Method for separating long carbon nanotubes from short carbon nanotubes
The invention provides a method for separating a long carbon nanotube and a short carbon nanotube, which comprises the following steps: (1) preparing a composite dispersion liquid from a carbon nanotube raw material in a container, the composite dispersion liquid comprising a first surfactant, a second surfactant, the carbon nanotube raw material and a solvent; wherein the first surfactant is different from the second surfactant; and (2) standing the composite dispersion liquid, so that the long carbon nanotubes are agglomerated and precipitated to the bottom of the container, and the short carbon nanotubes are suspended in the supernate. The method is convenient, efficient and low in cost. The method does not depend on a gel medium and liquid chromatography equipment, and the yield of the long carbon nanotubes can be increased by enlarging the volume of the container. The method provided by the invention is also suitable for carbon nanotube raw materials with different diameters grown by different methods, and has universality..
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Patent| Erscheinungsjahr: |
2023 |
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| Erschienen: |
2023 |
| Enthalten in: |
Europäisches Patentamt - (2023) vom: 13. Okt. Zur Gesamtaufnahme - year:2023 |
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| Sprache: |
Englisch |
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| Beteiligte Personen: |
WEI XIAOJUN [VerfasserIn] |
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| Links: |
Volltext [kostenfrei] |
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| Themen: |
Sonstige Themen: |
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| Anmerkungen: |
Source: www.epo.org (no modifications made), First posted: 2023-10-13, Last update posted on www.tib.eu: 2024-03-13, Last updated: 2024-03-22 |
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| Patentnummer: |
CN116873905 |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
EPA000738107 |
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| 245 | 1 | 0 | |a Method for separating long carbon nanotubes from short carbon nanotubes |
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| 520 | |a The invention provides a method for separating a long carbon nanotube and a short carbon nanotube, which comprises the following steps: (1) preparing a composite dispersion liquid from a carbon nanotube raw material in a container, the composite dispersion liquid comprising a first surfactant, a second surfactant, the carbon nanotube raw material and a solvent; wherein the first surfactant is different from the second surfactant; and (2) standing the composite dispersion liquid, so that the long carbon nanotubes are agglomerated and precipitated to the bottom of the container, and the short carbon nanotubes are suspended in the supernate. The method is convenient, efficient and low in cost. The method does not depend on a gel medium and liquid chromatography equipment, and the yield of the long carbon nanotubes can be increased by enlarging the volume of the container. The method provided by the invention is also suitable for carbon nanotube raw materials with different diameters grown by different methods, and has universality. | ||
| 650 | 4 | |a C01B: Non-metallic elements; compounds thereof (fermentation or enzyme-using processes for the preparation of elements or inorganic compounds except carbon dioxide c12p0003000000; production of non-metallic elements or inorganic compounds by electrolysis or electrophoresis c25b) | |
| 650 | 4 | |a tec | |
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| 650 | 4 | |a B82Y: Specific uses or applications of nanostructures; measurement or analysis of nanostructures; manufacture or treatment of nanostructures | |
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