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Treatment method for nanometer carbon material
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A nano carbon material and processing method technology, applied in the field of nano materials, can solve the problems of large amount of oxidant, long reaction time, unsuitable for mass production, etc., and achieve the effect of less amount of oxidant, short reaction time and good purification.
Active Publication Date: 2011-08-17
CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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Problems solved by technology
However, this purification method uses a large amount of oxidant and a long reaction time during the treatment of carbon nanotubes, which is not suitable for mass production.
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Embodiment 1
[0041] Put 1g of carbon nanotubes on the SiO of the glass liner 2 In the sand core;
[0042] In the polytetrafluoro liner of autoclave, drip 10ml mass concentration and be the nitric acid of 67%, then the glass lining tube that carbon nanotube is housed is placed in the polytetrafluoro liner of autoclave, seal;
[0043] Place the sealed autoclave in an oven, heat, and react at 120°C for 5 hours;
[0044] After the reaction was completed, cool down at room temperature, then take out the glass liner and wash it with water and ethanol, respectively.
[0045] The oxidation time curve of the carbon nanotubes treated in this embodiment is as follows: figure 1 shown.
Embodiment 2
[0047] Put 1g of carbon nanotubes on the SiO of the glass liner 2 In the sand core;
[0048] In the polytetrafluoro liner of autoclave, drip 10ml mass concentration and be the nitric acid of 67%, then the glass lining tube that carbon nanotube is housed is placed in the polytetrafluoro liner of autoclave, seal;
[0049] Place the sealed autoclave in an oven, heat, and react at 160°C for 5 hours;
[0050] After the reaction was completed, cool down at room temperature, then take out the glass liner and wash it with water and ethanol, respectively.
[0051] The oxidation time curve of the carbon nanotubes treated in this embodiment is as follows: figure 2 shown.
Embodiment 3
[0053] Put 1g of carbon nanotubes on the SiO of the glass liner 2 In the sand core;
[0054] In the polytetrafluoro liner of autoclave, drop 0.5ml nitric acid, then the glass lining tube that carbon nanotube is housed is placed in the polytetrafluoro liner of autoclave, seal;
[0055] Place the sealed autoclave in an oven, heat, and react at 200°C for 5 hours;
[0056] After the reaction was completed, cool down at room temperature, then take out the glass liner and wash it with water and ethanol, respectively.
[0057] The oxidation time curve of the carbon nanotubes treated in this embodiment is as follows: image 3 shown.
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Abstract
The invention discloses a treatment method for a nanometer carbon material, which includes the reaction of the nanometer carbon material and gaseous oxidant in a closed container at the temperature of 120-200 DEG C, and the gaseous oxidant is hydrochloric acid and / or nitric acid. In the method, the method of the reaction of the gaseous oxidant and the nanometer carbon material is adopted; as existing in a type of gas molecules, the oxidant has higher oxidizability and can fully and rapidly react with impurities on the surface of the nanometer carbon material; and therefore, high-efficient treatment on the nanometer carbon material can be realized and the purpose of purifying the nanometer carbon material can be achieved. Compared with the prior art in which the nanometer carbon material and the oxidant react in liquid phase, the treatment method provided by the invention has the advantage as follows: the suffusion area of the gaseous oxidant adopted in the method is quite larger than that of liquid oxidant, thus being beneficial to the reaction of the nanometer carbon material and the gaseous oxidant and accelerating the purification of the nanometer carbon material. Therefore, the treatment method for the nanometer carbon material can well purify the nanometer carbon material, the usage amount of the oxidant is little, and the reaction time is short.
Description
technical field [0001] The invention relates to the technical field of nanometer materials, and more specifically, relates to a method for processing nanometer carbon materials. Background technique [0002] Carbon nanomaterials refer to carbon materials with at least one dimension of the dispersed phase smaller than 100nm. Including carbon nanotubes, carbon nanofibers, mesoporous carbon and graphene, etc. As an important part of nano-carbon materials, carbon nanotubes (CNTs) are one-dimensional nano-carbon materials with excellent physical and chemical properties, such as low density, high modulus, high strength, good electrical conductivity, etc. Research and application areas are widely concerned. According to the number of layers of carbon atoms in the tube wall of carbon nanotubes, they can be divided into single-walled carbon nanotubes (SWNT) and multi-walled carbon nanotubes (MWNT). tube (SWNT) set. [0003] In the preparation process of carbon nanotubes (CNTs), a...
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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02
Inventor 赵凤玉于彦存明军
Owner CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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