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 journalArticle

99 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 languageEnglish
Pages (from-to)441-446
Number of pages6
JournalSensors and Actuators, B: Chemical
Volume173
DOIs
Publication statusPublished - 2012 Oct 1

Fingerprint

Nanotubes
nanotubes
Ethanol
ethyl alcohol
Sensor arrays
sensors
Sensors
anodizing
Anodic oxidation
Chemical sensors
Oxides
Metal foil
foils
Nanostructures
tubes
Transmission electron microscopy
transmission electron microscopy
oxides
gases

Keywords

  • Ethanol
  • Gas sensors
  • Response
  • TiO nanotubes

ASJC Scopus subject areas

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

Cite this

Enhanced ethanol sensing properties of TiO 2 nanotube sensors. / Kwon, Youngjae; Kim, Hyunsu; Lee, Sangmin; Chin, In Joo; Seong, Tae Yeon; Lee, Wan In; Lee, Chongmu.

In: Sensors and Actuators, B: Chemical, Vol. 173, 01.10.2012, p. 441-446.

Research output: Contribution to journalArticle

Kwon, Youngjae ; Kim, Hyunsu ; Lee, Sangmin ; Chin, In Joo ; Seong, Tae Yeon ; Lee, Wan In ; Lee, Chongmu. / Enhanced ethanol sensing properties of TiO 2 nanotube sensors. In: Sensors and Actuators, B: Chemical. 2012 ; Vol. 173. pp. 441-446.
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