Nanocarbon separation device and nanocarbon separation method

Patent metadata

Field	Value
Publication number	US-11559769-B2
Application number	US-201816754642-A
Country	US
Kind code	B2
Filing date	Oct 3, 2018
Priority date	Oct 10, 2017
Publication date	Jan 24, 2023
Grant date	Jan 24, 2023

Abstract

A nanocarbon separation device includes a first porous structure configured to hold a solution containing a surfactant, a second porous structure configured to hold a dispersion medium, a holding part provided between the first porous structure and the second porous structure and configured to hold the dispersion liquid containing the nanocarbons and the surfactant and having a smaller content of the surfactant than that of the solution, a separation tank in which the first porous structure, the holding part and the second porous structure are disposed and accommodated in an order of the first porous structure, the holding part and the second porous structure, a first electrode provided on a lower section of the first porous structure, and a second electrode provided on an upper section of the second porous structure.

First claim

The invention claimed is:

1. A nanocarbon separation device comprising:
a first porous structure configured to hold a solution containing a surfactant;
a second porous structure configured to hold a dispersion medium;
a holding part provided between the first porous structure and the second porous structure and configured to hold the dispersion liquid containing the nanocarbons and the surfactant and having a smaller content of the surfactant than that of the solution;
a separation tank in which the first porous structure, the holding part and the second porous structure are disposed and accommodated in an order of the first porous structure, the holding part and the second porous structure;
a first electrode provided on a lower section of the first porous structure; and
a second electrode provided on an upper section of the second porous structure.

2. The nanocarbon separation device according to claim 1 , wherein the first porous structure and the second porous structure are constituted by sponge.

3. The nanocarbon separation device according to claim 1 , wherein the holding part is constituted by a third porous structure.

4. The nanocarbon separation device according to claim 3 , wherein at least one of the first porous structure, the second porous structure and the third porous structure is constituted by a plurality of region disposed in a thickness direction.

5. The nanocarbon separation device according to claim 1 , wherein at least one of the first porous structure and the second porous structure is constituted by a plurality of regions disposed in a thickness direction.

6. The nanocarbon separation device according to claim 1 , wherein the first electrode is provided on any one of an outward side and an inward side of the first porous structure, and the second electrode is provided on any one of an outward side and an inward side of the second porous structure.

7. A nanocarbon separation method comprising:
disposing a first porous structure in which a solution containing a surfactant is held, a holding part in which a dispersion liquid containing nanocarbons and the surfactant and having a smaller content of the surfactant than that of the solution is held, and a second porous structure in which the dispersion medium is held, in an order of the first porous structure, the holding part and the second porous structure;
bringing a first electrode into contact with a lower section of the first porous structure and bringing a second electrode into contact with an upper section of the second porous structure; and
applying a direct current voltage between the first electrode and the second electrode.

8. The nanocarbon separation method according to claim 7 , wherein, in the process of applying, metal type nanocarbons and semiconductor type nanocarbons are separated by moving the metal type nanocarbon contained in the dispersion liquid toward the second electrode while moving the semiconductor type nanocarbons contained in the dispersion liquid toward the first electrode.

9. The nanocarbon separation method according to claim 7 , comprising, after the process of applying, collecting metal type nanocarbons or semiconductor type nanocarbons contained in the dispersion liquid is provided.

10. A nanocarbon separation method comprising:
disposing a first porous structure in which a solution containing a surfactant is held, a holding part in which a dispersion liquid containing nanocarbons and the surfactant and having a smaller content of the surfactant than that of the solution is held, and a second porous structure in which the dispersion medium is held, in an order of the first porous structure, the holding part and the second porous structure;
bringing a first electrode into contact with a lower section of the first porous structure and bringing a second electrode into contact with an upper section of the second porous structure;
holding the dispersion liquid in the holding part; and
applying a direct current voltage between the first electrode and the second electrode.

11. The nanocarbon separation method according to claim 10 , wherein, in the process of applying, metal type nanocarbons and semiconductor type nanocarbons are separated by moving the metal type nanocarbon contained in the dispersion liquid toward the second electrode while moving the semiconductor type nanocarbons contained in the dispersion liquid toward the first electrode.

12. The nanocarbon separation method according to claim 10 , comprising, after the process of applying, collecting metal type nanocarbons or semiconductor type nanocarbons contained in the dispersion liquid is provided.

Assignees

• Nec Corp

Inventors

• Kosaka Mayumi

Classifications

• C01B32/172 Primary

  Sorting · CPC title

• B82Y40/00

  Manufacture or treatment of nanostructures · CPC title

• B82Y30/00

  Nanotechnology for materials or surface science, e.g. nanocomposites · CPC title

• B01D57/02 Primary

  by electrophoresis (treatment of water, waste water, sewage or sludge by electrophoresis C02F1/469; electrophoretic production of compounds or non-metals C25B7/00; investigating or analysing materials by using electrophoresis G01N27/26) · CPC title

• C01B32/174

  Derivatisation; Solubilisation; Dispersion in solvents · CPC title