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Preparation method for heteropoly acid functional composite material adopting dopamine modified carbon nano tube as carrier

A technology of carbon nanotubes and composite materials, applied in the fields of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc. Effect

Active Publication Date: 2015-04-01
HUBEI ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These liquid waters facilitate the transport of protons, but are easily dissolved

Method used

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  • Preparation method for heteropoly acid functional composite material adopting dopamine modified carbon nano tube as carrier
  • Preparation method for heteropoly acid functional composite material adopting dopamine modified carbon nano tube as carrier
  • Preparation method for heteropoly acid functional composite material adopting dopamine modified carbon nano tube as carrier

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Embodiment 1

[0026] A preparation method of a heteropolyacid functional composite material using dopamine-modified carbon nanotubes as a carrier, the steps are as follows:

[0027] (1) preparation concentration is 100ml of Tris (trishydroxymethylaminomethane) solution of 1mmol / L, the hydrochloric acid adjustment solution pH value that adds 0.1mol / L is 10, the alkaline solution of dopamine; Mix 10mg dopamine and 10mg carbon nanometer The tube (10nm in diameter and 15-30um in length) was placed in the prepared alkaline solution of dopamine. After ultrasonic dispersion for 1 hour, it was stirred at room temperature for 24 hours, then vacuum filtered, washed 3 times with absolute ethanol, and then Washed 3 times with deionized water until the filtrate was colorless and dried to obtain polydopamine-modified carbon nanotubes (DOPA-CNTs);

[0028] (2) Add 10 mg of dry DOPA-CNTs obtained in step (1) to 100 ml of 1 mmol / L phosphomolybdic acid (H 3 PMo 12 o 40 28H 2 O, Phosphomolybdic acid, PMA)...

Embodiment 2

[0031] A preparation method of a heteropolyacid functional composite material using dopamine-modified carbon nanotubes as a carrier, the steps are as follows:

[0032] (1) Preparation concentration is 100ml of Tris (trishydroxymethylaminomethane) solution of 10mmol / L, the hydrochloric acid adjustment solution pH value that adds 0.1mol / L is 9, the alkaline solution of dopamine; Mix 50mg dopamine and 50mg carbon nanometer The tube (10nm in diameter and 15-30um in length) was placed in the prepared alkaline solution of dopamine. After ultrasonic dispersion for 1 hour, it was stirred at room temperature for 12 hours, then vacuum filtered, washed 3 times with absolute ethanol, and then Washed 3 times with deionized water until the filtrate was colorless and dried to obtain polydopamine-modified carbon nanotubes (DOPA-CNTs);

[0033] (2) Add 50 mg of dry DOPA-CNTs obtained in step (1) to 100 ml of 10 mmol / L phosphomolybdic acid (H 3 PMo 12 o 40 28H 2 O, Phosphomolybdic acid, PMA...

Embodiment 3

[0036] A preparation method of a heteropolyacid functional composite material using dopamine-modified carbon nanotubes as a carrier, the steps are as follows:

[0037] (1) preparation concentration is 100ml of Tris (trishydroxymethylaminomethane) solution of 20mmol / L, the hydrochloric acid adjustment solution pH value that adds 0.1mol / L is 8, the alkaline solution of dopamine; Mix 100mg dopamine and 50mg carbon nanometer The tube (10nm in diameter and 15-30um in length) was placed in the prepared alkaline solution of dopamine. After ultrasonic dispersion for 1 hour, it was stirred at room temperature for 6 hours, then vacuum filtered, washed 3 times with absolute ethanol, and then Washed 3 times with deionized water until the filtrate was colorless and dried to obtain polydopamine-modified carbon nanotubes (DOPA-CNTs);

[0038] (2) Add 100 mg of dry DOPA-CNTs obtained in step (1) to 100 ml of 20 mmol / L phosphomolybdic acid (H 3 PMo 12 o 40 28H 2 O, Phosphomolybdic acid, PM...

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Abstract

The invention relates to the technical field of nanometer materials, and particularly discloses a preparation method for heteropoly acid functional composite material adopting a dopamine modified carbon nano tube as a carrier. The preparation method comprises the following steps: first, utilizing dopamine to generate oxypolymerization reaction in a Tris-HC1 buffer solution at the room temperature to modify the surface of a carbon nano tube to obtain a poly-dopamine modified carbon nano tube; then adopting an impregnation method to load heteropoly acid on the surface of the poly-dopamine modified carbon nano tube; reacting for certain time so as to obtain the heteropoly acid loading dopamine modified carbon nano tube composite material finally. The preparation method is conducive to realizing uniform and directional loading of heteropoly acid on one hand, improves the utilization ratio and the application range of the carbon nano tube on the other hand, is simple in steps and low in cost, can be reused, and has potential application prospect in the fields of fuel cells, sensors, electric coloration devices and the like.

Description

technical field [0001] The invention relates to the technical field of nanomaterials, in particular to a method for preparing a heteropolyacid functional composite material with dopamine-modified carbon nanotubes as a carrier. Background technique [0002] Heteropoly acid (HPA) is one of the most important functional materials today. Heteropolyacids are a class of eight types composed of central atoms (such as P, Si, Fe, Co, etc.) and coordination atoms (such as Mo, W, V, Nb, Ta, etc.) according to a certain structure through the coordination bridge of oxygen atoms. Face body oxygen-containing polyacid. In the solid state, heteropolyacids are mainly composed of heteropolyanions, protons and water (crystallization water and structural water). There are two types of protons in heteropolyacid crystals: one is the delocalized hydrated protons connected to the heteropolyanion as a whole; the other is the non-hydrated protons located on the bridging oxygen atoms in the heteropol...

Claims

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Application Information

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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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