Selective self-assembly of single walled carbon nanotubes in long steel tubing for chemical separations

Mahesh Karwa, Zafar Iqbal, Somenath Mitra

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

This paper reports the scaled-up self-assembly of single walled carbon nanotubes (SWCNTs) on the inside wall of a long silica-lined steel capillary tubing for applications such as chemical processing and separations. A unique one step self-assembly process has been developed and the effect of the substrate on the morphology of the CVD growth has been studied. With the aerosol spray of an ethanolic solution consisting of dissolved cobalt and molybdenum as metal catalysts and co-catalysts respectively, the catalyst was generated and activated in situ inside the interior of the tubing, in parallel with the synthesis of SWCNTs, thus eliminating the need to coat the substrate with the catalyst prior to the synthesis of the nanotubes. The presence of a silica layer on the steel tubing was found to be critical for the formation of SWCNTs. Gas chromatographic separation of aromatic compounds is demonstrated on the capillary tube.

Original languageEnglish (US)
Pages (from-to)2890-2895
Number of pages6
JournalJournal of Materials Chemistry
Volume16
Issue number28
DOIs
StatePublished - Jul 14 2006

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Chemistry

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