Alkali-Assisted, Atmospheric Plasma Production of Titania Nanowire Powders and Arrays

作者：Kumar Vivekanand; Kim Jeong H; Jasinski Jacek B; Clark Ezra L; Sunkara Mahendra K^*

来源：Crystal Growth & Design, 2011, 11(7): 2913-2919.

DOI：10.1021/cg2000624

We report a new ultrafast (reaction time on the scale of a minute) gas-phase method for synthesizing highly crystalline titan ate 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 (similar to 1 day) for synthesis of TiO2 NWs.

• 出版日期2011-7