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

A technology of carbon nanotubes and hydrothermal method, applied in the direction of nanotechnology, nanotechnology, nanostructure manufacturing, etc., to achieve the effect of mild reaction conditions, wide application prospects, and simple process

Inactive Publication Date: 2008-09-03
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But so far, using glucose or sucrose as a raw material, the literature and patents of synthesizing carbon nanotubes or rods by hydrothermal reaction have not yet been published.

Method used

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

Examples

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Effect test

Embodiment 1

[0025] Dissolve 1 gram of sucrose in 19 grams of 6mol / L H 2 SO 4 After fully stirring at room temperature to form a 5% sucrose acidic solution, it was transferred to a hydrothermal reaction kettle for hydrothermal reaction at 180°C for 12 hours, then naturally cooled to room temperature, centrifuged and washed repeatedly with deionized water After drying, carbon nanotubes with a diameter of 40-50 nm and a length of 1-2 μm can be obtained.

Embodiment 2

[0027] Dissolve 8 g of sucrose in 12 g of 7 mol / L H 2 SO 4 After fully stirring at room temperature to form a 40% sucrose acidic solution, transfer it to a hydrothermal reaction kettle, react hydrothermally at 150°C for 5 hours, then cool naturally to room temperature, centrifuge and wash repeatedly with deionized water After drying, carbon nanorods with a diameter of 30-50 nm and a length of 1-2 μm can be obtained.

Embodiment 3

[0029] Dissolve 2 grams of sucrose in 18 grams of 3mol / L H 3 PO 4 After fully stirring at room temperature to form a 10% sucrose acidic solution, transfer it to a hydrothermal reaction kettle for a hydrothermal reaction at 220°C for 24 hours, then naturally cool to room temperature, centrifuge and wash repeatedly with deionized water After drying, carbon nanorods with a diameter of 20-50 nm and a length of 0.5-2 μm can be obtained.

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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 2-24 hours, 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. The prepared 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...

Claims

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Application Information

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IPC IPC(8): C01B31/02B82B3/00
Inventor 秦学单忠强原渊袁亚华蒋朋
Owner TIANJIN UNIV
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