Fabrication and photoluminescence of rutile-TiO2 nanorods

Lei Miao, Sakae Tanemura, Shoichi Toh, Kenji Kaneko, Masaki Tanemura

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Densely assembled single-phase rutile-TiO2 nanorods with diameters of 150-200 nm and lengths of 2-7 μm have been successfully synthesized for the first time by a heating-sol-gel template method. It was found that the heating process of TiO2 sol was beneficial to the single-phase formation of rutile-TiO2 nanorods. Transmission electron microscopic observations reveal that these rutile-TiO2 nanorods are the aggregates of nanocrystallites grown preferentially to the [110] axis with diameters of 10-30 nm. Selected area electron diffraction and energy dispersive X-ray spectroscopy measurements confirm that the obtained nanorods are rutile-TiO2 nanorods with good compositional uniformity and a relatively distinct crystallite shape over the entire length. The photoluminescence result shows a broad band confined in the wavelength range of 400-600 nm. This broad band is thought to originate from bound excitations emission due to the trapping of free excitons by TiO6 octahedra near defects which are possibly oxygen vacancies and/or the color center of Al 3+ impurities.

Original languageEnglish
Pages (from-to)7342-7345
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume43
Issue number10
DOIs
Publication statusPublished - Oct 1 2004

Fingerprint

Nanorods
rutile
nanorods
Photoluminescence
photoluminescence
Fabrication
fabrication
broadband
Color centers
Nanocrystallites
heating
Industrial heating
Oxygen vacancies
Sols
color centers
Electron diffraction
Excitons
Sol-gels
templates
electron diffraction

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Fabrication and photoluminescence of rutile-TiO2 nanorods. / Miao, Lei; Tanemura, Sakae; Toh, Shoichi; Kaneko, Kenji; Tanemura, Masaki.

In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 43, No. 10, 01.10.2004, p. 7342-7345.

Research output: Contribution to journalArticle

Miao, Lei ; Tanemura, Sakae ; Toh, Shoichi ; Kaneko, Kenji ; Tanemura, Masaki. / Fabrication and photoluminescence of rutile-TiO2 nanorods. In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers. 2004 ; Vol. 43, No. 10. pp. 7342-7345.
@article{b6a4fcb188534dc49d3e3e39820dab97,
title = "Fabrication and photoluminescence of rutile-TiO2 nanorods",
abstract = "Densely assembled single-phase rutile-TiO2 nanorods with diameters of 150-200 nm and lengths of 2-7 μm have been successfully synthesized for the first time by a heating-sol-gel template method. It was found that the heating process of TiO2 sol was beneficial to the single-phase formation of rutile-TiO2 nanorods. Transmission electron microscopic observations reveal that these rutile-TiO2 nanorods are the aggregates of nanocrystallites grown preferentially to the [110] axis with diameters of 10-30 nm. Selected area electron diffraction and energy dispersive X-ray spectroscopy measurements confirm that the obtained nanorods are rutile-TiO2 nanorods with good compositional uniformity and a relatively distinct crystallite shape over the entire length. The photoluminescence result shows a broad band confined in the wavelength range of 400-600 nm. This broad band is thought to originate from bound excitations emission due to the trapping of free excitons by TiO6 octahedra near defects which are possibly oxygen vacancies and/or the color center of Al 3+ impurities.",
author = "Lei Miao and Sakae Tanemura and Shoichi Toh and Kenji Kaneko and Masaki Tanemura",
year = "2004",
month = "10",
day = "1",
doi = "10.1143/JJAP.43.7342",
language = "English",
volume = "43",
pages = "7342--7345",
journal = "Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes",
issn = "0021-4922",
publisher = "Institute of Physics",
number = "10",

}

TY - JOUR

T1 - Fabrication and photoluminescence of rutile-TiO2 nanorods

AU - Miao, Lei

AU - Tanemura, Sakae

AU - Toh, Shoichi

AU - Kaneko, Kenji

AU - Tanemura, Masaki

PY - 2004/10/1

Y1 - 2004/10/1

N2 - Densely assembled single-phase rutile-TiO2 nanorods with diameters of 150-200 nm and lengths of 2-7 μm have been successfully synthesized for the first time by a heating-sol-gel template method. It was found that the heating process of TiO2 sol was beneficial to the single-phase formation of rutile-TiO2 nanorods. Transmission electron microscopic observations reveal that these rutile-TiO2 nanorods are the aggregates of nanocrystallites grown preferentially to the [110] axis with diameters of 10-30 nm. Selected area electron diffraction and energy dispersive X-ray spectroscopy measurements confirm that the obtained nanorods are rutile-TiO2 nanorods with good compositional uniformity and a relatively distinct crystallite shape over the entire length. The photoluminescence result shows a broad band confined in the wavelength range of 400-600 nm. This broad band is thought to originate from bound excitations emission due to the trapping of free excitons by TiO6 octahedra near defects which are possibly oxygen vacancies and/or the color center of Al 3+ impurities.

AB - Densely assembled single-phase rutile-TiO2 nanorods with diameters of 150-200 nm and lengths of 2-7 μm have been successfully synthesized for the first time by a heating-sol-gel template method. It was found that the heating process of TiO2 sol was beneficial to the single-phase formation of rutile-TiO2 nanorods. Transmission electron microscopic observations reveal that these rutile-TiO2 nanorods are the aggregates of nanocrystallites grown preferentially to the [110] axis with diameters of 10-30 nm. Selected area electron diffraction and energy dispersive X-ray spectroscopy measurements confirm that the obtained nanorods are rutile-TiO2 nanorods with good compositional uniformity and a relatively distinct crystallite shape over the entire length. The photoluminescence result shows a broad band confined in the wavelength range of 400-600 nm. This broad band is thought to originate from bound excitations emission due to the trapping of free excitons by TiO6 octahedra near defects which are possibly oxygen vacancies and/or the color center of Al 3+ impurities.

UR - http://www.scopus.com/inward/record.url?scp=10844220792&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=10844220792&partnerID=8YFLogxK

U2 - 10.1143/JJAP.43.7342

DO - 10.1143/JJAP.43.7342

M3 - Article

VL - 43

SP - 7342

EP - 7345

JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

SN - 0021-4922

IS - 10

ER -