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Synthesis of zirconia (ZrO2) nanowires via chemical vapor deposition

Monoclinic zirconia nanowires were synthesized by chemical vapor deposition using ZrCl4 powder as a starting material at 1200°C and 760Torr. Graphite was employed as a substrate, and an Au thin film was pre-deposited on the graphite as a catalyst. The zirconia nanostructure morphology was observed t...

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Bibliographic Details
Published in:Journal of crystal growth 2017-02, Vol.459, p.198-202
Main Authors: Baek, M.K., Park, S.J., Choi, D.J.
Format: Article
Language:English
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Summary:Monoclinic zirconia nanowires were synthesized by chemical vapor deposition using ZrCl4 powder as a starting material at 1200°C and 760Torr. Graphite was employed as a substrate, and an Au thin film was pre-deposited on the graphite as a catalyst. The zirconia nanostructure morphology was observed through scanning electron microscopy and transmission electron microscopy. Based on X-ray diffraction, selected area electron diffraction, and Raman spectroscopy data, the resulting crystal structure was found to be single crystalline monoclinic zirconia. The homogeneous distributions of Zr, O and Au were studied by scanning transmission electron microscopy with energy dispersive X-ray spectroscopy mapping, and there was no metal droplet at the nanowire tips despite the use of an Au metal catalyst. This result is apart from that of conventional metal catalyzed nanowires. •Zirconia nanowires were grown via chemical vapor deposition.•Synthesized zirconia nanowires are single-crystalline and monoclinic structure.•There was no metal droplet at the nanowire tips despite the use of an Au metal catalyst.•Growth mode of the nanowires are suggested.•One-dimensional nanostructures of single crystalline zirconia synthesized through CVD have not seen extensive study.
ISSN:0022-0248
1873-5002
DOI:10.1016/j.jcrysgro.2016.12.033