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

138 Citations (Scopus)

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
Publication status	Published - 2012 Oct

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

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Instrumentation
Condensed Matter Physics
Surfaces, Coatings and Films
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

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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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 ).

PY - 2012/10

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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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