Nano Express

Nanoscale Research Letters

, Volume 4, Issue 6, pp 513-517

Open Access This content is freely available online to anyone, anywhere at any time.

Electrospun ZnO Nanowires as Gas Sensors for Ethanol Detection

  • Wan-Yu WuAffiliated withDepartment of Materials Science and Engineering, National Cheng Kung University
  • , Jyh-Ming TingAffiliated withDepartment of Materials Science and Engineering, National Cheng Kung UniversityInstitute of Nanotechnology and Microsystems Engineering, National Cheng Kung University Email author 
  • , Po-Jung HuangAffiliated withInstitute of Nanotechnology and Microsystems Engineering, National Cheng Kung University

Abstract

ZnO nanowires were produced using an electrospinning method and used in gas sensors for the detection of ethanol at 220 °C. This electrospinning technique allows the direct placement of ZnO nanowires during their synthesis to bridge the sensor electrodes. An excellent sensitivity of nearly 90% was obtained at a low ethanol concentration of 10 ppm, and the rest obtained at higher ethanol concentrations, up to 600 ppm, all equal to or greater than 90%.

Keywords

Zinc oxide Electrospinning Ethanol sensor Sensitivity