Growth, structural, Raman, and photoluminescence properties of rutile TiO2 nanowires synthesized by the simple thermal treatment

Hyoun Woo Kim; Hyo Sung Kim; Han Gil Na; Ju Chan Yang; Doo Young Kim

doi:10.1016/j.jallcom.2010.05.094

Growth, structural, Raman, and photoluminescence properties of rutile TiO₂ nanowires synthesized by the simple thermal treatment

Hyoun Woo Kim, Hyo Sung Kim, Han Gil Na, Ju Chan Yang, Doo Young Kim

Research output: Contribution to journal › Article › peer-review

30 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	217-223
Number of pages	7
Journal	Journal of Alloys and Compounds
Volume	504
Issue number	1
DOIs	https://doi.org/10.1016/j.jallcom.2010.05.094
State	Published - Aug 31 2010

Bibliographical note

Funding 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).

Keywords

Nanowires
Photoluminescence
Raman
Thermal treatment
TiO

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/j.jallcom.2010.05.094

Cite this

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title = "Growth, structural, Raman, and photoluminescence properties of rutile TiO2 nanowires synthesized by the simple thermal treatment",

abstract = "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.",

keywords = "Nanowires, Photoluminescence, Raman, Thermal treatment, TiO",

author = "Kim, {Hyoun Woo} and Kim, {Hyo Sung} and Na, {Han Gil} and Yang, {Ju Chan} and Kim, {Doo Young}",

note = "Funding 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). ",

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AU - Kim, Hyoun Woo

AU - Kim, Hyo Sung

AU - Na, Han Gil

AU - Yang, Ju Chan

AU - Kim, Doo Young

N1 - Funding 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).

PY - 2010/8/31

Y1 - 2010/8/31

N2 - 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.

AB - 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.

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KW - Photoluminescence

KW - Raman

KW - Thermal treatment

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