Purification of carbon nanotubes via selective heating

Patent · 25 June 2019

OSTI ID:1568535

Rogers, John A.; Wilson, William L.; Jin, Sung Hun; Dunham, Simon N.; Xie, Xu; Islam, Ahmad; Du, Frank; Huang, Yonggang; Song, Jizhou

The present invention provides methods for purifying a layer of carbon nanotubes comprising providing a precursor layer of substantially aligned carbon nanotubes supported by a substrate, wherein the precursor layer comprises a mixture of first carbon nanotubes and second carbon nanotubes; selectively heating the first carbon nanotubes; and separating the first carbon nanotubes from the second carbon nanotubes, thereby generating a purified layer of carbon nanotubes. Devices benefiting from enhanced electrical properties enabled by the purified layer of carbon nanotubes are also described.

• Research Organization: Univ. of Illinois, Urbana, IL (United States); Northwestern Univ., Evanston, IL (United States); Univ. of Miami, Miami, FL (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: FG02-91ER45439
• Assignee: The Board of Trustees of the University of Illinois (Urbana, IL); Northwestern University (Evanston, IL); University of Miami (Miami, FL)
• Patent Number(s): 10,333,069
• Application Number: 15/354,951
• OSTI ID: 1568535
• Country of Publication: United States
• Language: English