In this paper, a systematic study of large-scale production of highly crystalline W 18O 49 nanoneedles with high aspect ratios using a simple tungsten metal reacting with water at 800-1000°C has been described. By altering the W source and other experimental conditions, we have generated W 18O 49 crystals with diverse morphologies, and needles with desired dimensions are achieved. The quality nanoneedles provide ideal samples for further property investigations. Possible growth mechanisms are discussed.
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Surfaces, Coatings and Films
- Materials Chemistry