Publication: Au-doped zinc oxide nanostructure sensors for detection and discrimination of volatile organic compounds
Issued Date
2009-09-01
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ISSN
14328917
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2-s2.0-70149097149
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Mahidol University
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SCOPUS
Bibliographic Citation
Materials Research Innovations. Vol.13, No.3 (2009), 185-188
Suggested Citation
C. Wongchoosuk, S. Choopun, A. Tuantranont, T. Kerdcharoen Au-doped zinc oxide nanostructure sensors for detection and discrimination of volatile organic compounds. Materials Research Innovations. Vol.13, No.3 (2009), 185-188. doi:10.1179/143307509X437572 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/27552
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Title
Au-doped zinc oxide nanostructure sensors for detection and discrimination of volatile organic compounds
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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.