Synthesis of vertically aligned carbon nanotube films on macroporous alumina substrates

Wanliang Mi, Jerry Lin, Yongdan Li, Baoquan Zhang

Research output: Contribution to journalArticle

14 Scopus citations

Abstract

This communication reports experimental efforts to grow vertically aligned carbon nanotube (CNT) films on macroporous α-Al2O3 disks of 20 mm in diameter. Vertically aligned CNT films could not be obtained by the methods of preloading catalyst. About 10 μm thick vertically aligned CNT films were obtained on the macroporous alumina disks by chemical vapor deposition with the alumina substrates exposed first to a flow of ferrocene in NH3 then to a flow of acetylene and NH3 for about 10 min at substrate temperature of 800 °C. The CNTs are about 100 nm in diameter and have a bamboo-type structure, with pore openings of about 4.2 nm in diameter. Possible formation mechanism of vertical aligned CNTs on the disk was also discussed in this communication.

Original languageEnglish (US)
Pages (from-to)185-189
Number of pages5
JournalMicroporous and Mesoporous Materials
Volume81
Issue number1-3
DOIs
StatePublished - Jun 6 2005

Keywords

  • Carbon nanotubes
  • Formation mechanism
  • Macroporous substrate
  • Vertically oriented film

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials

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