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Proceedings Paper

Comparison of the phase transformation rate for TiO[sub]2[/sub] thin film and TiO[sub]2[/sub] nanorods
Author(s): Yi Chen; K. S. Kang; J. Nayak; J. Kim
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Paper Abstract

Relative phase transformation rates are compared with TiO2 sol-gel thin film and TiO2 nanorods. TiO2 thin film was prepared with sol-gel process using titaanium isoproxide (TIP) as a precusor, ethanol as a solvent and HCl as a catalyst. The TiO2 nanorods were synthesized with low temperature proccess (100 °C) using TIP, oleic acid, and aqueous trimethylamine. The prepared thin film and nanorods were annealed at 850 °C for 3 h. X-ray diffraction patterns reveal that the TiO2 thin film and TiO2 nanorods have amorphase phase and anatase phase, respectively before annealing process. Approximately 60 and 3 % of TiO2 thin film and TiO2 nanorods transformed from anatase phase to rutile phase after annealing at 850 °C for 3 h. Relatively small amount of TiO2 nanorods transformed to rutile phase compared with TiO2 thin film. This small amount of phase transformation may be due to the small diameter of the TiO2 nanorods, which have thermodynamecally favorable anatase phase.

Paper Details

Date Published: 30 March 2010
PDF: 4 pages
Proc. SPIE 7646, Nanosensors, Biosensors, and Info-Tech Sensors and Systems 2010, 764608 (30 March 2010); doi: 10.1117/12.847485
Show Author Affiliations
Yi Chen, Inha Univ. (Korea, Republic of)
K. S. Kang, Inha Univ. (Korea, Republic of)
J. Nayak, Inha Univ. (Korea, Republic of)
J. Kim, Inha Univ. (Korea, Republic of)

Published in SPIE Proceedings Vol. 7646:
Nanosensors, Biosensors, and Info-Tech Sensors and Systems 2010
Vijay K. Varadan, Editor(s)

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