Preparation method of hollow nitrogen-doped carbon nanotubes

Abstract

The invention belongs to the field of inorganic non-metal materials, and particularly relates to a preparation method of hollow nitrogen-doped carbon nanotubes. According to the preparation method, asilicon dioxide template is prepared by using tetraethyl orthosilicate (TEOS) as a silicon dioxide precursor, 3-amino phenol formaldehyde resin (APF) is used as carbon source and a nitrogen source, aconcentration of a nickel chloride solution, addition amounts of 3-aminophenol and formaldehyde and carbonization temperature are adjusted to realize control of a length-diameter ratio, a nitrogen content and structural parameters of a Ni@N doped C composite material, and after etching is performed to remove silicon, the hollow nitrogen-doped carbon nanotubes with a high N content, a high specificsurface area, a large pore volume, the adjustable length-diameter ratio and a mesoporous size can be finally prepared.

Description

technical field [0001] The invention belongs to the field of inorganic non-metallic materials, in particular to a method for preparing hollow nitrogen-doped carbon nanotubes. Background technique [0002] One-dimensional (1D) tubular nanostructures not only possess high geometric aspect ratios and excellent mechanical rigidity, but also can be used in nanodevices with 1D structures of different chemical compositions and basic structural modules with special applications. In 1991, Dr. Lijima of the Basic Research Laboratory of NEC Corporation of Japan discovered multi-walled carbon nanotubes (originally named graphiticcarbon) for the first time and published them in the journal Nature, announcing the official discovery of carbon nanotubes. This one-dimensional carbon nanotube has excellent tensile strength, bending resistance, good chemical stability, high current carrying capacity, and excellent electrical and thermal conductivity. At present, tubular nanomaterials have bee...

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Problems solved by technology

However, the above method has the disadvantages of expensive raw materials, complex synthesis process, and low single-synthesis yield.

[0005] At present, the preparation of carbon nanotubes has complex synthesis methods, great difficulty in preparation, and high cost. Most of them use chemical vapor deposition methods and low yields. Therefore, it is necessary to provide a method that can prepare high-quality and large-scale ordered carbon nanotubes. method is very important

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