METHOD FOR PURIFYING CARBON NANOTUBES BY USING IONIC LIQUID

Title:

METHOD FOR PURIFYING CARBON NANOTUBES BY USING IONIC LIQUID

Document Type and Number:

WIPO Patent Application WO/2022/005163

Kind Code:

A1

Abstract:

The present invention relates to a method for purifying carbon nanotubes, comprising the steps of: (a) preparing a dispersion solution by dispersing, in an ionic liquid, unpurified carbon nanotubes comprising impurities; (b) emitting ultrasound waves at the dispersion solution; and (c) obtaining, from the ultrasonicated dispersion solution, high-purity carbon nanotubes from which the impurities are separated. The method for purifying carbon nanotubes, according to the present invention, uses the physicochemical properties of an ionic liquid to simply perform high purity purification in mass quantities without compromising the intrinsic properties of carbon nanotubes.

Inventors:

KIM TAE WON (KR)
PARK JAE CHEOL (KR)
LEE JEON RYANG (KR)

Application Number:

PCT/KR2021/008174

Publication Date:

January 06, 2022

Filing Date:

June 29, 2021

Export Citation:

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Assignee:

KOREA INST IND TECH (KR)

International Classes:

C01B32/17; B01J19/10; C01B32/174

Foreign References:

KR20170062892A	2017-06-08
US7781635B1	2010-08-24
KR101542346B1	2015-08-10
JP2005154225A	2005-06-16
JP2005219964A	2005-08-18