Ammonia gas sensor using thick film of Au-loaded tungsten trioxide

Masami Ando; Takashi Tsuchida; Seiichi Suto; Takahiro Suzuki; Chiaki Nakayama; Norio Miura; Noboru Yamazoe

doi:10.2109/jcersj.104.1112

Ammonia gas sensor using thick film of Au-loaded tungsten trioxide

Masami Ando, Takashi Tsuchida, Seiichi Suto, Takahiro Suzuki, Chiaki Nakayama, Norio Miura, Noboru Yamazoe

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Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

Thick films of Au-loaded WO₃ mixed with glass frit were prepared on an alumina substrate by the printing method, and influences of film thickness, Au-loading and operating temperature on the NH₃ sensing characteristics were investigated. With an increase in film thickness and Au-loading, the maximum sensitivity (K_m) increased, while the temperature for maximum sensitivity (T_m) decreased. An optimum film was revealed to be the 4.0 mass % Au-loaded one of a 250 μm-thickness for the optimum operating temperature of 450°C. The sensor proved excellent NH₃ sensing characteristics in gas sensitivity, response transient, resistance to humidity and long-term stability when subjected to heat cleaning once a day during its operation.

Original language	English
Pages (from-to)	1112-1116
Number of pages	5
Journal	Journal of the Ceramic Society of Japan
Volume	104
Issue number	12
DOIs	https://doi.org/10.2109/jcersj.104.1112
Publication status	Published - 1996

Keywords

Ammonia
Au
Gas sensor
Thick film
Tungsten trioxide

ASJC Scopus subject areas

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

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title = "Ammonia gas sensor using thick film of Au-loaded tungsten trioxide",

abstract = "Thick films of Au-loaded WO3 mixed with glass frit were prepared on an alumina substrate by the printing method, and influences of film thickness, Au-loading and operating temperature on the NH3 sensing characteristics were investigated. With an increase in film thickness and Au-loading, the maximum sensitivity (Km) increased, while the temperature for maximum sensitivity (Tm) decreased. An optimum film was revealed to be the 4.0 mass % Au-loaded one of a 250 μm-thickness for the optimum operating temperature of 450°C. The sensor proved excellent NH3 sensing characteristics in gas sensitivity, response transient, resistance to humidity and long-term stability when subjected to heat cleaning once a day during its operation.",

keywords = "Ammonia, Au, Gas sensor, Thick film, Tungsten trioxide",

author = "Masami Ando and Takashi Tsuchida and Seiichi Suto and Takahiro Suzuki and Chiaki Nakayama and Norio Miura and Noboru Yamazoe",

year = "1996",

doi = "10.2109/jcersj.104.1112",

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publisher = "Ceramic Society of Japan/Nippon Seramikkusu Kyokai",

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T1 - Ammonia gas sensor using thick film of Au-loaded tungsten trioxide

AU - Ando, Masami

AU - Tsuchida, Takashi

AU - Suto, Seiichi

AU - Suzuki, Takahiro

AU - Nakayama, Chiaki

AU - Miura, Norio

AU - Yamazoe, Noboru

PY - 1996

Y1 - 1996

N2 - Thick films of Au-loaded WO3 mixed with glass frit were prepared on an alumina substrate by the printing method, and influences of film thickness, Au-loading and operating temperature on the NH3 sensing characteristics were investigated. With an increase in film thickness and Au-loading, the maximum sensitivity (Km) increased, while the temperature for maximum sensitivity (Tm) decreased. An optimum film was revealed to be the 4.0 mass % Au-loaded one of a 250 μm-thickness for the optimum operating temperature of 450°C. The sensor proved excellent NH3 sensing characteristics in gas sensitivity, response transient, resistance to humidity and long-term stability when subjected to heat cleaning once a day during its operation.

AB - Thick films of Au-loaded WO3 mixed with glass frit were prepared on an alumina substrate by the printing method, and influences of film thickness, Au-loading and operating temperature on the NH3 sensing characteristics were investigated. With an increase in film thickness and Au-loading, the maximum sensitivity (Km) increased, while the temperature for maximum sensitivity (Tm) decreased. An optimum film was revealed to be the 4.0 mass % Au-loaded one of a 250 μm-thickness for the optimum operating temperature of 450°C. The sensor proved excellent NH3 sensing characteristics in gas sensitivity, response transient, resistance to humidity and long-term stability when subjected to heat cleaning once a day during its operation.

KW - Ammonia

KW - Au

KW - Gas sensor

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KW - Tungsten trioxide

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