Ammonia sensing performance of a platinum nanoparticle-decorated tungsten trioxide gas sensor

I. Ping Liu; Ching Hong Chang; Tzu Chieh Chou; Kun Wei Lin

doi:10.1016/j.snb.2019.04.046

Ammonia sensing performance of a platinum nanoparticle-decorated tungsten trioxide gas sensor

I. Ping Liu
, Ching Hong Chang
, Tzu Chieh Chou
, Kun Wei Lin

Department of Chemical Engineering

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

103 Citations (Scopus)

Abstract

Platinum nanoparticles (Pt NPs) are decorated on a sputtered tungsten tri-oxide (WO₃) thin film to fabricate a high-performance ammonia gas sensor. These Pt NPs are synthesized by drop coating combined with UV irradiation approaches. Compared to a sensor comprising pristine WO₃ thin film, the studied Pt NP/WO₃ device shows a significant improvement in ammonia sensing response. The experimental results indicate that a high sensing response of 26.9 is measured under 1000 ppm NH₃/air gas at 250 °C. Furthermore, even at a low concentration of 1 ppm NH₃/air, a good sensing response of 3.73 is acquired from this device. The superior performance is attributed mainly to the catalytic activity and increased surface-to-volume ratio of Pt NPs. The relevant ammonia sensing properties and thermodynamic characteristics are also investigated. In addition, the Pt NP/WO₃ device demonstrated in this study has advantages including a simple structure, low cost, a relatively easy fabrication process, and a wide concentration detection range.

Original language	English
Pages (from-to)	148-154
Number of pages	7
Journal	Sensors and Actuators, B: Chemical
Volume	291
DOIs	https://doi.org/10.1016/j.snb.2019.04.046
Publication status	Published - 2019 Jul 15

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

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10.1016/j.snb.2019.04.046

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title = "Ammonia sensing performance of a platinum nanoparticle-decorated tungsten trioxide gas sensor",

abstract = "Platinum nanoparticles (Pt NPs) are decorated on a sputtered tungsten tri-oxide (WO3) thin film to fabricate a high-performance ammonia gas sensor. These Pt NPs are synthesized by drop coating combined with UV irradiation approaches. Compared to a sensor comprising pristine WO3 thin film, the studied Pt NP/WO3 device shows a significant improvement in ammonia sensing response. The experimental results indicate that a high sensing response of 26.9 is measured under 1000 ppm NH3/air gas at 250 °C. Furthermore, even at a low concentration of 1 ppm NH3/air, a good sensing response of 3.73 is acquired from this device. The superior performance is attributed mainly to the catalytic activity and increased surface-to-volume ratio of Pt NPs. The relevant ammonia sensing properties and thermodynamic characteristics are also investigated. In addition, the Pt NP/WO3 device demonstrated in this study has advantages including a simple structure, low cost, a relatively easy fabrication process, and a wide concentration detection range.",

author = "Liu, \{I. Ping\} and Chang, \{Ching Hong\} and Chou, \{Tzu Chieh\} and Lin, \{Kun Wei\}",

note = "Funding Information: We would like to acknowledge Miss Hui-Jung Shih for her excellent technical support at Instrument Center, National Cheng-Kung University. This research is partially sponsored by Chaoyang University of Technology (CYUT) and Higher Education Sprout Project, Ministry of Education, Taiwan, Republic of China under the project name: {"}The R\&D and the cultivation of talent for Health-Enhancement Products. Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

year = "2019",

month = jul,

day = "15",

doi = "10.1016/j.snb.2019.04.046",

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T1 - Ammonia sensing performance of a platinum nanoparticle-decorated tungsten trioxide gas sensor

AU - Liu, I. Ping

AU - Chang, Ching Hong

AU - Chou, Tzu Chieh

AU - Lin, Kun Wei

N1 - Funding Information: We would like to acknowledge Miss Hui-Jung Shih for her excellent technical support at Instrument Center, National Cheng-Kung University. This research is partially sponsored by Chaoyang University of Technology (CYUT) and Higher Education Sprout Project, Ministry of Education, Taiwan, Republic of China under the project name: "The R&D and the cultivation of talent for Health-Enhancement Products. Publisher Copyright: © 2019 Elsevier B.V.

PY - 2019/7/15

Y1 - 2019/7/15

N2 - Platinum nanoparticles (Pt NPs) are decorated on a sputtered tungsten tri-oxide (WO3) thin film to fabricate a high-performance ammonia gas sensor. These Pt NPs are synthesized by drop coating combined with UV irradiation approaches. Compared to a sensor comprising pristine WO3 thin film, the studied Pt NP/WO3 device shows a significant improvement in ammonia sensing response. The experimental results indicate that a high sensing response of 26.9 is measured under 1000 ppm NH3/air gas at 250 °C. Furthermore, even at a low concentration of 1 ppm NH3/air, a good sensing response of 3.73 is acquired from this device. The superior performance is attributed mainly to the catalytic activity and increased surface-to-volume ratio of Pt NPs. The relevant ammonia sensing properties and thermodynamic characteristics are also investigated. In addition, the Pt NP/WO3 device demonstrated in this study has advantages including a simple structure, low cost, a relatively easy fabrication process, and a wide concentration detection range.

AB - Platinum nanoparticles (Pt NPs) are decorated on a sputtered tungsten tri-oxide (WO3) thin film to fabricate a high-performance ammonia gas sensor. These Pt NPs are synthesized by drop coating combined with UV irradiation approaches. Compared to a sensor comprising pristine WO3 thin film, the studied Pt NP/WO3 device shows a significant improvement in ammonia sensing response. The experimental results indicate that a high sensing response of 26.9 is measured under 1000 ppm NH3/air gas at 250 °C. Furthermore, even at a low concentration of 1 ppm NH3/air, a good sensing response of 3.73 is acquired from this device. The superior performance is attributed mainly to the catalytic activity and increased surface-to-volume ratio of Pt NPs. The relevant ammonia sensing properties and thermodynamic characteristics are also investigated. In addition, the Pt NP/WO3 device demonstrated in this study has advantages including a simple structure, low cost, a relatively easy fabrication process, and a wide concentration detection range.

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Ammonia sensing performance of a platinum nanoparticle-decorated tungsten trioxide gas sensor

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