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Method for preparing carbon nano-tube through solution burning

A carbon nanotube, solution combustion technology, applied in the direction of carbon nanotubes, nanocarbons, etc., can solve the problems of complex preparation process, high equipment requirements, low utilization rate of carbon sources, etc., and achieves low growth temperature, low equipment requirements, The effect of less environmental pollution

Active Publication Date: 2018-11-27
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods have certain defects, such as higher requirements on equipment, higher energy consumption, lower utilization of carbon sources, and more complicated preparation processes. At the same time, these synthesis methods require harsh experimental conditions, such as inert gas Protection, high temperature and high pressure, etc., greatly increase the danger in the synthesis process

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  • Method for preparing carbon nano-tube through solution burning
  • Method for preparing carbon nano-tube through solution burning
  • Method for preparing carbon nano-tube through solution burning

Examples

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Embodiment 1

[0032] The first embodiment of the present invention provides a method for preparing carbon nanotubes by a solution combustion method using an ethanol solution of iron acetylacetonate with a concentration of 30 mg / mL and a nickel foam substrate. The method comprises the steps of:

[0033] Step 1: Pretreatment - Soak the nickel foam in acetone, sonicate for 15 minutes, then wash with ethanol and water for 2 times each, sonicate for 15 minutes each time, and vacuum dry for later use.

[0034] Step 2: Soaking—dissolve 3 g of iron acetylacetonate in 100 mL of absolute ethanol, ultrasonically oscillate for 30 minutes, and stir for 5 minutes to fully dissolve iron acetylacetonate in ethanol. Take 1*2 cm of cut nickel foam Soak in the above solution and shake vigorously for 1 min.

[0035] Step 3: Ignition - the substrate is ignited close to the lighter flame, and the burning time is about 20 s.

[0036] Step 4: Finished product - after the combustion is completed, the target produ...

Embodiment 2

[0038] The second embodiment of the present invention provides a method for preparing carbon nanotubes by a solution combustion method using an ethanol solution of iron acetylacetonate at a concentration of 30 mg / mL and an aluminum sheet substrate. The method comprises the steps of:

[0039] Step 1: Pretreatment - Soak the aluminum sheet in acetone, ultrasonic for 15 min, then wash with ethanol and water twice, ultrasonic for 15 min each time, and vacuum dry for later use.

[0040] Step 2: Soaking—dissolve 3 g of iron acetylacetonate in 100 mL of absolute ethanol, ultrasonically oscillate for 30 minutes, and stir for 5 minutes to fully dissolve iron acetylacetonate in ethanol. Take a 5*5 cm cut-out aluminum sheet Soak in the above solution and shake vigorously for 1 min to spread the ethanol solution of iron acetylacetonate on the surface of the aluminum foil.

[0041] Step 3: Ignite - the substrate is ignited next to a match flame, and the burning time is about 20 s.

[004...

Embodiment 3

[0044] The third embodiment of the present invention provides a method for preparing carbon nanotubes by a solution combustion method using an ethanol solution of iron acetylacetonate at a concentration of 30 mg / mL and a copper foil substrate. The method comprises the steps of:

[0045] Step 1: Pretreatment——soak the copper foil in acetone, ultrasonicate for 15 minutes, then wash with ethanol and water for 2 times each, ultrasonically for 15 minutes each time, and vacuum dry for later use.

[0046] Step 2: Soaking—dissolve 3 g of iron acetylacetonate in 100 mL of absolute ethanol, ultrasonically oscillate for 30 minutes, and stir for 5 minutes to fully dissolve iron acetylacetonate in ethanol. Take a 5*5 cm cut copper foil Soak in the above solution and shake vigorously for 1 min to spread the ethanol solution of iron acetylacetonate on the surface of copper foil.

[0047]Step 3: Ignition - the substrate is ignited close to the lighter flame, and the burning time is about 10 ...

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Abstract

The invention relates to a method for preparing carbon nano-tubes through solution burning. The carbon nano-tubes are prepared by adopting a method of igniting precursor solutions of ferric acetylacetonate and the like on a substrate; the precursor solutions of the ferric acetylacetonate and the like are fully soaked on the substrate, the solutions are burnt after being ignited, the system temperature is increased, precursors of the ferric acetylacetonate and the like are decomposed to metal nano particles and organic small molecular carbon sources, and the organic small molecular carbon sources are catalyzed by the metal nano particles to generate the carbon nano-tubes. The method has the advantages of simple process and convenient operation in preparing the carbon nano-tubes, additionalequipment is not needed, the pollution on the environment is small, and massive production can be achieved. The prepared carbon nano-tubes can be used for optical-thermal conversion, super capacitors,lithium batteries, wave absorbing, electromagnetic shielding and the like.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and relates to a method for preparing carbon nanotubes by a combustion method, in particular to a method for preparing carbon nanotubes by solution combustion. Background technique [0002] Carbon is one of the most abundant elements on the earth. For a long time, it was believed that the simple substances of carbon were only graphite and diamond. Until 1985, Smalley et al. discovered fullerene-C in the process of studying interstellar carbon dust. 60 The existence of C 60 , C 60 The discovery of carbon has brought people into a new and rich world of carbon elements. Various carbon structures such as carbon nanotubes, carbon microtubes and graphene have gradually come into people's sight. Carbon nanotubes as C 60 The by-products of the preparation were discovered earlier. [0003] Carbon nanotubes are seamless nanoscale tube structures formed by single-layer or multi-layer graphit...

Claims

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Application Information

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IPC IPC(8): C01B32/16
CPCC01B32/16
Inventor 李晓锋韩霜戴千李伟闵芃于中振
Owner BEIJING UNIV OF CHEM TECH
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