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Preparation method of carbon nanofiber film without metal catalyst

A carbon nanofiber, metal catalyst technology, applied in nanocarbon, graphene and other directions, can solve the problems of difficult removal, difficult to achieve low-cost and large-scale production of carbon nanofiber films, limiting the application range of carbon nanofiber films, etc. Reduce pollution, easy to industrial scale production, light weight effect

Active Publication Date: 2021-10-22
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the disadvantage of this method is that the transition metal catalyst particles inside the carbon nanofibers are difficult to completely remove even with highly corrosive strong acids, which limits the application range of this carbon nanofiber film.
Although this method obtains a carbon nanofiber film without any metal catalyst, it is difficult to achieve a metal catalyst-free film due to the rough surface of strontium titanate ceramics that requires expensive argon ion etching equipment to process. Low-cost and large-scale production of carbon nanofiber films

Method used

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  • Preparation method of carbon nanofiber film without metal catalyst
  • Preparation method of carbon nanofiber film without metal catalyst

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Effect test

Embodiment 1

[0028] The concrete steps of preparation are:

[0029] Step 1, immerse the aluminum sheet in 0.08 mol / L copper nitrate aqueous solution for 40 minutes, then take it out and dry to obtain the aluminum sheet with copper nitrate supported on the surface.

[0030] Step 2, placing the aluminum sheet loaded with copper nitrate on the surface in a ceramic container, and covering it with ceramic product fragments; wherein, the ceramic container is a ceramic boat, and the ceramic product fragments are ceramic bowl fragments, and the bottom is sequentially covered with Ceramic containers with aluminum flakes and ceramic fragments loaded with copper nitrate on the surface.

[0031] Step 3, first place the ceramic container whose bottom is successively covered with copper nitrate-loaded aluminum sheet and ceramic product fragments in an argon atmosphere to raise the temperature to 420°C, and then place it in a mixed atmosphere of acetylene and argon at the same temperature 40h; Among the...

Embodiment 2

[0033] The concrete steps of preparation are:

[0034] Step 1, after immersing the aluminum sheet in 0.09 mol / L copper nitrate aqueous solution for 35 minutes, taking it out and drying it to obtain the aluminum sheet with copper nitrate supported on the surface.

[0035] Step 2, placing the aluminum sheet loaded with copper nitrate on the surface in a ceramic container, and covering it with ceramic product fragments; wherein, the ceramic container is a ceramic boat, and the ceramic product fragments are ceramic bowl fragments, and the bottom is sequentially covered with Ceramic containers with aluminum flakes and ceramic fragments loaded with copper nitrate on the surface.

[0036] Step 3, first place the ceramic container whose bottom is successively covered with copper nitrate-loaded aluminum sheet and ceramic product fragments in an argon atmosphere to raise the temperature to 430°C, and then place it in a mixed atmosphere of acetylene and argon at the same temperature 35h...

Embodiment 3

[0038]The concrete steps of preparation are:

[0039] Step 1, after immersing the aluminum sheet in 0.1 mol / L copper nitrate aqueous solution for 30 minutes, take it out and dry it to obtain the aluminum sheet with copper nitrate supported on the surface.

[0040] Step 2, placing the aluminum sheet loaded with copper nitrate on the surface in a ceramic container, and covering it with ceramic product fragments; wherein, the ceramic container is a ceramic boat, and the ceramic product fragments are ceramic bowl fragments, and the bottom is sequentially covered with Ceramic containers with aluminum flakes and ceramic fragments loaded with copper nitrate on the surface.

[0041] Step 3, first place the ceramic container whose bottom is successively covered with copper nitrate-loaded aluminum sheet and ceramic product fragments in an argon atmosphere to raise the temperature to 440°C, and then place it in a mixed atmosphere of acetylene and argon at the same temperature 30h; Among...

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Abstract

The invention discloses a method for preparing a carbon nanofiber film without a metal catalyst. It first immerses the aluminum flakes in the copper nitrate aqueous solution, takes them out and dries them, then puts the obtained aluminum flakes loaded with copper nitrate on the surface in a ceramic container, and covers them with fragments of ceramic products. After that, the obtained bottoms are successively The ceramic container covered with copper nitrate-loaded aluminum flakes and ceramic product fragments is placed in a mixed atmosphere of acetylene and argon at 420-460°C for 20-40h, and the product is obtained on the surface of the ceramic container and ceramic product fragments . It not only produces carbon nanofiber films without metal catalysts, but also has the characteristics of low cost, large output, and easy industrial scale production. It can also realize the recycling of various ceramics and construction waste, thereby reducing environmental pollution; The prepared product has the characteristics of light weight, hydrophobicity and good mechanical properties, and is extremely easy to be widely commercialized and applied in the field of cleaning up various oil spills.

Description

technical field [0001] The invention relates to a method for preparing a carbon nanofiber film, in particular to a method for preparing a carbon nanofiber film without a metal catalyst. Background technique [0002] Carbon nanofiber films, which have the advantages of light weight, large specific surface area, high electrical conductivity, and strong chemical and mechanical stability, have a wide range of applications in the fields of high-capacity oil absorbents, electrochemical catalyst supports, supercapacitors, and lithium-ion batteries. application. At present, the preparation methods of carbon nanofiber films mainly include electrospinning, hydrothermal, carbonization of biomass materials, electrolysis and chemical vapor deposition. Compared with other methods, chemical vapor deposition has the advantages of simple operation, strong controllability, Low cost and other advantages. As in "Large-scale synthesis, annealing, purification, and magnetic properties of crysta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B41/85C01B32/186
CPCC04B41/5001C04B41/85C01B32/186C04B41/4596C04B41/4531
Inventor 赵相龙孟国文钱欧
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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