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Purifying method of macroscopic body of carbon nano tube

A carbon nanotube and purification method technology, applied in the direction of carbon nanotubes, nanocarbons, etc., can solve the problems of difficult removal of metal catalysts, affecting the development and application of performance, and achieve simple, fast, low-cost, and widely used processes and methods. Effect

Active Publication Date: 2014-08-13
SUZHOU CREATIVE CARBON NANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, it is difficult to avoid the existence of some metal catalyst particles in the carbon nanotube macroscopic body in the preparation method of the first two, which will inevitably affect its performance and subsequent development and application.
[0003] At present, the purification methods and technologies for carbon nanotube macroscopic bodies mainly focus on the purification of carbon nanotube powders, and there are few reports on the purification methods of carbon nanotube macroscopic bodies other than carbon nanotube powders; moreover, The usual acid soaking purification method can only remove some metal catalysts on the surface of the carbon nanotube macroscopic body, and a large amount of metal catalysts inside it is almost difficult to remove

Method used

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Effect test

Embodiment 1

[0038] H was used with a mass fraction of 2% 2 SO 4 As the electrolyte, graphite is used as the cathode and anode electrodes, the anode electrode 11 is connected to the positive pole of the DC power supply, and the cathode electrode 12 is connected to the negative pole of the DC power supply. In this embodiment, the shape of the anode electrode 11 is flat. The carbon nanotube macroscopic body 20 is directly attached to the flat anode electrode 11, and both sides of the flat anode electrode 11 can be pasted with the carbon nanotube macroscopic body. Completely immerse the flat anode electrode attached to the carbon nanotube macroscopic body in the electrolyte, and the cathode electrode is also immersed in the electrolyte, adjust the DC power supply voltage to 2-4V, adjust the current to 0.2-0.5A, and the electrolysis time is 12-15h. During the electrolytic treatment, the electrolyte is stirred so that the residual metal catalyst in the carbon nanotube macroscopic body is oxid...

Embodiment 2

[0040] H with a mass fraction of 10% 2 SO 4 As the electrolyte, graphite is used as the cathode and anode electrodes, the anode electrode 11 is electrically connected to the positive pole of the DC power supply, and the cathode electrode 12 is electrically connected to the negative pole of the DC power supply. In this embodiment, the shape of the anode electrode 11 is flat. The carbon nanotube macroscopic body 20 is directly attached to the flat anode electrode 11, and both sides of the flat anode electrode 11 can be pasted with the carbon nanotube macroscopic body. Fully immerse the flat anode electrode attached to the carbon nanotube macroscopic body in the electrolyte, and the cathode electrode is also immersed in the electrolyte, adjust the voltage of the DC power supply to 1-3V, adjust the current to 0.1-0.3A, and the electrolysis time for 3-5h. During the electrolytic treatment, the electrolyte is stirred so that the residual metal catalyst in the carbon nanotube macro...

Embodiment 3

[0042] H was used with a mass fraction of 2% 2 SO 4 As the electrolyte, graphite is used as the cathode and anode electrodes. The anode electrode 11 is electrically connected to the positive pole of the DC power supply, and the cathode electrode 12 is electrically connected to the negative pole of the DC power supply. In this embodiment, the shape of the anode electrode 11 is a round rod. The carbon nanotube macroscopic body 20 is placed between two layers of clean dust-free cloth to form a sandwich structure, and one end of the carbon nanotube macroscopic body 20 is closely connected with the rod-shaped positive electrode, and then the whole carbon nanotube macroscopic body is connected to the non-woven fabric. The sandwich structure composed of dust cloth winds the rod-shaped anode 11 layer by layer, and finally wraps it with cable ties. The rod-shaped positive electrode of the carbon nanotube macroscopic body with sandwich structure is completely immersed in the electrolyt...

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Abstract

The invention provides a purifying method of a macroscopic body of a carbon nano tube. The method comprises the following steps: S1, constructing an electrolytic device, wherein the electrolytic device comprises a cathode, an anode and an electrolyte which are located in an electrolytic bath; and S2, attaching the macroscopic body of the carbon nano tube to the anode and electrifying for electrolysis and purification. Compared with the prior art, the macroscopic body of the carbon nano tube is purified by the electrolytic method, so that the problem that metal catalysts inside the macroscopic body of the carbon nano tube are hard to remove for the macroscopic body of the carbon nano tube soaked by a conventional acidic solution, and the macroscopic body of the carbon nano tube is thoroughly purified. The purifying method provided by the invention is simple and convenient in process and method, low in cost, wide in application and suitable for popularization and application on a large scale.

Description

technical field [0001] The invention relates to the field of manufacturing nanomaterials, in particular to a method for purifying carbon nanotube macroscopic bodies. Background technique [0002] The carbon nanotube macroscopic body is a macroscopic material formed by a large number of carbon nanotubes intertwined and connected, and it is an important part of the research field of carbon nanotubes. Carbon nanotube macroscopic body has the characteristics of high strength, high conductivity, light and thin, excellent flexibility and chemical stability, and has made some progress in the application research in the fields of electronic power, energy storage, intelligent sensing, composite materials, aerospace and other fields . In terms of the preparation of carbon nanotube macroscopic bodies, people have successively developed the preparation methods of carbon nanotube solution spin coating and filtration, floating catalytic vapor phase direct growth method, and spinnable car...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02C01B32/17
Inventor 张永毅高鹏李清文金赫华
Owner SUZHOU CREATIVE CARBON NANOTECH
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