CO sensing performance in micro-arc oxidized TiO2 films for air quality control

Youn Ki Jun, Hyun Su Kim, Jong Heun Lee, Seong Hyeon Hong

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

Porous TiO2 films were prepared by the micro-arc oxidation (MAO) of Ti plates, and their CO sensing properties at low concentrations (5-100 ppm) were investigated as an application for an air quality control sensor. The obtained rutile films exhibited the maximum CO gas response at 350 °C, which is typical for semiconductor-type gas sensors, and the Ra/Rg was ∼1.6 for 10 ppm CO (Ra: resistance in air, Rg: resistance in a sample gas). The magnitude of the gas response increased almost linearly with increasing the CO concentration from 5 to 100 ppm. The CO sensing performance of the TiO2 sensor in the presence of humidity was investigated and compared with that of a SnO2 sensor.

Original languageEnglish
Pages (from-to)69-73
Number of pages5
JournalSensors and Actuators, B: Chemical
Volume120
Issue number1
DOIs
Publication statusPublished - 2006 Dec 14

Fingerprint

air quality
Carbon Monoxide
quality control
Air quality
Quality control
arcs
sensors
Sensors
Gases
gases
Chemical sensors
Atmospheric humidity
rutile
Semiconductor materials
humidity
low concentrations
Oxidation
Air
oxidation
air

Keywords

  • Air quality control
  • CO sensor
  • Micro-arc oxidation
  • TiO

ASJC Scopus subject areas

  • Analytical Chemistry
  • Electrochemistry
  • Electrical and Electronic Engineering

Cite this

CO sensing performance in micro-arc oxidized TiO2 films for air quality control. / Jun, Youn Ki; Kim, Hyun Su; Lee, Jong Heun; Hong, Seong Hyeon.

In: Sensors and Actuators, B: Chemical, Vol. 120, No. 1, 14.12.2006, p. 69-73.

Research output: Contribution to journalArticle

Jun, Youn Ki ; Kim, Hyun Su ; Lee, Jong Heun ; Hong, Seong Hyeon. / CO sensing performance in micro-arc oxidized TiO2 films for air quality control. In: Sensors and Actuators, B: Chemical. 2006 ; Vol. 120, No. 1. pp. 69-73.
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