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A kind of preparation method of boron phosphate modified carbon nanotube

A technology of carbon nanotubes and boron phosphate, applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problem of destroying the structure of carbon nanotubes, complex modification methods, weakening the physical properties of carbon nanotubes, etc. problems, to achieve the effect of good compatibility, simple method and excellent electrochemical performance

Active Publication Date: 2016-09-21
HUBEI ENG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Based on the current research, non-covalent physical modification and covalent chemical modification are often used. However, such modification methods are relatively complicated, which destroys the structure of carbon nanotubes to a certain extent and weakens the physical properties of carbon nanotubes. It can be seen that a simple and efficient method for surface modification of carbon nanotubes is particularly important.

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  • A kind of preparation method of boron phosphate modified carbon nanotube
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  • A kind of preparation method of boron phosphate modified carbon nanotube

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Embodiment 1

[0026] A preparation method of boron phosphate modified carbon nanotubes, the steps are as follows:

[0027] (1) preparation concentration is 100ml of Tris (trishydroxymethylaminomethane) solution of 1mmol / L, the hydrochloric acid regulation solution pH value that adds 0.1mol / L is 10, obtains alkaline solution; 500mg dopamine and 500mg carbon nanotube ( 10nm in diameter and 15-30um in length) placed in the prepared alkaline solution, ultrasonically dispersed for 1 hour, continued to stir at room temperature for 2 hours, then vacuum filtered, washed 3 times with absolute ethanol, and then deionized water Washing 3 times until the filtrate is colorless and drying to obtain polydopamine-modified carbon nanotubes (DOPA-CNTs);

[0028] (2) Add 100 mg of dried DOPA-CNTs obtained in step (1) together with 150 mg of solid phosphoric acid into 200 ml of N,N-dimethylacetamide (DMAC), ultrasonically disperse for 1 hour, then heat up under continuous magnetic stirring to 80° C., then slo...

Embodiment 2

[0031] A preparation method of boron phosphate modified carbon nanotubes, the steps are as follows:

[0032] (1) preparation concentration is the Tris (trishydroxymethylaminomethane) solution 100ml of 10mmol / L, the hydrochloric acid regulation solution pH value that adds 0.1mol / L is 9, obtains alkaline solution; 200mg dopamine and 200mg carbon nanotube ( 10nm in diameter and 15-30um in length) placed in the prepared alkaline solution, ultrasonically dispersed for 1 hour, continued to stir at room temperature for 4 hours, then vacuum filtered, washed 3 times with absolute ethanol, and then deionized water Washing 3 times until the filtrate is colorless and drying to obtain polydopamine-modified carbon nanotubes (DOPA-CNTs);

[0033] (2) Add 80 mg of dried DOPA-CNTs obtained in step (1) together with 75 mg of solid phosphoric acid into 200 ml of N,N-dimethylacetamide (DMAC), ultrasonically disperse for 1 hour, and heat up under continuous magnetic stirring to 80° C., then slowl...

Embodiment 3

[0036] A preparation method of boron phosphate modified carbon nanotubes, the steps are as follows:

[0037] (1) preparation concentration is 100ml of Tris (trishydroxymethylaminomethane) solution of 20mmol / L, the hydrochloric acid regulation solution pH value that adds 0.1mol / L is 8, obtains alkaline solution; 100mg dopamine and 100mg carbon nanotube ( 10nm in diameter and 15-30um in length) placed in the prepared alkaline solution, ultrasonically dispersed for 1 hour, continued to stir at room temperature for 8 hours, then vacuum filtered, washed 3 times with absolute ethanol, and then deionized water Washing 3 times until the filtrate is colorless and drying to obtain polydopamine-modified carbon nanotubes (DOPA-CNTs);

[0038] (2) Add 60 mg of the dried DOPA-CNTs obtained in step (1) together with 38 mg of solid phosphoric acid into 100 ml of N,N-dimethylacetamide (DMAC), ultrasonically disperse for 1 hour, and heat up under continuous magnetic stirring to 80°C, then slow...

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Abstract

The invention relates to the technical field of nanometer materials and particularly discloses a method for preparing a boron phosphate modified carbon nano tube. The method comprises the following steps: firstly, under the room temperature, dopamine is in oxidative polymerization reaction in a Tris-HCl buffer solution to modify the surface of the carbon nano tube so as to obtain a poly-dopamine modified carbon nano tube; then, the sol-gel method is adopted to clad boron phosphate on the surface of the poly-dopamine modified carbon nano tube, the reaction is performed for a certain period of time, and finally, the boron phosphate modified carbon nano tube which is uniform and stable in structure is obtained. According to the invention, the cost is low, the steps are simple, the conditions are controllable, a referential method for composite preparation of other types of inorganic substances and nanometer materials is provided, and the obtained product has potential application prospects in the fields of electricity, optics, catalysis and the like.

Description

technical field [0001] The invention relates to the technical field of nanomaterials, in particular to a method for preparing boron phosphate-modified carbon nanotubes. Background technique [0002] Boron phosphate (BPO 4 ) as an acid catalyst has been widely used in a series of reactions in the past three decades, including special dehydration reactions. BPO 4 Belongs to orthophosphate, P 5- and B 3- At the same time, it is coordinated by oxygen atoms to form a regular tetrahedral structure. Although it was previously argued that BPO 4 Adsorbed water on the surface may have electrochemical properties, but it was not until 1998 that Mikhailenko (J.Chem.Soc., Faraday Trans.94:1613-1618) and his research team discovered that boron phosphate could be used as a solid proton conductor and studied its electrochemical performance. Therefore, boron phosphate is considered to have extremely high application potential in electrochemical fields such as fuel cells (CN 101891955B)...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/02B82Y30/00
Inventor 郑譞文胜龚春丽汪广进刘海汪杰耿青程凡郑根稳
Owner HUBEI ENG UNIV
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