Enhanced ethanol sensing properties of TiO 2 nanotube sensors

Youngjae Kwon; Hyunsu Kim; Sangmin Lee; In Joo Chin; Tae Yeon Seong; Wan In Lee; Chongmu Lee

doi:10.1016/j.snb.2012.07.062

Enhanced ethanol sensing properties of TiO ₂ nanotube sensors

Youngjae Kwon, Hyunsu Kim, Sangmin Lee, In Joo Chin, Tae Yeon Seong, Wan In Lee, Chongmu Lee

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

136 Scopus citations

Abstract

TiO ₂ nanotube arrays were prepared for use as gas sensors by anodizing Ti thin foils. Transmission electron microscopy revealed a tube diameter and length ranging from 70 to 120 nm and 300 to 400 nm, respectively. The TiO ₂ nanotube array sensors showed responses of 68,000 and 1,380,000% to 300 and 1000 ppm C ₂H ₅OH at 250 °C, respectively. These values are far superior to the responses obtained by most oxide one-dimensional nanostructures reported in the literature. In addition, the ethanol sensing mechanism of the TiO ₂ nanotube array sensors is discussed.

Original language	English
Pages (from-to)	441-446
Number of pages	6
Journal	Sensors and Actuators B: Chemical
Volume	173
DOIs	https://doi.org/10.1016/j.snb.2012.07.062
State	Published - Oct 2012

Bibliographical note

Funding Information:
This study was supported by Key Research Institute Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology ( 2011-0018394 ).

Keywords

Ethanol
Gas sensors
Response
TiO nanotubes

Access to Document

10.1016/j.snb.2012.07.062

Cite this

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title = "Enhanced ethanol sensing properties of TiO 2 nanotube sensors",

abstract = "TiO 2 nanotube arrays were prepared for use as gas sensors by anodizing Ti thin foils. Transmission electron microscopy revealed a tube diameter and length ranging from 70 to 120 nm and 300 to 400 nm, respectively. The TiO 2 nanotube array sensors showed responses of 68,000 and 1,380,000% to 300 and 1000 ppm C 2H 5OH at 250 °C, respectively. These values are far superior to the responses obtained by most oxide one-dimensional nanostructures reported in the literature. In addition, the ethanol sensing mechanism of the TiO 2 nanotube array sensors is discussed.",

keywords = "Ethanol, Gas sensors, Response, TiO nanotubes",

author = "Youngjae Kwon and Hyunsu Kim and Sangmin Lee and Chin, {In Joo} and Seong, {Tae Yeon} and Lee, {Wan In} and Chongmu Lee",

note = "Funding Information: This study was supported by Key Research Institute Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology ( 2011-0018394 ).",

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T1 - Enhanced ethanol sensing properties of TiO 2 nanotube sensors

AU - Kwon, Youngjae

AU - Kim, Hyunsu

AU - Lee, Sangmin

AU - Chin, In Joo

AU - Seong, Tae Yeon

AU - Lee, Wan In

AU - Lee, Chongmu

N1 - Funding Information: This study was supported by Key Research Institute Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology ( 2011-0018394 ).

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AB - TiO 2 nanotube arrays were prepared for use as gas sensors by anodizing Ti thin foils. Transmission electron microscopy revealed a tube diameter and length ranging from 70 to 120 nm and 300 to 400 nm, respectively. The TiO 2 nanotube array sensors showed responses of 68,000 and 1,380,000% to 300 and 1000 ppm C 2H 5OH at 250 °C, respectively. These values are far superior to the responses obtained by most oxide one-dimensional nanostructures reported in the literature. In addition, the ethanol sensing mechanism of the TiO 2 nanotube array sensors is discussed.

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