Method for preparing carbon nano-tube or rod by hydrothermal process

Abstract

The invention discloses a method for preparing carbon nanotubes or nano-rods by the hydrothermal method. The method includes the following steps: (1) dissolving sucrose or glucose into nonvolatile acid aqueous solution, and intensively mixing; and (2) transferring the solution prepared in step (1) into a hydrothermal reaction kettle and carrying out hydrothermal reaction at 100-240 DEG C for 2-24hours, naturally cooling to room temperature, separating, washing, and drying to obtain carbon nanotubes or nano-rods. The method has the advantages of mild reaction conditions and simple process. Theprepared carbon nanotubes or nano-rods are not wound but very straight and have good dispersity and repeatability, which can be used as chemical reaction material and catalyst carrier, with wide application prospect in electrochemical energy storage and microelectronics aspects.

Description

technical field

[0001] The invention relates to a method for synthesizing carbon nanotubes or rods, in particular to a method for preparing carbon nanotubes or rods by a hydrothermal method. Background technique

[0002] Since the discovery of carbon nanotubes by Iijima in 1991 [1], because of its unique structure and potential superior performance, it has been determined that it will have great development prospects in the fields of physics, chemistry and material science.

[0003] Carbon nanotubes are tubular objects composed of graphite-like hexagonal grids. Generally, the tubes can be composed of one or more layers, with a diameter ranging from a few nanometers to tens of nanometers and a length of several microns. The spacing is 0.34nm, which is slightly larger than the interlamellar spacing (0.335nm) of graphite. Carbon nanotubes have excellent field emission properties and other characteristics. The tip of the carbon nanotube has a nanometer-scale radius of curvatur...

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