Preparation method of carbon nanofiber film without metal catalyst

A technology of carbon nanofibers and metal catalysts, which is applied in the direction of nanocarbons and graphene, can solve the problems of difficult removal, difficulty in realizing low-cost and large-scale production of carbon nanofiber films, and limiting the application range of carbon nanofiber films. Pollution reduction, easy industrial scale production, light weight effect

Active Publication Date: 2019-11-22
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

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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Experimental program
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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 preparation method of a carbon nanofiber film without a metal catalyst. The method comprises the following steps of immersing an aluminum sheet into a copper nitrate aqueoussolution; taking out the aluminum sheet and drying, putting the obtained aluminum sheet loaded with the copper nitrate on the surface into a ceramic container; enabling the aluminum sheet to be covered with the ceramic product fragment, then placing a ceramic container of which the bottom is covered with the aluminum sheet loaded with the copper nitrate on the surface and the ceramic product fragment orderly in the mixed atmosphere of acetylene and argon at 420-460 DEG C below for 20-40 hours, and preparing a product on the surfaces of the ceramic container and the ceramic product fragment. The method not only prepares the carbon nanofiber film without the metal catalyst, but also has the characteristics of low cost, high yield and easiness in industrial large-scale production, and can realize the recycling of various ceramics and construction wastes, so that the environmental pollution is reduced. The prepared product has the characteristics of light weight, hydrophobicity and good mechanical properties, and can be easily, widely and commercially applied to various oil leakage cleaning fields.

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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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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