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Method for preparing terbium oxide assembled carbon nano tube composite material

A technology of carbon nanotubes and composite materials, which is applied in the field of preparation of new composite materials of carbon nanotubes assembled with terbium trioxide, can solve the problems of low coating rate and filling rate, affecting material properties, etc., and the method is simple and good Catalytic, good application prospects

Inactive Publication Date: 2005-12-21
DONGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above assembly of carbon nanotubes is mainly to coat or fill carbon nanotubes with rare earth compounds. Although the preparation technology of simple coating and filling is constantly improving, the low coating rate and filling rate are still unsolved problems. This will definitely affect the performance of the assembled material
Coating and filling carbon nanotubes with rare earth compounds at the same time is expected to achieve the desired performance of the assembled carbon nanotubes, but the simultaneous coating and filling assembly method has not been reported yet.

Method used

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  • Method for preparing terbium oxide assembled carbon nano tube composite material
  • Method for preparing terbium oxide assembled carbon nano tube composite material
  • Method for preparing terbium oxide assembled carbon nano tube composite material

Examples

Experimental program
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Embodiment 1

[0026] Dissolve 3.2g terbium heptoxide in concentrated nitric acid, remove excess nitric acid by heating, and evaporate to dryness to prepare terbium nitrate crystals. At room temperature, terbium nitrate crystals and 40ml concentrated nitric acid are stirred and mixed at a speed of 400 rpm, and then Add 1g of carbon nanotubes, ultrasonically disperse, and reflux in an oil bath at 120°C for 6 hours. When the temperature of the refluxed mixture drops to room temperature, titrate with 15mol / L ammonia water until the pH is 8, and the titrated solution Filtrate with a filter membrane with a filter hole diameter of 0.65 μm, wash the filtrate with deionized water several times, and dry it in an oven at 80 ° C for 10 hours. After the filtrate is dried, carbon nanotubes assembled with terbium hydroxide are obtained. Put it into a quartz boat, put it into a tube-type atmosphere furnace, feed nitrogen, the gas flow rate is 1 liter / min, the heating rate is 5°C / min, from room temperature t...

Embodiment 2

[0034] Dissolve 4.0g terbium heptoxide in concentrated nitric acid, heat to remove excess nitric acid, and evaporate to dryness to prepare terbium nitrate crystals. At room temperature, terbium nitrate crystals and 40ml concentrated nitric acid are stirred and mixed at a speed of 600 rpm, and then Add 0.5g of carbon nanotubes, ultrasonically disperse, and reflux in an oil bath at 140°C for 3 hours. When the temperature of the refluxed mixture drops to room temperature, titrate with 30mol / L ammonia water until the pH is 9, and the titrated The solution was filtered with a filter membrane of 1.25 μm, and the filtrate was washed with deionized water several times, and then dried in an oven at 80°C for 12 hours. After the filtrate was dried, carbon nanotubes assembled with terbium hydroxide were obtained, which were placed in a quartz boat In a tube-type atmosphere furnace, argon gas is introduced, the gas flow rate is 2 liters / min, and the heating rate is 10°C / min. -1 The tempera...

Embodiment 3

[0036]Dissolve 3.2g terbium heptoxide in concentrated nitric acid, heat to remove excess nitric acid, and evaporate to dryness to prepare terbium nitrate crystals. At room temperature, terbium nitrate crystals and 40ml concentrated nitric acid are stirred and mixed at a speed of 800 rpm, and then Add 0.5 g of carbon nanotubes, ultrasonically disperse, and reflux in an oil bath at 120° C. for 8 hours. When the temperature of the refluxed mixture drops to room temperature, titrate with 70 mol / L ammonia water, and prepare as described in Example 1 below . X-ray diffraction and transmission electron microscope analysis showed that terbium trioxide assembled carbon nanotubes.

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Abstract

The invention relates to a preparation method for Tb2O3 assembled carbon nanometer tube compound material. Dissolve Tb2O3 in the aqua fortis, the preparation of Tb(NO3)3 crystal, under the room temperature, joined the carbon nano tube in the aqua fortis which included Tb(NO3 )3, supersonic disperser, 120 íµ - 140 íµ oil baths backflow 3 - 8 hours, when the backflow intermixture temperature drop to room temperature, carried on 15 - 70mol / l soluble alkali Titration, the filter diaphragm filtered, washes, dry 5 - 12 hours in 60 - 100 íµ; In the inert atmosphere, when the room temperature rise to 250 íµ, then maintains 1 - 2 hours, then elevates temperature to 400 - 700 íµ, maintains 0.5-3 hour, cools to the room temperature, then forms Tb2O3 assemblies carbon nanometer tube compound material. Advatages: simple method, good catalysis, good electricity and optical performance.

Description

technical field [0001] The invention relates to a preparation method of a novel composite material of carbon nanotubes, in particular to a preparation method of a novel composite material of terbium trioxide assembled carbon nanotubes. Background technique [0002] Carbon nanotubes have attracted great attention from scientists for their unique physical and chemical properties. Studies have shown that the assembly of carbon nanotubes with inorganic, organic, and biological materials will produce more excellent physical and chemical properties, such as better electrical properties, optical properties, mechanical properties, adsorption properties and wave absorption properties, etc., will have a broader At the same time, carbon nanotubes can also be used as templates to assemble nanowires and nanotubes. These nanowires and nanotubes will be important raw materials for the next generation of nanodevices. The assembled carbon nanotubes will have important applications in cataly...

Claims

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Application Information

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IPC IPC(8): C01B31/02
Inventor 曹慧群朱美芳李耀刚
Owner DONGHUA UNIV
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