Gas-phase synthesis of nitrogen-doped TiO{sub 2} nanorods by microwave plasma torch at atmospheric pressure

Journal Article · Tue Nov 15 00:00:00 EST 2005 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.2135773· OSTI ID:20782367

Hong, Yong Cheol; Kim, Jong Hun; Bang, Chan Uk; Uhm, Han Sup ^[1]

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1. Department of Molecular Science and Technology, Ajou University, San 5, Wonchon-Dong, Youngtong-Gu, Suwon 443-749 (Korea, Republic of)

Nitrogen (N)-doped titanium dioxide (TiO{sub 2}) nanorods were directly synthesized via decomposition of gas-phase titanium tetrachloride (TiCl{sub 4}) by an atmospheric microwave plasma torch. X-ray diffraction, field-emission scanning electron microscope, field-emission transmission electron microscope, and electron-energy-loss spectroscopy (EELS) have been employed to investigate fraction of the anatase and rutile phases, diameter and length, and chemical composition of the nanorods, respectively. The diameters of the nanorods are approximately 30-80 nm and the length is several micrometers. EELS data show that incorporation of N into the O site of TiO{sub 2} nanorods was enhanced in N{sub 2} gas by the microwave plasma torch. Also, a growth model of the rods was proposed on the basis of vapor-liquid-solid mechanism.

• OSTI ID: 20782367
• Journal Information: Physics of Plasmas, Vol. 12, Issue 11; Other Information: DOI: 10.1063/1.2135773; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
36 MATERIALS SCIENCE
CHEMICAL COMPOSITION
DOPED MATERIALS
ELECTRONS
ENERGY-LOSS SPECTROSCOPY
FIELD EMISSION
MICROWAVE RADIATION
NANOSTRUCTURES
NITROGEN
PLASMA
RODS
RUTILE
SCANNING ELECTRON MICROSCOPY
SYNTHESIS
TITANIUM CHLORIDES
TITANIUM OXIDES
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
X-RAY PHOTOELECTRON SPECTROSCOPY