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Method for preparing rutile nano-stick array membrane

A nanorod array, rutile technology, applied in the coating and other directions, can solve the problem of not finding rutile nanostructures, and achieve the effect of regular arrangement, uniform diameter size distribution, and high specific surface

Inactive Publication Date: 2008-10-29
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, Yong Zhou et al. (Yong Zhou, Markus Antonietti, Synthesis of very small TiO2 nanocrystals in a room temperature ionic liquid and their self-assembly toward mesoporous spherical aggregates, J.Am.Chem.Soc., 2003, 125: 14960-14961) utilize water-soluble Anatase nanoparticles with a particle size of about 30nm have been successfully prepared with ionic liquids, and the particles have been found to be agglomerated from smaller nanoparticles. Related reports on the rutile nanostructure

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Example 1: A method for preparing a rutile nanorod array film using ordinary glass as a substrate.

[0017] 1) Adding a concentration of 0.4 mol / liter of ionic liquid 1-butyl-3-methylimidazolium bromide and titanium tetrachloride into hydrochloric acid with a concentration of 6 mol / liter makes a mixed solution and stirs evenly. In the mixed solution, the concentration of the final 1-butyl-3-methylimidazolium bromide ionic liquid is 0.2 mol / liter, and the concentration of titanium tetrachloride is 0.2 mol / liter; 2) the common glass substrate is dipped in a mass concentration of 0.05g / mL Degussa P25 suspension solution, then annealed at 100-200°C for 2 hours; 3) Immerse the above substrate in the mixed solution and react at 80°C for 48 hours; 4) Take out the substrate Afterwards, it is washed with water to neutrality and dried to obtain a rutile nanorod array thin film deposited on a glass slide. The crystal phase of the product is pure rutile through electron scanning e...

Embodiment 2

[0018] Embodiment 2: A method for preparing a rutile nanorod array film using a rutile single wafer as a substrate.

[0019] 1) Adding 0.6 mol / liter of ionic liquid 1-butyl-3-methyl imidazole chloride and titanium sulfate into hydrochloric acid with a concentration of 6 mol / liter to make a mixed solution and stir evenly, in the prepared mixed solution Among them, the final concentration of 1-butyl-3-methylimidazolium chloride ionic liquid is 0.4 mol / liter, and the concentration of titanium sulfate is 0.4 mol / liter; mL of Degussa P25 suspension solution, and then annealed at 100-200°C for 2 hours; 3) Immerse the above substrate in the mixed solution and react at 120°C for 12 hours; 4) Take out the substrate and wash it with water After drying to neutrality, the rutile nanorod array thin film deposited on the glass slide can be obtained. Scanning electron microscope and X-ray diffraction test show that the crystal phase of the product is pure rutile phase, and the structure is ...

Embodiment 3

[0020] Example 3: A method for preparing a rutile nanorod array film using a polytetrafluoroethylene sheet as a substrate.

[0021] 1) Adding 0.6 mol / liter of ionic liquid 1-octyl-3-methyl imidazole bromide and titanyl nitrate into hydrochloric acid with a concentration of 6 mol / liter to make a mixed solution and stir evenly. In the solution, the concentration of the final 1-octyl-3-methylimidazolium bromide ionic liquid is 0.5 mol / liter, and the titanyl nitrate concentration is 0.2 mol / liter; 2) the polytetrafluoroethylene substrate is dipped in a mass concentration of 0.05g / mL Degussa P25 suspension solution, then annealed at 100-200°C for 2 hours; 3) Immerse the above substrate in the mixed solution and react at 140°C for 20 hours; 4) Take out the substrate Afterwards, it is washed with water to neutrality and dried to obtain a rutile nanorod array thin film deposited on a glass slide. The crystal phase of the product is pure rutile through electron scanning electron micro...

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PUM

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Abstract

A preparation method for a rutile nano-rod array film adopts the hydro-thermal synthesis technique and is prepared in water soluble ionic liquid. The preparation method has the following steps: (1) dissolving soluble titanium source in hydrochloric acid aqueous solution, then adding imidazole salt-typed ionic liquid to obtain mixing solution; (2) leading a uropatagia in a inoculating seed in a way of the uropatagia dipping Degussa P25 suspended solution and then carrying out annealing treatment; (3) immerging the uropatagia led in the inoculating seed into the mixing solution to carry out hydro-thermal synthesis reaction; (4) taking out the uropatagia and washing the uropatagia to be neutral, and obtaining a single layer film of rutile nano-rod array in dispersive arrangement after drying the uropatagia. The invention has the advantages of simple method, low cost, good crystal property, large length-diameter ratio and even distribution of diameter size of the nano-rods and high specific surface. The dispersed spaces between rods can be effectively filled with a plurality of substances and the rutile nano-rod array film prepared by the preparation method can be widely used in the fields of dye-sensitized solar cell electrodes, oxygen sensors, etc.

Description

(1) Technical field [0001] The invention relates to a method for preparing titanium dioxide nanorods in the technical field of solar cells, in particular to a method for preparing a rutile nanorod array film. (2) Background technology [0002] Titanium dioxide has three crystal forms: anatase phase, brookite phase and rutile phase. Rutile is the most widely distributed in nature, while anatase and brookite are rare. Anatase and brookite are thermodynamic metastable phases, and rutile As stable phases, anatase and brookite transform into rutile at high temperatures. In recent years, the application of dye-sensitized titanium dioxide nanocrystal solar cells has received great attention. When the light source irradiates the dye on the outer layer of the electrode, the electrons in the dye are excited and form a photocurrent injected into titanium dioxide. Titanium dioxide is The current and the external circuit provide a connection channel. At this time, the redox agent in the...

Claims

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Application Information

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IPC IPC(8): C03C17/23C04B41/50C08J7/06
Inventor 郑文君彭鹏
Owner NANKAI UNIV
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