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    • 7. 发明授权
    • Isolation of single-walled carbon nanotubes from double and multi-walled carbon nanotubes
    • 从双层和多壁碳纳米管分离单壁碳纳米管
    • US08465647B2
    • 2013-06-18
    • US12636426
    • 2009-12-11
    • Ageeth A. BolGeorge S. Tulevski
    • Ageeth A. BolGeorge S. Tulevski
    • B01D11/00B01D17/038C01B31/02
    • B01D21/262B01D17/0217B82Y30/00B82Y40/00C01B32/17C01B32/172C01B2202/02Y10S977/845
    • A method and system are disclosed for separating single-walled carbon nanotubes from double and multi-walled carbon nanotubes by using the difference in the buoyant density of Single-Walled versus Multi-Walled carbon nanotubes. In one embodiment, the method comprises providing a vessel with first and second solutions. The first solution comprises a quantity of carbon nanotubes, including single-walled carbon nanotubes and double and multi-walled carbon nanotubes. The single walled nanotubes have a first density, the double and multi-walled nanotubes having a second density. The second solution in the vessel has a third density between said first and second densities. The vessel is centrifuged to form first and second layers in the vessel, with the second solution between said first and second layers. The single-walled carbon nanotubes are predominantly in the first layer, and the second and multi-walled carbon nanotubes are predominantly in the second layer.
    • 公开了通过使用单壁碳纳米管与多壁碳纳米管的浮力密度的差异来从双层和多壁碳纳米管分离单壁碳纳米管的方法和系统。 在一个实施例中,该方法包括向船舶提供第一和第二解决方案。 第一种解决方案包括一定量的碳纳米管,包括单壁碳纳米管和双层和多壁碳纳米管。 单壁纳米管具有第一密度,双壁和多壁纳米管具有第二密度。 容器中的第二溶液在所述第一和第二密度之间具有第三密度。 将容器离心以在容器中形成第一和第二层,第二溶液在所述第一和第二层之间。 单壁碳纳米管主要位于第一层中,第二层和多壁碳纳米管主要位于第二层。