Alkali-assisted, atmospheric plasma production of Titania nanowire powders and arrays

Vivekanand Kumar, Jeong H. Kim, Jacek B. Jasinski, Ezra L. Clark, Mahendra K. Sunkara

Research output: Contribution to journalArticlepeer-review

29 Scopus citations


We report a new ultrafast (reaction time on the scale of a minute) gas-phase method for synthesizing highly crystalline titanate phase nanowires (NWs) using oxidation of either Ti metal (foils or powders) or spherical TiO2 powders with an atmospheric pressure microwave plasma. In this method, alkali metal compounds of Li, Na, and K are shown to form molten alloys of alkali metal-Ti-O during plasma exposure. Bulk nucleation and subsequent basal growth of the resulting nuclei from the molten alkali metal-Ti-O resulted in the respective titanate NWs. The current state-of-the-art methods involve long reaction time scales (∼1 day) for synthesis of TiO2 NWs.

Original languageEnglish (US)
Pages (from-to)2913-2919
Number of pages7
JournalCrystal Growth and Design
Issue number7
StatePublished - Jul 6 2011

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics


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