Synthesis of one-dimensional hexagonal sodium tungsten oxide and its near-infrared shielding property

Chongshen Guo, Shu Yin, Tsugio Sato

    Research output: Contribution to journalArticlepeer-review

    37 Citations (Scopus)

    Abstract

    Sodium tungstate nanofibers have been successfully synthesized via a facile hydrothermal reaction route in the presence of sulfate. The as-prepared sodium tungstate nanofibers exhibited great homogenity with diameters of 200-300 nm and length of 15-20 μm. The results also suggested that atomic ratio of Na/W and aspect ratio of nanofibers can be easily adjusted by changing the concentration of Na2SO4 in the starting materials. After reduction under an atmosphere of H2 (5 vol.%)/N2, the sodium tungstate transformed to sodium tungsten bronze without loss of one-dimensional nanostructure. The sodium tungstate (MxWO3+x/2) showed no NIR shielding performance, however, the sodium tungsten bronze (M xWO3) with high content of sodium showed promising optical characteristics such as high transmittance for visible lights as well as high shielding performance for near-infrared lights, indicating its potential application as solar filter. It was observed that NIR shielding performance increased with increment of Na/W atomic ratio while the transparency in visible light region was almost the same.

    Original languageEnglish
    Pages (from-to)413-416
    Number of pages4
    JournalNanoscience and Nanotechnology Letters
    Volume3
    Issue number3
    DOIs
    Publication statusPublished - 2011 Jun 1

    Keywords

    • Hydrothermal Reaction
    • Nanofibers
    • Near-Infrared Shielding Property
    • Sodium Tungsten Oxide

    ASJC Scopus subject areas

    • Materials Science(all)

    Fingerprint

    Dive into the research topics of 'Synthesis of one-dimensional hexagonal sodium tungsten oxide and its near-infrared shielding property'. Together they form a unique fingerprint.

    Cite this