Synthesis and characterization of sodium tungsten bronze nanorods for electrochromic smart window applications

Author

Tao Gao ; Jelle, Bjorn Petter ; Gustavsen, Arild

Author_Institution

Dept. of Archit. Design, History & Technol., Norwegian Univ. of Sci. & Technol. (NTNU), Trondheim, Norway

fYear

2013

fDate

5-8 Aug. 2013

Firstpage

1093

Lastpage

1096

Abstract

Single-crystalline sodium tungsten bronze (Na-WO₃) nanorods with typical diameters of 10-200 nm and lengths of several of microns were prepared via hydrothermal synthesis. X-ray diffraction data showed that the as-prepared Na-WO₃ nanorods crystallize in a hexagonal structure (space group P6 / mmm) with unit cell parameters a = 7.3166(8) Å and c = 3.8990(8) Å, and elongate along the <;001> direction. The Na-WO₃ nanorods had a mean chemical composition of Na_0.18WO_3.09·0.5H₂O. The Na-WO₃ nanorods exhibited a typical cathodic coloration related to proton insertion, indicating their potentials in electrochromic smart window applications.

Keywords

X-ray diffraction; colour; electrochromism; lattice constants; nanofabrication; nanorods; sodium compounds; Na_0.18WO_3.09·0.5H₂O; Na_xWO₃; X-ray diffraction; cathodic coloration; chemical composition; crystallization; electrochromic smart window applications; hexagonal structure; hydrothermal synthesis; nanorods; proton insertion; size 10 nm to 200 nm; sodium tungsten bronze; space group; unit cell parameters; Absorption; Buildings; Chemicals; Electrodes; Materials; Tungsten; X-ray diffraction;

fLanguage

English

Publisher

ieee

Conference_Titel

Nanotechnology (IEEE-NANO), 2013 13th IEEE Conference on

Conference_Location

Beijing

ISSN

1944-9399

Print_ISBN

978-1-4799-0675-8

Type

conf

DOI

10.1109/NANO.2013.6720794

Filename

6720794