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Title: Au-doped zinc oxide nanostructure sensors for detection and discrimination of volatile organic compounds
Authors: Teerakiat Kerdcharoen
Keywords: Alcohol;Au-doped zinc oxide;E-nose;Gas sensor;Nanostructure
Issue Date: 2009
Publisher: W. S. Maney & Son Ltd. 2009.
Citation: ฟิสิกส์
Series/Report no.: ;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.
Description: Scopus
ISSN: 14328917
Appears in Collections:Physics: International Proceedings

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