Synthesis of one-dimensional potassium tungsten bronze with excellent near-infrared absorption property

Chongshen Guo, Shu Yin, Lijun Huang, Tsugio Sato

Research output: Contribution to journalArticlepeer-review

89 Citations (Scopus)

Abstract

Potassium tungsten oxide nanofibers were successfully synthesized via a facile hydrothermal reaction route in the presence of sulfate. After reduction under a reductive atmosphere of H2(5 vol %)/N2, the potassium tungsten oxide transformed to potassium tungsten bronze. Because of the lack of free electrons, the potassium tungsten oxide (KxWO 3+x/2) showed no NIR shielding performance; however, the potassium tungsten bronze (KxWO3) showed promising optical characteristics such as high transmittance for visible light, as well as high shielding performance for near-infrared lights, indicating its potential application as a solar filter. Meanwhile, the potassium tungsten bronze (K xWO3) showed strong absorption of near-infrared light and instantaneous conversion of photoenergy to heat.

Original languageEnglish
Pages (from-to)2794-2799
Number of pages6
JournalACS Applied Materials and Interfaces
Volume3
Issue number7
DOIs
Publication statusPublished - 2011 Jul 27

Keywords

  • IR shielding
  • KWO
  • near-infrared absorption
  • tungsten bronze

ASJC Scopus subject areas

  • Materials Science(all)

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