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同行評審

40 引文 斯高帕斯(Scopus)


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.

頁(從 - 到)148-154
期刊Sensors and Actuators, B: Chemical
出版狀態Published - 2019 7月 15

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 儀器
  • 凝聚態物理學
  • 表面、塗料和薄膜
  • 金屬和合金
  • 電氣與電子工程
  • 材料化學


深入研究「Ammonia sensing performance of a platinum nanoparticle-decorated tungsten trioxide gas sensor」主題。共同形成了獨特的指紋。