Preparation method of rare earth luminescence mesoporous titania hybrid material

A technology of mesoporous titanium dioxide and rare earth luminescence, which is applied in the directions of luminescent materials, chemical instruments and methods, etc.

Inactive Publication Date: 2014-05-14
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are many studies on the incorporation of rare earth complexes into silicon-based mesoporous materials,...

Method used

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  • Preparation method of rare earth luminescence mesoporous titania hybrid material
  • Preparation method of rare earth luminescence mesoporous titania hybrid material
  • Preparation method of rare earth luminescence mesoporous titania hybrid material

Examples

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Embodiment 1

[0021] This embodiment provides a rare earth luminescent mesoporous titanium dioxide hybrid material, the preparation of which includes the following steps:

[0022] (1) Weigh 1g of P123 and dissolve it in 20g of ethanol, add 1.26ml of 6mol / L HCl solution and 1.5-2ml of titanium tetraisopropoxide successively under full stirring, stir at a constant temperature of 25°C for 24h, and then use a rotary evaporator to Rotary evaporate the excess ethanol solution, put it in an oven at 40°C and dry it into a gel. After adding ammonia water to the gel product, seal the container and let it stand at room temperature for 24 hours to produce a white precipitate. Dry the white precipitate at 65°C , collect the precipitate, reflux in an ethanol solvent to remove the template agent, and obtain ordered mesoporous titanium dioxide;

[0023] (2) Put 2,2'-bipyridine-4,4'-dicarboxylic acid and the prepared ordered mesoporous titanium dioxide in N,N'-dimethylformaldehyde at a molar ratio of (0.5~1...

Embodiment 2

[0027] This example provides a method for preparing a rare earth luminescent mesoporous titanium dioxide hybrid material, the basic steps of which are the same as those of Example 1, except that the following specific steps are different:

[0028] (1) Weigh 1g of P123 and dissolve it in 20g of ethanol, add 1.26ml of 6mol / L HCl solution and 1.5-2ml of titanium tetraisopropoxide successively under full stirring, stir at a constant temperature of 25°C for 24h, and then use a rotary evaporator to Rotary evaporate the excess ethanol solution, put it in an oven at 40°C and dry it into a gel. After adding ammonia water to the gel product, seal the container and let it stand at room temperature for 24 hours to produce a white precipitate. Dry the white precipitate at 65°C , collect the precipitate, reflux in an ethanol solvent to remove the template agent, and obtain ordered mesoporous titanium dioxide;

[0029] (2) Put 2,2'-bipyridine-4,4'-dicarboxylic acid and the prepared ordered m...

Embodiment 3

[0033] This example provides a method for preparing a rare earth luminescent mesoporous titanium dioxide hybrid material, the basic steps of which are the same as those of Example 1, except that the following specific steps are different:

[0034] (1) Weigh 1g of P123 and dissolve it in 20g of ethanol, add 1.26ml of 6mol / L HCl solution and 1.5-2ml of titanium tetraisopropoxide successively under full stirring, stir at a constant temperature of 25°C for 24h, and then use a rotary evaporator to Rotary evaporate the excess ethanol solution, put it in an oven at 40°C and dry it into a gel. After adding ammonia water to the gel product, seal the container and let it stand at room temperature for 24 hours to produce a white precipitate. Dry the white precipitate at 65°C , collect the precipitate, reflux in an ethanol solvent to remove the template agent, and obtain ordered mesoporous titanium dioxide;

[0035] (2) Put 2,2'-bipyridine-4,4'-dicarboxylic acid and the prepared ordered m...

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Abstract

The invention discloses a preparation method of a rare earth luminescence mesoporous titania hybrid material. The preparation method mainly comprises the following steps: firstly, synthesizing an ordered mesoporous titania material and modifying the mesoporous titania through 2,2'-dipyridyl-4,4'-dicarboxylic acid; then enabling the modified ordered mesoporous titania and synthesized binary rare earth complexes to carry out reflux reaction for hours in ethyl alcohol and obtain a solid product; and washing and drying to prepare a rare earth luminescence mesoporous titania hybrid material. Through the preparation method of the rare earth luminescence mesoporous titania hybrid material, the rare earth complexes are grafted to an ordered mesoporous titania matrix through a covalent bond; the prepared rare earth luminescence mesoporous titania hybrid material is capable of obtaining visual and near-infrared light emission under visible light excitation; and the rare earth luminescence mesoporous titania hybrid material shows potential application prospects in solar cells and biological materials.

Description

technical field [0001] The invention belongs to the technical field of preparation of rare earth multifunctional mesoporous materials, and in particular relates to a preparation method of rare earth luminescent mesoporous titanium dioxide hybrid materials. Background technique [0002] Ordered mesoporous titanium dioxide has shown broad application prospects in solar cells, water pollution control, and photocatalysis due to its porous and high specific surface area. As an important photocatalyst, mesoporous titanium dioxide has higher catalytic activity than nanoparticle titanium dioxide, and the high specific surface area of ​​its ordered mesoporous structure increases its adsorption capacity, which can be used as a carrier for drug release and organic transport, in chemical sensors, Luminescent materials and nanomaterial microreactors are expected to play a greater role. [0003] Rare earth organic complexes have been recognized earlier as efficient luminescent substances...

Claims

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Application Information

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IPC IPC(8): C09K11/67C09K11/06
Inventor 施利毅孙丽宁王志娟韦族武刘金亮
Owner SHANGHAI UNIV
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