Xinglong Gou et al 2009 Nanotechnology 20 495501 doi:10.1088/0957-4484/20/49/495501
Room-temperature solution synthesis of Bi2O3 nanowires for gas sensing application
Xinglong Gou1, Rong Li1, Guoxiu Wang2, Zhixin Chen2 and David Wexler2
Show affiliationsA simple room-temperature solution chemical route for bulk synthesis of high quality α- Bi2O3 nanowires has been demonstrated. The nanowires have a diameter of about 50 nm and a length in the range of several to tens of micrometers. It was found that oleic acid played an important role in directing the growth of α- Bi2O3 nanowires along the ![[10\bar {2}]](http://ej.iop.org/images/0957-4484/20/49/495501/nano330479ieqn1.gif)
direction, and the diameter of the nanowires increased with an increase of the reaction temperature. Furthermore, the Bi2O3 nanowire sensors are highly sensitive to ppm-levels of NO2 in ambient air with fast response, good selectivity and stability, indicating their potential applications for environmental monitoring and pollution control.
- PACS
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81.16.-c Methods of nanofabrication and processing
07.07.Df Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing
81.07.-b Nanoscale materials and structures: fabrication and characterization
- Subjects
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Instrumentation and measurement
- Dates
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Issue 49 (9 December 2009)
Received 6 September 2009, in final form 26 October 2009
Published 6 November 2009
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Room-temperature solution synthesis of Bi2O3 nanowires for gas sensing application
Xinglong Gou et al 2009 Nanotechnology 20 495501
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