We have used the simple heating technique for growing TiO2 nanowires. We have changed the thickness of predeposited Au layers on TiAlN substrates, realizing that the thickness of the Au layer influenced the resultant morphology of nanowires. The nanowires were analyzed with X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectroscopy, and photoluminescence spectroscopy (PL). The resultant nanowires consisted of the tetragonal rutile structure of TiO 2. With the nanowire morphology changing with varying the Au layer thickness, we suggest that the associated growth mechanism is a base-growth mode, in which Au played a catalytic role. PL spectra indicated that the TiO2 nanowires exhibited a broad emission band comprising four peaks centered at 3.0, 2.6, 2.3, and 1.5 eV.
|Number of pages||7|
|Journal||Journal of Alloys and Compounds|
|State||Published - Aug 31 2010|
Bibliographical noteFunding Information:
This work was supported by a Korea Research Foundation Grant funded by the Korean Government (MOEHRD) ( KRF-2007-521-D00216 ). The main calculations were performed by the supercomputing resources of the Korea Institute of Science and Technology Information (KISTI).
- Thermal treatment
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry