Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/68077
標題: Rapid formation of tungsten oxide nanobundles with controllable morphology
作者: Hsieh, Y.T.
Chen, U.S.
Hsueh, S.H.
Huang, M.W.
Shih, H.C.
關鍵字: Tungsten oxide nanobundles
Rapid formation
Controllable morphology
carbon nanotubes
nanowire arrays
growth
nanorods
nanostructures
templates
plasma
tubes
期刊/報告no:: Applied Surface Science, Volume 257, Issue 8, Page(s) 3504-3509.
摘要: Tungsten oxide (W(18)O(49)) nanobundles with controllable morphology were fabricated on Si substrates within 5 min by microwave plasma-enhanced chemical vapor deposition (MPECVD). The crystal structure and chemical composition of these nanobundles were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), and energy-dispersive X-ray spectroscopy (EDS). The results of these characterizations confirmed the formation of W(18)O(49) nanobundles with [0 1 0] as the major growth direction. SEM images showed that the nanobundles were several micrometers long with diameters of 20-500 nm. The morphology of the nanobundles can be controlled by simply adjusting the reaction times to the desired level; nanowires (diameter: 15-30 nm), nanorods (diameter: 40-60 nm), and nanoslabs (thickness: 30 nm) were formed at 1.5, 3, and 4 min, respectively. With an increase in reaction times, the nanobundles steadily increased in dimensions to form nanoslabs. Thus, our results indicated that MPECVD is highly effective and suitable for fabrication of various tungsten oxide nanobundles. (C) 2010 Elsevier B. V. All rights reserved.
URI: http://hdl.handle.net/11455/68077
ISSN: 0169-4332
文章連結: http://dx.doi.org/10.1016/j.apsusc.2010.11.063
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