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Na+-Doped Zinc Oxide Nanofiber Membrane for High Speed Humidity Sensor


  • H. H. Du—contributing editor

  • This work is supported in part by the National 863 Project (No. 2007AA03Z324), National 973 Project (No. 2007CB936203), and NSFC grants (Nos. 20674027 and 50873045).

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A novel sensitive humidity nanosensor based on Na+-doped ZnO nanofiber membrane has been prepared via electrospinning and calcination. The product was characterized by scanning electron microscopy and X-ray diffraction. During the whole relative humidity (11%–95%) measurement, the response and recovery time is about 3 and 6 s, respectively, with good linearity, and reproducibility. These remarkable and sensitive sensing performances make our product a good candidate in fabricating humidity sensors.

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