title: Synthesis of one-dimensional potassium tungsten bronze with excellent near-infrared absorption property.
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 H(2)(5 vol %)/N(2), the potassium tungsten oxide transformed to potassium tungsten bronze. Because of the lack of free electrons, the potassium tungsten oxide (K(x)WO(3+x/2)) showed no NIR shielding performance; however, the potassium tungsten bronze (K(x)WO(3)) 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(x)WO(3)) showed strong absorption of near-infrared light and instantaneous conversion of photoenergy to heat.
authors.affiliation: Institute of Multidisciplinary Research for Advanced Materials, Tohoku University , 2-1-1 Katahira, Aoba-ku, Sendai, Japan. bigguop@mail.tagen.tohoku.ac.jp
authors.forename: Chongshen
authors.initials: C
authors.lastname: Guo
authors.forename: Shu
authors.initials: S
authors.lastname: Yin
authors.forename: Lijun
authors.initials: L
authors.lastname: Huang
authors.forename: Tsugio
authors.initials: T
authors.lastname: Sato