US 8,715,607 B2 · Method for separating and collecting carbon nanotube, and carbon nanotube

Abstract

Metallic CNTs and semiconducting CNTs are efficiently separated from a CNT mixture of these CNTs, and semiconducting CNTs are separated by structure by using a method that enables separation in high yield in a short time period while conveniently enabling mass processing and automatic processing with inexpensive equipment. Multiple columns charged with gel are connected in series, and excess amounts of a CNT dispersion is passed through the columns to adsorb only the CNTs of a specific structure on the columns. The CNTs are then eluted with an elution to separate CNTs of different structures with high accuracy. The present technique represents a method that conveniently enables mass processing and automatic processing at high yield in a short time period with inexpensive equipment.

Claims7

Dependent claims

A method for separating and collecting a carbon nanotube, comprising:

a step of adsorbing a carbon nanotube having strong gel adsorbability to a gel by adding a carbon nanotube dispersion containing a carbon nanotube to the gel, then
a step of separating a solution containing an unadsorbed carbon nanotube having weak gel adsorbability from the gel by adding a solution to the gel, and then
a step of removing the carbon nanotube adsorbed to the gel by adding an elution solution differing from the solution to the gel after the separation step,
wherein the carbon nanotube dispersion containing the carbon nanotube is added in excess of a carbon nanotube amount adsorbable by the gel.

1 more element

Dependencies are inferred from the claim text.

Method for separating and collecting carbon nanotube, and carbon nanotube

Life of this patent

Method for separating and collecting carbon nanotube, and carbon nanotube

Life of this patent

Abstract

Claims7