Pt catalytic effects on a resistive oxygen sensor using Ce 0.9Zr0.1O2 thick film in rich conditions

Noriya Izu, Woosuck Shin, Ichiro Matsubara, Toshio Itoh, Maiko Nishibori, Norimitsu Murayama

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

In this study, we investigated the Pt catalyst effects on two structures through loading a Pt catalyst onto a resistive oxygen sensor using Ce 0.9Zr0.1O2 thick film. We used (1) Ce 0.9Zr0.1O2 thick film with a Pt/alumina layer, and (2) Pt/Ce0.9Zr0.1O2 thick film, in which Pt catalysts were prepared by heating platinum chloride. In the case of sensor structure (1), it became clear that the Pt/alumina layer with a Pt concentration of 40 wt% was the most effective in the Pt/alumina layers fabricated in this study, where R(λ = 0.6)/R(λ = 1.4) was 0.0099, and R(λ = 0.6)/R(λ = 1.4) of the 40 wt% Pt/alumina layer decreased with decreasing temperature. In the case of sensor structure (2), the minimum values of R(λ = 0.6)/R(λ = 1.4) at 600 and 700°C were the same at 0.035. The ultrasonic treatment in the Pt loading process improved R(λ = 0.6)/R(λ = 1.4) to 0.02. The Pt particle size in this study was in a range from 20 to 100 nm because of the high temperature annealing in the Pt loading process.

Original languageEnglish
Pages (from-to)175-179
Number of pages5
JournalJournal of the Ceramic Society of Japan
Volume118
Issue number1375
DOIs
Publication statusPublished - Jan 1 2010
Externally publishedYes

Fingerprint

Oxygen sensors
Aluminum Oxide
Thick films
thick films
Alumina
aluminum oxides
sensors
oxygen
catalysts
Catalysts
ultrasonic processing
Sensors
Platinum
platinum
Ultrasonics
Particle size
chlorides
Annealing
Heating
Temperature

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

Cite this

Pt catalytic effects on a resistive oxygen sensor using Ce 0.9Zr0.1O2 thick film in rich conditions. / Izu, Noriya; Shin, Woosuck; Matsubara, Ichiro; Itoh, Toshio; Nishibori, Maiko; Murayama, Norimitsu.

In: Journal of the Ceramic Society of Japan, Vol. 118, No. 1375, 01.01.2010, p. 175-179.

Research output: Contribution to journalArticle

Izu, Noriya ; Shin, Woosuck ; Matsubara, Ichiro ; Itoh, Toshio ; Nishibori, Maiko ; Murayama, Norimitsu. / Pt catalytic effects on a resistive oxygen sensor using Ce 0.9Zr0.1O2 thick film in rich conditions. In: Journal of the Ceramic Society of Japan. 2010 ; Vol. 118, No. 1375. pp. 175-179.
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