期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 147, 期 2, 页码 467-474出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2010.03.085
关键词
Tin oxide; Flower-like; Nanostructures; Porous; Gas sensor
资金
- Postdoctoral Science Funds [20070410794]
- Young College Teachers' Research Fund Program of Anhui province [2007jql060zd]
- Chinese Academy of Science [0723A11125]
Porous flower-like tin oxide (SnO2) nanostructure is prepared by annealing of the flower-like tin sulfur (SnS2) nanostructures. The morphology and crystal structure of the flower-like SnO2 nanostructures are characterized by field emission scanning electron microscopy, transmission electron microscopy, and X-ray diffraction. The average SnO2 crystallite size is about 6.1 nm. The as-prepared porous flower-like SnO2 nanostructures exhibit a good response and reversibility to some organic gases, such as ethanol and n-butanol. The sensor responses to 100 ppm ethanol and n-butanol are 42.6 and 77.2, respectively, at a working temperature of 240 degrees C. In addition, the sensors exhibit a good response to methanol, 2-propanol. and acetone. The relationship between the gas-sensing properties and the microstructure of the as-prepared flower-like SnO2 nanostructures is also investigated. Crown Copyright (C) 2010 Published by Elsevier B.V. All rights reserved.
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