Supercharge Your Innovation With Domain-Expert AI Agents!

Method for preparing carbon nanotubes by means of self-propagating combustion

A technology of self-propagating combustion and carbon nanotubes, which is applied in the direction of carbon nanotubes and nanocarbons, can solve the problems of complex preparation process, low carbon source utilization rate, and high equipment requirements, and achieve low growth temperature, low equipment requirements, The effect of little environmental pollution

Active Publication Date: 2018-11-23
BEIJING UNIV OF CHEM TECH
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing carbon nanotubes by means of self-propagating combustion
  • Method for preparing carbon nanotubes by means of self-propagating combustion
  • Method for preparing carbon nanotubes by means of self-propagating combustion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The first embodiment of the present invention provides a method for preparing carbon nanotubes by a self-propagating combustion method using precursor iron acetylacetonate and nickel foam substrates. The method comprises the steps of:

[0036] 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.

[0037] 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.

[0038] Step 3: Drying - place the fully soaked nickel foam at 60 o C blast oven, drying standby.

[0039] Step 4: Ignition - the substrate is ignited close to the lighter flame, and the burning time is about 5 s.

[0040] Step 5: Finished ...

Embodiment 2

[0042] The second embodiment of the present invention provides a method for preparing carbon nanotubes by using precursor iron acetylacetonate and copper foam substrate by self-propagating combustion method. The method comprises the steps of:

[0043] Step 1: Pretreatment - Soak the copper foam in acetone, ultrasonic for 15 minutes, then wash with ethanol and water twice, ultrasonic for 15 minutes each time, and vacuum dry for later use.

[0044] 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 copper foam Soak in the above solution and shake vigorously for 1 min.

[0045] Step 3: Drying - place the fully soaked copper foam at 60 o C blast oven, drying standby.

[0046] Step 4: Ignition - The substrate is ignited next to a match flame, and the burning time is about 5 s.

[0047] Step 5: Finished product - A...

Embodiment 3

[0049] The third embodiment of the present invention provides a method for preparing carbon nanotubes by a self-propagating combustion method using a precursor iron acetylacetonate and an iron / nickel foam substrate.

[0050] Step 1: Pretreatment—Immerse the iron / 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.

[0051]Step 2: Soaking—dissolve 3 g of iron acetylacetonate in 100 mL of anhydrous methanol, ultrasonically oscillate for 30 minutes, and stir for 5 minutes to fully dissolve iron acetylacetonate in methanol. Take 1*2 cm cut iron / The nickel foam was soaked in the above solution and vibrated vigorously for 1 min.

[0052] Step 3: Drying - place the fully soaked iron / nickel foam at 60 o C blast oven, drying standby.

[0053] Step 4: Ignition - the substrate is ignited close to the lighter flame, and the burning time is about 5 s.

[0054] Step 5: Finishe...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method for preparing carbon nanotubes by means of self-propagating combustion. The method comprises the steps of fully infiltrating a solution of a precursor such as ferricacetylacetonate on a substrate, drying, enabling one corner of the substrate to be ignited when the corner is contacted with flame, quickly removing a fire source, enabling the precursor to be burnt from one end to the other end, and generating the carbon nanotubes after combustion is finished. The method for preparing the carbon nanotubes is simple in preparation and convenient to operate, does not need additional equipment, is less in pollution to the environment, and can realize massive preparation. The prepared composite material of the carbon nanotubes and the substrate can be used for photothermal conversion, supercapacitors, lithium ion batteries, wave absorbing, electromagnetic shielding, and the like.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and in particular relates to a method for preparing carbon nanotubes by self-propagating combustion. Background technique [0002] Nanomaterials are considered to be a hotspot in the field of material research across the century, and have the reputation of "the most promising material in the 21st century". In November 1991, the carbon nanotubes discovered by Sumio Lijima of the Basic Research Laboratory of Japan Electric Corporation (NEC) were used as new nanomaterials. With its unique physical and chemical characteristics, important basic research significance and potential application value in the fields of molecular devices and composite materials, it has increasingly attracted people's attention. [0003] Carbon nanotubes, also known as Buckytubes, belong to the Fullerian carbon system. It is mainly a carbon tube with a small radial size that is rolled into a cylindrical shape b...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C01B32/16
CPCC01B32/16
Inventor 李晓锋韩霜李伟戴千闵芃于中振
Owner BEIJING UNIV OF CHEM TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com