Development of SnO2-based gas sensor sensitive to dilute ethylene oxide in air

Masahiro Kugishima; Go Sakai; Kengo Shimanoe; Noboru Yamazoe

doi:10.1016/j.snb.2004.11.061

Development of SnO₂-based gas sensor sensitive to dilute ethylene oxide in air

Masahiro Kugishima, Go Sakai, Kengo Shimanoe, Noboru Yamazoe

Functional Materials Science

Research output: Contribution to journal › Article

15 Citations (Scopus)

Abstract

In order to enhance sensitivity to C₂H₄O for the medical safety purpose, foreign additives (e.g. La₂O₃, SrO and CaO) were loaded on SnO₂ powder. Among the additives tested, La₂O₃ proved itself to be a promising promoter for the sensitivity. On the other hand, the response and recovery rates were found to be deteriorated with La₂O₃. The rates were accelerated considerably when the La₂O₃-loaded SnO₂ was further added with Pd or Pt. The device using Pt (0.5 wt.%)-La₂O ₃ (0.5 wt.%)-SnO₂ thus prepared showed sensor response exceeding 10 to 1 ppm C₂H₄O as well as fairly good response rates under dry condition at 300 °C, where response was defined as the resistance ratio (R_air/R_gas).

Original language	English
Pages (from-to)	130-133
Number of pages	4
Journal	Sensors and Actuators, B: Chemical
Volume	108
Issue number	1-2 SPEC. ISS.
DOIs	https://doi.org/10.1016/j.snb.2004.11.061
Publication status	Published - Jul 22 2005

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All Science Journal Classification (ASJC) codes

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

Cite this

Kugishima, M., Sakai, G., Shimanoe, K., & Yamazoe, N. (2005). Development of SnO₂-based gas sensor sensitive to dilute ethylene oxide in air. Sensors and Actuators, B: Chemical, 108(1-2 SPEC. ISS.), 130-133. https://doi.org/10.1016/j.snb.2004.11.061

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abstract = "In order to enhance sensitivity to C2H4O for the medical safety purpose, foreign additives (e.g. La2O3, SrO and CaO) were loaded on SnO2 powder. Among the additives tested, La2O3 proved itself to be a promising promoter for the sensitivity. On the other hand, the response and recovery rates were found to be deteriorated with La2O3. The rates were accelerated considerably when the La2O3-loaded SnO2 was further added with Pd or Pt. The device using Pt (0.5 wt.{\%})-La2O 3 (0.5 wt.{\%})-SnO2 thus prepared showed sensor response exceeding 10 to 1 ppm C2H4O as well as fairly good response rates under dry condition at 300 °C, where response was defined as the resistance ratio (Rair/Rgas).",

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Access to Document

10.1016/j.snb.2004.11.061