Integration of ceramic catalyst on micro-thermoelectric gas sensor

Woosuck Shin, Maiko Nishibori, Kazuki Tajima, Lionel F. Houlet, Yeongsoo Choi, Noriya Izu, Norimitsu Murayama, Ichiro Matsubara

研究成果: ジャーナルへの寄稿学術誌査読

24 被引用数 (Scopus)


An integration technique of dispensing ceramic paste containing the particles of Pt loaded on alumina (Pt/alumina) on thin membrane of micro-thermoelectric hydrogen sensor (μ-THS) has been developed. By changing the concentration of the catalyst particles in the paste, the viscosity of the paste was controlled to prepare the thick film catalyst of different thicknesses. The thickness of the catalyst was closely related to both the gas sensing performance and its temperature dependency of the μ-THS device. The sensor device with the moderate concentration of the Pt/alumina catalyst particle in the paste, 3.8% (v/v), showed the voltage signal of ca. 10 mV for the gas mixture of hydrogen/air, 1% (v/v) H2 in air at catalyst temperature of 100 °C. The performances of the μ-THS with ceramic thick film catalyst and Pt thin film catalyst have been compared, and the influences of CO gas on their sensing performance have been investigated using in situ FT-IR test method. The better gas oxidation performance of the ceramic thick film than that of Pt thin film could remove out the adsorbed CO on the catalyst surface.

ジャーナルSensors and Actuators, B: Chemical
出版ステータス出版済み - 10月 25 2006

!!!All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 器械工学
  • 凝縮系物理学
  • 表面、皮膜および薄膜
  • 金属および合金
  • 電子工学および電気工学
  • 材料化学


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