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Fabrication and Performance of Micro-sensors for Methane Detection Based on In-Pd-Co-SnO2 Composite Nanofibers |
| QIAO Ji-Ping1, 2, ZHU Zi-Peng1, YAN Xiao-Yan3, QIN Jian-Min2** |
1College of Physics & Optoelectronics, Taiyuan University of Technology, Taiyuan 030024
2 Institute of Measuring and Controlling Technology, Taiyuan University of Technology, Taiyuan 030024
3School of Electronics and Computer Science & Technology, North University of China, Taiyuan 030051 |
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Abstract In-Pd-Co-SnO2 composite nanofibers have been synthesized by an electrospinning method and characterized by x−ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Micro-sensors with a tiny area of 1×1 mm2 are fabricated by spinning the nanofibers on sensor substrates. Excellent CH4 sensing properties are found based on the micro−sensors. The sensitivity is up to 13 when the sensors are exposed to 10 ppm CH4 at 140°C, and the response and recovery times are about 8 and 14 s, respectively. High selectivity, good stability, and low power-consumption are also observed in the investigation.
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07.07.Df
82.47.Rs
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Received: 21 September 2011
Published: 11 March 2012
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| PACS: |
07.07.Df
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(Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing)
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82.47.Rs
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(Electrochemical sensors)
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