期刊
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
卷 18, 期 -, 页码 160-164出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.mssp.2013.11.016
关键词
In2O3; Fe2O3; Nanotubes; Gas sensor; Formaldehyde
类别
资金
- Jilin Environment Office [2009-22]
- Jilin Provincial Science and Technology Department [20100344]
- National Innovation Experiment Program for University Students [2010065188]
Pure In2O3 and mixed Fe2O3-In2O3 nanotubes were prepared by simple electrospinning and subsequent calcination. The as-prepared nanotubes were characterized by scanning electron microscopy, powder X-ray diffraction, and energy-dispersive X-ray spectrometry. Gas sensors were fabricated to investigate the gas-sensing properties of In2O3 and Fe2O3-In2O3 nanotubes. Compared to pure In2O3, Fe2O3-In2O3 nanotubes exhibited better gassensing properties for formaldehyde at 250 degrees C. The response of the Fe2O3-In2O3 nanotube gas sensor to 100 ppm formaldehyde was approximately 33, which is approximately double the response of the pure In2O3 nanotube gas sensor. In both cases the response time was similar to 5 s and the recovery time was similar to 25 s. (C) 2013 Elsevier Ltd. All rights reserved.
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