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Synthesis of Nanostructed Tungsten Oxide Thin Films
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Materials Chemistry.
Dept of Applied Science.
Luna Innovations Nano Works Division.
Dept of biochemistry and organic chemistry.
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2008 (English)In: Crystal Growth & Design, ISSN 1528-7483, Vol. 8, no 10, 3750-3753 p.Article in journal (Refereed) Published
Abstract [en]

A facile and inexpensive method to produce thin films of nanostructured tungsten oxide is described. A nanocrystalline tungstite (WO3·H2O) film is spontaneously formed when a tungsten substrate is immersed in nitric acid at elevated temperatures. The resulting thin film is composed of plate-like tungstite crystals with edges preferentially directed out from the substrate surface. The tungstite can easily be transformed into WO3 by annealing. Patterned WO3·H2O/W structures can be obtained by a combination of lithographic techniques and etching. In this study, the effect of exposure time, acid concentration, and temperature on the microstructure of the films has been investigated. The potential of this inexpensive synthesis method to produce large-area coatings of nanostructured tungsten oxide as well as patterned films makes it interesting for several different applications, such as batteries, gas sensors, and photocatalysts.

Place, publisher, year, edition, pages
2008. Vol. 8, no 10, 3750-3753 p.
National Category
Other Basic Medicine
URN: urn:nbn:se:uu:diva-87347DOI: 10.1021/cg800383cISI: 000259672900048OAI: oai:DiVA.org:uu-87347DiVA: diva2:37541
Available from: 2008-11-17 Created: 2008-10-07 Last updated: 2009-08-27Bibliographically approved

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