METHOD FOR SEPARATING CARBON NANOTUBES USING MODIFIED CELLULOSE Russian patent published in 2023 - IPC C01B32/172 B82Y40/00 

FIELD: metallic carbon nanotubes.

SUBSTANCE: invention is related to two variants of a method for separating metallic carbon nanotubes (M-CNTs) from semiconductor carbon nanotubes (S-CNTs) in a mixture of carbon nanotubes (CNTs). According to one embodiment, the method includes the stages of dispersing a mixture of CNTs in a solution to form a CNT dispersion, wherein the CNT dispersion contains sodium deoxycholate (SDC), passing the CNT dispersion through a column filled with nitrocellulose, eluting the S-CNT with a first aqueous solution containing sodium dodecyl sulfate (SDS), and eluting the M-CNTs with a second aqueous solution containing SDC.

EFFECT: use of the proposed method makes it possible to separate fractions of the initial mixture of carbon nanotubes with different structures or chiral angles through the use of modified cellulose to separate carbon nanotubes based on their selective penetration through a separation column filled with modified cellulose.

10 cl, 3 dwg, 1 tbl, 3 ex