American Chemical Society
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Fabrication and Properties of a Branched (NH4)xWO3 Nanowire Array Film and a Porous WO3 Nanorod Array Film

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journal contribution
posted on 2015-02-18, 00:00 authored by Ya Liu, Liang Zhao, Jinzhan Su, Mingtao Li, Liejin Guo
We describe the successful fabrication of a three-dimensional branched (NH4)xWO3 nanowire array film on fluorine-doped tin oxide coated glass by a facile one-step hydrothermal method. The porous WO3 nanorod array film formed after heat treatment and recrystallization. Specifically, the branched (NH4)xWO3 nanowire array film has very thin nanowires that were about 10 nm in diameter. The results of an optical and photoelectrochemical test show that the branched (NH4)xWO3 nanowire array film could be used as a near-infrared shielder, while the porous WO3 nanorod array film can be used as a photoanode for water splitting. Moreover, the morphology, structure, and composition of the as-prepared films are revealed, and the related changes caused by heat treatment are discussed in detail.