Preparation of aspect ratio-controlled carbon nanotubes

Don Young Kim, Hyoung Joon Jin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

Commercially, multi-walled carbon nanotubes (MWCNTs) production methods are based on the use of transition metal catalysts such as chemical vapor deposition (CVD). Raw MWCNTs usually contain metal catalysts and other carbon impurities. A common route to eliminate these impurities is an acid treatment. In addition, this route induces cutting of MWCNTs which can control the aspect ratio of MWCNTs. The aspect ratio controlled MWCNTs can use many applications such as the electrode material, biological imaging and sensing, etc. In this study, the aspect ratio of MWCNTs was controlled using an acid treatment with a 3:1 concentrated H2SO4/HNO3 mixture by varying the treatment time. Results show that an acid treatment can control the aspect ratio of MWCNTs. The aspect ratio controlled MWCNTs were observed by TEM and Raman spectra.

Original languageEnglish
Title of host publicationMulti-functional Materials and Structures - International Conference on Multifunctional Materials and Structures
PublisherTrans Tech Publications
Pages1101-1104
Number of pages4
ISBN (Print)0878493786, 9780878493784
DOIs
StatePublished - 2008
EventMulti-functional Materials and Structures - International Conference on Multifunctional Materials and Structures - Hong Kong, P.R., China
Duration: 28 Jul 200831 Jul 2008

Publication series

NameAdvanced Materials Research
Volume47-50 PART 2
ISSN (Print)1022-6680

Conference

ConferenceMulti-functional Materials and Structures - International Conference on Multifunctional Materials and Structures
Country/TerritoryChina
CityHong Kong, P.R.
Period28/07/0831/07/08

Keywords

  • Acid treatment
  • Aspect ratio
  • Carbon nanotubes
  • Chemical vapor deposition
  • Defect healing
  • Multiwalled carbon nanotubes

Fingerprint

Dive into the research topics of 'Preparation of aspect ratio-controlled carbon nanotubes'. Together they form a unique fingerprint.

Cite this