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

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

研究成果: Article

1 引文 (Scopus)

摘要

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.

原文English
頁(從 - 到)148-154
頁數7
期刊Sensors and Actuators, B: Chemical
291
DOIs
出版狀態Published - 2019 七月 15

指紋

Platinum
Chemical sensors
Ammonia
Tungsten
ammonia
tungsten
platinum
Nanoparticles
nanoparticles
sensors
gases
Thin films
Air
Oxide films
Catalyst activity
Gases
Irradiation
Thermodynamics
air
Fabrication

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

引用此文

Liu, I. Ping ; Chang, Ching Hong ; Chou, Tzu Chieh ; Lin, Kun Wei. / Ammonia sensing performance of a platinum nanoparticle-decorated tungsten trioxide gas sensor. 於: Sensors and Actuators, B: Chemical. 2019 ; 卷 291. 頁 148-154.
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Ammonia sensing performance of a platinum nanoparticle-decorated tungsten trioxide gas sensor. / Liu, I. Ping; Chang, Ching Hong; Chou, Tzu Chieh; Lin, Kun Wei.

於: Sensors and Actuators, B: Chemical, 卷 291, 15.07.2019, p. 148-154.

研究成果: Article

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