抄録
Sodium and potassium tungstate (MxWO3+x/2: M=Na, K) nanofibers have been successfully synthesized via a facile hydrothermal reaction route in the presence of sulfate. By calcination of hydrothermal reaction products under a reductive atmosphere of H2(5vol.%)/N2, the tungstates transformed to tungsten bronze (MxWO3) without loss of one-dimensional nanostructure. Both of amorphous sodium and potassium tungstates showed no NIR shielding performance, however, the sodium and potassium tungsten bronze showed promising optical characteristics as solar filter which can realize high transmittance for visible lights as well as high shielding performance for near-infrared lights.
