title: Synthesis of W18O49 nanorod via ammonium tungsten oxide and its interesting optical properties.
abstract: W(18)O(49) nanorods were synthesized by pyrolyzing (NH(4))(x)WO(3+x/2) nanorods precursors, which were prepared by a hydrothermal reaction using sulfate as a structure-directing agent, in a reductive atmosphere of H(2)(5 vol %)/N(2) at 500 °C for 1 h. W(18)O(49) nanorods showed high transmittance in the visible region as well as excellent shielding properties of NIR lights. A simulated experiment revealed that excellent heat insulating performance can be realized by applying a 70% visible light transparent W(18)O(49) coating on a quartz glass. Meanwhile, the W(18)O(49) nanorods also showed strong absorption of NIR light and instantaneous conversion of photoenergy to heat. In a word, W(18)O(49) nanorods hold interesting optical properties and are a promising material in a wide range of applications.
authors.affiliation: Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Sendai, 980-8577, 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: Yunfang
authors.initials: Y
authors.lastname: Huang
authors.forename: Qiang
authors.initials: Q
authors.lastname: Dong
authors.forename: Tsugio
authors.initials: T
authors.lastname: Sato