Scrolled sheet precursor route to niobium and tantalum oxide nanotubes

Yoji Kobayashi, Hideo Hata, Magda Salama, Thomas E. Mallouk

Research output: Contribution to journalArticlepeer-review

116 Scopus citations


The nanoscroll-to-nanotube thermal transformation was studied for H 4Nb 6O 17·4.4H 2O scrolls, prepared by exfoliation of K 4Nb 6O 17. Thermal dehydration of the scrolls produces Nb 2O 5 nanotubes at 400-450°C. The nontopochemical transformation results in polycrystalline nanotubes; however, significant texturing with respect to the tube axis is observed. Substituting Ta for Nb in the precursor compound led to a lower yield of scrolls, most likely because there is less built-in lattice strain to drive scrolling of the unilamellar colloidal sheets.

Original languageEnglish (US)
Pages (from-to)2142-2145
Number of pages4
JournalNano letters
Issue number7
StatePublished - Jul 1 2007

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics
  • Mechanical Engineering


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