期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 147, 期 2, 页码 531-538出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2010.04.003
关键词
Electrospinning; Indium oxide; Gas sensor; Nanowires; Nanotubes
资金
- High-Tech Research and Development Program of China (863) [2007AA03Z314]
- National Natural Science Foundation of China [50772042, 10704073]
Porous In2O3 nanotubes (NTs) and nanowires (NWs) in cubic phase were fabricated via electrospinning and characterized by scan electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and N-2 adsorption experiments. The NTs had an average outer diameter of similar to 80 nm and wall thickness of similar to 15 nm, while the NWs had a diameter of similar to 120 nm. The gas sensing properties of the prepared NTs/NWs were measured for H2S. The results demonstrate that the sensors had optimum and high responses to H2S at room temperature in dilute 1-100 ppm concentration range. They also display excellent selectivity, anti-interference and stability. The gas sensing mechanism at room temperature was attributed to the sulfuration of In2O3. The present electrospun In2O3 NTs/NWs have demonstrated the potential applied for H2S gas detection under room temperature. (C) 2010 Elsevier B.V. All rights reserved.
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