Preparation method of carbon nanofiber film without metal catalyst

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...

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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

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