is washed with absolute ethanol after the gel is formed. Insulate at 500°C for 2.5 hours, and cool to room temperature naturally. In this way, a nanocomposite film composed of ti...

Embodiment 2

[0016] Put the titanium metal sheet in the HF aqueous solution with a mass concentration of 0.2%, apply a voltage of 20V, and react for 0.25h, take out the sample and rinse it with absolute ethanol, N 2 Blow dry to obtain a TiO with a height perpendicular to the titanium sheet substrate with a thickness of about 0.35 microns 2 nanotube film. At room temperature, dissolve 3 grams of polystyrene-polyoxyethylene block polymer in 25 ml of absolute ethanol, and after complete dissolution, add 1.0 ml of acetylacetone and 15 ml of isopropyl titanate dropwise, and then add 3 ml of Concentrated hydrochloric acid and 1ml deionized water; stirred at room temperature for 6 hours to obtain a titanium precursor sol. TiO prepared by anodic oxidation method by immersion 2 The nanotube film is immersed in the titanium dioxide precursor sol, and the surface is washed with absolute ethanol after the gel is formed. Keep the temperature at 550° C. for 1 hour, and cool to room temperature natura...

Embodiment 3

[0018] Put the titanium metal sheet in 0.8% NH 4 F In ethylene glycol solution, apply a voltage of 60V, react for 18h, take out the sample and rinse it with absolute ethanol, N 2 Blow dry to obtain TiO with a height perpendicular to the titanium sheet substrate 2 nanotube film. At room temperature, 1 gram of polyoxyethylene-polyoxypropylene-polyoxyethylene triblock polymer was dissolved in 10 ml of absolute ethanol, and after complete dissolution, 0.2 ml of acetylacetone and 5 ml of ethyl titanate were added dropwise, Then add 1 ml of concentrated hydrochloric acid and 0.2 ml of deionized water; stir at room temperature for 0.5 hours to obtain a titanium precursor sol. TiO prepared by anodic oxidation method by immersion 2 The nanotube film is immersed in the titanium precursor, and the surface is rinsed with absolute ethanol after the gel is formed. Insulate at a temperature of 450°C for 3 hours, and cool to room temperature naturally. In this way, a nanocomposite film c...

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Abstract

The invention discloses a method for preparing a nanometer composite film consisting of a titanium dioxide nanotube and a nanocrystalline. The method has the following steps of: preparing a titanium dioxide nanotube vertically on a titanium substate by an anodizing method; filling a precursor sol which can form the nanocrystalline into the nanotube, and carrying out heat treatment to obtain the nanometer composite film consisting of the titanium dioxide nanotube and the nanocrystalline. The invention has the advantages of simple preparing process, low cost and controllable film structure. The composite film prepared by the method can be used as the photoanode of the solar battery, and is favorable for enhancing the photoabsorption and electronic transmission of the photoanode.

Description

technical field [0001] The invention relates to a solar cell material preparation technology, specifically a method for preparing a nanocomposite film composed of titanium dioxide nanotubes and nanocrystals. Background technique [0002] Global climate change, energy conservation and emission reduction are currently hot issues that the world is concerned about. With the continuous development of economy and society and the depletion of non-renewable energy such as coal, oil and natural gas, the energy problem has become a serious challenge to the survival and development of all human beings. As an important aspect of energy technology, the research on green new energy technologies such as solar cells has become a research hotspot in the scientific community. Solar cells have the advantages of simple structure, easy manufacture, and low cost. For solar cells, how to obtain photovoltaic devices with low cost and high photoelectric conversion efficiency from the principle to ...

Claims

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Application Information

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IPC IPC(8): B82B3/00H01G9/042H01G9/20H01M14/00H01L51/48
CPCY02E10/50Y02E10/549
Inventor 黄婵燕陈鑫陶俊超孙艳戴宁
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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