Purification device and method for carbon nanotube purification

A purification device and technology of carbon nanotubes, applied in the direction of carbon nanotubes, nanocarbons, nanotechnology, etc., can solve the problems of unsuitability for large-scale production, high cost of complexing agents, complex processes, etc., and achieve rapid and thorough catalyst Ease of mass production, simple operation and controllable effect

Active Publication Date: 2019-04-02
SUZHOU FIRST ELEMENT NANO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method requires high-temperature graphitization, high energy consumption, solvents, dispersants, etc., and subsequent processing is complicated
(CN10746745A) of Japan's Sony Corporation Kajiura Shangzhi etc. (CN10746745A) adopts the chemical substance that can be complexed with metal catalysts, forms complexes such as aminopolycarboxylic acid etc., then removes complexes by centrifugation and other means to achieve the effect of purification, this method does not It will cause damage to carbon nanotubes, but the process is complicated and the cost of complexing agent is high, so it is not suitable for large-scale production

Method used

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  • Purification device and method for carbon nanotube purification
  • Purification device and method for carbon nanotube purification
  • Purification device and method for carbon nanotube purification

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Embodiment 1: the purification method of the carbon nanotube of the present embodiment, its steps are as follows:

[0052] First, fill the carbon nanotubes that need to be purified into the filter bag in the cathode chamber, then insert the anode electrode into the carbon nanotubes, follow the instructions figure 1 Connect the rest of the device; connect the entire device circuit, turn on the circulation pump, pump 2% sulfuric acid solution from the valve port of the second three-way valve a to fill the entire circuit, and rotate the second three-way valve a to connect the entire circuit , turn on the power supply of the oxidation tank, adjust the voltage to 2-4V, adjust the current to 0.5-0.8A, and carry out ion exchange while oxidizing; after 30 minutes, a small amount of electrolyte is taken from the valve port of the first three-way valve b from time to time, and detected For the metal ions in it, when no metal ions are detected, disconnect the power supply of the o...

Embodiment 2

[0054] Embodiment 2: the purification method of the carbon nanotube of the present embodiment, its steps are as follows:

[0055] First, fill the required purified carbon nanotubes into the filter bag in the cathode compartment, then insert the anode electrode into the carbon nanotubes, follow the instructions figure 1 Connect the rest of the device; connect the entire device circuit, turn on the circulation pump, pump 5% sulfuric acid solution from the second three-way valve a valve to fill the whole circuit, rotate the second three-way valve a valve, and connect the whole circuit , turn on the power supply of the oxidation tank, adjust the voltage to 1-3V, adjust the current to 0.3-0.5A, and carry out ion exchange while oxidizing; after 30 minutes, a small amount of electrolyte is taken from the valve port of the first three-way valve b from time to time, and the electrolyte is detected. When no metal ions are detected, disconnect the power supply of the oxidation pool, rota...

Embodiment 3

[0057] Embodiment 3: the purification method of the carbon nanotube of the present embodiment, its steps are as follows:

[0058] First, fill the required purified carbon nanotubes into the filter bag in the cathode compartment, then insert the anode electrode into the carbon nanotubes, follow the instructions figure 1 Connect the rest of the device; connect the entire device circuit, turn on the circulation pump, pump 10% sulfuric acid solution from the second three-way valve a valve port to fill the entire circuit, turn the a valve to connect the entire circuit, and connect the oxidation pool Power supply, the voltage is adjusted to 2-4V, the current is adjusted to 0.2-0.6A, and ion exchange is performed while oxidizing; after 30 minutes, a small amount of electrolyte is taken from the valve port of the first three-way valve b from time to time, and the metal ions in it are detected. When no metal ions are detected, disconnect the power supply of the oxidation pool, rotate t...

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Abstract

The invention provides a purification device for purifying a carbon nano tube. The purification device comprises an oxidation pond, a cation exchange column and a power supply, wherein a cathode bin of the oxidation pond is connected with a negative electrode of the power supply; a filter layer for loading the carbon nano tube to be purified is arranged in the cathode bin; an anode connected with a positive electrode of the power supply is also arranged in the cathode bin; the oxidation pond and the cation exchange column are communicated for circulation through a circulating pump; the cathode bin and the whole circulating pipeline are injected with electrolytes. A purification method comprises the following steps: (1), filling the cathode bin with carbon nano tube powder, adding the electrolytes, and electrifying for oxidation treatment; (2), pumping the electrolytes into the cation exchange column from the oxidation pond to filter cations, making the electrolytes flow back to the oxidation pond, and performing oxidation and cation exchange simultaneously. The method purifies the carbon nano tube powder in a manner of simultaneously performing anode oxidation and ion exchange, and is low in cost, high in efficiency, simple in process, thorough in purification, and suitable for batch production.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, and relates to a carbon nanotube purification device and a method thereof, in particular to a simple and efficient purification method for carbon nanotube powder. Background technique [0002] Carbon nanotubes have attracted people's attention due to their unique structural characteristics, singular physical and chemical properties and potential application value in the future high-tech fields. Electronic devices, catalyst supports, electrochemical materials, composite materials and many other fields have broad application prospects. [0003] The existing methods for preparing carbon nanotubes mainly include arc discharge method, laser etching method, chemical vapor deposition method, solid phase pyrolysis method, flame synthesis method, glow discharge method and polymerization reaction synthesis method. In many carbon nanotube preparation processes, except for some direct curre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/17B82Y40/00
CPCB82Y40/00
Inventor 王金娥高玉忠董明
Owner SUZHOU FIRST ELEMENT NANO TECH
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