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|Title:||Au-doped zinc oxide nanostructure sensors for detection and discrimination of volatile organic compounds|
Chiang Mai University
National Electronic and Computer Technology Center
|Keywords:||Engineering;Materials Science;Physics and Astronomy|
|Citation:||Materials Research Innovations. Vol.13, No.3 (2009), 185-188|
|Abstract:||Pure and 10% w/w Au-doped zinc oxide (ZnO) nanostructure sensors were produced and used as sensing devices in a portable electronic nose (E-nose). The nanosensors were prepared using thermal oxidation technique with sintering temperature at 700°C under oxygen atmosphere at a flow rate of 500 mL min-1. The sensors were demonstrated to be sensitive to various volatile organic compounds (VOCs), especially ethanol vapour. The E-nose even with only two sensors was efficient to discriminate a number of selected VOCs. The Au-doped sensor shows a significant improvement of sensitivity. The portable E-nose can detect the difference between alcohol beverages and alcohol solutions and can distinguish the difference of white and red wines having the same percentage of alcohol. © W. S. Maney & Son Ltd. 2009.|
|Appears in Collections:||Scopus 2006-2010|
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